CN103192013A - Method for controlling forging state 316LN steel forging crack initiation - Google Patents
Method for controlling forging state 316LN steel forging crack initiation Download PDFInfo
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- CN103192013A CN103192013A CN2013101276993A CN201310127699A CN103192013A CN 103192013 A CN103192013 A CN 103192013A CN 2013101276993 A CN2013101276993 A CN 2013101276993A CN 201310127699 A CN201310127699 A CN 201310127699A CN 103192013 A CN103192013 A CN 103192013A
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Abstract
The invention discloses a method for controlling forging state 316LN steel forging crack initiation and belongs to the technical field of the forging process. According to a critical deformation curve, the critical deformation decreases along with temperature rising, and increases along with strain rate increasing, so that forging state 316LN steel forging crack initiation can be controlled by a 'low-temperature high-speed forging', namely during forging state 316LN steel forging, initial forging temperature is 1000+/-20 DEG C-1100+/-20 DEG C, and strain rate is at magnitude order of 10-2-10-1. By the method, deformation of each heating number is increased, total deformation heating number is decreased, energy consumption is lowered, forming cycle is shortened, cost is lowered, efficiency and economical benefits are improved, no cracks occur, and performance requirements of workpieces are met. Due to the fact that the initial forging temperature is low, energy consumption low and cost is low.
Description
Technical field
The invention belongs to the Forging Technology technical field, be specifically related to a kind of method that crack initiation is made in attitude 316LN forging of forging of controlling.
Background technology
It is that many fire time small deformation amount high temperature are forged slowly that the method for crackle is made in solution 316LN forging both at home and abroad at present, namely begins to forge at 1200 ℃ ± 20 ℃, and strain rate is 10
-3The order of magnitude, each deflection is little, and the additional potential stress that is caused by distortion is also little, has so just avoided the generation of face crack.But the shortcoming of doing like this is: initial forging temperature height, energy consumption height; Each deflection is little, and fire is inferior many, the energy consumption height, and the distortion cycle is long, the cost height, efficient is low, and economic benefit is low.
Summary of the invention
The present invention seeks to the shortcoming that exists at prior art, provide a kind of 316LN of control forging to make the new method of crack initiation, capable of reducing energy consumption, shorten forming period, reduce cost, enhance productivity and economic benefit.
The present invention seeks to realize like this:
Be 201310024108.X according to application number, name is called critical strain amount curved surface described in " a kind of method of predicting forged steel forge crack germinating " and can knows by inference: to be the critical strain amount reduce with the rising of temperature the Changing Pattern of critical strain amount, increases with the increase of strain rate.Also can control and forge attitude 316LN forging and make crack initiation so can know the method for employing " low temperature is forged soon " by inference, it is characterized in that: when forging attitude 316LN steel and forge, initial forging temperature is 1000 ℃ ± 20 ℃-1100 ℃ ± 20 ℃, and strain rate is 10
-2-10
-1The order of magnitude forges.
Advantage of the present invention and good effect are: the method that adopts low temperature to forge soon, can increase the inferior deflection of every fire, and total like this distortion fire lacks, and cuts down the consumption of energy, and shortens forming period, reduces cost, enhances productivity and economic benefit.Moreover initial forging temperature reduces, and energy consumption is low, and cost is low.Adopt method of the present invention simultaneously, can not crack equally, satisfy the performance requirement of workpiece.
The specific embodiment
Being example to forge attitude 316LN steel flat anvil jumping-up, adopting " high temperature is forged slowly " method, is 1200 ℃ ± 20 ℃ as initial forging temperature, and strain rate is 0.005s
-1The time, its critical strain amount is about 0.58, and adopts " low temperature is forged soon " of the present invention method, is 1000 ℃ ± 20 ℃ as initial forging temperature, strain rate is 0.5s
-1The time, its critical strain amount is about 0.755.As seen adopting the each deflection of " low temperature is forged soon " of the present invention method is the 1.3(of prior art " high temperature is forged slowly " method
) doubly, the distortion fire will reduce greatly like this, energy consumption reduces, and forming period shortens, and cost reduction, efficient and economic benefit improve greatly.Adopt method of the present invention simultaneously, can not crack equally, satisfy the performance requirement of workpiece.
Claims (1)
1. control the method that crack initiation is made in forging attitude 316LN forging for one kind, it is characterized in that initial forging temperature is 1000 ℃ ± 20 ℃-1100 ℃ ± 20 ℃ when forging attitude 316LN steel is forged, strain rate is 10
-2-10
-1The order of magnitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101276993A CN103192013A (en) | 2013-04-15 | 2013-04-15 | Method for controlling forging state 316LN steel forging crack initiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101276993A CN103192013A (en) | 2013-04-15 | 2013-04-15 | Method for controlling forging state 316LN steel forging crack initiation |
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| Publication Number | Publication Date |
|---|---|
| CN103192013A true CN103192013A (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101276993A Pending CN103192013A (en) | 2013-04-15 | 2013-04-15 | Method for controlling forging state 316LN steel forging crack initiation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226619A (en) * | 2021-12-07 | 2022-03-25 | 太原科技大学 | Construction method of forging process window of large shaft type forge piece |
Citations (5)
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|---|---|---|---|---|
| JP2003277899A (en) * | 2002-03-25 | 2003-10-02 | Kurimoto Ltd | Magnesium alloy member and its production method |
| CN1488457A (en) * | 2002-07-19 | 2004-04-14 | ͨ�õ�����˾ | Constant-temp. forging in the air for nickel-base super heat-resistant alloy |
| JP2010131621A (en) * | 2008-12-03 | 2010-06-17 | Kobe Steel Ltd | Method for predicting occurrence of forging crack and method for forging |
| CN101758159A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Near isothermal forging method for whole titanium alloy disc shaft forgeable piece |
| CN102091751A (en) * | 2010-12-03 | 2011-06-15 | 太原科技大学 | Control method for 316 LN steel heavy-forging forging crystalline grain |
-
2013
- 2013-04-15 CN CN2013101276993A patent/CN103192013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003277899A (en) * | 2002-03-25 | 2003-10-02 | Kurimoto Ltd | Magnesium alloy member and its production method |
| CN1488457A (en) * | 2002-07-19 | 2004-04-14 | ͨ�õ�����˾ | Constant-temp. forging in the air for nickel-base super heat-resistant alloy |
| JP2010131621A (en) * | 2008-12-03 | 2010-06-17 | Kobe Steel Ltd | Method for predicting occurrence of forging crack and method for forging |
| CN101758159A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Near isothermal forging method for whole titanium alloy disc shaft forgeable piece |
| CN102091751A (en) * | 2010-12-03 | 2011-06-15 | 太原科技大学 | Control method for 316 LN steel heavy-forging forging crystalline grain |
Non-Patent Citations (2)
| Title |
|---|
| 张义帅: ""316LN不锈钢锻造裂纹分析及工艺控制"", 《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 - 138 * |
| 潘品李等: ""核电主管道用钢316LN高温变形性能研究"", 《中国机械工程》, vol. 23, no. 11, 15 June 2012 (2012-06-15), pages 1354 - 1359 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226619A (en) * | 2021-12-07 | 2022-03-25 | 太原科技大学 | Construction method of forging process window of large shaft type forge piece |
| CN114226619B (en) * | 2021-12-07 | 2023-06-16 | 太原科技大学 | Construction method of forging process window of large shaft forging |
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Application publication date: 20130710 |