铸铁冷焊时焊接电流对过渡层白口组织的影响

• 作 者: 周敏惠
• 出 处: 机械制造
• 发表日期: 1957年09期
• 关键词: 焊接电流 白口组织 过渡层 过渡区 冷却速度 合金元素 渗碳体 焊接速度 焊接要求 激烈性

鑄铁冷焊时,焊接电流对於焊縫过渡区的白口組織有很大影响。焊接电流的大小,决定着焊件的綫能量和冷却速度,焊条的加热程度、与合金元素自焊条向焊縫金屬的过渡量,这也就影响了过渡層白口組織出現的嚴重程度。焊件的冷却速度根据上式看來,焊接电流的增大,

When cast iron is cold welded, the welding current has a great influence on the white-stained structure of the weld transition zone. The size of the welding current determines the line energy and cooling rate of the weldment, the degree of heating of the welding rod, and the amount of alloying element transition from the welding rod to the weld metal, which also affects the severity of the white streaks in the transition zone. The cooling rate of weldment According to the above equation, the welding current increases,