Titanium steel composite plate manufacturing technique for turbine condenser

A production process and composite plate technology, which is applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problems of titanium steel composite plate technology is not fully mature, product scrapping, the combination rate can not withstand continuous processing characteristics, etc. , to achieve the effect of improving the consistency of the interface bonding strength, shortening the exhaust path, and expanding the process window

Inactive Publication Date: 2017-10-13
冯健
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

So far, domestic explosive welding technology for large-format titanium-steel clad plates with a length or width greater than 4000 mm is not yet fully mature, especially in terms of technical indicators such as bonding rate, unevenness, and sustainable processing characteristics that cannot meet the special requirements of this field. requirements, often resulting in economic losses such as product scrap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] (TA2+Q235B) titanium steel composite plate for steam turbine condenser, finished product size is (4+40)×3850×6220mm. Its production process is:

[0016] Step 1: base and double board treatment;

[0017] 1. Substrate processing:

[0018] (1) The substrate material is Q235B steel plate, the thickness selected is 3 times the thickness of the finished substrate, that is, 120mm, the width is 3900mm, and the length is 1 / 3 of the length of the finished product, plus the end cutting amount of the finished product is 120mm, that is, the length of the feeding substrate is 2194 (2074+120) mm, so the feeding size of the substrate is 120×3900×2194mm;

[0019] (2) Use mechanical methods to remove the oxide layer on the surface of the substrate to be bonded, exposing the fresh metal surface, and ensure that the roughness of the surface to be bonded Ra≤1.6um.

[0020] 2. Double board processing:

[0021] (1) The composite board material is TA2 board, the thickness is 3 times the th...

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Abstract

The present invention adopts four processes of base, double plate treatment, explosive welding, rolling and forming for the titanium steel clad plate used in the steam turbine condenser. The difficult problem of the explosive welding technology of the titanium-steel clad plate in the width makes the production efficiency and the quality of the titanium-steel clad plate used for the steam turbine condenser greatly improved; More than 320MPa, more than twice the national standard of 140MPa, ensures that the titanium steel clad plate for steam turbine condenser will not be delaminated or cracked during continuous processing such as drilling or pressing; secondly, by adjusting the rolling process parameters, While considering the uniform heating of the carbon steel substrate, the recrystallization status of the titanium plate at this temperature is also taken into consideration, and strive to meet the rolling temperature requirements within the rolling temperature and achieve the least precipitation of harmful phases on the titanium plate.

Description

technical field [0001] The invention relates to an explosive welding and rolling production process, belongs to the field of metal composite plate manufacturing, and in particular relates to a production process of a titanium-steel composite plate for a steam turbine condenser. Background technique [0002] With the development of my country's electric power construction, the demand for large-format titanium-steel clad plates for steam turbine condensers in the electric power field will increase rapidly in the next few years. Due to the difficulty in producing large-format titanium-steel clad plates, only individual enterprises in China currently use them. Explosive welding technology for production. So far, the domestic explosion welding technology for large-format titanium-steel clad plates with a length or width greater than 4000mm is not yet fully mature, especially in terms of technical indicators such as bonding rate, unevenness, and sustainable processing characteristi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K20/08
CPCB23P15/00B23K20/08B23K2101/006B23K2101/18B23K2103/24
Inventor 冯健
Owner 冯健
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