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Butting welding method of stainless steel plate

A stainless steel plate and welding method technology, applied in welding equipment, welding/welding/cutting items, arc welding equipment, etc., can solve the problems of broken belt parking, low pass rate, weld cracking, etc.

Active Publication Date: 2010-01-27
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the existing butt welding method of stainless steel plate, in the welding process, the weld seam has welding defects due to various reasons. During the production process, the welding seam cracked and caused the broken belt to stop

Method used

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  • Butting welding method of stainless steel plate
  • Butting welding method of stainless steel plate
  • Butting welding method of stainless steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the Ni stainless steel plate 1 and the stainless steel plate 11 having a thickness of 9 mm and a width of 1500 mm are welded.

[0034] The butt welding method embodiment of the stainless steel plate is the following sequential steps:

[0035] 1. Cut off the uneven arc portion of the material head 5 of the stainless steel plate 1, and cut off the uneven arc portion of the material tail 19 of the stainless steel plate 11 to make the welding surface smooth, see figure 1 and figure 2 ;

[0036] 2. Place the material head 5 of the stainless steel plate 1 and the material tail 9 of the stainless steel plate 11 on the platform 3 of the welding machine 2, open the feeding roller to adjust the gap 8 between the material head 5 and the material tail 9 of the two stainless steel plates to 2.2 mm~2.4mm, the gap 8 is located directly below the welding torch, and the material head 5 and the material tail 9 are pressed tightly by the pressure plate 4 and the pre...

Embodiment 2

[0041] In this embodiment, a Ni stainless steel plate 1 and a stainless steel plate 11 with a thickness of 12 mm and a width of 1500 mm are welded.

[0042] The butt welding method embodiment of the stainless steel plate is the following sequential steps:

[0043] 1. Cut off the uneven arc portion of the material head 5 of the stainless steel plate 1, and cut off the uneven arc portion of the material tail 9 of the stainless steel plate 11 to make the welding surface smooth, see figure 1 and figure 2 ;

[0044] 2. Place the material head 5 of the stainless steel plate 1 and the material tail 9 of the stainless steel plate 11 on the platform 3 of the welding machine 2, open the feeding roller to adjust the gap 8 between the material head 5 and the material tail 9 of the two stainless steel plates to 2.8 mm ~ 3.0mm, and use the pressure plate 4 and the pressure plate 10 to compress the material head 5 and the material tail 9 respectively;

[0045] 3. Select the welding torch...

Embodiment 3

[0049] In this embodiment, a Ni stainless steel coil 16 and a stainless steel coil 18 with a thickness of 10 mm and a width of 1500 mm are welded.

[0050] The butt welding method embodiment of the stainless steel plate is the following sequential steps:

[0051] 1. Cut off the uneven arc portion of the material head 17 of the stainless steel coil 16, and remove the uneven arc portion of the material tail 19 of the stainless steel coil 20 to make the welding surface smooth, as shown in Figure 3;

[0052] 2. Place the material head 17 of the stainless steel coil 16 and the material tail 19 of the stainless steel coil on the platform 3 of the welding machine 2, open the feeding roller to adjust the gap 18 between the material head 17 of the stainless steel coil 16 and the material tail 19 of the stainless steel coil 20 2.2mm to 2.6mm, and use the pressure plate 4 and the pressure plate 10 to compress the material head 17 and the material tail 19 respectively, and the gap 18 is l...

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PUM

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Abstract

The invention discloses a butting welding method of a stainless steel plate, sequentially comprising the following steps of: 1 removing the concave-convex parts at the material head and the material tail of the stainless steel plate or a stainless steel coil; 2 putting the material head of the welded stainless steel plate or the material head and the material tail of the stainless steel coil on a platform of a welding machine, and adjusting the gap between the two material heads; 3 selecting welding guns during welding; 4 adjusting welding voltage, wire feeding speed and welding speed; and 5 starting up a welding procedure and automatically welding. The method is characterized of adjusting the gap of the different welding sews, welding voltage, the wire feeding speed and the welding speed according to the thickness of the stainless steel plate or the stainless steel coil; when the thickness of the steel plate is larger than and equal to 8mm and is less than 12mm, welding with a fist welding gun and a second welding gun, wherein the voltage of the two welding guns are 28-30V; and when the thickness of the stainless steel plate is larger than and equal to 12 mm, welding with four welding guns. The method can weld the stainless steel plate with thickness of 8-14mm.

Description

technical field [0001] The invention relates to a butt welding method of stainless steel plates. Background technique [0002] At present, the thickness of the domestically produced stainless steel is no more than 6mm, and the width is no more than 1300mm. The welding method of high current and high voltage is used in the welding process. After the world's largest wide stainless steel production line is put into operation in our factory, The newly installed welding machine has never performed online butt welding of coiled stainless steel plates with a thickness of more than 8mm and a width of more than 1500mm. With the existing butt welding method of stainless steel plate, in the welding process, the weld seam has welding defects due to various reasons. During the production process, the welding seam cracked and caused the broken belt to stop. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the existing butt welding method for ...

Claims

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Application Information

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IPC IPC(8): B23K9/025B23K9/095B23K9/235B23K103/04
Inventor 穆景权伏越
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD