A welding backing with sand mould has been invented to realize welding penetration,which fully takes the place of gouging back chipping which has all kinds of shortcomings and disadvantages.

 
  • 研究發(fā)明的“背襯砂墊焊接工藝”能夠非常容易地實(shí)現焊透的目的,可以完全取代落后的碳弧氣刨清根工藝,克服了目前常用的碳弧氣刨清根所帶來(lái)的缺點(diǎn)、弊病和不足。
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