Determination of Pulse Welding Parameter for Improvement of Fatigus Strength

提高疲劳强度的脉冲焊接参数的确定

• 批准号: 61460207
• 负责人: SHINODA Takeshi
• 金额: $ 4.42万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61460207/
• 关键词: Fatigue; Fatigue strength; TIG dressing; 応力集中係数; CO2溶接; 高張力綱; パルス溶接; TIG溶接; 再溶融; 表面張力論

Welded joints may have influence on its fatigue strength by joint configulation,particurally toe geometries.Several works have been done to improve fatigue strength by TIG dressing. However,TIG derssing causes additional angular distortion to welded joints.From this reason smaller heat input is required. But smaller welding current may wondering along weld seam line, and pulse TIG will give a solution to prevent this wondering during a small heat input treatment.This experiment were carried out to clarify the effect of pulse parameters on fatigue strengthy of welded joints by pulse TIG dessing.Obtained results were as follows: 1.Pulse TIG dessing made a remarkable fatiegue strength.2.TIG dressing under a smaller heat input can be used.

焊接接头的疲劳强度受接头形状的影响，特别是焊趾的几何形状。然而，TIG去毛刺会使焊接接头产生额外的角变形，因此需要较小的热输入。本文通过脉冲TIG熔修试验，研究了脉冲参数对脉冲TIG熔修焊接接头疲劳性能的影响，结果表明：1.脉冲TIG熔修具有显著的疲劳强度; 2.脉冲TIG熔修可以在较小的热输入下进行。

项目成果

T.Shinoda: "Prediction of Welded Geometry for CO2 Butt Welded Jcints" Metal Costruction. (1988)

T.Shinoda：“CO2 对焊接头焊接几何形状的预测”金属结构。

T.Shinoda: Metal Construction. (1988)

T.Shinoda：金属结构。