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Method for welding ferritic stainless steel with trailing intense cooling

A welding method and ferrite technology, used in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as grain growth, and achieve the effects of good welding quality, good weld fusion, and accurate data.

Active Publication Date: 2013-02-27
太原理工技术转移有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to aim at the situation of the background technology, adopt liquid nitrogen to quench with welding in the process of tungsten argon arc welding of ferritic stainless steel, improve the welding joint The cooling rate of ferritic stainless steel can be improved to improve the grain growth of ferritic stainless steel after welding, so as to improve the mechanical properties and corrosion resistance of ferritic stainless steel welded joints

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  • Method for welding ferritic stainless steel with trailing intense cooling
  • Method for welding ferritic stainless steel with trailing intense cooling
  • Method for welding ferritic stainless steel with trailing intense cooling

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with accompanying drawing:

[0068] figure 1 As shown in the figure, it is a state diagram of chill welding of ferritic stainless steel plate with welding. The position and connection relationship of each part must be correct, configured according to the quantity, and operated in sequence.

[0069] The amount of chemical substances used in welding is determined according to the pre-set range in millimeters, milliliters, centimeters 3 is the unit of measurement.

[0070] The tungsten argon arc welding of ferritic stainless steel plate is carried out on the welding workbench, which is completed by the argon arc welding machine in the process of liquid nitrogen quenching, argon protection, and adding ferritic stainless steel welding wire;

[0071] The welding workbench is horizontal, and a welding fixture 17 is installed on the upper part of the welding workbench 1, and the first and second ferritic st...

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Abstract

The invention relates to a method for welding ferritic stainless steel with trailing intense cooling and aims at the problem that a crystal grain grows and is brittle in the welding process of the ferritic stainless steel. A argon tungsten-arc welding machine is adopted, liquid nitrogen is used in the welding process to conduct welding with trailing intense cooling, and argon is used for protection, so that the problem that the crystal grain grows and is brittle in the welding heat affected zone is effectively prevented, the data are full and accurate, the quality of a welding joint is good, a welding line is good in fusion property and is not easily cracked, the strength of extension of the welding line is up to 481.5MPa, and therefore, the method is a quite ideal method for welding ferritic stainless steel.

Description

technical field [0001] The invention relates to a ferritic stainless steel welding chill welding method, which belongs to the technical field of ferritic stainless steel welding and application. Background technique [0002] For a long time, austenitic stainless steel has been selected in the technical field for its good corrosion resistance and mechanical properties. Due to the small reserves of nickel element and the high price of nickel, the production cost of austenitic stainless steel has gradually increased; with the development of steelmaking equipment With the development of smelting technology, ferritic stainless steel with high purity and good comprehensive performance has been produced. It not only has the mechanical properties and corrosion resistance of austenitic stainless steel, but also has better local corrosion resistance than austenitic stainless steel. , Ferritic stainless steel has been widely used in the fields of home appliances, automobiles, archite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167B23K9/235
Inventor 张红霞王文光闫志峰卜颖宏裴飞飞王凯李洁赵艺喆
Owner 太原理工技术转移有限公司
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