The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out.
对含镍3．5％低温钢手工电焊条配方中稀土钇与硼的作用进行了试验研究。
The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out.
对含镍3．5％低温钢手工电焊条配方中稀土钇与硼的作用进行了试验研究。
应用推荐