正交法研究WSPA钢热裂敏感性的影响因素

• 作 者: 李开煜
• 机 构: 武钢钢研所,
• 出 处: 武钢技术
• 发表日期: 1987年08期
• 关键词: 正交法 WSPA 热裂 敏感性试验 焊接热输入 应变量 耐候钢 热影响区 影响因素 正交表

针对磷对WSPA耐候钢的热裂敏感性的影响,用正交试验设计,开展了可变拘束热裂敏感性试验。选用L_9〈3〉~4的表头,变更磷含量、焊接热输入量和应变量,研究对该钢的焊缝凝固裂纹和热影响区(H、A、Z)的液化裂纹的影响。一、正交设计的选择与试验方案的建立试验采用三因素三水平,即三种不同的磷含量、三种不同的热输入量和三种不同的应变拘束条件,选用的L_9〈3〉~4正交表和试验方案如表1、表2。

In view of the effect of phosphorus on the thermal cracking susceptibility of WSPA weathering steels, the orthogonal restraint design was adopted to carry out a variable confinement thermal susceptibility test. The influence of liquefaction crack on the weld and heat affected zone (H, A, Z) of the steel was investigated by changing the content of phosphorus, the amount of welding heat input and the amount of strain using the L9 <3> ~ 4 gauge. First, the choice of orthogonal design and test program to establish three levels of three tests, that is, three different phosphorus content, three different heat input and three different strain constraints, the choice of L_9 <3> 4 orthogonal table and test program in Table 1, Table 2.