摘要
本文采用混料回归设计调整配方,探讨了钛酸型不锈钢焊条冶金过程中硅元素的过渡规律及影响因素。结果表明,焊条药皮中含量较多的硅铝酸盐是熔敷金属增硅的主要原因。一定量的合金粉对焊缝成分有一定的稀释降硅作用。稀土镁合金对硅的还原反应有较强的抑制能力。赤铁矿和氟化稀土分别在其最佳加入量时,熔敷金属中的硅含量最低。
The Laws and effecting factors of sil icon element transition of titanium acid type stainless steel electrodes in welding metallurgy arc studied adoptting a method of optimum seeking experiment combined with mixture regresson design.The results show that the main reason for the silicon content increased in the deposited metal is derived from that more silicon-aluminium acid salts are added in coating of electrodes .A given mass of alloy powder in the covering of electrode can play a certain part to dilute the chemical composition and reduce the silicon content in deposited metal. The rareearth magnesium alloy can stronglier restrain the reduction reaction of silicon element in welding metallurgy.The lowest silicon content is obtained with the optimum addition of hematite or RE fluride in the covering of electrode.
关键词
硅元素过渡
不锈钢
焊条
熔敷金属
silicon element transition
stainless steel electrode
deposited metal
