The remaining 20% of the acetylene production is principally used for oxyacetylene cutting, heat treating, and welding. 乙炔生产的剩余20%主要用于氧乙炔切割、热处理和焊接。
It has been shown that the fine and spheroidal graphite is favourable to the oxyacetylene cutting perfomance. 发现,愈是细小、圆整石墨形态愈有利于气割。
Analysis showed that the oxyacetylene flame cutting heat had reaustenitized a portion of heat-effected layer of the cut section. 结果表明,切割下料时在切割面热影响层发生部分奥氏体化;
Many metal plates cutted by oxyacetylene cutting before is cutted by plasma cutting now, because of the inconvenience of the oxygen and acetylene supply, low productivity and machining quality. 由于供氧、乙炔麻烦,生产效率低,加工质量差,过去许多使用氧乙炔切割的金属材料,也渐渐地使用等离子切割。
Besides, there are many metal materials, such as copper, aluminum and stainless steel cannot be cut by oxyacetylene cutting, because of the high thermal conductivity, high melting-point or oxide of high melting-point and dross of high viscosity produced by cutting. 此外,还有很多金属,如铜、铝、不锈钢等,或因导热性强、或因熔点高、或切割时生成高熔点氧化物、或高粘度熔渣,不能采用氧乙炔切割。