Welding method for ferri-chromium-aluminum cold-rolled thin plate during continuous production of cold line

A technology of cold-rolled thin plates and welding methods, which is applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of poor weldability of iron-chromium-aluminum materials, save time, manpower and material resources, avoid losses, Realize the effect of continuous mass production

Active Publication Date: 2014-12-24
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology

[0003] Iron-chromium-aluminum material has poor weldability, and iron-chromium-aluminum has almost no weldability with itself

Method used

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  • Welding method for ferri-chromium-aluminum cold-rolled thin plate during continuous production of cold line

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Experimental program
Comparison scheme
Effect test

Embodiment

[0027] The welding method of iron-chromium-aluminum cold-rolled sheet during cold line continuous production comprises the following steps:

[0028] (1) Downward welding is adopted between the iron-chrome-aluminum plate and the 304 leader, the iron-chrome-aluminum plate is on top, and the 304 leader is on the bottom;

[0029] The width of FeCrAl strip is 1240mm, and the thickness of FeCrAl and 304 leader is 1.0mm.

[0030] (2) The overlap between the Fe-Cr-Al plate and the 304 leader should be 90-100mm, among which 90mm is the best;

[0031] (3) The first step is automatic resistance spot welding by machine:

[0032] Two rows of machine solder joints are set in parallel in the overlapping area, and the solder joints on the two rows are staggered at 45°; The vertical distance in the direction is 50mm; the welding current is set to 30A;

[0033] (4) The second step is manual electric welding with ordinary welding machine:

[0034] A402 stainless steel electrode with a diamet...

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Abstract

The invention discloses a welding method for a ferri-chromium-aluminum cold-rolled thin plate during continuous production of a cold line, and belongs to the field of welding methods. The method for realizing welding by three steps comprises: (1) spot welding by a machine; (2) electric welding by a worker; (3) welding of stacking sheets. A ferri-chromium-aluminum material is welded by the three-step method, so that stability and reliability of welding are guaranteed, and continuous annealing and acid pickling production of the cold-rolled ferri-chromium-aluminum material on the cold line is realized.

Description

technical field [0001] The invention relates to a welding method for continuous production of iron-chromium-aluminum cold-rolled thin plates on a cold line, and belongs to the field of welding methods. Background technique [0002] Iron-chromium-aluminum materials are widely used in electric heating elements and heat-resistant elements, and have broad market prospects. However, due to its brittleness at room temperature and poor weldability, it is difficult to realize cold rolling, continuous annealing and pickling production. In recent years, Taiyuan Iron and Steel Co., Ltd. has invested a lot of manpower and material resources to overcome various difficulties in the continuous mass production of iron-chromium-aluminum steel. One of the links is the welding process during the continuous production of the cold line after the iron-chromium-aluminum coil is cold-rolled. [0003] Iron-chromium-aluminum materials have poor weldability, and iron-chromium-aluminum materials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02
CPCB23K31/02B23K2103/18
Inventor 杨兴洲郭高峰
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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