What if oxygen welds don't stick
The temperature is not enough, the knife and the head of the knife are in place first, and then some copper powder is good to stick to
When welding the blade is heated to red, right amount into the solder powder (borax) and then put the blade in (blade had better put on the grinding wheel to welding surface treatment), and then heated to the blade dark red, copper electrode micro hot melt again after add borax in the joint between the blade to blade leakage amount, and will continue to heat the blade saw copper water seeping from below, you're done.
Use neutral flame when welding, and the energy size is chosen according to the size of the vehicle. 2, when heated, flame core distance blade 3-5 mm, heated the blade, cutting head is heated with embers, (segment of small size, easy to heat, the temperature is too high, the oxidation of the cutting tools); To be dark red in the knife body, heat copper electrode, and remove the solder (borax), apply to the head of the knife. Borax, which melts into liquid as the temperature rises, seeps into the gap between the head and the blade, and if the knife swipes, the penetration is good. Both the body and the head of the knife are red. 5, the welding torch up 20-30 mm, the copper wire from the top of the blade and the clearance of the cutting tools, with the flame straight wire, welding wire melting, and then quickly using flame around the slit purging, outflow bright copper liquid in the gap, adjust the Angle of the cutting tools at this time, leave the flame. The copper in the head of the knife is solidified, the color is dark red, put in the heat preservation box, the heat preservation will be used after 24 hours.
