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汽车上的铸铝汽缸盖损坏,主要是由于长时间受水中盐碱成分的浸蚀,使缸盖与缸体接触的水孔边缘腐蚀漏水。我们是采用不用焊药的气焊方法修复的。铸铝气焊条的制做将旧活塞或材质相同的铸铝件放在钳锅中,待熔化后倒在角铁中铸成条状,冷却后用焊枪烤其一端,边熔化、边向后移动铸条,使铸条变细,达到使用要求。焊前准备只需做一个小工具,即将φ3～4毫米的铁或铜的园条,一头打成扁平状。工件不用开坡口,也不用予热。焊咀的选择焊咀尺寸按焊件大小、厚薄来定,由于铝散热性好,要比焊碳钢时稍
The aluminum cylinder head on the car is damaged, mainly due to the erosion of the saline-alkali component in the water for a long time, so that the edge of the water hole in contact with the cylinder head and the cylinder body corrodes and leaks. We are repaired by gas welding without flux. Casting aluminum gas welding rod made of the old piston or the same material on the pliers in the pot, to be melted down in the angle iron cast into a bar, after cooling with a torch baked one end, while melting, while back Move the casting rod to make the casting rod thinner and meet the requirements for use. Preparation of welding Just make a small tool, is about φ3 ~ 4 mm iron or copper garden bar, flattened one flat. Workpiece without groove, do not give heat. The choice of tip Tsui welding tip size by size, thickness to be fixed, due to good heat dissipation of aluminum than when welding carbon steel slightly