How is the welding tool produced?
Large-scale production to is seen The daily production of 1000 or so to see the production process is the round steel or fang after heat treatment with a hammer to hit it into tool guy And then with water chestnut and the model of the tool by using air hammer The guy turned it into tool by the method of extruding and shearing blade, and then melting in the use of copper as turning the head and body of a sticky patch Gummed up the blade and the blade. This step is to attach the copper plate to the blade and blade and then use the high frequency heat to melt the copper plate to the interlock of the knife and blade. And then in the air cold. This is a little bit of dirt. But it won't be too big for the small workshop
Use gas welding running copper to cement hard alloy. To finish the knife, use the gas welding to run on the copper layer, which is copper wire with borax. Then the hard alloy is welded.
Is turning on ordinary carbon steel tool rod welding, brazing carbide blade, after grinding (figure 4-19), and its advantages are simple structure, easy fabrication, and can according to the need for sharpening, the use of cemented carbide is sufficient, so quite proportion at present is still in the tool. Defect is the cutting performance of carbide turning tool mainly depends on the workers of the grinding technology, with modern production does not adapt, moreover tool rod can't reuse. In the manufacturing process, as a result of hard alloy and tool rod material (usually medium carbon steel) of different linear expansion coefficient, when the welding process is not reasonable easy to generate thermal stress, seriously will lead to crack of cemented carbide, when welding carbide insert accordingly, should as far as possible using low melting temperature of solder, the blade should be slow heating and slow cooling, for easy to produce crack YT30 are cemented carbide, should put a layer of stress compensator in weld. The welding assembly tool is a carbide tip that is soldered to the blade, and the blade is mounted on the tool pole. This structure is used for heavy vehicle knives. Heavy tool size and weight is bigger, use after welding fabricated structure, only need to loading and unloading of the knife block, grinding energy, tool holder can be repeated use
