CN114453445A - Preparation method of corrosion-resistant elastic card clothing steel wire and corrosion-resistant elastic card clothing steel wire - Google Patents
Preparation method of corrosion-resistant elastic card clothing steel wire and corrosion-resistant elastic card clothing steel wire Download PDFInfo
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- CN114453445A CN114453445A CN202111567727.4A CN202111567727A CN114453445A CN 114453445 A CN114453445 A CN 114453445A CN 202111567727 A CN202111567727 A CN 202111567727A CN 114453445 A CN114453445 A CN 114453445A
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- 239000010959 steel Substances 0.000 title claims abstract description 146
- 238000005260 corrosion Methods 0.000 title claims abstract description 76
- 230000007797 corrosion Effects 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000010791 quenching Methods 0.000 claims abstract description 19
- 230000000171 quenching effect Effects 0.000 claims abstract description 19
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 48
- 239000000126 substance Substances 0.000 claims description 18
- 229910001562 pearlite Inorganic materials 0.000 claims description 15
- 241000446313 Lamella Species 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 150000001247 metal acetylides Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 18
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
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- 239000004753 textile Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 23
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- 238000003723 Smelting Methods 0.000 description 11
- 238000005266 casting Methods 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 9
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- 229910000734 martensite Inorganic materials 0.000 description 2
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- 238000011084 recovery Methods 0.000 description 2
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- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
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Abstract
The invention especially relates to a preparation method of a corrosion-resistant elastic card clothing steel wire and the corrosion-resistant elastic card clothing steel wire, belonging to the technical field of textile, comprising the following steps: obtaining card clothing steel wire rods; and drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. According to the preparation method of the corrosion-resistant elastic card clothing steel wire, the steel wire which has both obdurability and corrosion resistance can be prepared by drawing, austenitizing and lead bath quenching, and processes which can cause environmental pollution such as acid washing, phosphorization and galvanizing are not needed, so that the steel wire which has both obdurability and corrosion resistance and environmental protection performance is obtained.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a preparation method of a corrosion-resistant elastic card clothing steel wire and the corrosion-resistant elastic card clothing steel wire.
Background
Card clothing is a core material for manufacturing fibers such as carding cotton, wool, hemp, spun silk, chemical fiber and the like in the textile industry, and the card clothing is used as a surface coating of a carding machine and is divided into metal card clothing and elastic card clothing, wherein the metal card clothing is mainly used for roving, opening and impurity removal; the elastic card clothing is mainly used for fine carding. Along with the requirements of high speed, high yield and fiber color diversity of the carding machine, higher requirements are put forward on the obdurability and corrosion resistance of the card clothing steel wire, and although the corrosion resistance of the stainless steel card clothing steel wire is better, the strength is lower, and the carding effect is poorer; the problems of severe environmental pollution, poor flatness, poor wear resistance, high cost and the like of acid washing, phosphating, galvanizing, waste liquid and the like in the manufacturing process of the galvanized card clothing steel wire exist, and the environment protection, the thin wire diameter, the high strength and toughness and the high corrosion resistance are still the trend of the future development of the elastic card clothing steel wire.
Disclosure of Invention
The application aims to provide a preparation method of a corrosion-resistant elastic card clothing steel wire and the corrosion-resistant elastic card clothing steel wire, and solve the technical problem that the existing card clothing steel wire cannot give consideration to toughness, corrosion resistance and environmental protection performance.
In order to solve the above technical problems, an embodiment of the present invention provides a method for preparing any one of the above corrosion-resistant elastic card clothing wires, including the steps of:
obtaining card clothing steel wire rods;
and drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire.
Optionally, the austenitizing temperature is 810-.
Optionally, the patenting includes primary patenting and secondary patenting, the primary patenting is performed when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is performed when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm.
Optionally, the primary and secondary patenting temperatures are both 550 ℃, the operating speeds of the primary and secondary patenting are both 30-40m/mmin, and the operating times of the primary and secondary patenting are both 15-20 s.
Optionally, 11-13 passes are adopted for the drawing, the total reduction rate of the drawing is 95.2-97.3%, and the drawing speed is 500-600 m/min.
Based on the same inventive concept, the embodiment of the invention also provides a corrosion-resistant elastic card clothing steel wire which is prepared by any one of the preparation methods of the corrosion-resistant elastic card clothing steel wire, and the steel wire comprises the following chemical components in percentage by mass:
c: 0.63-0.70%, Si: 0.10-0.30%, Mn: 0.60-0.90%, P: less than or equal to 0.017 percent, S: less than or equal to 0.017 percent, Ni: 1-3%, and the balance of Fe and inevitable impurities.
Optionally, the steel wire comprises the following chemical components in percentage by mass: c: 0.65-0.68%, Si: 0.15-0.25%, Ni: 1.4-2.5%.
Optionally, the metallographic structure of the steel wire comprises, by mass: 95-98% of sorbite and 2-5% of pearlite.
Optionally, the lamella spacing of the sorbite is 65-80 nm.
Optionally, the size of the carbide in the sorbite is less than or equal to 0.3 μm.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the preparation method of the corrosion-resistant elastic card clothing steel wire provided by the embodiment of the invention comprises the following steps: obtaining card clothing steel wire rods; and drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. According to the preparation method of the corrosion-resistant elastic card clothing steel wire, the steel wire which has both obdurability and corrosion resistance can be prepared by drawing, austenitizing and lead bath quenching, and processes which can cause environmental pollution such as acid washing, phosphorization and galvanizing are not needed, so that the steel wire which has both obdurability and corrosion resistance and environmental protection performance is obtained.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow chart of a method for making a corrosion resistant resilient card wire in accordance with an embodiment of the present invention;
FIG. 2 is a graph of the isothermal tissue transition (TTT) of the steel wire at 800 ℃ and 900 ℃;
FIG. 3 is a metallographic structure chart of a steel wire provided in comparative example 3;
FIG. 4 is a sorbite structure of a steel wire provided in example 5 of the present invention;
FIG. 5 is a carbide structure in sorbite of the steel wire provided in comparative example 1.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. For example, the room temperature may be a temperature within a range of 10 to 35 ℃.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
according to an exemplary embodiment of the present invention, there is provided a method for manufacturing a corrosion-resistant elastic card wire, including the steps of:
and S1, obtaining the card clothing steel wire rod.
Specifically, the method comprises the following steps: the card clothing steel wire rod satisfying the components can be obtained by selecting the existing card clothing steel wire rod, or smelting molten steel according to the corresponding end point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
S2, drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire.
In the preparation method of the corrosion-resistant elastic card clothing steel wire, the steel wire with both obdurability and corrosion resistance can be prepared by drawing, austenitizing and lead bath quenching, and processes which can cause environmental pollution such as acid washing, phosphorization and galvanization are not needed, so that the steel wire with both obdurability and corrosion resistance and environmental protection performance is obtained.
As an alternative embodiment, the austenitizing temperature is 810-.
The mechanism for controlling the above temperature range is: the high mass percentages of Ni, Cr and Mo in the steel wire directly influence the transformation characteristics of the steel wire heat treatment, so that the transformation C curve moves downwards, the nose point temperature is reduced, and the incubation period is increased, thereby changing the heat treatment structure condition, and the optimal heat treatment structure can be obtained only by controlling the austenitizing temperature to be 810-900 ℃. When the austenitizing temperature is lower than 810 ℃, the problems of insufficient re-dissolution of alloy elements and insufficient recovery in the drawing deformation process exist; when the austenitizing temperature is higher than 900 ℃, the steel structure transformation incubation period is greatly increased, and the complete transformation of the sorbite structure cannot be completed.
As an alternative embodiment, the patenting comprises a primary patenting performed when the card wire is drawn to a diameter of 3.0 to 3.2mm and a secondary patenting performed when the card wire is drawn to a diameter of 0.9 to 1.2 mm.
The reason for carrying out the patenting twice is as follows: carrying out primary lead bath treatment when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, realizing lead bath treatment structure recovery of drawn fiber structure, and facilitating further deep drawing; further drawing to a middle filament with phi of 0.9-1.2 mm in diameter at phi of 3.0-3.2 mm, and then adopting secondary lead bath heat treatment to recover the drawn fiber structure.
Further, the running speeds of the primary lead bath quenching and the secondary lead bath quenching are both 30-40m/min, and the running times of the primary lead bath quenching and the secondary lead bath quenching are both 15-20 s.
The mechanism for controlling the above numerical range is: the steel wire has high mass percentages of Ni, Cr and Mo, which directly influences the transformation characteristics of steel wire heat treatment, and makes the transformation C curve move downwards, the nose point temperature decrease and the incubation period increase, thereby changing the heat treatment structure condition, and the optimal heat treatment structure can be obtained by controlling the austenitizing temperature and simultaneously controlling the running speed and running time of lead bath quenching to be matched. When the lead bath quenching time is less than 15s, the transformation of sorbite structure is insufficient, and martensite appears in steel, so that the drawing wire breakage is serious; when the lead bath quenching time is more than 20s, carbides in sorbite can be coarsened, and the drawing performance of the steel wire is seriously influenced.
As an alternative embodiment, 11-13 passes are adopted for the drawing, the total reduction rate of the drawing is 95.2-97.3%, and the drawing speed is 500-600 m/min.
The mechanism for controlling the above numerical range is: designing 11-13 drawing passes and 500-600m/min according to the drawing performance of the material, wherein the drawing passes are too few, higher requirements are put on the drawing performance of the material, and the wire breakage rate can be greatly improved; similarly, when the drawing speed is more than 500-600m/min, the drawing broken wire rate can be greatly improved. On the contrary, when the drawing passes are too many and the drawing speed is less than 500-600m/min, the production efficiency is affected.
According to another exemplary embodiment of the present invention, there is provided a corrosion-resistant elastic card clothing wire produced by any one of the above-mentioned production methods, the wire having a chemical composition comprising, by mass:
c: 0.63-0.70%, Si: 0.10-0.30%, Mn: 0.60-0.90%, P: less than or equal to 0.017 percent, S: less than or equal to 0.017 percent, Ni: 1-3%, and the balance of Fe and inevitable impurities.
The corrosion-resistant elastic card clothing steel wire effectively adjusts the performance of the steel wire by adjusting the mass percentage of the chemical components, and particularly, on one hand, the corrosion resistance of the steel wire is improved by increasing the mass percentage of a corrosion-resistant element Ni, and on the other hand, the transformation characteristic of the steel wire heat treatment is changed by increasing the mass percentage of C and increasing the mass percentage of Ni, so that the transformation C curve moves downwards, the nose point temperature is reduced, and the incubation period is increased, thereby changing the heat treatment structure condition, effectively transforming the structure into sorbite and pearlite, improving the drawing performance of the steel wire through the sorbite, improving the strength of the steel wire through the pearlite, further ensuring that the steel wire has both obdurability and corrosion resistance, and being free from the steps of acid pickling, phosphating, galvanizing and the like, thereby ensuring that the steel wire has environmental protection performance.
Preferably, the chemical composition of the steel wire comprises, by mass percent: c: 0.65-0.68%, Si: 0.15-0.25%, Ni: 1.4-2.5 percent. The performance of the steel wire is further improved by further optimizing the mass percentage of the C and each corrosion-resistant metal.
As an alternative embodiment, the metallographic structure of the steel wire comprises, in mass percent: 95-98% of sorbite and 2-5% of pearlite.
The mechanism for controlling the metallographic structure and the mass percentage is as follows: when the mass percentage of the sorbite is 95-98%, the steel wire has good drawing performance, and meanwhile, the lamella spacing of the sorbite is a key index for determining the strength and the plasticity of the steel wire after drawing.
As an alternative embodiment, the lamella spacing of the sorbite is 65-80 nm.
The mechanism for controlling the above range is: the lamella spacing of the sorbite is a key index for determining the strength and the plasticity of the steel wire after drawing, when the lamella spacing is more than 80nm, the drawing strength of the steel wire after 12-13 times of drawing is lower than 200MPa, and the straight drawing process cannot be realized.
As an alternative embodiment, the size of the carbides in the sorbite is less than or equal to 0.3 μm.
The mechanism for controlling the above range is: when the carbide size is more than 0.3. mu.m, the drawing of the steel wire is not facilitated, and particularly, the drawing of a filament of 0.25mm or less cannot be achieved.
The present application will be described in detail below with reference to examples, comparative examples, and experimental data.
Example 1
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 1.
Table 1 example 1 parameters in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 98% sorbite and 2% pearlite, the lamella spacing of the sorbite is 65nm, and the size of the carbide in the sorbite is 0.15 μm.
Example 2
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 2.
Table 2 example 2 parameters in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 95% sorbite and 5% pearlite, the lamella spacing of the sorbite is 70nm, and the size of the carbide in the sorbite is 0.25 μm.
Example 3
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 3.
Table 3 parameters of example 3 in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 96.8% sorbite and 3.2% pearlite, the lamella spacing of the sorbite is 68nm, and the size of the carbide in the sorbite is 0.20 μm.
Example 4
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 4.
Table 4 example 4 parameters in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 98% sorbite and 2% pearlite, the lamella spacing of the sorbite is 75nm, and the size of the carbide in the sorbite is 0.22 μm.
Example 5
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 5.
Table 5 example 5 parameters in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 97.5% sorbite and 2.5% pearlite, the lamella spacing of the sorbite is 74nm, and the size of the carbide in the sorbite is 0.18 μm.
Example 6
The embodiment provides a preparation method of a corrosion-resistant elastic card clothing steel wire, which comprises the following steps:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
And S2, drawing, austenitizing and patenting the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire, wherein the patenting comprises primary patenting and secondary patenting, the primary patenting is carried out when the card clothing steel wire rod is drawn to phi 3.0-phi 3.2mm, and the secondary patenting is carried out when the card clothing steel wire rod is drawn to phi 0.9-phi 1.2 mm. The parameters are shown in Table 6.
Table 6 example 6 parameters in step S2
This example provides a corrosion resistant elastic card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 95% sorbite and 5% pearlite, the lamella spacing of the sorbite is 80nm, and the size of the carbide in the sorbite is 0.19 μm.
Comparative example 1
This comparative example provides a method of preparing a card wire comprising the steps of:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
S2, drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. The parameters are shown in Table 7.
TABLE 7 parameters of comparative example 1, step S2
The present comparative example also provides a clothing wire produced by the above-described production method, the wire having a metallographic structure of 95% sorbite and 5% pearlite, the distance between layers of sorbite being 11Onm, and the size of carbide in sorbite being 0.50 μm.
Comparative example 2
This comparative example provides a method of preparing a card wire comprising the steps of:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
S2, drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. The parameters are shown in Table 8.
TABLE 8 parameters of comparative example 2, step S2
The comparative example also provides a card clothing wire prepared by the above preparation method, the metallographic structure of the wire being 45.5% sorbite and 54.5% pearlite.
Comparative example 3
This comparative example provides a method of preparing a card wire comprising the steps of:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
S2, drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. The parameters are shown in Table 9.
TABLE 9 parameters of comparative example 3, step S2
The comparative example also provides a card clothing steel wire obtained by the preparation method, and the metallographic structure of the steel wire is 15% of sorbite and 85% of pearlite.
Comparative example 4
This comparative example provides a method of preparing a card wire comprising the steps of:
and S1, smelting molten steel according to the chemical components as end-point components, and obtaining the card clothing steel wire rod through casting, rolling and other processes.
S2, drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire. The parameters are shown in Table 10.
TABLE 10 parameters of comparative example 4, step S2
The comparative example also provides a card clothing wire prepared by the above preparation method, the metallographic structure of the wire is 92% of sorbite and 8% of pearlite, the lamella spacing of the sorbite is 85nm, and the size of carbide in the sorbite is 0.45 μm.
Examples of the experiments
The achievable filament diameters of the card wire of examples 1 to 6 and comparative examples 1 to 4 were tested and counted, respectively, and are shown in table 21.
TABLE 21
As can be seen from table 1, the corrosion-resistant elastic card clothing wires of examples 1 to 6 have a wire diameter of a filament significantly smaller than that of comparative examples 1 to 4, are corrosion-resistant, do not require pickling, phosphating or galvanizing, and do not cause environmental pollution such as waste liquid, and therefore, the corrosion-resistant elastic card clothing wires provided by the embodiments of the present invention can effectively solve the technical problem that the conventional card clothing wires cannot satisfy the toughness, corrosion resistance and environmental protection.
Detailed description of the drawings 2-5:
as shown in FIG. 2, the temperature transformation curves (TTT) of the steel wire at 800 ℃ and 900 ℃ show that the transformation nose tip temperature is 850 ℃, the time required for completing transformation at 850 ℃ is 13.5s, and the time required for completing transformation at 950 ℃ is 32 s.
As shown in FIG. 3, which is a metallographic structure of the steel wire according to comparative example 3, it is understood that the steel wire had a large-area martensitic structure in the core thereof due to insufficient transformation time in the lead bath.
As shown in FIG. 4, the sorbite structure of the steel wire provided in example 5 of the present invention showed that 97.5% or more of the sorbite fine lamellar structure was formed, and the lamellar spacing was 74 nm.
As shown in fig. 5, the carbide structure in the sorbite of the steel wire provided in comparative example 1 was found to contain a large number of carbides having a large size, particularly at the grain boundary position.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A preparation method of a corrosion-resistant elastic card clothing steel wire is characterized by comprising the following steps:
obtaining card clothing steel wire rods;
and drawing, austenitizing and lead bath quenching the card clothing steel wire rod to obtain the corrosion-resistant elastic card clothing steel wire.
2. The method of claim 1 wherein the austenitizing temperature is 810-900 ℃.
3. The method of making a corrosion resistant resilient card wire of claim 1 wherein said patenting comprises a primary patenting performed when said card wire rod is drawn to a diameter of 3.0-3.2 mm and a secondary patenting performed when said card wire rod is drawn to a diameter of 0.9-1.2 mm.
4. A method for manufacturing a corrosion resistant elastic card clothing steel wire as claimed in claim 3, wherein the temperature of each of the primary and secondary patenting is 550 ℃, the running speed of each of the primary and secondary patenting is 30-40m/min, and the running time of each of the primary and secondary patenting is 15-20 s.
5. The method for preparing a corrosion-resistant elastic card clothing wire as claimed in claim 1, wherein the drawing is performed in 11-13 passes, the total reduction rate of the drawing is 95.2-97.3%, and the drawing speed is 500-600 m/min.
6. A corrosion resistant elastic card clothing wire, characterized in that it is prepared by the method of preparing a corrosion resistant elastic card clothing wire according to any one of claims 1 to 5, said wire having a chemical composition comprising, in mass%:
c: 0.63-0.70%, Si: 0.10-0.30%, Mn: 0.60-0.90%, P: less than or equal to 0.017 percent, S: less than or equal to 0.017 percent, Ni: 1-3%, and the balance of Fe and inevitable impurities.
7. A corrosion resistant resilient card wire according to claim 6, characterized in that the chemical composition of the wire comprises, in mass percent:
C：0.65-0.68％，Si：0.15-0.25％，Ni：1.4-2.5％。
8. a corrosion resistant elastic card wire according to claim 6 or 7, characterized in that the metallographic structure of said wire comprises, in mass%:
95-98% of sorbite and 2-5% of pearlite.
9. A corrosion resistant elastic card wire according to claim 8, characterized in that said sorbite has a lamella spacing of 65-80 nm.
10. A corrosion-resistant elastic card wire according to claim 8, characterized in that the size of carbides in said sorbite is 0.3 μm or less.
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