The Impact to WELDOX960 Steel Welding Joint Made by Strength Match

Zhi Ling Wang; Xiao Ding

doi:10.4028/www.scientific.net/AMM.668-669.277

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 668-669The Impact to WELDOX960 Steel Welding Joint Made...

The Impact to WELDOX960 Steel Welding Joint Made by Strength Match

Abstract:

As new generation of low alloy high strength steel, WELDOX960 is extensively applied into heavy-duty fields including engineering machine etc. This paper adopts mixed gas protection welding to make multi-layer and multi-channel welding to low alloy high strength steel WELDOX960, using match methods with different intensities to prepare six groups of samples, respectively. The performances including joint tension and impact etc are tested for analysis after welding. The result shows that backing welding is the most important technique process in multi-layer and multi-channel welding, which has significant impact to joint performance, in the precondition that the strength is satisfied, if the material with lower strength is taken as backing layer, toughness and plasticity of the joint can be improved significantly. For example, tensile strength of sample 50-90 reaches 966.3Mpa, which is the same as 90-90, however, its toughness increases by 15%.

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Periodical:

Applied Mechanics and Materials (Volumes 668-669)

Pages:

277-280

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.668-669.277

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Online since:

October 2014

Authors:

Zhi Ling Wang*, Xiao Ding

Keywords:

High Strength Steel (HSS), Impact Toughness, MAG Welding, Mechanics Performance, Weld Seam

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* - Corresponding Author

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