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A kind of method for warm forging of twz series stainless steel

A stainless steel and warm forging technology, applied in the field of TWZ series stainless steel warm forging, can solve the problems of substandard strength, underproduction, scrapping, etc., and achieve the effect of improving the pass rate

Active Publication Date: 2016-04-27
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing warm forging method of TWZ series stainless steel only determines the time of wet forging and the reduction amount of warm forging by estimating the surface temperature, resulting in processing cracks, substandard strength and substandard magnetic permeability during forging. Lead to the scrapping of the whole piece after production
Not only result in production loss, but also cause contract default

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The embodiment of the method for this TWZ series stainless steel warm forging comprises following steps in sequence:

[0015] ⅠForging round hot forging After the forging is completed, the diameter of the round steel is Φ145, and the temperature of the round steel is 910;

[0016] Ⅱ Transfer the round steel directly into the online solid solution pool, and keep the water temperature in the solid solution pool at 28-30°C in the solid solution pool for 30s, and cool the round steel to 540°C;

[0017] Ⅲ Round steel is warm forged at 540°C for 3 minutes, 1 pass for warm forging, and the total reduction of warm forging is 10mm.

Embodiment 2

[0019] The embodiment of the method for this TWZ series stainless steel warm forging comprises following steps in sequence:

[0020] ⅠForging round hot forging After the forging is completed, the diameter of the round steel is Φ185mm, and the temperature of the round steel is 930°C;

[0021] Ⅱ Transfer the round steel directly into the online solid solution pool, and keep the water temperature in the solid solution pool at 28-30°C in the solid solution pool for 60s, and cool the round steel to 560°C;

[0022] Ⅲ Round steel is warm forged at 560°C for 4 minutes, 1 pass for warm forging, and the total reduction of warm forging is 10mm.

Embodiment 3

[0024] The embodiment of the method for this TWZ series stainless steel warm forging comprises following steps in sequence:

[0025] ⅠForging round hot forging After the forging is completed, the diameter of the round steel is Φ225mm, and the temperature of the round steel is 950°C;

[0026] Ⅱ Transfer the round steel directly into the online solid solution pool, and keep the water temperature in the solid solution pool at 28-30°C in the solid solution pool for 70s, and cool the round steel to 600°C;

[0027] Ⅲ round steel is warm forged at 600℃ for 5 minutes, 1 pass of warm forging, and the total reduction of warm forging is 12mm.

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Abstract

The invention relates to a TWZ series stainless steel warm forging method, which comprises the following steps in sequence: I, enabling the temperature of round steel to be 900-1000 DEG C after forging forged steel round bar; II, directly transferring the forged steel round bar into an on-line solid solution bath for 25-90 seconds and cooling the forged steel round bar to 550-650 DEG C, wherein the water temperature of the solid solution bath is kept to be 25-30 DEG C; III, performing warm forging on the forged steel round bar at 550-650 DEG C for no less than 3 minutes, wherein the total rolling reduction of the warm forging is controlled to be 10-20mm in the diameter direction as required. According to the TWZ series stainless steel warm forging method, the percent of pass is high and is up to 90%.

Description

technical field [0001] The invention relates to a method for warm forging of TWZ series stainless steel. Background technique [0002] TWZ series stainless steel belongs to austenitic stainless steel, which is good in thermoplastic and has excellent properties such as high strength, ultra-low magnetic permeability, wear resistance and intergranular corrosion resistance. The existing warm forging method of TWZ series stainless steel only determines the time of wet forging and the reduction amount of warm forging by estimating the surface temperature, resulting in processing cracks, substandard strength and substandard magnetic permeability during forging. Lead to the scrapping of the whole piece after production. It not only caused production losses, but also caused contract defaults. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the existing TWZ series stainless steel warm forging method, the present invention provides a TWZ ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/06B21J1/06
Inventor 叶相飞许立伟
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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