要获得高质量的割口,确定钢的氧切割规范具有决定性意义。氧切割规范包括:预热火焰功率,单位时间内可燃气体的消耗量(A),预热氧消耗量(K),割嘴至被切割金属表面的距离(a),切割速度(割炬沿被切割金属表面的运动速度)(V_1),切割氧通过喷嘴的流动速度(V_2),切割氧喷嘴孔的断面面积(F),被切割金属的厚度(δ)及钢的牌号。 In order to obtain a high quality cut, it is of decisive importance to determine the specification of steel oxygen cutting. Oxygen cutting specifications include: preheat flame power, combustible gas consumption per unit time (A), preheated oxygen consumption (K), cutting nozzle to be cut metal surface distance (a), cutting speed (V_1), the flow rate of cutting oxygen through the nozzle (V_2), the cross-sectional area (F) of the cut oxygen nozzle hole, the thickness of the metal to be cut (δ), and the grade of the steel.