Solid solution system facilitating rapid heating and shock cooling

A rapid heating and quenching technology, which is applied in furnaces, heat treatment equipment, heat treatment furnaces, etc., can solve the problems that the performance of heat exchange tubes is greatly affected, and it is not suitable for duplex stainless steel 2205, etc., to achieve the effect of rapid cooling, simple structure, axial good flow effect

Inactive Publication Date: 2017-03-08
黄鸣
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Compared with traditional pure ferritic or austenitic stainless steel, duplex stainless steel 2205 has obvious phase transformation during heat treatment, which has a great impact on the performance of heat exchange tubes welded with this material, such as occurring at about 450 ° C and The brittleness changes around 800°C, which makes traditional stainless steel post-weld heat treatment equipment not suitable for duplex stainless steel 2205

Method used

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  • Solid solution system facilitating rapid heating and shock cooling

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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, it is used for solution treatment of duplex stainless steel pipes after welding, including two sets of driving wheel sets 1 located on the same straight line, anti-oxidation pipe 9 between the two sets of driving wheel sets 1 and sleeved on the anti-oxidation pipe 9 on the cooling chamber 7 and the heating chamber 10, the anti-oxidation pipe 9 is a tubular structure with a sealing ring 2 at both ends, the driving wheel set 1 includes two driving wheels, and the two driving wheels There is a gap for accommodating stainless steel pipes between them, the gap is located on the axis of the anti-oxidation pipe 9, and the anti-oxidation pipe 9 is also provided with an air outlet 3 and an air outlet, and the cooling chamber 7 and the heating chamber 10 are located at the air outlet 3 between the air outlet;

[0022] Described cooling chamber 7 is the water storage container that is provided with water inlet 8 and water outlet 5 on it, and described w...

Embodiment 2

[0026] The present embodiment is further limited on the basis of embodiment 1, as figure 1 As shown, in order to control the transmission speed of the duplex stainless steel pipe in the anti-oxidation pipe 9 and control the movement state of the duplex stainless steel pipe, the two sets of driving wheels 1 are located on the same horizontal plane.

[0027] In order to facilitate the control of the process parameters of the heating chamber 10 and the cooling chamber 7 , temperature sensors are installed in the heating chamber 10 and the cooling chamber 7 .

[0028] In order to facilitate the safety of the cooling chamber 7, a safety valve 4 is also provided on the cooling chamber 7.

[0029] In order to enable the protective gas to be used as a heat carrier to facilitate the rapid cooling of the duplex stainless steel pipe in the cooling chamber 7, the gas outlet 3 is located at the end of the anti-oxidation pipe 9 where the heating chamber 10 is disposed.

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Abstract

The invention discloses a solid solution system facilitating rapid heating and shock cooling. The solid solution system is used for carrying out solid-solution treatment on a post-weld duplex stainless steel pipe. The solid solution system comprises two drive wheel groups, an anti-oxidization tube, a cooling room and a heating room, wherein the anti-oxidization tube is of a tubular structure with sealing rings at two ends; each drive wheel group comprises two drive wheels; a gas inlet and a gas outlet are further formed in the anti-oxidization tube; and the cooling room is a water storage container with a water inlet and a water outlet therein. The solid solution system disclosed by the invention is simple in structure and facilitates flowing of each step of solid-solution treatment of the duplex stainless steel pipe, so that rapid heating and shock cooling within short time in a solid-solution treatment process are realized.

Description

technical field [0001] The invention relates to the field of mechanical engineering heat treatment equipment, in particular to a solid solution system that facilitates rapid heating and quenching. Background technique [0002] At present, the domestic 2205 stainless steel products include 2205 stainless steel pipes, 2205 duplex stainless steel seamless pipes; 2205 duplex stainless steel plates, 2205 stainless steel bars, forgings, pipe fittings, strips, etc. Early duplex stainless steels were resistant to moderate-strength uniform corrosion and chlorine stress corrosion cracking, but their performance was greatly reduced when used in welded situations. In order to improve this situation, nitrogen is added to duplex stainless steel 2205, which not only improves the corrosion resistance, but also improves the welding performance. Due to the special performance characteristics of 2205 dual-phase steel, it has a wide range of applications, and it is a grade that has been widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/00C21D9/08
Inventor 黄鸣
Owner 黄鸣
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