CN107716840B - Production process of ring forging - Google Patents
Production process of ring forging Download PDFInfo
- Publication number
- CN107716840B CN107716840B CN201710892347.5A CN201710892347A CN107716840B CN 107716840 B CN107716840 B CN 107716840B CN 201710892347 A CN201710892347 A CN 201710892347A CN 107716840 B CN107716840 B CN 107716840B
- Authority
- CN
- China
- Prior art keywords
- ring forging
- ring
- deformation
- upsetting
- forging
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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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
- 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
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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
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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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
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Abstract
The invention discloses a production process of a ring forging, which selects Q345D steel as a raw material, forges the ring forging, and also comprises the following steps: heating the ring forging to 1200-1240 ℃ and preserving heat for 2 h; after the heat preservation is finished, taking out the blank, drawing out the blank with the deformation of 50-55 percent, upsetting the blank with the deformation of 60-65 percent and controlling the final deformation temperature to be 1000-1050 ℃; grinding the ring to a required size, wherein the deformation is 40-50%, and the final deformation temperature is controlled to be 850-900 ℃; and air-cooling to room temperature. The method comprises the steps of drawing, upsetting and ring rolling in the same fire, controlling the deformation of the drawing, upsetting and ring rolling, controlling the temperature after the drawing, upsetting and ring rolling, and controlling the temperature after the drawing, upsetting and ring rolling to enable the yield strength of the produced ring forging to reach more than 360MPa, and performing a Charpy impact test of a V-shaped notch at-20 ℃ to enable the average value of impact energy to reach more than 120J.
Description
Technical Field
The invention relates to the field of heat treatment of metal materials, in particular to a production process of a ring forging.
Background
At present, for a ring forging which adopts Q345D steel as a raw material and has the requirement of 90-120 mm of wall thickness, the ring forging is subjected to quenching and tempering after being forged so that the yield strength is more than or equal to 350MPa, a Charpy impact test of a V-shaped notch is carried out at the temperature of minus 20 ℃, the average value of the impact energy is more than or equal to 100J, and the requirement of a client is met. However, since the thermal refining after forging is not only expensive but also inefficient, a new processing method is urgently required.
Disclosure of Invention
The invention aims to provide a production process of a ring forging to solve the problems of high treatment cost and low production efficiency due to the adoption of quenching and tempering after the existing ring forging is forged.
The purpose of the invention is realized by the following technical scheme:
a production process of a ring forging, which selects Q345D steel as a raw material, forges the raw material to obtain the ring forging, and further comprises the following steps:
a. heating the ring forging to 1200-1240 ℃ and preserving heat for 2 h;
b. after the heat preservation is finished, taking out the ring forging, drawing out the ring forging with the deformation of 50% -55%, then upsetting the ring forging with the deformation of 60% -65% and the final deformation temperature of 1000-1050 ℃;
c. ring rolling is carried out by a ring rolling machine until the required size of the ring forging piece is reached, the deformation is 40% -50%, the final deformation temperature is controlled to be 850-900 ℃, and the wall thickness of the ring forging piece is 90-120 mm;
d. and air-cooling to room temperature.
In a preferred embodiment of the present invention, the ring forging is heated in a heating furnace in step a.
In a preferred embodiment of the present invention, in step b, an electro-hydraulic hammer is used for elongation and an electro-hydraulic hammer is used for upsetting.
And c, the final deformation temperature in the step b is the temperature of the ring forging after drawing and upsetting, so that the drawing and upsetting efficiency is high, and the ring forging cannot be cooled down.
And c, the final deformation temperature in the step c is the temperature of the ring forging after ring rolling, so that the ring rolling efficiency is high, and the ring forging cannot be cooled.
The production process of the ring forging has the advantages that the ring forging is heated to 1200-1240 ℃, heat preservation is carried out for 2 hours, then drawing, upsetting and ring rolling are carried out, finally air cooling is carried out to room temperature, drawing, upsetting and ring rolling are carried out in the same fire, the yield strength of the produced ring forging reaches over 360MPa by controlling the deformation of drawing, the deformation of upsetting and the deformation of ring rolling, and the temperature after drawing, upsetting and the temperature after ring rolling are controlled, the ring forging is subjected to Charpy impact test of a V-shaped notch at the temperature of minus 20 ℃, and the average value of impact energy of the ring forging reaches over 120J.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It is to be understood that the embodiments described herein are illustrative only and are not limiting upon the present invention.
Example 1
In this embodiment, a production process of a ring forging, which uses Q345D steel as a raw material and forges the raw material to obtain the ring forging, further includes the following steps:
a. putting the ring forging into a heating furnace, heating to 1240 ℃, and preserving heat for 2 h;
b. after the heat preservation is finished, taking out the ring forging, drawing out the ring forging by adopting an electro-hydraulic hammer, wherein the deformation is 55%, then upsetting by adopting the electro-hydraulic hammer, the deformation is 65%, and the final deformation temperature is controlled at 1045 ℃;
c. ring rolling is carried out by a ring rolling machine until the required size of the ring forging piece is reached, the deformation is 50%, the final deformation temperature is controlled at 865 ℃, and the wall thickness of the ring forging piece is 90-120 mm;
d. and air-cooling to room temperature.
The yield strength of the ring forging produced by the process reaches 361MPa, and the Charpy impact test of a V-shaped notch is carried out at the temperature of minus 20 ℃, and the average value of the impact energy is 125J.
Example 2
In this embodiment, a production process of a ring forging, which uses Q345D steel as a raw material and forges the raw material to obtain the ring forging, further includes the following steps:
a. putting the ring forging into a heating furnace, heating to 1220 ℃, and preserving heat for 2 h;
b. after heat preservation is finished, taking out the ring forging, drawing out the ring forging by adopting an electro-hydraulic hammer, wherein the deformation is 52%, then upsetting the ring forging by adopting the electro-hydraulic hammer, the deformation is 62%, and the final deformation temperature is controlled at 1025 ℃;
c. ring rolling is carried out by a ring rolling machine until the required size of the ring forging piece is reached, the deformation is 46%, the final deformation temperature is controlled at 874 ℃, and the wall thickness of the ring forging piece is 90-120 mm;
d. and air-cooling to room temperature.
The yield strength of the ring forging produced by the process reaches 365MPa, and the average value of the impact energy is 180J when a Charpy impact test of a V-shaped notch is carried out at the temperature of minus 20 ℃.
Example 3
In this embodiment, a production process of a ring forging, which uses Q345D steel as a raw material and forges the raw material to obtain the ring forging, further includes the following steps:
a. putting the ring forging into a heating furnace, heating to 1200 ℃, and preserving heat for 2 h;
b. after the heat preservation is finished, taking out the ring forging, drawing out the ring forging by adopting an electro-hydraulic hammer, wherein the deformation is 51%, then upsetting the ring forging by adopting the electro-hydraulic hammer, the deformation is 60%, and the final deformation temperature is controlled at 1004 ℃;
c. ring rolling is carried out by a ring rolling machine until the required size of the ring forging piece is reached, the deformation is 42%, the final deformation temperature is controlled at 852 ℃, and the wall thickness of the ring forging piece is 90-120 mm;
d. and air-cooling to room temperature.
The yield strength of the ring forging produced by the process reaches 363MPa, and the Charpy impact test of the V-shaped notch is carried out at the temperature of minus 20 ℃, and the average value of the impact energy is 150J.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims.
Claims (3)
1. The utility model provides a production technology of ring forging, chooses Q345D steel as the raw materials, forges the raw materials and obtains ring forging, its characterized in that: further comprising the steps of:
a. heating the ring forging to 1200-1240 ℃ and preserving heat for 2 h;
b. after the heat preservation is finished, taking out the ring forging, drawing out the ring forging with the deformation of 50% -55%, then upsetting the ring forging with the deformation of 60% -65% and the final deformation temperature of 1000-1050 ℃;
c. ring rolling is carried out by a ring rolling machine until the required size of the ring forging piece is reached, the deformation is 40% -50%, the final deformation temperature is controlled to be 850-900 ℃, and the wall thickness of the ring forging piece is 90-120 mm;
d. and air-cooling to room temperature.
2. The production process of the ring forging according to claim 1, characterized in that: and (b) putting the ring forging into a heating furnace for heating in the step a.
3. The production process of the ring forging according to claim 1, characterized in that: and (b) drawing out by adopting an electro-hydraulic hammer, and upsetting by adopting the electro-hydraulic hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892347.5A CN107716840B (en) | 2017-09-27 | 2017-09-27 | Production process of ring forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892347.5A CN107716840B (en) | 2017-09-27 | 2017-09-27 | Production process of ring forging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107716840A CN107716840A (en) | 2018-02-23 |
| CN107716840B true CN107716840B (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710892347.5A Active CN107716840B (en) | 2017-09-27 | 2017-09-27 | Production process of ring forging |
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| CN (1) | CN107716840B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435998A (en) * | 2018-02-28 | 2018-08-24 | 武汉理工大学 | A kind of compound base hot rolling manufacturing process of ring |
| CN109482791A (en) * | 2018-11-16 | 2019-03-19 | 贵州航天新力铸锻有限责任公司 | A kind of C-shaped cross section ring centre embryo material preparation process |
| CN109482792A (en) * | 2018-11-19 | 2019-03-19 | 贵州航天新力铸锻有限责任公司 | A kind of C-shaped cross section centre embryo preparation process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442250A (en) * | 2003-04-07 | 2003-09-17 | 十堰同创工贸有限公司 | Processing technology of ring shaped parts |
| CN102019337B (en) * | 2009-09-22 | 2012-12-05 | 上海重型机器厂有限公司 | Rolling method for shaping integral top cover |
| CN103111562B (en) * | 2013-03-15 | 2015-08-19 | 中航卓越锻造（无锡）有限公司 | A kind of manufacture method of heavy wall height cylinder annular forging piece |
| CN103406720B (en) * | 2013-04-03 | 2016-04-13 | 江苏铁宝锻造有限公司 | A kind of flange manufacture method |
| CN104690514A (en) * | 2015-02-27 | 2015-06-10 | 电子科技大学中山学院 | Process for manufacturing tube plate by using hollow steel ingot |
| CN106734843B (en) * | 2016-11-18 | 2018-08-17 | 无锡宝露重工有限公司 | A kind of forging technology of middle carbon quenched and tempered steel gear ring |
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- 2017-09-27 CN CN201710892347.5A patent/CN107716840B/en active Active
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| CN107716840A (en) | 2018-02-23 |
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Effective date of registration: 20221219 Address after: 214000 Qianzhou industrial concentration zone, Huishan Economic Development Zone, Huishan District, Wuxi City, Jiangsu Province Patentee after: WUXI BAOLU HEAVY INDUSTRY CO.,LTD. Patentee after: Baolu Seiko technology (Wuxi) Co.,Ltd. Address before: 214000 Qianzhou industrial concentration zone, Huishan Economic Development Zone, Huishan District, Wuxi City, Jiangsu Province Patentee before: WUXI BAOLU HEAVY INDUSTRY CO.,LTD. |
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