Knife embryo technology for inlaid mechanical blades

At present, the existing blade blank of steel-inserted mechanical blade is to first grind the surface of high carbon alloy tool steel or high speed steel used as blade and low carbon steel used as blade body clean to make them free of oil stain and rust, then assemble the two into a blade blank of a certain shape, and weld all the joints of the two by electric welding to make them sealed and airtight. The purpose is to heat all the surfaces to be welded in the high temperature furnace, keep them clean and not oxidized. In this way, when the blade blank reaches a certain temperature and is rolled by a rolling mill, the bimetallic blade blank is compounded into a blank blade under the action of high temperature and high pressure.

The problems and disadvantages of the prior art are as follows: Since high carbon alloy steel and low carbon alloy steel are directly welded, preheating before welding and tempering after welding must be adopted. In addition, argon arc welding or other protective gas welding must be adopted. In addition, since the high carbon alloy steel is directly welded, the welding part must be in a cast state, which affects the edge strength. At the same time, the possibility of welding cracks at the weld is also relatively large, which will affect the composite quality.