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一把性能良好的焊炬应具备下述条件:(1)能使可燃气体(乙炔)与氧气按比例地均勻混合;(2)能使調整好的混合比在焊接过程中保持不变;(3)混合气体从焊嘴流出的速度适当。国产中小号低压气焊炬基本上能滿足上述要求,但在实际生产中尚不能严格保証混合比和流速不变。它在焊接不銹鋼零件时有下列缺点: 焊接1Cr18Ni9Ti不銹鋼时,为了保証焊縫有一定的抗腐蝕性和机械性能,必須严格控制氧-乙炔火焰,
A good performance torch shall have the following conditions: (1) to enable uniform mixing of combustible gas (acetylene) and oxygen in proportion; (2) to maintain the adjusted mixing ratio unchanged during the welding process; 3) The mixed gas flows out from the tip at an appropriate speed. Domestic small and medium pressure gas torch can basically meet the above requirements, but in actual production can not be strictly guaranteed mixing ratio and flow rate unchanged. It has the following disadvantages in the welding of stainless steel parts: 1Cr18Ni9Ti stainless steel welding, in order to ensure that the weld has a certain corrosion resistance and mechanical properties, we must strictly control the oxy-acetylene flame,