CN105397065A - Extrusion casting production technology of car clutch shell - Google Patents
Extrusion casting production technology of car clutch shell Download PDFInfo
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- CN105397065A CN105397065A CN201510763104.2A CN201510763104A CN105397065A CN 105397065 A CN105397065 A CN 105397065A CN 201510763104 A CN201510763104 A CN 201510763104A CN 105397065 A CN105397065 A CN 105397065A
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- 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
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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Abstract
The invention relates to an extrusion casting production technology of a car clutch shell. The production technology comprises processes of smelting, die assembling, feeding, injection, extrusion, die opening and spraying. The extrusion casting technology is adopted, technological parameters of smelting and extrusion casting are optimized, and a manufactured car aluminum clutch shell casting is compact and even in internal structure and fine and small in grain particle; and the higher tensile strength is achieved, the higher yield strength and the higher hardness are achieved, the workblank precision is improved, the machining allowance is reduced, low consumption of resources and energy is achieved, and economic benefits are improved.
Description
Technical field
The present invention relates to a kind of production technology of automobile clutch shell, especially relate to a kind of extrusion casint production technology of automobile clutch shell, belong to automobile component manufacturing technology field.
Background technology
Automobile clutch shell is important parts in light-duty vehicle, and two ends are connected with engine with gearbox body respectively, need bear comparatively high pulling torque.The common manufacturing process of automobile clutch shell has: aluminium alloy compression casting, spheroidal graphite cast-iron sand casting.Adopt the clutch housing of Die Casting, there is more pore, shrinkage cavity in foundry goods, products air tightness is poor, and mechanical property is limited, be unfavorable for power transmission, in press casting procedure, normal appearance exhaust is bad, and aluminium alloy easily rolls up gas, together die casting progressive die tool, make cast structure gassiness, also with defects such as cold shut, deficient castings, cause the mechanical performance of goods to reduce, and can not heat-treat and weld.The clutch housing that the sand casting of employing spheroidal graphite cast-iron is produced, casting quality is large, rough surface, and also because of the cast iron graphitization expansion characteristic that the phase is intrinsic after solidification, dimensional accuracy is low, and amount of machining is large, and cost is high.
Extrusion casint imposes higher mechanical pressure to the liquid metal be poured in casting mold, and make it shapingly solidify, thus obtain a kind of technique of foundry goods, and casting can combine with Forging Technology by this technique effectively, the part of preparation quality excellence.
At present, the relevant report adopting squeeze casting technology to produce automobile clutch shell is not yet had.
Summary of the invention
The object of this invention is to provide a kind of extrusion casint production technology of automobile clutch shell, make the aluminium alloys for automobile clutch housing cast-internal dense structure of manufacture even, crystal grain is tiny, has higher tensile strength, higher yield strength and hardness; Improve semifinished product precision, reduce allowance, realize the low consumption of resource and the energy, impel the raising of economic benefit.
Object of the present invention is achieved through the following technical solutions:
The extrusion casint production technology of automobile clutch shell, comprises the following steps:
1. melt: first in oil burner fusing, then proceed to tilt bed electric resistance holding furnace;
Carrying out degas operation: when temperature of aluminum liquid is 720 ~ 740 DEG C, carrying out refining by passing into nitrogen rotation degasification;
Again to the refinement of aluminium liquid and Metamorphism treatment: do grain refinement with AlTiB fining agent, make Metamorphism treatment with AlSr intermediate alloy;
Carry out refining slagging-off again: get carbon trichloride refining agent, three directions are divided to launch to be placed on aluminium liquid surface gently, with bell jar, refining agent and fining agent are slowly depressed, under aluminium liquid liquid level, the 100mm the bottom of a pan slowly circles between 100mm, move up and down, make bubble evenly to every nook and cranny, propose bell jar when liquid level bubble-free is emerged, skim;
2. matched moulds: ejector pin of die set resets, loosing core 1 ~ 2 enters, mould matched moulds;
3. feed: soup feeding machine gets aluminum alloy melt from smelting furnace, pours in barrel, and temperature of aluminum liquid is 680 ~ 700 DEG C;
4. injection: barrel is ajusted, penetrates platform rising contraposition, drift low speed upstream, aluminium alloy is steadily clamp-oned until be full of whole die cavity in mold cavity, setting pressure is applied and pressurize to drift, injection ratio pressure: 80 ~ 120MPa, dwell time is 5 ~ 15s, and mold temperature is 200 ~ 250 DEG C;
5. extrude: treat that pressurize terminates, casting solidification, drift goes downwards to limit inferior position, penetrates platform and declines;
6. die sinking: mould die sinking, loosing core 1 ~ 2 goes out, and push rod forward, ejects foundry goods;
7. spray: by releasing agent with atomised form even application at mold cavity, spraying completes, and dries up moisture.
Further, the extrusion casint production technology of above-mentioned automobile clutch shell, step is 1. in melting process during degas operation, according to smelting furnace size, setting gas flow, the rotating speed of graphite bars, degasification time.
Further, the extrusion casint production technology of above-mentioned automobile clutch shell, wherein, step is 1. in melting process during refining slagging-off, and the addition of refining agent is 0.5 ~ 0.8% of aluminium liquid measure.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progress are mainly reflected in:
1. compared with aluminum alloy die-casting technological, there is not the defects such as pore, shrinkage cavity and pin hole in the aluminium alloys for automobile clutch housing inside of Extrution casting technique manufacture, dense internal organization is even, and crystal grain is tiny, there is higher tensile strength, higher yield strength and hardness;
2. compared with spheroidal graphite cast-iron sand casting process, the aluminium alloys for automobile clutch housing of Extrution casting technique manufacture, can improve semifinished product precision, and reduce allowance, stock utilization can reach more than 90%, more effectively reduces costs;
3. extrusion casint part foundry goods mechanical performance is close to the forging level of same alloy, and there is no anisotropy usual in forging, simultaneously in conjunction with the performance advantage that wrought aluminium alloy is intrinsic, its mechanical performance is made to be much better than aluminum alloy die-casting technological, spheroidal graphite cast-iron sand casting process.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Fig. 1: the schematic front view of automobile clutch shell;
Fig. 2: the schematic side view of automobile clutch shell.
Detailed description of the invention
Embodiment 1
Fusing: first in oil burner fusing, then proceed to tilt bed electric resistance holding furnace;
Carrying out degas operation: when temperature of aluminum liquid is 720 DEG C, carrying out refining by passing into nitrogen rotation degasification;
Again to the refinement of aluminium liquid and Metamorphism treatment: do grain refinement with AlTiB fining agent, make Metamorphism treatment with AlSr intermediate alloy;
Carry out refining slagging-off again: get carbon trichloride refining agent, addition is 0.5% of aluminium liquid measure, three directions are divided to launch to be placed on aluminium liquid surface gently, with bell jar, refining agent and fining agent are slowly depressed, under aluminium liquid liquid level, the 100mm the bottom of a pan slowly circles between 100mm, move up and down, make bubble evenly to every nook and cranny, propose bell jar when liquid level bubble-free is emerged, skim;
Matched moulds: ejector pin of die set resets, loosing core 1 ~ 2 enters, mould matched moulds;
Feed: soup feeding machine gets aluminum alloy melt from smelting furnace, pours in barrel, and temperature of aluminum liquid is 700 DEG C;
Injection: barrel is ajusted, penetrates platform rising contraposition, drift low speed upstream, is steadily clamp-oned by aluminium alloy until be full of whole die cavity in mold cavity, applies setting pressure and pressurize to drift.Injection ratio pressure 120MPa, the dwell time is 5S, and mold temperature is 200 DEG C;
Extrude: treat that pressurize terminates, casting solidification, drift goes downwards to limit inferior position, penetrates platform and declines;
Die sinking: mould die sinking, loosing core 1 ~ 2 goes out, and push rod forward, ejects foundry goods;
Spraying: by releasing agent good for proportioning with atomised form even application at mold cavity, sprayed and will note drying up moisture, carried out next castings production.
Embodiment 2
Fusing: first in oil burner fusing, then proceed to tilt bed electric resistance holding furnace;
Carrying out degas operation: when temperature of aluminum liquid is 740 DEG C, carrying out refining by passing into nitrogen rotation degasification;
Again to the refinement of aluminium liquid and Metamorphism treatment: do grain refinement with AlTiB fining agent, make Metamorphism treatment with AlSr intermediate alloy;
Carry out refining slagging-off again: get carbon trichloride refining agent, addition is 0.6% of aluminium liquid measure, three directions are divided to launch to be placed on aluminium liquid surface gently, with bell jar, refining agent and fining agent are slowly depressed, under aluminium liquid liquid level, the 100mm the bottom of a pan slowly circles between 100mm, move up and down, make bubble evenly to every nook and cranny, propose bell jar when liquid level bubble-free is emerged, skim;
Matched moulds: ejector pin of die set resets, loosing core 1 ~ 2 enters, mould matched moulds;
Feed: soup feeding machine gets aluminum alloy melt from smelting furnace, pours in barrel, and temperature of aluminum liquid is 680 DEG C;
Injection: barrel is ajusted, penetrates platform rising contraposition, drift low speed upstream, is steadily clamp-oned by aluminium alloy until be full of whole die cavity in mold cavity, applies setting pressure and pressurize to drift.Injection ratio pressure 80MPa, the dwell time is 15S, and mold temperature is 250 DEG C;
Extrude: treat that pressurize terminates, casting solidification, drift goes downwards to limit inferior position, penetrates platform and declines;
Die sinking: mould die sinking, loosing core 1 ~ 2 goes out, and push rod forward, ejects foundry goods;
Spraying: by releasing agent good for proportioning with atomised form even application at mold cavity, sprayed and will note drying up moisture, carried out next castings production.
Embodiment 3
Fusing: first in oil burner fusing, then proceed to tilt bed electric resistance holding furnace;
Carrying out degas operation: when temperature of aluminum liquid is 730 DEG C, carrying out refining by passing into nitrogen rotation degasification;
Again to the refinement of aluminium liquid and Metamorphism treatment: do grain refinement with AlTiB fining agent, make Metamorphism treatment with AlSr intermediate alloy;
Carry out refining slagging-off again: get carbon trichloride refining agent, addition is 0.8% of aluminium liquid measure, three directions are divided to launch to be placed on aluminium liquid surface gently, with bell jar, refining agent and fining agent are slowly depressed, under aluminium liquid liquid level, the 100mm the bottom of a pan slowly circles between 100mm, move up and down, make bubble evenly to every nook and cranny, propose bell jar when liquid level bubble-free is emerged, skim;
Matched moulds: ejector pin of die set resets, loosing core 1 ~ 2 enters, mould matched moulds;
Feed: soup feeding machine gets aluminum alloy melt from smelting furnace, pours in barrel, and temperature of aluminum liquid is 690 DEG C;
Injection: barrel is ajusted, penetrates platform rising contraposition, drift low speed upstream, is steadily clamp-oned by aluminium alloy until be full of whole die cavity in mold cavity, applies setting pressure and pressurize to drift.Injection ratio pressure 100MPa, the dwell time is 10S, and mold temperature is 220 DEG C;
Extrude: treat that pressurize terminates, casting solidification, drift goes downwards to limit inferior position, penetrates platform and declines;
Die sinking: mould die sinking, loosing core 1 ~ 2 goes out, and push rod forward, ejects foundry goods;
Spraying: by releasing agent good for proportioning with atomised form even application at mold cavity, sprayed and will note drying up moisture, carried out next castings production.
In sum, the present invention adopts Extrution casting technique, optimizes the technological parameter of melting and extrusion casint, and make the aluminium alloys for automobile clutch housing cast-internal dense structure that manufactures even, crystal grain is tiny; There is higher tensile strength, higher yield strength and hardness; Improve semifinished product precision, reduce allowance, realize the low consumption of resource and the energy, impel the raising of economic benefit.
It is to be understood that: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the extrusion casint production technology of automobile clutch shell, is characterized in that comprising the following steps:
1. melt: first in oil burner fusing, then proceed to tilt bed electric resistance holding furnace;
Carrying out degas operation: when temperature of aluminum liquid is 720 ~ 740 DEG C, carrying out refining by passing into nitrogen rotation degasification;
Again to the refinement of aluminium liquid and Metamorphism treatment: do grain refinement with AlTiB fining agent, make Metamorphism treatment with AlSr intermediate alloy;
Carry out refining slagging-off again: get carbon trichloride refining agent, three directions are divided to launch to be placed on aluminium liquid surface gently, with bell jar, refining agent and fining agent are slowly depressed, under aluminium liquid liquid level, the 100mm the bottom of a pan slowly circles between 100mm, move up and down, make bubble evenly to every nook and cranny, propose bell jar when liquid level bubble-free is emerged, skim;
2. matched moulds: ejector pin of die set resets, loosing core 1 ~ 2 enters, mould matched moulds;
3. feed: soup feeding machine gets aluminum alloy melt from smelting furnace, pours in barrel, and temperature of aluminum liquid is 680 ~ 700 DEG C;
4. injection: barrel is ajusted, penetrates platform rising contraposition, drift low speed upstream, aluminium alloy is steadily clamp-oned until be full of whole die cavity in mold cavity, setting pressure is applied and pressurize to drift, injection ratio pressure: 80 ~ 120MPa, dwell time is 5 ~ 15s, and mold temperature is 200 ~ 250 DEG C;
5. extrude: treat that pressurize terminates, casting solidification, drift goes downwards to limit inferior position, penetrates platform and declines;
6. die sinking: mould die sinking, loosing core 1 ~ 2 goes out, and push rod forward, ejects foundry goods;
7. spray: by releasing agent with atomised form even application at mold cavity, spraying completes, and dries up moisture.
2. the extrusion casint production technology of automobile clutch shell according to claim 1, is characterized in that: step is 1. in melting process during degas operation, according to smelting furnace size, and setting gas flow, the rotating speed of graphite bars, degasification time.
3. the extrusion casint production technology of automobile clutch shell according to claim 1, is characterized in that: step is 1. in melting process during refining slagging-off, and the addition of refining agent is 0.5 ~ 0.8% of aluminium liquid measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510763104.2A CN105397065A (en) | 2015-11-10 | 2015-11-10 | Extrusion casting production technology of car clutch shell |
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| CN201510763104.2A CN105397065A (en) | 2015-11-10 | 2015-11-10 | Extrusion casting production technology of car clutch shell |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244870A (en) * | 2016-08-31 | 2016-12-21 | 宁波环亚机械制造有限公司 | A kind of production technology of automobile diecast parts |
| CN106424632A (en) * | 2016-11-29 | 2017-02-22 | 太仓市凯斯汀精密压铸有限公司 | Novel turbine disc squeeze casting forming technology |
| CN106493339A (en) * | 2016-11-06 | 2017-03-15 | 广州金邦液态模锻技术有限公司 | A kind of method for producing aluminium alloy spring base with Horizontal type extrusion casting machine |
| CN110788160A (en) * | 2019-11-07 | 2020-02-14 | 鑫鹏源智能装备集团有限公司 | Seamless steel tube production system and process |
| CN111334739A (en) * | 2019-12-30 | 2020-06-26 | 苏州三基铸造装备股份有限公司 | Surface strengthening method for extrusion casting cavity |
| CN112517884A (en) * | 2020-11-29 | 2021-03-19 | 苏州金瑞阳模具有限公司 | Extrusion casting method of aluminum alloy auxiliary frame |
| CN113000818A (en) * | 2021-02-23 | 2021-06-22 | 广州和德轻量化成型技术有限公司 | Vertical indirect extrusion casting device for vacuum pump rotor and preparation method thereof |
| CN113492203A (en) * | 2021-06-08 | 2021-10-12 | 无锡市中源汽车零部件制造有限公司 | Production process of automobile aluminum die casting, application of production process and production system |
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| JPH10280077A (en) * | 1997-04-01 | 1998-10-20 | Furukawa Electric Co Ltd:The | Al alloy for high pressure casting, cast rotor using same, and production of cast rotor |
| CN1887480A (en) * | 2006-07-27 | 2007-01-03 | 上海交通大学 | Extrusion casting process for making automobile engine rack of magnesium alloy |
| CN1951605A (en) * | 2006-11-16 | 2007-04-25 | 上海交通大学 | Extrusion casting preparation method for aluminium alloy automobile engine bracket |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
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Patent Citations (5)
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| JPH10280077A (en) * | 1997-04-01 | 1998-10-20 | Furukawa Electric Co Ltd:The | Al alloy for high pressure casting, cast rotor using same, and production of cast rotor |
| CN1887480A (en) * | 2006-07-27 | 2007-01-03 | 上海交通大学 | Extrusion casting process for making automobile engine rack of magnesium alloy |
| CN1951605A (en) * | 2006-11-16 | 2007-04-25 | 上海交通大学 | Extrusion casting preparation method for aluminium alloy automobile engine bracket |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
| CN104841908A (en) * | 2015-05-20 | 2015-08-19 | 中北大学 | Compound extrusion casting method of aluminum alloy ring |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244870A (en) * | 2016-08-31 | 2016-12-21 | 宁波环亚机械制造有限公司 | A kind of production technology of automobile diecast parts |
| CN106493339A (en) * | 2016-11-06 | 2017-03-15 | 广州金邦液态模锻技术有限公司 | A kind of method for producing aluminium alloy spring base with Horizontal type extrusion casting machine |
| CN106493339B (en) * | 2016-11-06 | 2019-02-15 | 广州金邦液态模锻技术有限公司 | A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine |
| CN106424632A (en) * | 2016-11-29 | 2017-02-22 | 太仓市凯斯汀精密压铸有限公司 | Novel turbine disc squeeze casting forming technology |
| CN110788160A (en) * | 2019-11-07 | 2020-02-14 | 鑫鹏源智能装备集团有限公司 | Seamless steel tube production system and process |
| CN111334739A (en) * | 2019-12-30 | 2020-06-26 | 苏州三基铸造装备股份有限公司 | Surface strengthening method for extrusion casting cavity |
| CN112517884A (en) * | 2020-11-29 | 2021-03-19 | 苏州金瑞阳模具有限公司 | Extrusion casting method of aluminum alloy auxiliary frame |
| CN113000818A (en) * | 2021-02-23 | 2021-06-22 | 广州和德轻量化成型技术有限公司 | Vertical indirect extrusion casting device for vacuum pump rotor and preparation method thereof |
| CN113492203A (en) * | 2021-06-08 | 2021-10-12 | 无锡市中源汽车零部件制造有限公司 | Production process of automobile aluminum die casting, application of production process and production system |
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Application publication date: 20160316 |