CN103878277A - Forging method of T-shaped shaft forging with ratio of length to diameter larger than 2.5 - Google Patents
Forging method of T-shaped shaft forging with ratio of length to diameter larger than 2.5 Download PDFInfo
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- CN103878277A CN103878277A CN201310093214.3A CN201310093214A CN103878277A CN 103878277 A CN103878277 A CN 103878277A CN 201310093214 A CN201310093214 A CN 201310093214A CN 103878277 A CN103878277 A CN 103878277A
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Abstract
The invention discloses a forging method of a T-shaped shaft forging with the ratio of length to diameter larger than 2.5 and relates to the technical field of forging of T-shaped shaft forgings, especially those with the diameter larger than 2.5. On the basis of an original forging method, the technical problem about uneven stress upon the head of a bar stock during forging a flange on the upper portion of the T-shaped shaft forging with the ratio of length and diameter larger than 2.5 is solved by taking technological measures that a cap sleeves the head, exposing out of a moulding bed, of the bar stock and a guide ring sleeves the lower portion of the cap before forging of the flange, abandonment caused by deflection even bending fold during deformation of the head of the bar stock is avoided, and consistency of the flanges in shape formed on the upper portion of the T-shaped shaft forging during forging and batch production efficiency of the forgings are improved; the forging method is simple and convenient to implement and satisfactory to promotion, and a novel selection mode is provided for production of the forgings.
Description
Technical field
The present invention relates to the technical field of forging of T oblique crank Z forging, particularly relate to the technical field of forging that length-to-diameter is greater than 2.5 T oblique crank Z forging.
Background technology
T oblique crank Z forging is made up of the ring flange on top and the cylinder body rod portion of bottom, and it is widely used in the manufacture of the parts such as turbine wheel shaft or piston rod; This type component is forged into after T oblique crank Z forging machined completing again by bar conventionally.Being forged into by bar in T oblique crank Z forging process, first the bar after heating is put into the loose tool that cylinder body rod portion diameter is identical, the degree of depth is identical with cylinder body rod minister degree of an internal diameter and T oblique crank Z forging bottom, carried out to being exposed to head outside loose tool that jumping-up forges to prepare; But because the method is directly carried out hammering to the head being exposed to outside loose tool, be difficult to guarantee that head is stressed evenly in order to realize homogeneous deformation, the crooked even bending fold being prone in leading edge deformation process causes scrapping, and the uniformity that is difficult to the ring flange shape that guarantees the T oblique crank Z forging top forming in each forging process, is unfavorable for the batch production of this forging.
Summary of the invention
Technical problem to be solved by this invention is: length-to-diameter is greater than in 2.5 the forging process of T oblique crank Z forging upper flange dish, the technical problem of head inhomogeneous deformation.
Technical scheme of the present invention is: be greater than in 2.5 the forging process of T oblique crank Z forging upper flange dish in order to solve length-to-diameter, the technical problem of head discontinuity, be greater than at original length-to-diameter on the basis of forging method of 2.5 T oblique crank Z forging, avoid the direct hammering of forging hammer to be exposed to the head outside loose tool, on the bar head being exposed to outside loose tool, be socketed a cap body; Described cap body is the cylinder that a height is 2～3 times of T oblique crank Z forging upper flange dish height, diameter is identical with ring flange diameter; The bottom circular central of described cylindrical cap body arranges the groove that a diameter is identical with the cylinder body rod portion diameter of T oblique crank Z forging bottom, the degree of depth of described groove is identical with the cylinder body rod portion radius of T oblique crank Z forging bottom, and described groove socket is exposed on the head outside loose tool; Irregular movement for fear of cap body after hammering, at a guide ring of cap body bottom socket, the height of guide ring is 2～2.5 times of T oblique crank Z forging upper flange dish height; Cap body and guide ring matched in clearance, guide ring socket is exposed to the bar head outside loose tool and is placed on loose tool.
Described cap body adopts Cr-Ni-Mo steel series die, preferably 5CrNiMo mould steel.
Described guide ring adopts Cr-Ni-Mo steel series die, preferably 5CrNiMo mould steel.
In order to guarantee axiality, described cap body and guide ring matched in clearance adopt basic hole system.
The invention has the beneficial effects as follows: on the basis of original forging method, by be socketed the technical measures of a cap body and a guide ring of cap body bottom socket on the bar head being exposed to outside loose tool, having solved length-to-diameter is greater than in 2.5 the forging process of T oblique crank Z forging upper flange dish, the technical problem of bar head inhomogeneous deformation, that has avoided that crooked even bending fold in bar leading edge deformation process causes scraps, the uniformity of ring flange shape and the batch production efficiency of this forging on the T oblique crank Z forging top forming in each forging process are improved, and solution of the present invention is simple and easy to do, be suitable for promoting, for the preparation of this forging provides a kind of new selection approach.
The specific embodiment
Below by specific embodiment, method of the present invention is described in detail.
Certain foreign trade product need provide the T oblique crank Z of being made up of 15-5PH material forging, and the ring flange on its T oblique crank Z forging top is the cylinder of a diameter 154mm, high 45mm, and T oblique crank Z forging lower cylindrical body rod portion is diameter 85mm, high 950mm.Select accordingly the bar of 15-5PH material, its diameter 85mm, length 1128mm; For this reason, a prefabricated internal diameter is the 5CrNiMo loose tool of 85mm, dark 950mm; The cap body of a prefabricated 5CrNiMo material, described cap body is the cylinder of diameter 154mm, high 140mm, its cylinder bottom centre arranges the groove of an internal diameter 85mm, dark 40mm; The 5CrNiMo guide ring of prefabricated height 130mm, an internal diameter 155mm; The position that then bar head need be out of shape was heated to 1130 ℃ of insulations after 40 minutes, and no the part of heating is not put into the loose tool with guide ring on loose tool, then in guide ring, the heating rod stub bar portion that is exposed to outside loose tool is inserted in the cap body that is preheated to 250 ℃; Again by forging hammer lower pressing cap body to being full of after guide ring madial wall, shed cap body and guide ring, forging stock top is planished and is made required T oblique crank Z forging.Avoided the appearance of the crooked even bending fold phenomenon in bar leading edge deformation process by above-mentioned forging method, improve the product quality of T oblique crank Z forging, and above-mentioned forging method is simple and easy to do, be suitable for promoting, for the preparation of such T oblique crank Z forging provides a kind of new selection approach.
Claims (8)
1. a length-to-diameter is greater than the forging method of 2.5 T oblique crank Z forging, first the bar after heating is put into the loose tool that cylinder body rod portion diameter is identical, the degree of depth is identical with cylinder body rod minister degree of an internal diameter and T oblique crank Z forging bottom, then carry out to being exposed to head outside loose tool that jumping-up forges to prepare, it is characterized in that: to being exposed to before head outside loose tool carries out jumping-up forging, on the bar head being exposed to outside loose tool, be socketed a cap body; At a guide ring of cap body bottom socket, cap body and guide ring matched in clearance, the bottom of guide ring is placed on loose tool.
2. length-to-diameter according to claim 1 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: the cylinder that described cap body is is highly 2～3 times of T oblique crank Z forging upper flange dish height, diameter is identical with ring flange diameter; The bottom circular central of described cylindrical cap body arranges the groove that a diameter is identical with the cylinder body rod portion diameter of T oblique crank Z forging bottom, the degree of depth of described groove is identical with the cylinder body rod portion radius of T oblique crank Z forging bottom, and described groove socket is exposed on the head outside loose tool.
3. length-to-diameter according to claim 1 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: the height of described guide ring is 2～2.5 times of T oblique crank Z forging upper flange dish height.
4. length-to-diameter according to claim 1 and 2 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: described cap body adopts Cr-Ni-Mo steel series die.
5. length-to-diameter according to claim 4 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: described cap body adopts 5CrNiMo mould steel.
6. the forging method that is greater than 2.5 T oblique crank Z forging according to the length-to-diameter described in claim 1 or 3, is characterized in that: described guide ring adopts Cr-Ni-Mo steel series die.
7. length-to-diameter according to claim 6 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: described guide ring adopts 5CrNiMo mould steel.
8. length-to-diameter according to claim 1 is greater than the forging method of 2.5 T oblique crank Z forging, it is characterized in that: described cap body and guide ring matched in clearance adopt basic hole system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093214.3A CN103878277A (en) | 2012-12-21 | 2013-03-21 | Forging method of T-shaped shaft forging with ratio of length to diameter larger than 2.5 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563416 | 2012-12-21 | ||
| CN201210563416.5 | 2012-12-21 | ||
| CN201310093214.3A CN103878277A (en) | 2012-12-21 | 2013-03-21 | Forging method of T-shaped shaft forging with ratio of length to diameter larger than 2.5 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103878277A true CN103878277A (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310093214.3A Pending CN103878277A (en) | 2012-12-21 | 2013-03-21 | Forging method of T-shaped shaft forging with ratio of length to diameter larger than 2.5 |
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| CN (1) | CN103878277A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493281A (en) * | 2016-12-12 | 2017-03-15 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of the hollow Y profile shafts forging of titanium alloy |
| CN106607534A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Upsetting method of cylindrical ingot blank or bar with large height to diameter ratio |
| CN108160905A (en) * | 2017-12-25 | 2018-06-15 | 株洲中车天力锻业有限公司 | A kind of locomotive shaft forging molding process |
| CN110814248A (en) * | 2019-10-10 | 2020-02-21 | 中国第一汽车股份有限公司 | Flash-free hot die forging forming process for front shell forging of automobile differential |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182944A (en) * | 1984-09-28 | 1986-04-26 | Musashi Seimitsu Kogyo Kk | Production of shaft component with large-sized flange |
| JP2001025844A (en) * | 1999-07-12 | 2001-01-30 | Kobe Steel Ltd | Die forging method of shaft-like forged product having plural flanges |
| KR20070025212A (en) * | 2005-09-01 | 2007-03-08 | 현대중공업 주식회사 | Die tools for closed die forging of thrust shaft |
| CN101722270A (en) * | 2008-10-12 | 2010-06-09 | 通裕重工股份有限公司 | Wind driven generator principal shaft molding technique |
| CN202316884U (en) * | 2011-11-16 | 2012-07-11 | 天津重型装备工程研究有限公司 | Forging mould for manufacturing flange shaft forge piece of semi built-up crank shaft |
| CN202779455U (en) * | 2012-09-12 | 2013-03-13 | 襄阳金锤锻造有限公司 | Flange structure molding die |
-
2013
- 2013-03-21 CN CN201310093214.3A patent/CN103878277A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6182944A (en) * | 1984-09-28 | 1986-04-26 | Musashi Seimitsu Kogyo Kk | Production of shaft component with large-sized flange |
| JP2001025844A (en) * | 1999-07-12 | 2001-01-30 | Kobe Steel Ltd | Die forging method of shaft-like forged product having plural flanges |
| KR20070025212A (en) * | 2005-09-01 | 2007-03-08 | 현대중공업 주식회사 | Die tools for closed die forging of thrust shaft |
| CN101722270A (en) * | 2008-10-12 | 2010-06-09 | 通裕重工股份有限公司 | Wind driven generator principal shaft molding technique |
| CN202316884U (en) * | 2011-11-16 | 2012-07-11 | 天津重型装备工程研究有限公司 | Forging mould for manufacturing flange shaft forge piece of semi built-up crank shaft |
| CN202779455U (en) * | 2012-09-12 | 2013-03-13 | 襄阳金锤锻造有限公司 | Flange structure molding die |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106607534A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Upsetting method of cylindrical ingot blank or bar with large height to diameter ratio |
| CN106493281A (en) * | 2016-12-12 | 2017-03-15 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of the hollow Y profile shafts forging of titanium alloy |
| CN108160905A (en) * | 2017-12-25 | 2018-06-15 | 株洲中车天力锻业有限公司 | A kind of locomotive shaft forging molding process |
| CN110814248A (en) * | 2019-10-10 | 2020-02-21 | 中国第一汽车股份有限公司 | Flash-free hot die forging forming process for front shell forging of automobile differential |
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Application publication date: 20140625 |