CN102441628A - Forging heating method for sealing ring of forge piece - Google Patents
Forging heating method for sealing ring of forge piece Download PDFInfo
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- CN102441628A CN102441628A CN201010501759XA CN201010501759A CN102441628A CN 102441628 A CN102441628 A CN 102441628A CN 201010501759X A CN201010501759X A CN 201010501759XA CN 201010501759 A CN201010501759 A CN 201010501759A CN 102441628 A CN102441628 A CN 102441628A
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- forging
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- sealing ring
- heating method
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Abstract
The invention discloses a forging heating method for a sealing ring of a forge piece. The forging heating method comprises the following steps of: placing an NiCr20TiAl-T6 forging stock in a heating furnace with the temperature of 300DEG C; then raising the temperature to be 800DEG C at a constant speed; maintaining the temperature for 3.8 hours; raising the temperature to be 1150DEG C at a constant speed within 3 hours; and maintaining the temperature for 3 hours and then taking out the forging stock for forging. According to the forging heating method disclosed by the invention, material selection, production process fineness and processing deployment are required to be reasonable and scientific; vacuum melting electoslag remelting steel is used as the material; a strict heating forging control process is formulated for solving the key technical problems of narrow range (100-120DEG C) of forging temperature, high resistance to deformation, easiness for cracking, coarse crystal, loose center and control over critical deflection and intermediate forging process; and the sealing ring of the forge piece has excellent mechanical property.
Description
Technical field
The present invention relates to a kind of Forge Heating method of forging sealing ring.
Background technology
At present the sealing ring of steam turbine main inlet throttle-stop valve pitch assembly normally adopts round steel to process through machining, heat treatment, and this type sealing ring exists that intensity is low, inner materials shortcoming closely not, the big technical problem of deflection after the heat treatment.
Summary of the invention
Technical problem to be solved by this invention is to provide to the existing technical problem of processing method of existing sealing ring a kind of Forge Heating method of forging sealing ring, to solve the existing in prior technology problem.
Technical problem to be solved by this invention can realize through following technical scheme:
A kind of Forge Heating method of forging sealing ring; It puts into temperature with the NiCr20TiAl-T6 forging blank is 300 ℃ of heating furnaces, in 4 hours, at the uniform velocity is warming up to 800 ℃ then, is incubated 3.8 hours; In 3 hours, at the uniform velocity be warming up to 1150 ℃ again, be incubated to take out after 3.5 hours and forge.
Owing to adopted technical scheme as above; Science is rationally disposed in material selection of the present invention, manufacturing process thickness, processing; Material adopts the vacuum metling electroslag melt steel, formulates strict heats forged control technology and solves narrow forging temperature (100-120 ℃), and resistance of deformation is big; Easy to crack, coarse-grain, center porosity, critical strain amount and middle forging process control key technical problem, its forging sealing ring has good mechanical performance.
The specific embodiment
In order to make technological means of the present invention, creation characteristic, to reach purpose and effect and be easy to understand and understand,, further set forth the present invention below in conjunction with specific embodiment.
A kind of Forge Heating method of forging sealing ring; It puts into temperature with the NiCr20TiAl-T6 forging blank is 300 ℃ of heating furnaces, in 4 hours, at the uniform velocity is warming up to 800 ℃ then, is incubated 3.8 hours; In 3 hours, at the uniform velocity be warming up to 1150 ℃ again, be incubated to take out after 3.5 hours and forge.
The yield strength of forging sealing ring of the present invention can reach 600N/mm
2, tensile strength can reach 1000-1300N/mm
2, percentage elongation>=12%, shrinkage factor>=12%, impulsive force>=20J, hardness HB305-405.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (1)
1. the Forge Heating method of a forging sealing ring; It is characterized in that; It is 300 ℃ of heating furnaces that the NiCr20TiAl-T6 forging blank is put into temperature, in 4 hours, at the uniform velocity is warming up to 800 ℃ then, is incubated 3.8 hours; In 3 hours, at the uniform velocity be warming up to 1150 ℃ again, be incubated to take out after 3.5 hours and forge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010501759XA CN102441628A (en) | 2010-10-11 | 2010-10-11 | Forging heating method for sealing ring of forge piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010501759XA CN102441628A (en) | 2010-10-11 | 2010-10-11 | Forging heating method for sealing ring of forge piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102441628A true CN102441628A (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010501759XA Pending CN102441628A (en) | 2010-10-11 | 2010-10-11 | Forging heating method for sealing ring of forge piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102441628A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784863A (en) * | 2012-08-09 | 2012-11-21 | 湖北上大模具材料科技有限公司 | High-alloy steel forging and heating method |
| CN103014473A (en) * | 2012-12-26 | 2013-04-03 | 洛阳双瑞特种装备有限公司 | Machining process of Ti-containing corrosion-resisting alloy sealing ring |
| CN104259360A (en) * | 2014-07-29 | 2015-01-07 | 张家港市广大机械锻造有限公司 | Heating process of Cr9SiMn bearing steel before forging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06170418A (en) * | 1992-12-04 | 1994-06-21 | Japan Steel Works Ltd:The | Manufacture of forging work roll for hot rolling |
| JPH07138719A (en) * | 1993-11-13 | 1995-05-30 | Kobe Steel Ltd | Method for forging ni-based superalloy forged part |
| CN101153360A (en) * | 2006-09-29 | 2008-04-02 | 宝山钢铁股份有限公司 | Method of producing large scale high-temperature alloy round cake |
-
2010
- 2010-10-11 CN CN201010501759XA patent/CN102441628A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06170418A (en) * | 1992-12-04 | 1994-06-21 | Japan Steel Works Ltd:The | Manufacture of forging work roll for hot rolling |
| JPH07138719A (en) * | 1993-11-13 | 1995-05-30 | Kobe Steel Ltd | Method for forging ni-based superalloy forged part |
| CN101153360A (en) * | 2006-09-29 | 2008-04-02 | 宝山钢铁股份有限公司 | Method of producing large scale high-temperature alloy round cake |
Non-Patent Citations (3)
| Title |
|---|
| 《锻压技术》 19980831 黄春峰 高温合金（GH3039）环形件的锻造工艺 11-13 1 , 第4期 * |
| 王有铭: "R-26高温合金密封环锻造", 《机械工程师》, no. 05, 10 May 2010 (2010-05-10), pages 159 - 160 * |
| 黄春峰: "高温合金（GH3039）环形件的锻造工艺", 《锻压技术》, no. 4, 31 August 1998 (1998-08-31), pages 11 - 13 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784863A (en) * | 2012-08-09 | 2012-11-21 | 湖北上大模具材料科技有限公司 | High-alloy steel forging and heating method |
| CN103014473A (en) * | 2012-12-26 | 2013-04-03 | 洛阳双瑞特种装备有限公司 | Machining process of Ti-containing corrosion-resisting alloy sealing ring |
| CN103014473B (en) * | 2012-12-26 | 2015-01-21 | 洛阳双瑞特种装备有限公司 | Machining process of Ti-containing corrosion-resisting alloy sealing ring |
| CN104259360A (en) * | 2014-07-29 | 2015-01-07 | 张家港市广大机械锻造有限公司 | Heating process of Cr9SiMn bearing steel before forging |
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Application publication date: 20120509 |