CN110205525A - A kind of eight shaft gear case of light-weighted aluminium alloy and its low pressure metal mould casting process - Google Patents
A kind of eight shaft gear case of light-weighted aluminium alloy and its low pressure metal mould casting process Download PDFInfo
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- CN110205525A CN110205525A CN201910567455.4A CN201910567455A CN110205525A CN 110205525 A CN110205525 A CN 110205525A CN 201910567455 A CN201910567455 A CN 201910567455A CN 110205525 A CN110205525 A CN 110205525A
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- 238000005266 casting Methods 0.000 title claims abstract description 107
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000002844 melting Methods 0.000 claims abstract description 28
- 230000008018 melting Effects 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 33
- 239000004411 aluminium Substances 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 229910052712 strontium Inorganic materials 0.000 claims description 12
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000011572 manganese Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910000521 B alloy Inorganic materials 0.000 claims description 5
- 229910001278 Sr alloy Inorganic materials 0.000 claims description 5
- FWGZLZNGAVBRPW-UHFFFAOYSA-N alumane;strontium Chemical compound [AlH3].[Sr] FWGZLZNGAVBRPW-UHFFFAOYSA-N 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000007872 degassing Methods 0.000 claims description 5
- 238000004925 denaturation Methods 0.000 claims description 5
- 230000036425 denaturation Effects 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000007528 sand casting Methods 0.000 abstract description 3
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 11
- 239000002893 slag Substances 0.000 description 7
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000007499 fusion processing Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000010120 permanent mold casting Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of light-weighted eight shaft gear case of aluminium alloy and its low pressure metal mould casting process provided by the invention comprising step: aluminium alloy stock melting is formed casting liquid by S100 melting and casting liquid；S200 low-pressure casting, multisection type boosting casting, casting pressure are 0.2MPa~0.6MPa, and pouring temperature is 710 DEG C~730 DEG C；S300 die sinking top takes casting.To substitute eight shaft gear case of magnesium iron by eight shaft gear case of low pressure metal mold casting aluminium alloy, realize lightweight and energy conservation, traditional sand casting is substituted using low pressure metal mold casting, improves the mechanical performance of aluminum alloy gear case, while manufacturing cost is effectively reduced and accomplishes environmental protection, emission reduction conscientiously.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials technical fields, specifically, being a kind of eight axis tooth of light-weighted aluminium alloy
Roller box and its low pressure metal mould casting process.
Background technique
It is many originally from the technology of external import, part even whole set facility, all state with the development of Chinese manufacturing
Productionization, and be constantly updated, manufacturing process more considers environmental protection, and manufacturing cost is lower.Gear-box is handed over as large-scale track
Important accessory on logical power vehicle, development experience import, production domesticization at home, from original alloy cast iron gradually to lightweight
Development.
Structure is complicated for eight shaft gear casees, and the load being subjected to is larger, and performance quality directly affects high speed motive force locomotive
Operation, the requirement to gear-box is more stringent, it is necessary to reach higher intensity, rigidity and moulding, thus eight shaft gear casees one
As requirement met by Ductile Iron Casting, since the appearance structure of eight shaft gear casees is complicated, casting mould inner cavity needs 8
Sand core combines to be formed, and casting technique difficult point is more.The made gear-box of conventional method is heavier, poor corrosion resistance, machining cost
It is high.Nowadays original ductile iron material is gradually substituted with high-strength aluminum alloy material, the general traditional handicraft of method for casting aluminium alloy is adopted
It is sand mold low pressure casting, but disadvantage is a lot of.When casting manufacture especially with sand, resin and sand grains are mixed and made into resin sand,
When resin is burnt by aluminum water, generate biggish penetrating odor, cause environmental pollution, influence operating space environment and
The health of operator, while resin belongs to natural energy resources, long-time service causes waste also to increase manufacturing cost.In addition,
Due to the light specific gravity of aluminium, the impurity and slag inclusion cast in liquid are easy to be involved in molten aluminum, are easier that casting shrinkage cavity or shrinkage porosite is caused to lack
Sunken appearance, seriously affects properties of product, so that the aluminum alloy materials performance of sand mold low pressure casting is not high.
Summary of the invention
The main purpose of the present invention is to provide a kind of light-weighted eight shaft gear casees of aluminium alloy and its low pressure metal type to cast
Technique is made, eight shaft gear case of magnesium iron is substituted by eight shaft gear case of low pressure metal mold casting aluminium alloy, realizes lightweight and section
Can, traditional sand casting is substituted using low pressure metal mold casting, the mechanical performance of aluminum alloy gear case is improved, is effectively reduced simultaneously
Manufacturing cost simultaneously accomplishes environmental protection, emission reduction conscientiously.
To achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of light-weighted eight shaft gear case of aluminium alloy,
Al alloy component is silicon 6.5%~7.5%, magnesium 0.25%~0.45%, titanium 0.08%~0.2%, manganese by mass percentage
≤ 0.1%, zinc≤0.1%, zirconium≤0.2%, copper≤0.1%, iron≤0.2%, boron 0.1%~0.3%, strontium 0.2%~
0.4%, surplus is aluminium.
An embodiment according to the present invention, the al alloy component be by mass percentage silicon 7.13%, magnesium 0.38%,
Titanium 0.1%, manganese≤0.01%, zinc≤0.01%, zirconium≤0.02%, copper≤0.01%, iron≤0.1%, boron 0.2%, strontium
0.3%, surplus is aluminium.
A kind of low pressure metal mould casting process of eight shaft gear case of light-weighted aluminium alloy comprising step:
Aluminium alloy stock melting is formed casting liquid by S100 melting and casting liquid；
S200 low-pressure casting, multisection type boosting casting, casting pressure are 0.2MPa~0.6MPa, and pouring temperature is 710 DEG C
~730 DEG C；
S300 die sinking top takes casting.
An embodiment according to the present invention, the step S100 comprising steps of
S110 is by aluminium ingot melting to 670 DEG C~690 DEG C；
Al-Ti-B alloy is added in S120, to improve the comprehensive mechanical performance of molten aluminum；
S130 adds aluminium strontium alterant and carries out refinement and denaturation processing at 700 DEG C~720 DEG C；
S140 carries out refining degasification 8~15 minutes using argon gas using rotary getter, removes molten aluminum impurity, melting is extremely
730 DEG C~750 DEG C.
An embodiment according to the present invention, the aluminium ingot are ZL101A, and the content of strontium is 10% in al-sr alloy.
An embodiment according to the present invention, the step S200 comprising steps of
S210 use ceramic lift tube, 710 DEG C -730 DEG C of pouring temperature；
S220 initial pressure 0.2Mpa~0.4Mpa, first stage rise liquid 5s~15s, according to holding furnace liquid level and mold into
Material mouth bottom surface is apart from setting time；
S230 second stage rises liquid 50s~70s, while pressure is ramped up 0.45Mpa~0.55Mpa.Because of casting weight
240 kilograms, dead head weight is 120 kg, and to ensure that molten aluminum is steady, unhurried current is dynamic, therefore setting time is longer；
The S240 phase III, which sets, rises liquid time 40s~60s, uniformly boosts to 0.5Mpa~0.6Mpa.Due to casting and
Riser height is about 400 millimeters, and projected area is big, and inner cavity whole sand core, gas forming amount is big, therefore setting casting time is longer, really
The exhaust of guarantor's casting, collection slag are smooth；
S250 dwell time 650s~720s, setting time 320s~400s.
An embodiment according to the present invention is respectively initial pressure in the three phases pressure of the step S200
0.33MPa, second stage pressure rise to 0.5MPa, and phase III pressure rises to 0.55MPa.
An embodiment according to the present invention, the dwell time of the step S250 are 680s, setting time 360s.
An embodiment according to the present invention, the low pressure metal mould casting process of the light-weighted eight shaft gear case of aluminium alloy
Further comprise step: S400 is cast liquid feeding manner and is fed using going up or down stairway bilayer, and each layer of feed inlet forms ring gate,
Multiple ingates are set on running channel.
An embodiment according to the present invention, the step S400 specifically include step:
S410 is fed in going up or down stairway bilayer, and casting liquid enters along the ring gate of each layer of feed inlet, and each annular is poured
6~8 ingates are distributed on road, cast liquid from the ingate evenly into inner cavity, so that ingate uniform heat distribution；
Dead head back-pressure is arranged in each ingate in S420, is able to collection slag, feeding and heat preservation；
S430 carries out the cooling of delay water and the processing of synchronous air cooling, so that the part of casting in the thick general goal in the part of casting
Thick general goal can be quickly cooled down.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Embodiment 1
A kind of ingredient of eight shaft gear case of light-weighted aluminium alloy be by mass percentage silicon 7.13%, magnesium 0.38%,
Titanium 0.1%, manganese≤0.01%, zinc≤0.01%, zirconium≤0.02%, copper≤0.01%, iron≤0.1%, boron 0.2%, strontium
0.3%, surplus is aluminium.
A kind of casting technique of eight shaft gear case of light-weighted aluminium alloy comprising step:
(1) aluminium alloy stock melting is formed casting liquid, wherein fusion process includes 4 steps by melting and casting liquid:
(1.1) by aluminium ingot melting to 680 DEG C；
(1.2) Al-Ti-B alloy is added, to improve the comprehensive mechanical performance of molten aluminum；
(1.3) it at 710 DEG C, adds aluminium strontium alterant and carries out refinement and denaturation processing；
(1.4) refining degasification 12 minutes is carried out using argon gas using rotary getter, removes molten aluminum impurity, melting is extremely
740℃。
Wherein, aluminium ingot ZL101A, the content of strontium is 10% in al-sr alloy.
(2) multisection type low pressure casting specifically includes step:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) initial pressure 0.33Mpa, first stage rise liquid 10s, according to holding furnace liquid level and die feeding mouth bottom surface away from
From setting time；
(2.3) second stage rises liquid 60s, while pressure is ramped up 0.5Mpa.Because of 240 kilograms of casting weight, dead head
Weight is 120 kg, and to ensure that molten aluminum is steady, unhurried current is dynamic, therefore setting time is longer；
(2.4) phase III setting rises liquid time 50s, uniformly boosts to 0.55Mpa.Casting and 400 millimeters of riser height,
Projected area is big, and inner cavity whole sand core, gas forming amount is big, therefore it is longer to set casting time, it is ensured that casting exhaust, collection slag are smooth；
(2.5) dwell time 680s, setting time 360s, then die sinking top takes casting.
Wherein, the mould structure of the eight shaft gear case of light-weighted aluminium alloy be using extra quality import, 2 on casting at
Flange is fed jointly, and mould structure is also to design double feed inlets, and low-pressure die casting plant also matches double stalks；Simultaneously because casting is high
Degree is higher, and design is divided into the charging of going up or down stairway bilayer, and each layer of feed design ring gate, double feed inlets need to be arranged at 2
Ring gate is distributed 6-8 ingate on each ring gate, makes the distribution of ingate even heat.
Wherein, round dead head back-pressure is arranged in each ingate, for collecting slag, feeding, heat preservation；It is thick big in the part of casting
Place needs to do delay water-cooling apparatus and synchronous air cooling equipment, and the thick general goal in part is enable to be quickly cooled down；Inner cavity sand core is precoated sand
Sand core, sand core are arranged 20 millimeters of wall thickness, 25 millimeters are arranged at dead head, and add reinforcing rib, reserve on metal type dies
Exhaust outlet, or setting negative pressure ventilation device.
Embodiment 2
A kind of mould structure of eight shaft gear case of light-weighted aluminium alloy presses quality with embodiment 1, the al alloy component
Percentage be calculated as silicon 6.5%, magnesium 0.25%, titanium 0.2%, manganese≤0.01%, zinc≤0.01%, zirconium≤0.02%, copper≤
0.01%, iron≤0.1%, boron 0.3%, strontium 0.2%, surplus are aluminium.
A kind of casting technique of eight shaft gear case of light-weighted aluminium alloy comprising step:
(1) aluminium alloy stock melting is formed casting liquid, wherein fusion process includes 4 steps by melting and casting liquid:
(1.1) by 100% melting of aluminium ingot to 670 DEG C；
(1.2) Al-Ti-B alloy is added, to improve the comprehensive mechanical performance of molten aluminum；
(1.3) it at 700 DEG C, adds aluminium strontium alterant and carries out refinement and denaturation processing；
(1.4) refining degasification 8 minutes is carried out using argon gas using rotary getter, removes molten aluminum impurity, melting to 740
℃。
Wherein, aluminium ingot ZL101A, the content of strontium is 10% in al-sr alloy.
(2) multisection type low pressure casting specifically includes step:
(2.1) use ceramic lift tube, 740 DEG C of pouring temperature；
(2.2) initial pressure 0.3Mpa, first stage rise liquid 15s, according to holding furnace liquid level and die feeding mouth bottom surface away from
From setting time；
(2.3) second stage rises liquid 50s, while pressure is ramped up 0.45Mpa.Because of 240 kilograms of casting weight, dead head
Weight is 120 kg, and to ensure that molten aluminum is steady, unhurried current is dynamic, therefore setting time is longer；
(2.4) phase III setting rises liquid time 40s, uniformly boosts to 0.5Mpa.Casting and 400 millimeters of riser height,
Projected area is big, and inner cavity whole sand core, gas forming amount is big, therefore it is longer to set casting time, it is ensured that casting exhaust, collection slag are smooth；
(2.5) dwell time 650s, setting time 320s, then die sinking top takes casting.
Embodiment 3
A kind of mould structure of eight shaft gear case of light-weighted aluminium alloy presses quality with embodiment 1, the al alloy component
Percentage be calculated as silicon 7.5%, magnesium 0.45%, titanium 0.08%, manganese≤0.01%, zinc≤0.01%, zirconium≤0.02%, copper≤
0.01%, iron≤0.1%, boron 0.1%, strontium 0.4%, surplus are aluminium.
A kind of casting technique of eight shaft gear case of light-weighted aluminium alloy comprising step:
(1) aluminium alloy stock melting is formed casting liquid, wherein fusion process includes 4 steps by melting and casting liquid:
(1.1) by 100% melting of aluminium ingot to 690 DEG C；
(1.2) Al-Ti-B alloy is added, to improve the comprehensive mechanical performance of molten aluminum；
(1.3) it at 720 DEG C, adds aluminium strontium alterant and carries out refinement and denaturation processing；
(1.4) refining degasification 15 minutes is carried out using argon gas using rotary getter, removes molten aluminum impurity, melting is extremely
740℃。
Wherein, aluminium ingot ZL101A, the content of strontium is 10% in al-sr alloy.
(2) multisection type low pressure casting specifically includes step:
(2.1) use ceramic lift tube, 740 DEG C of pouring temperature；
(2.2) initial pressure 0.4Mpa, the first stage rises liquid 5s, according to holding furnace liquid level and die feeding mouth bottom surface distance
Setting time；
(2.3) second stage rises liquid 70s, while pressure is ramped up 0.55Mpa.Because of 240 kilograms of casting weight, dead head
Weight is 120 kg, and to ensure that molten aluminum is steady, unhurried current is dynamic, therefore setting time is longer；
(2.4) phase III setting rises liquid time 60s, uniformly boosts to 0.6Mpa.Casting and 400 millimeters of riser height,
Projected area is big, and inner cavity whole sand core, gas forming amount is big, therefore it is longer to set casting time, it is ensured that casting exhaust, collection slag are smooth；
(2.5) dwell time 720s, setting time 400s, then die sinking top takes casting.
Embodiment 4
The step of al alloy component and melting and casting liquid of embodiment 4, is with embodiment 1, the difference is that embodiment 4
Low pressure casting step is different:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) pressure is set as 0.5Mpa, and setting rises liquid time 120s；
(2.3) dwell time 680s, setting time 360s, then die sinking top takes casting.
Embodiment 5
The step of al alloy component and melting and casting liquid of embodiment 5, is with embodiment 1, the difference is that embodiment 5
Low pressure casting step is different:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) initial pressure 0.3Mpa, first stage rise liquid 10s；
(2.3) second stage rises liquid 110s, while pressure is ramped up 0.5Mpa；
(2.4) dwell time 680s, setting time 360s, then die sinking top takes casting.
Embodiment 6
The step of al alloy component and melting and casting liquid of embodiment 6, is with embodiment 1, the difference is that embodiment 6
Low pressure casting step is different:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) initial pressure 0.2Mpa, first stage rise liquid 20s；
(2.3) second stage rises liquid 50s, while pressure is ramped up 0.5Mpa；
(2.4) phase III setting rises liquid time 40s, uniformly boosts to 0.55Mpa；
(2.5) dwell time 680s, setting time 360s, then die sinking top takes casting.
Embodiment 7
The step of al alloy component and melting and casting liquid of embodiment 7, is with embodiment 1, the difference is that embodiment 7
Low pressure casting step is different:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) initial pressure 0.33Mpa, first stage rise liquid 10s；
(2.3) second stage rises liquid 30s, while pressure is ramped up 0.5Mpa；
(2.4) phase III setting rises liquid time 20s, uniformly boosts to 0.55Mpa；
(2.5) dwell time 680s, setting time 360s, then die sinking top takes casting.
Embodiment 8
The step of al alloy component and melting and casting liquid of embodiment 8, is with embodiment 1, the difference is that embodiment 8
Low pressure casting step is different:
(2.1) use ceramic lift tube, 720 DEG C of pouring temperature；
(2.2) initial pressure 0.33Mpa, first stage rise liquid 10s；
(2.3) second stage rises liquid 60s, while pressure is ramped up 0.4Mpa；
(2.4) phase III setting rises liquid time 50s, uniformly boosts to 0.45Mpa；
(2.5) dwell time 680s, setting time 360s, then die sinking top takes casting.
Comparative example 1
The step of al alloy component and melting and casting liquid of embodiment 1, is with embodiment 1, the difference is that embodiment 9
Casting step is different, is cast by conventional resins sand, 720 DEG C of pouring temperature, is uniformly boosted in initial pressure 0.33Mpa, 10s
0.5Mpa, 15s complete die casting, pressure maintaining 40s.
The performance test of Examples 1 to 8 and the made casting of comparative example is drawn according to the metal material of GB/T228.1-2010
Stretch testing standard and the metal material Brinell hardness standard of GB/T231.1-2009.Surveyed performance is shown in Table 1.
The performance test of 1 Examples 1 to 8 of table and the made casting of comparative example 1
Seen from table 1, the cast properties that metal casting casts out are better than sand casting；Metal casting mould simultaneously
Mechanical dimension is more reliable and more stable, is more conducive to producing in batches, and process control is more humane, intelligent；Permanent mold casting energy
Casting cost is saved, 400 kilograms of sand grains are needed if the casting of the resin sand of traditional approach is a set of, are only needed in permanent mold casting
100 kilograms of sand grains reduces exhaust gas discharge, is more energy-saving and environmentally friendly, the casting of appearance of cast of permanent mold casting to save sand grains resource
More attractive, die life is longer.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of eight shaft gear case of light-weighted aluminium alloy, which is characterized in that al alloy component is silicon by mass percentage
6.5%~7.5%, magnesium 0.25%~0.45%, titanium 0.08%~0.2%, manganese≤0.1%, zinc≤0.1%, zirconium≤0.2%,
Copper≤0.1%, iron≤0.2%, boron 0.1%~0.3%, strontium 0.2%~0.4%, surplus are aluminium.
2. eight shaft gear case of light-weighted aluminium alloy according to claim 1, which is characterized in that the al alloy component is pressed
Mass percent be calculated as silicon 7.13%, magnesium 0.38%, titanium 0.1%, manganese≤0.01%, zinc≤0.01%, zirconium≤0.02%, copper≤
0.01%, iron≤0.1%, boron 0.2%, strontium 0.3%, surplus are aluminium.
3. the low pressure metal mould casting process of the eight shaft gear case of light-weighted aluminium alloy as described in claim 1~2, feature
It is, comprising steps of
Aluminium alloy stock melting is formed casting liquid by S100 melting and casting liquid；
S200 low-pressure casting, multisection type boosting casting, casting pressure are 0.2MPa~0.6MPa, and pouring temperature is 710 DEG C~730
℃；
S300 die sinking top takes casting.
4. casting technique according to claim 3, which is characterized in that the step S100 comprising steps of
S110 is by aluminium ingot melting to 670 DEG C~690 DEG C；
Al-Ti-B alloy is added in S120；
S130 adds aluminium strontium alterant and carries out refinement and denaturation processing at 700 DEG C~720 DEG C；
S140 carries out refining degasification 8~15 minutes using argon gas using rotary getter, removes molten aluminum impurity, melting to 730
DEG C~750 DEG C.
5. casting technique according to claim 3, which is characterized in that the aluminium ingot is ZL101A, strontium in al-sr alloy
Content is 10%.
6. casting technique according to claim 3, which is characterized in that the step S200 comprising steps of
S210 use ceramic lift tube, 710 DEG C -730 DEG C of pouring temperature；
S220 initial pressure 0.2Mpa~0.4Mpa, the first stage rises liquid 5s~15s, according to holding furnace liquid level and die feeding mouth
Bottom surface is apart from setting time；
S230 second stage rises liquid 50s~70s, while pressure is ramped up 0.45Mpa~0.55Mpa；
The S240 phase III, which sets, rises liquid time 40s~60s, uniformly boosts to 0.5Mpa~0.6Mpa；
S250 dwell time 650s~720s, setting time 320s~400s.
7. casting technique according to claim 6, which is characterized in that distinguish in the three phases pressure of the step S200
For initial pressure 0.33MPa, second stage pressure rises to 0.5MPa, and phase III pressure rises to 0.55MPa.
8. casting technique according to claim 6, which is characterized in that the dwell time of the step S250 is 680s, is coagulated
Gu the time is 360s.
9. according to the casting technique any in claim 3~8, which is characterized in that it further comprises step: S400 casting
Liquid feeding manner is fed using going up or down stairway bilayer, and each layer of feed inlet forms ring gate, is arranged in multiple on running channel and is poured
Mouthful.
10. casting technique according to claim 9, which is characterized in that the step S400 specifically includes step:
S410 is fed in going up or down stairway bilayer, and casting liquid enters along the ring gate of each layer of feed inlet, on each ring gate
6~8 ingates are distributed with, cast liquid from the ingate evenly into inner cavity, so that ingate uniform heat distribution；
Dead head back-pressure is arranged in each ingate in S420；
S430 carries out the cooling of delay water and the processing of synchronous air cooling in the thick general goal in the part of casting, so that the part of casting is thick big
Place is quickly cooled down.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618276A (en) * | 2020-07-18 | 2020-09-04 | 常州嘉阳轻合金有限公司 | Low-pressure casting process of iron eight-axis aluminum alloy gearbox |
| CN111910094A (en) * | 2020-07-18 | 2020-11-10 | 江苏雷科德轨道交通科技有限公司 | Preparation process of aluminum alloy for high-elongation gear box |
| CN111974969A (en) * | 2020-07-22 | 2020-11-24 | 江苏宏德特种部件股份有限公司 | Casting process of aluminum alloy gear box for high-speed rail |
| CN115612896A (en) * | 2022-10-11 | 2023-01-17 | 福伊特路通城铁变速箱技术(长春)有限公司 | Aluminum alloy, application of aluminum alloy and preparation method of railway vehicle gearbox body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693508A (en) * | 2005-05-17 | 2005-11-09 | 郑州大学 | Aluminium alloy model fine crystal aluminium ingot for wheel hub and its manufacturing method |
-
2019
- 2019-06-27 CN CN201910567455.4A patent/CN110205525B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693508A (en) * | 2005-05-17 | 2005-11-09 | 郑州大学 | Aluminium alloy model fine crystal aluminium ingot for wheel hub and its manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 波尔米尔，I.J.: "《轻合金》", 31 August 1985, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618276A (en) * | 2020-07-18 | 2020-09-04 | 常州嘉阳轻合金有限公司 | Low-pressure casting process of iron eight-axis aluminum alloy gearbox |
| CN111910094A (en) * | 2020-07-18 | 2020-11-10 | 江苏雷科德轨道交通科技有限公司 | Preparation process of aluminum alloy for high-elongation gear box |
| CN111974969A (en) * | 2020-07-22 | 2020-11-24 | 江苏宏德特种部件股份有限公司 | Casting process of aluminum alloy gear box for high-speed rail |
| CN115612896A (en) * | 2022-10-11 | 2023-01-17 | 福伊特路通城铁变速箱技术(长春)有限公司 | Aluminum alloy, application of aluminum alloy and preparation method of railway vehicle gearbox body |
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