CN103878279A - Method for forging crossed die forgings - Google Patents
Method for forging crossed die forgings Download PDFInfo
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- CN103878279A CN103878279A CN201310093212.4A CN201310093212A CN103878279A CN 103878279 A CN103878279 A CN 103878279A CN 201310093212 A CN201310093212 A CN 201310093212A CN 103878279 A CN103878279 A CN 103878279A
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Abstract
The invention relates to the technical field of forging of crossed die forgings, in particular to a method for forging the crossed die forgings. The method includes prefabricating an upper forming die and a lower forming die which are provided with deep grooves; heating a rod or a plate of a raw material, and forging the head portion or the upper portion and the tail portion and the lower portion to be the upper portion and the lower portion of a crossed forging to be forged respectively; heating a forged forging blank, placing the lower portion and the upper portion of the forging blank into the deep grooves of the upper forming die and the lower forming die after being preheated for forming die forging, taking the forging blank out of the forming dies after forging by a certain degree, rotating for 90 degrees by taking a transverse I-shaped line of the crossed forging blank as an axis for horizontal forging, forging a left rod portion and a right rod portion of the crossed forging blank respectively, and acquiring a needed crossed forging through shaping forging. By the method, lowering of mechanical performance and shortening of fatigue life of manufactured crossed forgings due to a discontinuous streamline in the forging process of the crossed forgings are avoided, and quality of the crossed forgings is improved.
Description
Technical field
The present invention relates to the technical field of forging of cross-shaped forging piece.
Background technology
Conventionally cross-shaped forging piece is by being forged into square forging stock after bar or sheet material heating, then cut four angles of square forging stock, the position not switched on being cut four of the upper and lower, left and right face of square forging stock of four jiaos respectively after heating again starts to carry out extremely four of the upper and lower, left and right bar portion shape of the cross-shaped forging piece of required forging of forging pulling, is forged into required cross-shaped forging piece finally by mistake shaping; But said method, due to the excision at four angles of square forging stock, makes forging streamline discontinuous, cause the mechanical property of made cross-shaped forging piece to reduce, shorten fatigue life.
Summary of the invention
Technical problem to be solved by this invention is: avoid the mechanical property of discontinuous the caused made cross-shaped forging piece of streamline in cross-shaped forging piece forging process to reduce, shorten fatigue life.
Technical scheme of the present invention is: reduce and shorten fatigue life for fear of the mechanical property of discontinuous the caused made cross-shaped forging piece of streamline in cross-shaped forging piece forging process, the special forging method that proposes a kind of cross forging part: a first prefabricated upper fetal membrane and a lower fetal membrane, the lower surface of described upper fetal membrane is a plane, arrange at the center of plane one with cross-shaped forging piece upper stem height and the corresponding deep trouth of profile of required forging, the upper surface of described lower fetal membrane is a plane, arrange at the center of plane one with the shaft-like height in cross-shaped forging piece bottom and the corresponding deep trouth of profile of required forging, by above-mentioned upper fetal membrane and lower fetal membrane preheating, then by after the heating of raw-material bar or sheet material, raw material head or top are forged into the top of the cross-shaped forging piece that needs forging, raw material afterbody or bottom are forged into the bottom of the cross-shaped forging piece that needs forging, again further by after the forging stock heating of above-mentioned forging, the lower fetal membrane after preheating is put into in its underpart, its top is put into and carried out swage forging after the fetal membrane of appearing on the stage after preheating and make, after forging to a certain degree, in fetal membrane, take out, and after axle half-twist, put down forging taking a horizontal word line of cross forging stock, until left and right two parts of a horizontal word line part of cross forging stock are can forge respectively time, respectively above-mentioned left and right two parts are forged into respectively two of the left and right bar portion shape of the cross-shaped forging piece of required forging, be forged into required cross-shaped forging piece finally by crossing shaping.
Described upper fetal membrane and lower fetal membrane can adopt mould steel, preferentially select Cr-Ni-Mo steel series die, preferably 5CrNiMo mould steel.
Described upper fetal membrane and the preheat temperature of lower fetal membrane are 200 DEG C～250 DEG C.
The invention has the beneficial effects as follows: by prefabricated upper fetal membrane and lower fetal membrane, the lower surface of described upper fetal membrane is plane, its center arranges cross-shaped forging piece upper stem height and the corresponding deep trouth of profile with required forging; The upper surface of described lower fetal membrane is plane, and its center arranges the shaft-like height in cross-shaped forging piece bottom and the corresponding deep trouth of profile with required forging; By after the heating of raw-material bar or sheet material, its head or top and afterbody or bottom are forged into respectively to top and the bottom of the cross-shaped forging piece that needs forging; Again further by after the forging stock heating of above-mentioned forging, lower fetal membrane and upper fetal membrane that its underpart and top are put into respectively after preheating carry out fetal membrane forging, after forging to a certain degree, in fetal membrane, take out, and after axle half-twist, put down forging taking a horizontal word line of cross forging stock, distinguish again two of the left and right bar portion of forging cross forging stock, forged required cross-shaped forging piece finally by crossing shaping; Above-mentioned forging method has been avoided mechanical property reduction and the shortening of fatigue life of discontinuous the caused made cross-shaped forging piece of streamline in cross-shaped forging piece forging process, has improved the product quality of cross-shaped forging piece.
Detailed description of the invention
Below by specific embodiment, method of the present invention is described in detail.
Certain part of the aircraft engine nacelle of aerospace company of France design has adopted Ti-6Al-4V titanium alloy material, and the processing request of this part provides a criss-cross forging, adopt accordingly the forging method of cross forging part of the present invention: first by the prefabricated upper fetal membrane of 5CrNiMo mould steel and a lower fetal membrane, the lower surface of described upper fetal membrane is a plane, arrange at the center of plane one with cross-shaped forging piece upper stem height and the corresponding deep trouth of profile of required forging, the upper surface of described lower fetal membrane is a plane, arrange at the center of plane one with the shaft-like height in cross-shaped forging piece bottom and the corresponding deep trouth of profile of required forging, above-mentioned upper fetal membrane and lower fetal membrane are preheated to 250 DEG C, then the Ti-6Al-4V titanium alloy rod bar of diameter 180mm, long 430mm is heated to after 965 DEG C ± 10 DEG C, bar head is forged into the top of the cross-shaped forging piece that needs forging, bar afterbody is forged into the bottom of the cross-shaped forging piece that needs forging, further the forging stock of above-mentioned forging is heated to again after 965 DEG C ± 10 DEG C, the lower fetal membrane after preheating is put into in its underpart, its top is put into and carried out swage forging after the fetal membrane of appearing on the stage after preheating and make, after forging to a certain degree, in fetal membrane, take out, and after axle half-twist, put down forging taking a horizontal word line of cross forging stock, until left and right two parts of a horizontal word line part of cross forging stock are can forge respectively time, respectively above-mentioned left and right two parts are forged into respectively two of the left and right bar portion shape of the cross-shaped forging piece of required forging, be forged into required Ti-6Al-4V titanium alloy cross-shaped forging piece finally by crossing shaping.The Ti-6Al-4V titanium alloy cross-shaped forging piece that adopts forging method of the present invention to prepare, has met French aerospace company and the streamline of Ti-6Al-4V titanium alloy cross-shaped forging piece has been required and reached its mechanical property to above-mentioned forging and the requirement of fatigue life.
Claims (5)
1. the forging method of a cross forging part, it is characterized in that: a first prefabricated upper fetal membrane and a lower fetal membrane, the lower surface of described upper fetal membrane is a plane, arrange at the center of plane one with cross-shaped forging piece upper stem height and the corresponding deep trouth of profile of required forging, the upper surface of described lower fetal membrane is a plane, arrange at the center of plane one with the shaft-like height in cross-shaped forging piece bottom and the corresponding deep trouth of profile of required forging, by above-mentioned upper fetal membrane and lower fetal membrane preheating, then by after the heating of raw-material bar or sheet material, raw material head or top are forged into the top of the cross-shaped forging piece that needs forging, raw material afterbody or bottom are forged into the bottom of the cross-shaped forging piece that needs forging, again further by after the forging stock heating of above-mentioned forging, the lower fetal membrane after preheating is put into in its underpart, its top is put into and carried out swage forging after the fetal membrane of appearing on the stage after preheating and make, after forging to a certain degree, in fetal membrane, take out, and after axle half-twist, put down forging taking a horizontal word line of cross forging stock, until left and right two parts of a horizontal word line part of cross forging stock are can forge respectively time, respectively above-mentioned left and right two parts are forged into respectively two of the left and right bar portion shape of the cross-shaped forging piece of required forging, be forged into required cross-shaped forging piece finally by crossing shaping.
2. the forging method of cross forging part according to claim 1, is characterized in that: described upper fetal membrane and lower fetal membrane adopt mould steel.
3. the forging method of cross forging part according to claim 1 and 2, is characterized in that: described upper fetal membrane and lower fetal membrane adopt Cr-Ni-Mo steel series die.
4. the forging method of cross forging part according to claim 3, is characterized in that: described upper fetal membrane and lower fetal membrane adopt 5CrNiMo mould steel.
5. the forging method of cross forging part according to claim 1, is characterized in that: described upper fetal membrane and the preheat temperature of lower fetal membrane are 200 DEG C～250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093212.4A CN103878279A (en) | 2012-12-21 | 2013-03-21 | Method for forging crossed die forgings |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563389.1 | 2012-12-21 | ||
| CN201210563389 | 2012-12-21 | ||
| CN201310093212.4A CN103878279A (en) | 2012-12-21 | 2013-03-21 | Method for forging crossed die forgings |
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| CN103878279A true CN103878279A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310093212.4A Pending CN103878279A (en) | 2012-12-21 | 2013-03-21 | Method for forging crossed die forgings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308068A (en) * | 2014-08-29 | 2015-01-28 | 孙金福 | Cross-shaped forged piece |
| CN104438997A (en) * | 2014-11-06 | 2015-03-25 | 通裕重工股份有限公司 | Free forging process for large cross forged pieces |
| CN106541070A (en) * | 2016-10-09 | 2017-03-29 | 中冶陕压重工设备有限公司 | A kind of forging method of machine shaft |
| CN107282853A (en) * | 2017-06-30 | 2017-10-24 | 陕西宏远航空锻造有限责任公司 | A kind of forging part improves the forging method of blank shaping |
Citations (6)
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|---|---|---|---|---|
| US4274276A (en) * | 1978-07-31 | 1981-06-23 | Etablissement Supervis | Method and apparatus for producing a workpiece by extrusion molding |
| US4367643A (en) * | 1980-12-16 | 1983-01-11 | The Gleason Works | Method and apparatus for cold forming metal articles having irregular cross-section |
| US4580432A (en) * | 1982-10-07 | 1986-04-08 | C.L.B. Enterprises, Inc. | Method of making a metal cruciform journal forging |
| DE19903684B4 (en) * | 1999-02-01 | 2005-04-21 | Forschungsgesellschaft Umformtechnik Mbh | Tool for cross extrusion |
| CN101972829A (en) * | 2010-10-25 | 2011-02-16 | 谢振杨 | Semi-closed forging device for universal joint and forging method thereof |
| CN102284673A (en) * | 2011-05-15 | 2011-12-21 | 张家港海锅重型锻件有限公司 | Manufacturing method of cross-shaped forging piece |
-
2013
- 2013-03-21 CN CN201310093212.4A patent/CN103878279A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274276A (en) * | 1978-07-31 | 1981-06-23 | Etablissement Supervis | Method and apparatus for producing a workpiece by extrusion molding |
| US4367643A (en) * | 1980-12-16 | 1983-01-11 | The Gleason Works | Method and apparatus for cold forming metal articles having irregular cross-section |
| US4580432A (en) * | 1982-10-07 | 1986-04-08 | C.L.B. Enterprises, Inc. | Method of making a metal cruciform journal forging |
| DE19903684B4 (en) * | 1999-02-01 | 2005-04-21 | Forschungsgesellschaft Umformtechnik Mbh | Tool for cross extrusion |
| CN101972829A (en) * | 2010-10-25 | 2011-02-16 | 谢振杨 | Semi-closed forging device for universal joint and forging method thereof |
| CN102284673A (en) * | 2011-05-15 | 2011-12-21 | 张家港海锅重型锻件有限公司 | Manufacturing method of cross-shaped forging piece |
Non-Patent Citations (1)
| Title |
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| 刘日仓等: "大型十字轴锻造工艺", 《锻压机械》, no. 5, 31 October 2001 (2001-10-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308068A (en) * | 2014-08-29 | 2015-01-28 | 孙金福 | Cross-shaped forged piece |
| CN104438997A (en) * | 2014-11-06 | 2015-03-25 | 通裕重工股份有限公司 | Free forging process for large cross forged pieces |
| CN104438997B (en) * | 2014-11-06 | 2017-02-15 | 通裕重工股份有限公司 | Free forging process for large cross forged pieces |
| CN106541070A (en) * | 2016-10-09 | 2017-03-29 | 中冶陕压重工设备有限公司 | A kind of forging method of machine shaft |
| CN107282853A (en) * | 2017-06-30 | 2017-10-24 | 陕西宏远航空锻造有限责任公司 | A kind of forging part improves the forging method of blank shaping |
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Application publication date: 20140625 |