CN102861903A - Connecting rod liquid-state die forging process - Google Patents
Connecting rod liquid-state die forging process Download PDFInfo
- Publication number
- CN102861903A CN102861903A CN2011101896836A CN201110189683A CN102861903A CN 102861903 A CN102861903 A CN 102861903A CN 2011101896836 A CN2011101896836 A CN 2011101896836A CN 201110189683 A CN201110189683 A CN 201110189683A CN 102861903 A CN102861903 A CN 102861903A
- Authority
- CN
- China
- Prior art keywords
- liquid
- die
- forging
- connecting rod
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention aims at the defects in the prior art and mainly provides a connecting rod liquid-state die forging process which is high in production efficiency, material-saving and low in cost. Products produced by means of the process are good in mechanical property. The connecting rod liquid-state die forging process comprises the following steps of (1) designing a die; (2) smelting aluminum alloy; and (3) in the liquid-state die forging process, installing the designed die on a hydraulic machine, debugging the die, spraying a lubricating agent towards a die cavity when the die is heated to be 100-150 DEG C, casting molten aluminum alloy into the die cavity when the die is heated to be 220-280 DEG C, wherein the temperature of the molten aluminum alloy in casting is 710-750 DEG C, the work pressure is maintained to be 16-20 Mpa and the dwell time is 5-10s after the molten aluminum alloy is poured into the die; and (4) performing follow-up treatment, namely taking out a liquid-state die forging piece, quickly placing the liquid-state die forging piece into a sand pile to be cooled, performing quenching and tempering to obtain a connecting rod.
Description
Technical field
The present invention relates to a kind of liquid forging process, refer in particular to a kind of connecting rod liquid contour forging technique.
Background technology
Existing connecting rod manufacture craft is generally selected steel, and adopts the hot forging moulding, and its general technological process is: at first select blank, then it is heated to uniform temperature after, again at the forcing press formed by die forging.The product poor mechanical property that said method is produced can't satisfy the properties of product requirement; And because its machining production process is complicated, can't simplify mould structure, cause long and inefficiency of production cycle, the metal material loss can be caused in burr and solid hole etc. in this kind process in addition, thereby so that its stock utilization is also lower.
The inventor proposes a kind of new connecting rod liquid forging process namely for the problems referred to above, has solved well the problems referred to above.
Summary of the invention
The present invention is directed to the disappearance of prior art existence, its main purpose provides a kind of production efficiency height, saves material and lower-cost connecting rod liquid forging process, and its product mechanical property of producing is also better.
For achieving the above object, the present invention adopts following technical scheme: the connecting rod liquid forging process, this technique comprises the steps:
(1) designing mould namely according to bar linkage structure, shape, size and performance requirement, carries out the liquid-state forging die design;
(2) aluminium alloy smelting is cleaned out aluminum alloy surface, puts in the crucible and heats, and adds aluminum alloy blank when crucible is heated to 500～760 ℃ and melts, and removes the scum silica frost of liquid level after dissolving;
(3) liquid forging process is installed in the above-mentioned mould that designs on the hydraulic press, and mould is debugged, and when mold heated to 100～150 ℃, sprays lubricant in mold cavity; When mold heated to 220～280 ℃, the aluminium alloy liquid after above-mentioned the dissolving is poured in the die cavity, the temperature the during cast of aluminium alloy liquid is 710～750 ℃; After aluminium alloy liquid poured into mould, operating pressure maintained 16～20Mpa, and the dwell time is 5～10S;
(4) postorder is processed, and takes out the forging part through liquid forging, puts in the sand drift rapidly and lowers the temperature, and through quenching and tempering, namely makes link member again.
After the present invention adopted technique scheme, its beneficial effect was:
(1) stock utilization is high, cost is low, compare with die forging, owing to do not have the metal material of burr and the loss of solid hole institute, so stock utilization can reach more than 95%.If compare with extrusion process, liquid forging process does not need to arrange the metal material (account for product 20%～30%) of the auxiliary consumption such as sprue bush, nozzle, running gate system;
(2) mechanical property is high, because the aluminium alloy of half curdled appearance is in the Under Pressure Solidification crystallization of abundance, dense structure, crystal grain are tiny, so the mechanical property of gained product is good, if adopt larger pressure (100～150 MPa), then at the plastic period successful, can approach or reach the level of forging part;
(3) production efficiency is high, and namely its yield rate height and quality are good, and during liquid forging, much lower during the casting of processing temperature ratio, it is little that product shrinks in mould, and be subjected to again the impact of three-dimensional compressive stress, so be difficult for forming the defectives such as pore and microporosity.The high efficiency that has simultaneously the precision castings precise forming, high-precision characteristics.
(4) equipment investment is few, and contour forging technique need to adopt the higher equipment of investment such as hotdie forging press or friction press.Compression casting needs special die casting machine, and equipment investment is also larger.Because in the liquid forging process, metal is to be shaped under flow regime, therefore, required forming pressure is little, and corresponding equipment tonnage is little; The metal forming of melting is easy, and the surface accuracy of institute's processing work is high, can reach less or without the requirement of machining, and can make the difficult complicated product that is shaped of traditional handicraft.
The specific embodiment
The present invention is described in detail below in conjunction with specific embodiment:
Embodiment 1: the connecting rod liquid forging process, this technique comprises the steps:
(1) designing mould namely according to bar linkage structure, shape, size and performance requirement, carries out the liquid-state forging die design;
(2) aluminium alloy smelting is cleaned out aluminum alloy surface, puts in the crucible and heats, and adds aluminum alloy blank when crucible is heated to 500～760 ℃ and melts, and removes the scum silica frost of liquid level after dissolving;
(3) liquid forging process is installed in the above-mentioned mould that designs on the hydraulic press, and mould is debugged, and when mold heated to 100～150 ℃, sprays lubricant in mold cavity; When mold heated to 280 ℃, the aluminium alloy liquid after above-mentioned the dissolving is poured in the die cavity, the temperature the during cast of aluminium alloy liquid is 710 ℃; After aluminium alloy liquid poured into mould, operating pressure maintained 16Mpa, and the dwell time is 10S;
(4) postorder is processed, and takes out the forging part through liquid forging, puts in the sand drift rapidly and lowers the temperature, and through quenching and tempering, namely makes link member again.
Embodiment 2: the connecting rod liquid forging process, this technique comprises the steps:
(1) designing mould namely according to bar linkage structure, shape, size and performance requirement, carries out the liquid-state forging die design;
(2) aluminium alloy smelting is cleaned out aluminum alloy surface, puts in the crucible and heats, and adds aluminum alloy blank when crucible is heated to 500～760 ℃ and melts, and removes the scum silica frost of liquid level after dissolving;
(3) liquid forging process is installed in the above-mentioned mould that designs on the hydraulic press, and mould is debugged, and when mold heated to 100～150 ℃, sprays lubricant in mold cavity; When mold heated to 220 ℃, the aluminium alloy liquid after above-mentioned the dissolving is poured in the die cavity, the temperature the during cast of aluminium alloy liquid is 750 ℃; After aluminium alloy liquid poured into mould, operating pressure maintained 20Mpa, and the dwell time is 5S;
(4) postorder is processed, and takes out the forging part through liquid forging, puts in the sand drift rapidly and lowers the temperature, and through quenching and tempering, namely makes link member again.
Embodiment 3: the connecting rod liquid forging process, this technique comprises the steps:
(1) designing mould namely according to bar linkage structure, shape, size and performance requirement, carries out the liquid-state forging die design;
(2) aluminium alloy smelting is cleaned out aluminum alloy surface, puts in the crucible and heats, and adds aluminum alloy blank when crucible is heated to 500～760 ℃ and melts, and removes the scum silica frost of liquid level after dissolving;
(3) liquid forging process is installed in the above-mentioned mould that designs on the hydraulic press, and mould is debugged, and when mold heated to 100～150 ℃, sprays lubricant in mold cavity; When mold heated to 250 ℃, the aluminium alloy liquid after above-mentioned the dissolving is poured in the die cavity, the temperature the during cast of aluminium alloy liquid is 730 ℃; After aluminium alloy liquid poured into mould, operating pressure maintained 18Mpa, and the dwell time is 8S;
(4) postorder is processed, and takes out the forging part through liquid forging, puts in the sand drift rapidly and lowers the temperature, and through quenching and tempering, namely makes link member again.
Of the present invention focusing on:
(1) stock utilization is high, cost is low, compare with die forging, owing to do not have the metal material of burr and the loss of solid hole institute, so stock utilization can reach more than 95%.If compare with extrusion process, liquid forging process does not need to arrange the metal material (account for product 20%～30%) of the auxiliary consumption such as sprue bush, nozzle, running gate system;
(2) mechanical property is high, because the aluminium alloy of half curdled appearance is in the Under Pressure Solidification crystallization of abundance, dense structure, crystal grain are tiny, so the mechanical property of gained product is good, if adopt larger pressure (100～150 MPa), then at the plastic period successful, can approach or reach the level of forging part;
(3) production efficiency is high, and namely its yield rate height and quality are good, and during liquid forging, much lower during the casting of processing temperature ratio, it is little that product shrinks in mould, and be subjected to again the impact of three-dimensional compressive stress, so be difficult for forming the defectives such as pore and microporosity.The high efficiency that has simultaneously the precision castings precise forming, high-precision characteristics;
(4) equipment investment is few, and contour forging technique need to adopt the higher equipment of investment such as hotdie forging press or friction press.Compression casting needs special die casting machine, and equipment investment is also larger.Because in the liquid forging process, metal is to be shaped under flow regime, therefore, required forming pressure is little, and corresponding equipment tonnage is little; The metal forming of melting is easy, and the surface accuracy of institute's processing work is high, can reach less or without the requirement of machining, and can make the difficult complicated product that is shaped of traditional handicraft.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment does.
Claims (1)
1. connecting rod liquid forging process, it is characterized in that: this technique comprises the steps:
(1) designing mould namely according to bar linkage structure, shape, size and performance requirement, carries out the liquid-state forging die design;
(2) aluminium alloy smelting is cleaned out aluminum alloy surface, puts in the crucible and heats, and adds aluminum alloy blank when crucible is heated to 500～760 ℃ and melts, and removes the scum silica frost of liquid level after dissolving;
(3) liquid forging process is installed in the above-mentioned mould that designs on the hydraulic press, and mould is debugged, and when mold heated to 100～150 ℃, sprays lubricant in mold cavity; When mold heated to 220～280 ℃, the aluminium alloy liquid after above-mentioned the dissolving is poured in the die cavity, the temperature the during cast of aluminium alloy liquid is 710～750 ℃; After aluminium alloy liquid poured into mould, operating pressure maintained 16～20Mpa, and the dwell time is 5～10S;
(4) postorder is processed, and takes out the forging part through liquid forging, puts in the sand drift rapidly and lowers the temperature, and through quenching and tempering, namely makes link member again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101896836A CN102861903A (en) | 2011-07-07 | 2011-07-07 | Connecting rod liquid-state die forging process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101896836A CN102861903A (en) | 2011-07-07 | 2011-07-07 | Connecting rod liquid-state die forging process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102861903A true CN102861903A (en) | 2013-01-09 |
Family
ID=47441179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101896836A Pending CN102861903A (en) | 2011-07-07 | 2011-07-07 | Connecting rod liquid-state die forging process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102861903A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949569A (en) * | 2014-05-23 | 2014-07-30 | 范承祥 | Preparation method of structure steel forging |
| CN104475698A (en) * | 2014-11-14 | 2015-04-01 | 北京交通大学 | Multi-point pressurizing type hydraulic die forging method |
| CN112172430A (en) * | 2020-10-20 | 2021-01-05 | 芜湖禾田汽车工业有限公司 | Cast aluminum alloy control arm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040028876A (en) * | 2004-02-05 | 2004-04-03 | 주식회사 성창에어텍 | Die casting apparatus and die casting method |
| WO2004108327A2 (en) * | 2002-12-25 | 2004-12-16 | Institut Problem Sverkhplastichnosti Metallov Ran | Production method by means of liquid forging and hot shaping |
| CN100369694C (en) * | 2004-11-15 | 2008-02-20 | 天津市天锻压力机有限公司 | Large-sized liquid-state die forging hydraulic press production line |
| CN100431777C (en) * | 2005-10-25 | 2008-11-12 | 哈尔滨理工大学 | Method for producing rocking-turn disk of motorcar air conditioner through technique of liquid forging |
-
2011
- 2011-07-07 CN CN2011101896836A patent/CN102861903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004108327A2 (en) * | 2002-12-25 | 2004-12-16 | Institut Problem Sverkhplastichnosti Metallov Ran | Production method by means of liquid forging and hot shaping |
| KR20040028876A (en) * | 2004-02-05 | 2004-04-03 | 주식회사 성창에어텍 | Die casting apparatus and die casting method |
| CN100369694C (en) * | 2004-11-15 | 2008-02-20 | 天津市天锻压力机有限公司 | Large-sized liquid-state die forging hydraulic press production line |
| CN100431777C (en) * | 2005-10-25 | 2008-11-12 | 哈尔滨理工大学 | Method for producing rocking-turn disk of motorcar air conditioner through technique of liquid forging |
Non-Patent Citations (3)
| Title |
|---|
| 《世界制造技术与装备市场》 20101031 吴玉荣 "液态模锻工艺在摩托车制造领域的应用" 第64-66页 1 , 第5期 * |
| 吴玉荣: ""液态模锻工艺在摩托车制造领域的应用"", 《世界制造技术与装备市场》 * |
| 罗守靖等: "《液态模锻与挤压铸造技术》", 31 March 2007, 北京：化学工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949569A (en) * | 2014-05-23 | 2014-07-30 | 范承祥 | Preparation method of structure steel forging |
| CN103949569B (en) * | 2014-05-23 | 2016-09-14 | 范承祥 | A kind of preparation method of structural steel forging |
| CN104475698A (en) * | 2014-11-14 | 2015-04-01 | 北京交通大学 | Multi-point pressurizing type hydraulic die forging method |
| CN104475698B (en) * | 2014-11-14 | 2016-08-24 | 北京交通大学 | A kind of liquid forging method of many areas exerted pressure on |
| CN112172430A (en) * | 2020-10-20 | 2021-01-05 | 芜湖禾田汽车工业有限公司 | Cast aluminum alloy control arm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100453206C (en) | Process of making oil cylinder body and cover with aluminium alloy | |
| CN204035526U (en) | Casting mould | |
| CN105964912A (en) | Crankshaft casting technology | |
| CN102962425A (en) | Preparation method of oblique oil cylinder body | |
| CN102847880B (en) | Special material co-casting cast production process | |
| CN102861903A (en) | Connecting rod liquid-state die forging process | |
| CN103240375B (en) | Forging processing method of brake wheel | |
| CN105081275A (en) | Method for preparing graded pressurization liquid forging aluminum alloy engine cylinder cover | |
| CN102274944A (en) | Process for forming aluminium-alloy casting motor flange plate | |
| CN104741577A (en) | Technology for producing aluminum copper alloy castings through metal-mould low pressure casting | |
| CN104911500B (en) | Manufacturing method of low-temperature wear-resistant carriage | |
| CN101269409A (en) | Method for producing sand mold cast iron member | |
| CN104741563A (en) | Centrifugal casting process of high-performance engine alloy cylinder sleeve | |
| CN103128268B (en) | For the method for low temperature shake out in large extra thick plate blank | |
| CN105665649A (en) | Casting technology for high-strength bearing connector | |
| CN101817073B (en) | Process for manufacturing cadmium plate and cadmium alloy plate | |
| CN101456058B (en) | Forming method of highway, railway basin type bearing metal structure piece | |
| CN102211176A (en) | Die casting process for high-performance zinc alloy vibrator shell | |
| CN110788297A (en) | Production method of high-strength aluminum alloy suspension clamp | |
| CN101069923A (en) | Process for producing hard-cold cast iron hydraulic machine piston | |
| CN103949581A (en) | Production method of automobile brake disc | |
| CN102773453A (en) | Process for casting spacecraft amplifier shell | |
| CN203459662U (en) | Casting die of special radiator for numerical control milling machine motor | |
| CN202779643U (en) | Steel-iron composite steel ingot mold | |
| CN103567252B (en) | The manufacture craft of heavy wall copper pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |