Harbin Welding Institute Limited Company

Xiao Guo

Kai Xu

Chao Wei

Pengbo Wu

Shaowei Chen

Laibo Sun

Xiaomei Sun

Naiwen Fang

Haoquan Yang

Yinglong Jiang

Ying Han

Zijia Yang

Wei Feng

Yujun Xu

Shubin Huo

Yiming Ma

Xiaochun Lv

Bo Chen

Bei Song

Hanmin Wu

Provided is a comprehensive quantitative evaluation method and system for welding usability of welding consumables. The evaluation method includes: obtaining welding data of target welding consumables; calculating metric values of the welding data corresponding to the target welding consumables, where the metric values include a mean and a variance; establishing a hierarchical structure model; establishing a priority relationship matrix of each level in the hierarchical structure model and calculating a weight set of each level; determining a corresponding membership function according to indicator data of the bottom level of welding usability of the target welding consumables, where the indicator data of the bottom level is the metric value of the welding data corresponding to the target welding consumables; and determining quantitative evaluation indicators of the usability of the target welding consumables using the weight set and a comment set calculated by the membership function according to the hierarchical structure model.

Comprehensive quantitative evaluation method and system for welding usability of welding consumables

Disclosed are a flux-cored welding strip and a welding flux used in combination for submerged arc welding of a duplex stainless steel, and preparation methods and use thereof. The flux-cored welding strip is composed of a stainless steel shell and a flux core powder, the flux core powder consisting of the following components: in percentages by mass, ferrochrome nitride: 0.70% to 1.0%, a chromium powder: 26% to 27%, a nickel powder: 4.5% to 5.5%, a molybdenum powder: 3.7% to 4.2%, a manganese powder: 2.55% to 2.65%, a copper powder: 1.45% to 1.55%, a ferrosilicon powder: 1.1% to 1.2%, a tungsten powder: 1.0% to 1.15%, a niobium powder: 0.25% to 0.35%, an aluminum powder: 0.35% to 0.55%, a rhenium powder: 0.35% to 0.40%, a lanthanum powder: 0.1% to 0.15%, and a balance being an iron powder.

Flux-cored welding strip and welding flux used in combination for submerged arc welding of duplex stainless steel, and preparation methods and use thereof

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Harbin, China

Xiao Guo