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Welding process of wear-resistant steel and low carbon steel dissimilar metal gas metal arc welding

A technology of melting electrode gas and welding process, which is applied in the direction of metal processing equipment, welding equipment, manufacturing tools, etc., to achieve the effects of no cracks in the weld, lower production costs, and high weld strength

Active Publication Date: 2017-02-22
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 The metal gas shielded welding process, through the adjustment and control of the welding position, welding parameters, interlayer temperature, etc., achieves high-carbon, high-manganese wear-resistant steel and low-carbon steel when welding dissimilar metals. The purpose of post-slow cooling is to make the weld seam free of cracks after welding, and to ensure the smooth progress of rolling

Method used

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  • Welding process of wear-resistant steel and low carbon steel dissimilar metal gas metal arc welding
  • Welding process of wear-resistant steel and low carbon steel dissimilar metal gas metal arc welding
  • Welding process of wear-resistant steel and low carbon steel dissimilar metal gas metal arc welding

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Effect test

Embodiment 1

[0048] A welding process of wear-resistant steel and low-carbon steel dissimilar metal gas metal arc welding, comprising the following steps:

[0049] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire as the welding wire, and the welding wire should be dry, oil-free and rust-free before use and in the welding area to achieve the effect of hydrogen elimination treatment. For CHW-50C6, the diameter is 1.2mm;

[0050] Step (2), the wiring method during welding is direct current connection, which can heat the weldment; when the welding voltage is 20V, the welding current is 160A, the welding speed is 0.2m / min, the groove depth is 10mm, and the groove angle 90°, CO 2 The gas flow rate is 5L / min, and the interlayer temperature is 40°C, and the above wear-resistant steel and low carbon steel grooves are fully welded;

[0051] Step (3), during the first welding, perform the first welding 10 from the low-carbon steel 2 side, after the welding is completed, ...

Embodiment 2

[0058] A welding process of wear-resistant steel and low-carbon steel dissimilar metal gas metal arc welding, comprising the following steps:

[0059] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire as the welding wire, and the welding wire should be dry, oil-free and rust-free before use and in the welding area to achieve the effect of hydrogen elimination treatment. For CHW-50C6, the diameter is 1.2mm;

[0060] Step (2), the wiring method during welding is direct current connection, which can heat the weldment; when the welding voltage is 40V, the welding current is 300A, the welding speed is 1.5m / min, the groove depth is 15mm, and the groove angle 110°, CO 2 Under the conditions of gas flow rate of 18L / min and interlayer temperature of 120°C, full welding is carried out on the above wear-resistant steel and low carbon steel grooves;

[0061] Step (3), during the first welding, perform the first welding 10 from the low-carbon steel 2 side, afte...

Embodiment 3

[0068] A welding process of wear-resistant steel and low-carbon steel dissimilar metal gas metal arc welding, comprising the following steps:

[0069] Step (1), choose dry, oil-free, rust-free ordinary carbon steel welding wire as the welding wire, and the welding wire should be dry, oil-free and rust-free before use and in the welding area to achieve the effect of hydrogen elimination treatment. For CHW-50C6, the diameter is 1.2mm;

[0070] Step (2), the wiring method during welding is direct current connection, which can heat the weldment; when the welding voltage is 30V, the welding current is 230A, the welding speed is 1m / min, the groove depth is greater than or equal to 10mm, and the groove angle 140°, CO 2 Under the condition of gas flow rate of 10L / min and interlayer temperature of 80°C, full welding is carried out on the above wear-resistant steel and low carbon steel grooves;

[0071] Step (3), during the first welding, perform the first welding 10 from the low-carb...

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Abstract

The invention relates to an abrasion resistant steel and low-carbon steel dissimilar metal consumable electrode gas shielded welding technology and belongs to the technology 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 consumable electrode gas shielded 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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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/173
CPCB23K9/173B23K2103/04
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