CN102909527A - Technological process for performing continuous casting-rolling formation on 42CrMo steel ring piece - Google Patents
Technological process for performing continuous casting-rolling formation on 42CrMo steel ring piece Download PDFInfo
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- CN102909527A CN102909527A CN2012103228951A CN201210322895A CN102909527A CN 102909527 A CN102909527 A CN 102909527A CN 2012103228951 A CN2012103228951 A CN 2012103228951A CN 201210322895 A CN201210322895 A CN 201210322895A CN 102909527 A CN102909527 A CN 102909527A
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Abstract
The invention discloses a technological process for performing a continuous casting-rolling formation on 42CrMo steel ring piece, and belongs to the technical field of batch production of medium-small scale ring pieces. The technological process is characterized by comprising the following steps of: alloy melting, refining of steel liquid, centrifugal casting of ring blanks, hot rolling, heat treatment and refining, wherein the step of refining of steel liquid is to melt the steel liquid in a basic electric arc furnace at 1680-1700 DEG C; and the step of centrifugal casting of ring blanks is to perform centrifugal pouring on the refined steel water to form ring blanks at 1550-1560 DEG C, demould the ring blanks at 1200-1250 DEG C after the pouring is finished, convey the ring blanks to a radial-axial rolling machine by a conveying system and directly roll and form the ring blanks at 1050 DEG C by utilizing blank casting afterheat. The process has the advantages that the utilization ratio of the material is improved, the technological process is shortened, the production cost is reduced, the quality and the accuracy of the ring piece are improved, the energy source and manpower resources are saved, and the production efficiency is improved.
Description
Technical field
The invention belongs to the ring production technical field, be specifically related to the technological process that progressive forming is rolled in a kind of 42CrMo steel loop spare casting.
Background technology
Fast development along with high-tech areas such as boats and ships, chemical industry equipment, Aero-Space and the energy, more and more extensive to high-quality, high-precision bearing demand, ring rolling technology also develops rapidly as efficient, the advanced manufacturing technology of producing bearing ring.Traditional ring forming technology flow process is to smelt-make steel billet-heating to make forging stock-punching-rolling forming, then carry out machined, this forming technology not only operation is tediously long, the waste material, and through several times heating, energy waste is serious, be unfavorable for that current national is to the enforcement of industry reduction of discharging, low-carbon (LC) target, production efficiency is low, be unsuitable for especially the batch production of middle-size and small-size ring, and heating for multiple times causes the quality that ring oxide skin increases also affects drip molding.
Summary of the invention
The objective of the invention is to solve the flow process that progressive forming technique is rolled in a kind of 42CrMo steel loop spare casting, can effectively save material, the energy, enhance productivity.
The present invention specifically is achieved in that and it is characterized in that technological process is: alloy melting → liquid steel refining → centrifugal casting ring base → hot rolling → heat treatment → finishing, wherein:
1, described liquid steel refining is to adopt the refining of basic electric arc furnace oxidizing process, and smelting temperature is 1680 ℃ ~ 1700 ℃;
2, described centrifugal casting ring base is that refined molten steel is poured into a mould 1550 ℃ ~ 1560 ℃ the time, depanning in the time of 1200 ℃ ~ 1250 ℃ after casting finishes;
3, described hot rolling is that the ring base is transported on footpath-axial ring rolling machine through induction system, utilizes the strand waste heat directly to carry out rolling forming under 1050 ℃.
Advantage of the present invention and good effect are:
1. compared with the prior art, the present invention has reduced manufacturing procedure, has saved processing cost, has saved the energy, material, equipment investment, has improved production efficiency.
2. the present invention obtains well behaved ring base through casting, directly carry out hot rolling after, grain refining effect is good, the shape and size precision of ring is high, intensity is identical with the forging requirement with toughness.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail
This example is selected the 42CrMo steel, requires the ring base to be of a size of: external diameter φ 871mm, internal diameter φ 516mm, height 241mm.Rolling forming spare dimensional requirement is: external diameter φ 1248mm, internal diameter φ 1045mm, height 234mm.Technological process is: alloy melting → liquid steel refining → centrifugal casting ring base → hot rolling → heat treatment → precision truing step.Wherein:
1. adopt basic electric arc furnace oxidizing process refined molten steel, smelting temperature is 1700 ℃;
2. refined molten steel is carried out centrifugal casting under 1560 ℃, depanning in the time of 1250 ℃ after centrifugal casting finishes;
To encircle base and be delivered on D53K-4000 numerical control footpath-axial ring rolling machine through conveyer belt, utilize the strand waste heat, treat directly to carry out when temperature is 1050 ℃ rolling forming.D53K-4000 numerical control footpath-axially the feed rate of idle roll of ring rolling machine is 1mm/s, and the rolling linear velocity is 1300 mm/s, radial rolling power 2500KN, and axially rolling power 2000KN will leave certain allowance during rolling.
Claims (1)
1. the progressive forming technological process is rolled in a 42CrMo steel loop spare casting, it is characterized in that: comprise alloy melting → liquid steel refining → casting ring base → hot rolling → heat treatment → finishing, wherein:
1. described liquid steel refining is to adopt the refining of basic electric arc furnace oxidizing process, and smelting temperature is 1680 ℃ ~ 1700 ℃;
2. described casting ring base is that refined molten steel is carried out centrifugal casting at 1550 ℃ ~ 1560 ℃, and centrifugal casting finishes rear 1200 ℃ ~ 1250 ℃ depannings;
3. described hot rolling is that the ring base is transported on footpath-axial ring rolling machine through induction system, utilizes the strand waste heat directly to carry out rolling forming in the time of 1070 ℃ ~ 1050 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322895.1A CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322895.1A CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102909527A true CN102909527A (en) | 2013-02-06 |
| CN102909527B CN102909527B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210322895.1A Expired - Fee Related CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117822A (en) * | 2014-07-10 | 2014-10-29 | 芜湖市海联机械设备有限公司 | Precise cold rolled ring forming process |
| CN104525890A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Semisolid manufacturing process of opposite roller spinning strain induction method of submarine ring rib cylindrical shell |
| CN104525799A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Large ring semisolid manufacturing process using radial-axial rolling strain induction method |
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| CN88101307A (en) * | 1988-03-13 | 1988-09-14 | 纪绍祥 | Casting and forging technique of ring blank of roller bearing |
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2012
- 2012-09-04 CN CN201210322895.1A patent/CN102909527B/en not_active Expired - Fee Related
Patent Citations (7)
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| CN88101307A (en) * | 1988-03-13 | 1988-09-14 | 纪绍祥 | Casting and forging technique of ring blank of roller bearing |
| JPH02255268A (en) * | 1989-03-28 | 1990-10-16 | Kawasaki Heavy Ind Ltd | Production of disk made of super heat resisting alloy |
| US6153082A (en) * | 1996-05-03 | 2000-11-28 | Asarco Incorporated | Copper cathode starting sheets |
| CN101011792A (en) * | 2007-02-08 | 2007-08-08 | 范承祥 | Manufacturing method for annular forging piece |
| CN101412183A (en) * | 2008-11-28 | 2009-04-22 | 首钢总公司 | Method for producing high-carbon chromium bearing steel by double retarded cooling process |
| CN101817134A (en) * | 2010-03-22 | 2010-09-01 | 太原科技大学 | Short-flow casting and rolling composite forming method for ferrule piece |
| CN101915273A (en) * | 2010-08-13 | 2010-12-15 | 新兴铸管股份有限公司 | Novel bearing ring material and production process thereof |
Non-Patent Citations (2)
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| 张锋: "基于铸坯的环件热辗扩成形工艺数值模拟", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技I辑》, no. 10, 15 October 2011 (2011-10-15), pages 022 - 209 * |
| 赵磊: "42CrMo环件铸造凝固过程的数值模拟与实验研究", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技I辑》, no. 10, 15 October 2011 (2011-10-15), pages 022 - 119 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117822A (en) * | 2014-07-10 | 2014-10-29 | 芜湖市海联机械设备有限公司 | Precise cold rolled ring forming process |
| CN104525890A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Semisolid manufacturing process of opposite roller spinning strain induction method of submarine ring rib cylindrical shell |
| CN104525799A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Large ring semisolid manufacturing process using radial-axial rolling strain induction method |
| CN104525799B (en) * | 2014-12-26 | 2016-05-25 | 西安交通大学 | The semisolid manufacturing process of the radial-axial rolling strain-induced method of large ring |
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| CN102909527B (en) | 2016-01-06 |
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Granted publication date: 20160106 Termination date: 20160904 |