CN104668686B - A kind of employing low temperature brazing weldable steel part and inserted tool method - Google Patents
A kind of employing low temperature brazing weldable steel part and inserted tool method Download PDFInfo
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- CN104668686B CN104668686B CN201510105914.9A CN201510105914A CN104668686B CN 104668686 B CN104668686 B CN 104668686B CN 201510105914 A CN201510105914 A CN 201510105914A CN 104668686 B CN104668686 B CN 104668686B
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- steel part
- carbide chip
- solder
- brazing
- copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/20—Tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of employing low temperature brazing weldable steel part and inserted tool method, adopt the female part of low temperature brazing welding and carbide chip, brazing flux is applied to female part, solder, copper sheet, the surface of carbide chip, and solder is added between female part and copper sheet or between carbide chip and copper sheet, copper sheet is welded on female part and Wimet, then immediately the object welded is placed in the holding furnace of 280 ~ 300 DEG C and it is incubated 6 ~ 7h, after temperature drops to 100 ~ 150 DEG C of insulation 10��12h, furnace cooling is to normal temperature, slowly heat bottom parent, when solder starts to melt also energy unrestricted flow, stop heating, when solder flowing is not smooth, continue heating, several times so repeatedly, carbide chip is welded on parent, last in the holding furnace of 100 ~ 150 DEG C furnace cooling to normal temperature. the present invention has the high advantage of production efficiency, avoids carbide chip and the problem such as crackle, fracture occurs.
Description
Technical field
The present invention relates to tool sharpening technology, particularly a kind of employing low temperature brazing weldable steel part and inserted tool method.
Background technology
Low temperature brazing technology belongs to soldering, often using 450 DEG C of line of delimitation as soft or hard soldering. Soldering adopts the solder lower than mother metal melting temperature, service temperature lower than mother metal solid phase higher than a kind of welding technique of solder liquidus line. During soldering, brazing filler metal melts is liquid, and mother metal remains solid-state, liquid solder in the gap of mother metal or on the surface moistening, capillary flow, fill, sprawl and mother metal interacts (dissolve, diffusion or produce intermetallic compound), cooled and solidified forms firmly joint, thus is linked together by mother metal.
At present, conventional 700 DEG C��800 DEG C high temperature brazings of the soldering of Cutlery Steel part and Wimet complete, but crackle easily occur because both thermal expansivity at normal temperatures are different after weldering, even rupture. Occurring on Wimet that crackle is that thermal stresses is excessive and causes, in rapid heating or process of cooling, due to the internal and external temperature difference of Wimet own so that heat-processed inside produces tensile stress, process of cooling outside produces tensile stress. On the other hand, after welding completes, solder solidifies, cutter begins to cool down, owing to the thermal expansivity of steel part is 2��3 times of Wimet, steel part from Wimet produces different contractions, the result shunk gradually, just producing tensile stress and stress on Wimet, exceed the tensile strength position of Wimet in tensile stress, carbide chip will produce crackle. This gives to produce and process and brings many troubles, in order to improve the success ratio of soldering, adopts the method for low temperature brazing, solves this difficult problem well.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that the impaired little employing low temperature brazing weldable steel part of a kind of production efficiency height, carbide chip and inserted tool method.
The object of the present invention is achieved through the following technical solutions: a kind of employing low temperature brazing weldable steel part and inserted tool method, and it comprises the following steps:
S1, pre-treatment: carbide chip is carried out sandblasting, then carry out cleaning and degreasing process respectively by parent steel part, carbide chip and solder;
S2, welding copper: be heated to be cooked into pasty state by brazing flux, brazing flux is applied to the surface of parent steel part, solder, copper sheet and carbide chip again, and solder is added between parent steel part and copper sheet, at the copper of welding surface-welding one layer of 0.25��0.5mm thickness of parent steel part, equally, the copper of one layer of 0.25��0.5mm thickness is also welded on the welding surface of carbide chip;
S3, welded after, immediately parent steel part and carbide chip are placed in the holding furnace of 280 DEG C ~ 300 DEG C insulation 6 ~ 7 hours after, slow cooling, when temperature drops to 100 DEG C ~ 150 DEG C, then closes holding furnace after being incubated 10��12h, and furnace cooling is to normal temperature;
The surface of S4, milling brazing: the copper that the parent steel part and carbide chip that are welded with copper are fallen in milling machine milling respectively 0.08��0.10mm, the surface planarity after milling ensures between 0��0.03mm, removes welding slag;
S5, heating and soaking: the face of weld of carbide chip is placed on the face of weld of parent steel part, slowly bottom heating parent steel part, soaking, when solder starts to melt also energy unrestricted flow, stops heating, when solder flowing is not smooth, continue heating, 2��6 times so repeatedly, in this process, changing of the relative positions carbide chip, carbide chip is welded on parent steel part the most at last;
S6, slow cooling: in the holding furnace of 100 DEG C ~ 150 DEG C, furnace cooling is to normal temperature;
S7, scarfing cinder: after Wetted constructures, remove welding slag, checks without after empty weldering, obtains product.
Further, in step s3, slow cooling is specially cooling per hour and is no more than 30 DEG C.
Further, the method for a kind of low temperature brazing cutter according to claim 1, it is characterised in that: in step s 5, adopt high-frequency induction heating, and temperature is controlled between 260 DEG C ~ 300 DEG C.
The present invention has the following advantages:
1, by adopting low temperature brazing welding carbide chip, make the internal organizational structure change of steel part little, when welding with Wimet, its contingent expansion, Strength Changes and distortion are all smaller, avoid carbide chip and the problem such as crackle, fracture occur.
2, low temperature brazing reduces process period greatly than high temperature brazing, it is to increase production efficiency.
3, the brazing filler metal melts temperature used is low, and during welding, solder flux is not easily burnt, and the scope of selectable flux compounds is relatively wider, and low temperature brazing length can reach about 600mm, breaches the bottleneck of high-temperature soldering length at below 300mm.
4, low temperature brazing solves the various difficulties that large-area brazing can not be processed for a long time, and not only empty weldering is few, and Wimet occurs that the situation of crackle and fracture also significantly reduces, and advantage is obvious especially compared with high temperature brazing.
Embodiment
The present invention will be further described below, but protection scope of the present invention is not limited to the following stated.
[embodiment 1]:
A kind of employing low temperature brazing weldable steel part and inserted tool method, it comprises the following steps:
S1, pre-treatment: carbide chip is carried out sandblasting, then carry out cleaning and degreasing process respectively by parent steel part, carbide chip and solder;
S2, welding copper: be heated to be cooked into pasty state by brazing flux, brazing flux is applied to the surface of parent steel part, solder, copper sheet and carbide chip again, and solder is added between parent steel part and copper sheet, at the copper of welding surface-welding one layer of 0.25mm thickness of parent steel part, equally, the copper of one layer of 0.25mm thickness is also welded on the welding surface of carbide chip;
S3, welded after, immediately parent steel part and carbide chip are placed in the holding furnace of 280 DEG C insulation 6 hours after, slow cooling, slow cooling is specially cooling per hour and is no more than 30 DEG C, when temperature drops to 100 DEG C, then closing holding furnace after being incubated 12h, furnace cooling is to normal temperature;
The surface of S4, milling brazing: the copper that the parent steel part and carbide chip that are welded with copper are fallen in milling machine milling respectively 0.10mm, the surface planarity after milling ensures between 0��0.03mm, removes welding slag;
S5, heating and soaking: the face of weld of carbide chip is placed on the face of weld of parent steel part, adopt high-frequency induction slowly to heat bottom parent steel part, and temperature is controlled at 300 DEG C, soaking, when solder starts to melt also energy unrestricted flow, stop heating, when solder flowing is not smooth, continue heating, so 2 times repeatedly, in this process, changing of the relative positions carbide chip, carbide chip is welded on parent steel part the most at last;
S6, slow cooling: in the holding furnace of 150 DEG C, furnace cooling is to normal temperature;
S7, scarfing cinder: after Wetted constructures, remove welding slag, checks without after empty weldering, obtains product.
[embodiment 2]:
A kind of employing low temperature brazing weldable steel part and inserted tool method, it is characterised in that: it comprises the following steps:
S1, pre-treatment: carbide chip is carried out sandblasting, then carry out cleaning and degreasing process respectively by parent steel part, carbide chip and solder;
S2, welding copper: be heated to be cooked into pasty state by brazing flux, brazing flux is applied to the surface of parent steel part, solder, copper sheet and carbide chip again, and solder is added between parent steel part and copper sheet, at the copper of welding surface-welding one layer of 0.4mm thickness of parent steel part, equally, at the copper of welding surface-welding one layer of 0.35mm thickness of carbide chip;
S3, welded after, immediately parent steel part and carbide chip are placed in the holding furnace of 290 DEG C insulation 6.5 hours after, slow cooling, slow cooling is specially cooling per hour and is no more than 30 DEG C, when temperature drops to 125 DEG C, then closing holding furnace after being incubated 11h, furnace cooling is to normal temperature;
The surface of S4, milling brazing: the copper that the parent steel part and carbide chip that are welded with copper are fallen in milling machine milling respectively 0.09mm, the surface planarity after milling ensures between 0��0.03mm, removes welding slag;
S5, heating and soaking: the face of weld of carbide chip is placed on the face of weld of parent steel part, adopt high-frequency induction slowly to heat bottom parent steel part, and temperature is controlled between 280 DEG C, soaking, when solder starts to melt also energy unrestricted flow, stop heating, when solder flowing is not smooth, continue heating, so 4 times repeatedly, in this process, changing of the relative positions carbide chip, carbide chip is welded on parent steel part the most at last;
S6, slow cooling: in the holding furnace of 130 DEG C, furnace cooling is to normal temperature;
S7, scarfing cinder: after Wetted constructures, remove welding slag, checks without after empty weldering, obtains product.
[embodiment 3]:
A kind of employing low temperature brazing weldable steel part and inserted tool method, it is characterised in that: it comprises the following steps:
S1, pre-treatment: carbide chip is carried out sandblasting, then carry out cleaning and degreasing process respectively by parent steel part, carbide chip and solder;
S2, welding copper: be heated to be cooked into pasty state by brazing flux, brazing flux is applied to the surface of parent steel part, solder, copper sheet and carbide chip again, and solder is added between parent steel part and copper sheet, at the copper of welding surface-welding one layer of 0.5mm thickness of parent steel part, equally, the copper of one layer of 0.5mm thickness is also welded on the welding surface of carbide chip;
S3, welded after, immediately parent steel part and carbide chip are placed in the holding furnace of 300 DEG C insulation 7 hours after, slow cooling, slow cooling is specially cooling per hour and is no more than 30 DEG C, when temperature drops to 150 DEG C, then closing holding furnace after being incubated 10h, furnace cooling is to normal temperature;
The surface of S4, milling brazing: the copper that the parent steel part and carbide chip that are welded with copper are fallen in milling machine milling respectively 0.08mm, the surface planarity after milling ensures between 0��0.03mm, removes welding slag;
S5, heating and soaking: the face of weld of carbide chip is placed on the face of weld of parent steel part, adopt high-frequency induction slowly to heat bottom parent steel part, and temperature is controlled between 260 DEG C, soaking, when solder starts to melt also energy unrestricted flow, stop heating, when solder flowing is not smooth, continue heating, so 6 times repeatedly, in this process, changing of the relative positions carbide chip, carbide chip is welded on parent steel part the most at last;
S6, slow cooling: in the holding furnace of 100 DEG C, furnace cooling is to normal temperature;
S7, scarfing cinder: after Wetted constructures, remove welding slag, checks without after empty weldering, obtains product.
Claims (3)
1. one kind adopts low temperature brazing weldable steel part and inserted tool method, it is characterised in that: it comprises the following steps:
S1, pre-treatment: carbide chip is carried out sandblasting, then carry out cleaning and degreasing process respectively by parent steel part, carbide chip and solder;
S2, welding copper: be heated to be cooked into pasty state by brazing flux, brazing flux is applied to the surface of parent steel part, solder, copper sheet and carbide chip again, and solder is added between parent steel part and copper sheet, at the copper of welding surface-welding one layer of 0.25��0.5mm thickness of parent steel part, equally, the copper of one layer of 0.25��0.5mm thickness is also welded on the welding surface of carbide chip;
S3, welded after, immediately parent steel part and carbide chip are placed in the holding furnace of 280 DEG C ~ 300 DEG C insulation 6 ~ 7 hours after, slow cooling, when temperature drops to 100 DEG C ~ 150 DEG C, then closes holding furnace after being incubated 10��12h, and furnace cooling is to normal temperature;
The surface of S4, milling brazing: the copper that the parent steel part and carbide chip that are welded with copper are fallen in milling machine milling respectively 0.08��0.10mm, the surface planarity after milling ensures between 0��0.03mm, removes welding slag;
S5, heating and soaking: the face of weld of carbide chip is placed on the face of weld of parent steel part, slowly bottom heating parent steel part, soaking, when solder starts to melt also energy unrestricted flow, stops heating, when solder flowing is not smooth, continue heating, 2��6 times so repeatedly, in this process, changing of the relative positions carbide chip, carbide chip is welded on parent steel part the most at last;
S6, slow cooling: in the holding furnace of 100 DEG C ~ 150 DEG C, furnace cooling is to normal temperature;
S7, scarfing cinder: after Wetted constructures, remove welding slag, checks without after empty weldering, obtains product.
2. one according to claim 1 adopts low temperature brazing weldable steel part and inserted tool method, it is characterised in that: in step s3, slow cooling is specially cooling per hour and is no more than 30 DEG C.
3. one according to claim 1 adopts low temperature brazing weldable steel part and inserted tool method, it is characterised in that: in step s 5, adopt high-frequency induction heating, and temperature is controlled between 260 DEG C ~ 300 DEG C.
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| CN201510105914.9A CN104668686B (en) | 2015-03-11 | 2015-03-11 | A kind of employing low temperature brazing weldable steel part and inserted tool method |
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| CN201510105914.9A CN104668686B (en) | 2015-03-11 | 2015-03-11 | A kind of employing low temperature brazing weldable steel part and inserted tool method |
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| CN104668686B true CN104668686B (en) | 2016-06-01 |
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| CN109807576A (en) * | 2019-04-04 | 2019-05-28 | 上海永桦合金工具有限公司 | The processing technology of outer chamfer push-pull knife in a kind of bonding is golden |
| CN110216343A (en) * | 2019-07-17 | 2019-09-10 | 无锡市宝赛德机械制造有限公司 | The production technology of carbide bit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909917A (en) * | 1973-08-09 | 1975-10-07 | Viktor Fedorovich Lebedev | Method of brazing refractory metals and compounds based thereon |
| JPS5230755A (en) * | 1975-09-05 | 1977-03-08 | Hitachi Cable | Method to manufacture composite metal tubes |
| CN1428222A (en) * | 2001-12-27 | 2003-07-09 | 西北有色金属研究院 | Welding method of hard alloy cutting tool |
| JP2010052015A (en) * | 2008-08-28 | 2010-03-11 | Nhk Spring Co Ltd | Method for producing different material-joined body and different material-joined body by the method |
| CN103071878A (en) * | 2013-01-11 | 2013-05-01 | 中国矿业大学 | Braze welding method for hard alloy and low-alloy and high-strength steel |
| CN103100834A (en) * | 2013-01-28 | 2013-05-15 | 哈尔滨工业大学 | Manufacturing method for hard alloy steel compound tool |
-
2015
- 2015-03-11 CN CN201510105914.9A patent/CN104668686B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909917A (en) * | 1973-08-09 | 1975-10-07 | Viktor Fedorovich Lebedev | Method of brazing refractory metals and compounds based thereon |
| JPS5230755A (en) * | 1975-09-05 | 1977-03-08 | Hitachi Cable | Method to manufacture composite metal tubes |
| CN1428222A (en) * | 2001-12-27 | 2003-07-09 | 西北有色金属研究院 | Welding method of hard alloy cutting tool |
| JP2010052015A (en) * | 2008-08-28 | 2010-03-11 | Nhk Spring Co Ltd | Method for producing different material-joined body and different material-joined body by the method |
| CN103071878A (en) * | 2013-01-11 | 2013-05-01 | 中国矿业大学 | Braze welding method for hard alloy and low-alloy and high-strength steel |
| CN103100834A (en) * | 2013-01-28 | 2013-05-15 | 哈尔滨工业大学 | Manufacturing method for hard alloy steel compound tool |
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Address after: 610000, No. 96, South Road, Chengdu economic and Technological Development Zone (Longquanyi District, Sichuan) Patentee after: Chengdu Great Wall cutting tools Co., Ltd Address before: 610000, No. 96, South Road, Chengdu economic and Technological Development Zone (Longquanyi District, Sichuan) Patentee before: CHENGDU GERUN HI-TECH MATERIALS Co.,Ltd. |