CN112589028B - Eccentric forging forming die structure - Google Patents
Eccentric forging forming die structure Download PDFInfo
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- CN112589028B CN112589028B CN202011381504.4A CN202011381504A CN112589028B CN 112589028 B CN112589028 B CN 112589028B CN 202011381504 A CN202011381504 A CN 202011381504A CN 112589028 B CN112589028 B CN 112589028B
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- Prior art keywords
- hole
- blank
- eccentric
- inclined hole
- eccentric forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
Abstract
The invention discloses a forming die structure of an eccentric forging piece, which comprises: the die block is provided with an inclined hole for deformation forming of the eccentric forging, the die block is placed on a hydraulic forging press, after the blank is heated, the blank is aligned with the inclined hole in the die block to be formed in a one-step forging mode, then the blank is formed in a water cooling mode, the problem that machining forming production efficiency is low when 316H austenite is a regular round rod or rectangular forging is solved, and production efficiency is improved.
Description
Technical Field
The invention relates to an eccentric forging piece forming die structure, and belongs to the technical field of forging piece forming dies.
Background
For an eccentric forging made of 316H austenitic stainless steel, the structure of the eccentric forging is shown in figures 1 to 2, and the current machining process for the eccentric forging is as follows: a round bar or a rectangular forged piece with a regular 316H austenite is taken and formed through machining, and during machining, the machining needs to be subjected to steps of multi-step transposition clamping, post-heat treatment for correcting mechanical properties and the like, so that the production efficiency is low and the production requirement cannot be met.
Disclosure of Invention
In order to solve the technical problem, the invention provides a forming die structure of an eccentric forging.
The invention is realized by the following technical scheme.
The invention provides an eccentric forging piece forming die structure, which comprises: and the die block is provided with an inclined hole for deformation forming of the eccentric forging.
The invention has the beneficial effects that: the die block is placed on a hydraulic forging press, after the blank is heated, the blank is aligned to the inclined hole in the die block to be formed in a one-step forging mode, then the blank is formed in a water cooling mode, the problem that machining forming production efficiency is low when 316H austenite is a regular round rod or rectangular forge piece is solved, and production efficiency is improved.
Drawings
FIG. 1 is a front view of an eccentric forging;
FIG. 2 is a top view of the eccentric forging of FIG. 1;
FIG. 3 is a sectional view of the die block and eccentric forging of the present invention in a formed state;
FIG. 4 is a graph showing the stress analysis of the eccentric forging in the mold block;
in the figure: 1-a mould block; 11-inclined holes; 12-heat conduction holes; 2-small end of blank; 3-large end of blank.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
See fig. 3-4.
The invention discloses a forming die structure of an eccentric forging, which comprises: the die block 1 is provided with an inclined hole 11 for deformation forming of the eccentric forging piece on the die block 1.
The die block 1 is placed on a hydraulic forging press, after the blank is heated, the blank is aligned to the inclined hole 11 in the die block 1 to be formed in a one-step forging mode, then the blank is formed in a water cooling mode, the problem that machining forming production efficiency is low when 316H austenite is a regular round rod or rectangular forge piece is solved, and production efficiency is improved.
The bottom of the inclined hole 11 is a sealed closed hole, and the temperature of the bottom of the eccentric forging which is deformed firstly heats and expands the die block 1 in the closed hole, so that the deformation rate of the eccentric forging in the inclined hole 11 is accelerated.
Establish on the top mould piece 1 body of inclined hole 11 and use heat conduction hole 12, heat conduction hole 12 diameter is greater than the blank of inclined hole 11 and eccentric forging, and the blank takes place to warp in heat conduction hole 12 and the contact department of inclined hole 11, and the heat that warp and blank itself gived off can not directly give off the air to the four directions along heat conduction hole 12 in, but keeps warm to the blank that does not warp along heat conduction hole 12, avoids the blank heat dissipation of non-deformation and cools off too fast.
The central point of the top of the inclined hole 11 is superposed with the central point of the heat conduction hole 12, so that the shape and the size of the part of the eccentric forging after the blank is deformed and formed are ensured.
The top edge of the heat conduction hole 12 is a chamfer bevel edge, so that the edge is prevented from scratching an operator.
The joint of the top edge of the inclined hole 11 and the bottom edge of the heat conducting hole 12 is a chamfer bevel edge, so that the blank can be conveniently guided.
The external bottom surface of the die block 1 is a plane, so that the die block can be conveniently placed on a forging hydraulic press to stably bear force.
Two opposite side surfaces outside the die block 1 are planes, so that the die block can be conveniently clamped and fixed in a forging hydraulic press.
The eccentric forging forming process is carried out by using an eccentric forging forming die structure, and comprises the following steps of:
taking a blank made of a 316H austenite material, wherein the outer diameter of the blank is taken according to the ratio of the outer diameter to the formed outer diameter, and the deformation is 18-20%, and then heating to 1050 +/-5 ℃;
step two, extruding the bottom of the blank into the inclined hole 11 through a chamfer at the top of the inclined hole 11, integrally drawing out the small end 2 of the blank to finish deformation in the inclined hole 11, wherein the temperature of the small end 2 of the blank in the inclined hole 11 of the blind hole is about 1000 ℃, and the temperature of the large end of the blank is guaranteed to be about 980 ℃ +/-0.5 ℃ by hot air along the heat conduction hole 12;
and step three, on the basis of the small end formed in the inclined hole 11, upsetting deformation is carried out on the large end of the blank, so that the large end of the eccentric forging is formed, the deformation amount is 25% -30%, the large end 3 of the blank completely fills the heat conduction hole 12, the eccentric forging is taken out and directly subjected to water cooling, and the large-angle eccentric forging meeting the requirements is obtained.
Because the inclined hole 11 and the heat conduction hole 12 in the die block 1 are formed in one step, the problem that the grain size on the surface of the eccentric forging formed by machining is easy to grow up at high temperature is solved, and the mechanical property of the eccentric forging is prevented from being changed.
Claims (6)
1. The utility model provides an eccentric forging forming die structure which characterized in that includes: the die comprises a die block (1), wherein an inclined hole (11) for deformation forming of an eccentric forging piece is formed in the die block (1);
a heat conduction hole (12) is arranged on the top end die block (1) of the inclined hole (11), and the diameter of the heat conduction hole (12) is larger than that of the inclined hole (11) and the blank of the eccentric forging;
the bottom of the inclined hole (11) is a sealed closed hole; the temperature of the small end (2) of the blank heated to 1050 +/-5 ℃ in the sealed blind hole at the bottom of the inclined hole (11) is 1000 ℃, the small end (2) of the blank is integrally pulled out to complete deformation in the inclined hole (11), and the temperature of the bottom of the eccentric forging which is deformed first heats and expands the die block (1) in the blind hole.
2. The eccentric forging forming die structure of claim 1, wherein: the central point of the top of the inclined hole (11) is coincided with the central point of the heat-conducting hole (12).
3. The eccentric forging forming die structure of claim 1, wherein: the top edge of the heat conduction hole (12) is a chamfer bevel edge.
4. The eccentric forging forming die structure of claim 1, wherein: the joint of the top edge of the inclined hole (11) and the bottom edge of the heat conducting hole (12) is a chamfer bevel edge.
5. The eccentric forging forming die structure of claim 1, wherein: the external bottom surface of the die block (1) is a plane.
6. The eccentric forging forming die structure of claim 1, wherein: two opposite side surfaces outside the die block (1) are planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011381504.4A CN112589028B (en) | 2020-11-30 | 2020-11-30 | Eccentric forging forming die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011381504.4A CN112589028B (en) | 2020-11-30 | 2020-11-30 | Eccentric forging forming die structure |
Publications (2)
| Publication Number | Publication Date |
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| CN112589028A CN112589028A (en) | 2021-04-02 |
| CN112589028B true CN112589028B (en) | 2023-02-28 |
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| CN202011381504.4A Active CN112589028B (en) | 2020-11-30 | 2020-11-30 | Eccentric forging forming die structure |
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| CN102672096A (en) * | 2012-05-30 | 2012-09-19 | 重庆理工大学 | Precision die forging and shaping technical method for automobile steering knuckle rough type parts |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| CN109482807A (en) * | 2018-12-19 | 2019-03-19 | 四川民盛特钢锻造有限公司 | The crude green body forging mold and its forging method of dual stage gear formed forgings |
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
| CN110860644A (en) * | 2019-11-26 | 2020-03-06 | 苏州昆仑重型装备制造有限公司 | Closed extrusion forming process and forging die of output gear shaft |
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| JP3567264B2 (en) * | 1996-10-28 | 2004-09-22 | 愛三工業株式会社 | Hot extrusion forging die for titanium |
| JP2010029902A (en) * | 2008-07-29 | 2010-02-12 | Kyocera Corp | Forging die |
| CN202316882U (en) * | 2011-11-16 | 2012-07-11 | 天津重型装备工程研究有限公司 | Die for forging crank throw forged pieces of semi-built-up crank shaft |
| CN203265502U (en) * | 2013-03-07 | 2013-11-06 | 上海交通大学 | Hot forging device for transmission shaft joint fork with horizontal fork part |
| JP6057830B2 (en) * | 2013-04-26 | 2017-01-11 | 株式会社神戸製鋼所 | Hot forging die |
| CN203304469U (en) * | 2013-06-04 | 2013-11-27 | 望城县乌山联祥重型锻造有限公司 | Deep-hole spindle nose precision forging die |
| CN104139145A (en) * | 2014-08-11 | 2014-11-12 | 贵州航天新力铸锻有限责任公司 | Method for forging guide horn mouth forge pieces applied to internal components of nuclear reactor |
| CN111185562A (en) * | 2018-11-15 | 2020-05-22 | 湖北鑫锤锻造科技有限公司 | Eccentric forging and pressing die |
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- 2020-11-30 CN CN202011381504.4A patent/CN112589028B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672096A (en) * | 2012-05-30 | 2012-09-19 | 重庆理工大学 | Precision die forging and shaping technical method for automobile steering knuckle rough type parts |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| CN109482807A (en) * | 2018-12-19 | 2019-03-19 | 四川民盛特钢锻造有限公司 | The crude green body forging mold and its forging method of dual stage gear formed forgings |
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
| CN110860644A (en) * | 2019-11-26 | 2020-03-06 | 苏州昆仑重型装备制造有限公司 | Closed extrusion forming process and forging die of output gear shaft |
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| CN112589028A (en) | 2021-04-02 |
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