在镍铬合金壳冠桥桥体焊接的问题上,一般系采用脚踏式风箱(皮老虎)、汽油筒和喷枪作焊接工具,但在焊接过程中,操作繁琐,火焰不稳定,特别是初学者不易掌握。因此,我们应用改革后的汽油喷灯代替脚踏式风箱作焊接工具。经过反复试验,焊接效果比较理想。 In the nickel-chromium alloy crown and bridge bridge body welding problems, the general Department of the use of foot-type bellows (skin tiger), barrel and spray gun for welding tools, but in the welding process, cumbersome operation, the flame instability, especially the beginning Scholars difficult to grasp. Therefore, we use a modified petrol torch instead of a foot-operated bellows as a welding tool. After repeated tests, the welding effect is ideal.