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Abrasion resistant steel and low-carbon steel dissimilar metal submerged-arc welding technology

A welding process and dissimilar metal technology, applied in the field of dissimilar metal welding process, to achieve the effect of reducing production cost, ensuring normal production and high weld strength

Active Publication Date: 2015-05-20
云南昆钢新型复合材料开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of welding high-carbon, high-manganese wear-resistant steel and low-carbon steel dissimilar metals when welding wear-resistant composite material blanks, the invention provides a high-carbon, high-manganese wear-resistant steel and low-carbon steel dissimilar metals Submerged arc welding welding process, through the adjustment and control of welding position, welding parameters, interlayer temperature, etc., when welding high-carbon, high-manganese wear-resistant steel and low-carbon steel dissimilar metals, pre-weld preheating, post-welding The purpose of slow cooling is to make the weld seam free of cracks after the welding is completed, and then the weld seam will not crack after being heated by the heating furnace, so as to ensure the smooth progress of rolling

Method used

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  • Abrasion resistant steel and low-carbon steel dissimilar metal submerged-arc welding technology
  • Abrasion resistant steel and low-carbon steel dissimilar metal submerged-arc welding technology
  • Abrasion resistant steel and low-carbon steel dissimilar metal submerged-arc welding technology

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Effect test

Embodiment 1

[0046] The submerged arc welding process of wear-resistant steel and low carbon steel dissimilar metals, the welding schematic diagram is as follows figure 2 shown, including the following steps:

[0047] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire 5, and keep the welding wire dry, oil-free, and rust-free in the welding area; choose alkaline flux as the flux, and the flux must be at 300°C before welding Bake for 2 hours;

[0048] In step (2), under the conditions of welding voltage of 25V, welding current of 250A, welding speed of 0.2m / min, groove depth of 10mm, groove angle of 120°, and interlayer temperature of 40°C, wear-resistant steel Full welding with the low carbon steel groove, and the connection method is DC positive connection during welding;

[0049] Step (3), during the first welding, the first welding 6 is carried out on the low carbon steel side 1, and the second welding 10 is carried out directly on the wear-resistant steel 2 ...

Embodiment 2

[0056] The submerged arc welding process of wear-resistant steel and low carbon steel dissimilar metals, the welding schematic diagram is as follows figure 2 shown, including the following steps:

[0057] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire, and keep the welding wire dry, oil-free, and rust-free in the welding area; choose alkaline flux as the flux, and the flux must be baked at 400 ° C for 1 Hour;

[0058] In step (2), under the conditions of welding voltage of 45V, welding current of 550A, welding speed of 1.0m / min, groove depth of 15mm, groove angle of 100°, and interlayer temperature of 120°C, wear-resistant steel Full welding with the low carbon steel groove, and the connection method is DC positive connection during welding;

[0059] Step (3), during the first welding, the first welding 6 is carried out on the low carbon steel side 1, and the second welding 10 is carried out directly on the wear-resistant steel 2 side after the...

Embodiment 3

[0066] The submerged arc welding process of wear-resistant steel and low carbon steel dissimilar metals, the welding schematic diagram is as follows figure 2 shown, including the following steps:

[0067] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire, and keep the welding wire dry, oil-free, and rust-free in the welding area; choose alkaline flux as the flux, and the flux must be baked at 350°C for 1.5 hours before welding. Hour;

[0068] In step (2), under the conditions of welding voltage of 35V, welding current of 400A, welding speed of 0.5m / min, groove depth of 20mm, groove angle of 90°, and interlayer temperature of 80°C, wear-resistant steel Full welding with the low carbon steel groove, and the connection method is DC positive connection during welding;

[0069] Step (3), during the first welding, the first welding 6 is carried out on the low carbon steel side 1, and the second welding 10 is carried out directly on the wear-resistant st...

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Abstract

The invention relates to an abrasion resistant steel and low-carbon steel dissimilar metal submerged-arc welding technology and belongs to the technical field of dissimilar metal welding technologies. According to the technology, by the adjustment and controlling to welding positions, welding parameters, interlayer-temperature and the like, when the high-carbon and high-manganese abrasion resistant steel is welded with the low-carbon steel dissimilar metal, the purposes of preheating before welding and slow cooling after welding are achieved, so that no cracks occur in welding seams after welding is completed, the welding seams do not crack after being heated again through a heating furnace, and it is guaranteed that rolling goes on smoothly. Compared with a traditional abrasion resistant steel and low-carbon steel dissimilar metal welding technology, the abrasion resistant steel and the low-carbon steel dissimilar metal submerged-arc welding technology has no special requirements for raw materials and equipment, so that the manufacturing cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of dissimilar metal welding technology, and in particular relates to a dissimilar metal welding technology related to wear-resistant steel and low carbon steel. Background technique [0002] Wear-resistant steel is generally high carbon (C), high manganese (Mn) alloy steel. Wear-resistant steel is usually used to process and manufacture wear-resistant lining plates and sieve plates, and to produce and transport cement slurry, ore slurry and other transportation pipes. Wear-resistant composite materials produced by low-carbon steel and wear-resistant steel not only have the performance of wear-resistant steel, but also reduce the consumption of wear-resistant steel, thereby reducing the consumption of alloy elements such as manganese (Mn), so wear-resistant composite materials It is gradually replacing the application of wear-resistant steel in various fields. [0003] The production process of wear-resista...

Claims

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Application Information

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IPC IPC(8): B23K9/18B23K9/235B23K9/02
CPCB23K9/02B23K9/18B23K9/235
Inventor 张竹明杜顺林尹正培张跃李俊兴王云春武绍权
Owner 云南昆钢新型复合材料开发有限公司
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