CN100491004C - Precision forging process for radial and reverse combined extrusion - Google Patents
Precision forging process for radial and reverse combined extrusion Download PDFInfo
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- CN100491004C CN100491004C CNB2006100382779A CN200610038277A CN100491004C CN 100491004 C CN100491004 C CN 100491004C CN B2006100382779 A CNB2006100382779 A CN B2006100382779A CN 200610038277 A CN200610038277 A CN 200610038277A CN 100491004 C CN100491004 C CN 100491004C
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- 238000001125 extrusion Methods 0.000 title claims abstract description 22
- 238000005242 forging Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 5
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 3
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000002791 soaking Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 210000002435 tendon Anatomy 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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Abstract
The invention provides a precise forging process for radial and reverse combined extrusion, and relates to a metal precise forging process. It comprises the following steps: the method comprises the steps of firstly, blank making, secondly, coating, namely, soaking the blank in an antioxidant solution and then drying the soaked blank, thirdly, heating, namely, heating the coated blank to the temperature of 750 plus materials and 800 ℃, thirdly, extruding the coated blank in a radial and reverse combined mode, wherein a groove is formed in the inner wall of a normal reverse extrusion female die according to the shape of a finished product, the size of the groove is 15-25% larger than that of the finished product, when the material is extruded, the material flows in the reverse direction and the groove opening direction of a punch, a back pressure device is additionally arranged at a position where the material flows fast, the device is sleeved on a reverse extrusion punch, the reverse extrusion flowing speed is controlled by adopting an elastic element such as a spring or polyurethane rubber, and the like, and finally. The invention completes radial extrusion and reverse extrusion simultaneously in one extrusion process, thereby reducing working procedures, lowering cost, improving production efficiency and product strength.
Description
Technical field
The present invention relates to the metal precision forging technology, particularly relate to a kind of metal forming technology.
Background technology
Existing metal forming technology, oppositely extruding and radial compression are carried out respectively, and operation is many, the production cost height, benefit is low.And machining shape is a tubular or cup-shaped, and has on the cylindrical when being the symmetry or the product of asymmetrically distributed convex tendon, carries out respectively even will oppositely push with radial compression, also is difficult to obtain qualified products.This be because: if first oppositely extruding back radial compression, the blank deformation amount is big, and extruding force is poly-to be increased; If oppositely extruding after the first radial compression because the reverse extrusion speed of convex tendon part is slower than the reverse extrusion speed in sleeve part, convex tendon can occurs and tear.Therefore the domestic machining mode that adopts is usually at present processed this type of part, and the intensity of machined part is far below the precision forging part; Developed country adopts the mode of powder compacting to process this type of part usually, and this mode production difficulty is higher.
Summary of the invention
The object of the present invention is to provide the above-mentioned technical barrier of a kind of solution, in an extrusion process, finish simultaneously radially with reverse shaping radially with the precision forging technology of reverse Compound Extrusion.
Technical solution of the present invention is: radially with the precision forging technology of reverse Compound Extrusion, it is characterized in that may further comprise the steps: 1. base, 2. coating--dry up after blank soaked in antioxidant solution, 3. heating--the blank heating after the coating is arrived 750-800 ℃, 4. radially with reverse Compound Extrusion--on normal back extrusion concave inwall, leaving groove by the finished product shape, groove size is than the big 15-25% of final finished, material is when being squeezed, to oppositely flowing of drift with the fluting direction, at the place increase back pressure apparatus that material flows fast, this device is enclosed within anti-squeezing on the drift, adopt the anti-flowing velocity of squeezing of flexible member controls such as spring or polyurethane rubber, 5. ball blast, 6. phospholeumization, 7. finishing.
The present invention is leaving groove by the finished product shape on normal back extrusion concave inwall, make material counter pushing through in the journey not only to reverse flow but also to radially flowing once.And will once counter push through to realize in the journey material oppositely and Radial Flow, just require the mobile fairly good of material, so blank heats the flowability of increase material before extruding; In order to prevent material oxidation in heating process, before heating, increased the coating operation.And heating and temperature control has been guaranteed material oxidation seldom at 750～800 ℃, the good fluidity of material, and extruding force is little, and die life is long.When extruding, workpiece instead squeezes flowing velocity greater than Radial Flow speed, there be not the convex tendon place mobile the fastest especially, therefore the present invention adopts in the mobile fast place of material increases back pressure apparatus, this device is enclosed within anti-squeezing on the drift, adopt the anti-flowing velocity of squeezing of flexible member controls such as spring or polyurethane rubber, thereby obtain full convex tendon and smooth end face.Therefore the present invention has reduced operation owing in extrusion process, finished radial compression and oppositely extruding simultaneously, has reduced cost, has improved production efficiency.And the product of producing by the present invention, owing to only need an a small amount of finishing, so the intensity of product improves greatly than machinofacture.
Description of drawings
Accompanying drawing pushes schematic diagram for the present invention.
Among Fig. 1: 1, die, 2, blank, 3, back pressure apparatus, 4, instead squeeze drift, 5, flexible member.
The specific embodiment
(1) base--the oxide skin and the fine fisssure whim on raw material surface are gone.
(2) coating--after 150 ~ 200 ℃ of blank heating, be immersed in the anti-oxidation solvent, dry up after soaking.
(3) heating--blank is put into intermediate frequency furnace be heated to 750-800 ℃.
(4) radially with reverse Compound Extrusion--on normal back extrusion concave inwall, leaving groove by the finished product shape, groove size is bigger by 20% than final finished, material is when being squeezed, to oppositely flowing of drift with the fluting direction, at the place increase back pressure apparatus that material flows fast, this device is enclosed within anti-squeezing on the drift, adopts the anti-flowing velocity of squeezing of flexible member controls such as spring or polyurethane rubber, makes preformed blank.
(5) after blank process ball blast and the phospholeumization, enter the finishing die cavity again and carry out finishing, make desired product.
Claims (1)
1, radially with the precision forging technology of reverse Compound Extrusion, by base, coating, heating, radially with reverse Compound Extrusion, ball blast, phospholeumization and finishing step are formed, it is characterized in that described coating step is to dry up after blank is soaked in antioxidant solution, described heating steps is to 700-800 ℃ with the blank heating after the coating, described is to leave groove by the finished product shape on normal back extrusion concave inwall with reverse co-extrusion step radially, groove size is than the big 15-25% of final finished, material is when being squeezed, opposite direction and fluting direction to drift flow, at the place increase back pressure apparatus that material flows fast, this device is enclosed within anti-squeezing on the drift, adopts the anti-flowing velocity of squeezing of spring or polyurethane rubber flexible member control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100382779A CN100491004C (en) | 2006-02-14 | 2006-02-14 | Precision forging process for radial and reverse combined extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100382779A CN100491004C (en) | 2006-02-14 | 2006-02-14 | Precision forging process for radial and reverse combined extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101020200A CN101020200A (en) | 2007-08-22 |
| CN100491004C true CN100491004C (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100382779A Active CN100491004C (en) | 2006-02-14 | 2006-02-14 | Precision forging process for radial and reverse combined extrusion |
Country Status (1)
| Country | Link |
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| CN (1) | CN100491004C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029300B (en) * | 2010-11-07 | 2012-11-07 | 上海交通大学 | Back-pressure four-way reciprocating heading device and processing method thereof |
| CN103586299A (en) * | 2013-11-27 | 2014-02-19 | 山东建筑大学 | High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator |
| CN104526277B (en) * | 2014-12-05 | 2016-09-21 | 江苏威鹰机械有限公司 | New-energy automobile electric-control system has the terminals manufacturing process of large scale contact plane |
| CN104466605B (en) * | 2014-12-05 | 2016-08-24 | 江苏威鹰机械有限公司 | New-energy automobile electric-control system terminals manufacturing process |
| CN105414233B (en) * | 2015-03-10 | 2018-02-06 | 东北大学 | A kind of processing technology with back pressure indirect-extrusion mould and using the mould |
| CN104971957A (en) * | 2015-07-15 | 2015-10-14 | 上海交通大学 | Extrusion moulding method of pure platinum cupped utensil |
| CN105327962B (en) * | 2015-10-19 | 2017-11-14 | 江苏森威集团飞达股份有限公司 | A kind of mould for controlling cup shell backward extrusion bottom shape |
| CN106623751B (en) * | 2017-01-24 | 2019-07-12 | 江苏森威集团飞达股份有限公司 | A kind of EPB clamp forging method, forging equipment |
| CN108927416B (en) * | 2018-07-09 | 2019-07-23 | 中国兵器工业第五九研究所 | A kind of open inner mold backward and forward extrusion combined shaping method |
| CN110695111B (en) * | 2019-11-26 | 2021-01-01 | 中北大学 | Radial-reverse combined extrusion forming die for thin-walled cylindrical part with outer boss |
| CN110695112B (en) * | 2019-11-26 | 2020-10-02 | 中北大学 | Radial-reverse combined extrusion forming method for thin-walled cylindrical part with outer boss |
| CN113059011B (en) * | 2021-03-17 | 2022-05-31 | 中北大学 | Extrusion and stretching composite forming equipment for forming large conical cylinder |
| CN113458397B (en) * | 2021-06-30 | 2022-10-28 | 燕山大学 | Metal powder sintering and in-situ extrusion integrated equipment and sintering and extrusion composite process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271240A (en) * | 1977-12-27 | 1981-06-02 | Braun Engineering Company | Lobed preparatory blank for cold extruding a cup-shaped article with hollow polygonal interior |
| CN1528940A (en) * | 2003-09-26 | 2004-09-15 | 上海交通大学 | Micron fine-grained titanium-nickel alloy block material isodiametric corner extrusion preparing method |
| CN1544181A (en) * | 2003-11-13 | 2004-11-10 | 夏汉关 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
| CN1598346A (en) * | 2004-09-06 | 2005-03-23 | 贵州大学 | Method of manufacturing star gear for overdrive clutch |
| WO2005051566A1 (en) * | 2003-11-27 | 2005-06-09 | Honda Motor Co., Ltd. | Method of manufacturing outer ring member for constant velocity joint |
| CN1628921A (en) * | 2003-12-26 | 2005-06-22 | 李克敏 | All fiber forging process for load-carrying vehicle hub axle and die therefor |
-
2006
- 2006-02-14 CN CNB2006100382779A patent/CN100491004C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271240A (en) * | 1977-12-27 | 1981-06-02 | Braun Engineering Company | Lobed preparatory blank for cold extruding a cup-shaped article with hollow polygonal interior |
| CN1528940A (en) * | 2003-09-26 | 2004-09-15 | 上海交通大学 | Micron fine-grained titanium-nickel alloy block material isodiametric corner extrusion preparing method |
| CN1544181A (en) * | 2003-11-13 | 2004-11-10 | 夏汉关 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
| WO2005051566A1 (en) * | 2003-11-27 | 2005-06-09 | Honda Motor Co., Ltd. | Method of manufacturing outer ring member for constant velocity joint |
| CN1628921A (en) * | 2003-12-26 | 2005-06-22 | 李克敏 | All fiber forging process for load-carrying vehicle hub axle and die therefor |
| CN1598346A (en) * | 2004-09-06 | 2005-03-23 | 贵州大学 | Method of manufacturing star gear for overdrive clutch |
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| Title |
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| 冲击电锤离合件温挤压成形. 徐新成.热加工工艺，第2期. 1997 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101020200A (en) | 2007-08-22 |
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Owner name: JIANGSU SUNWAY PRECISION FORGING CO., LTD. Free format text: FORMER OWNER: SENWEI GROUP CO., LTD., JIANGSU Effective date: 20131106 |
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Address after: No. 299 Nanxiang West Road, Economic Development Zone, Dafeng District, Yancheng City, Jiangsu Province, 224100 Patentee after: Qianchao Senwei Co.,Ltd. Country or region after: China Address before: No. 299 Nanxiang West Road, Dafeng Economic Development Zone, Jiangsu Province, 224100 Patentee before: JIANGSU SUNWAY PRECISION FORGING Co.,Ltd. Country or region before: China |
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