1. The structure of welding tools should have sufficient rigidity to ensure the maximum allowable boundary size and the grade and heat treatment of high-strength steel;
2. Hard alloy blades should be firmly fixed. The welding blade of hard alloy cutting tools should be firmly fixed, and its groove and welding quality are guaranteed. Therefore, the groove shape of the blade should be selected based on the shape of the blade and the geometric parameters of the tool;
3. Carefully inspect the toolbar.
Before welding the hard alloy blade onto the tool holder, it is necessary to inspect both the blade and the tool holder. Firstly, check if the supporting surface of the blade is severely bent. The welding surface of hard alloy cutting tools should not have a severe carburized layer. At the same time, the dirt on the surface of the hard alloy blade and the tooth slot of the tool holder should be removed to ensure the reliability of welding;
4. Reasonable selection of solder
To ensure welding strength, suitable solder should be selected. During the welding process, good wetting and flowability should be ensured, bubbles should be removed, and the welding should be in full contact with the alloy welding surface without any shortage of welding;
5. Proper selection of solder flux
Suggest using industrial borax. Before use, it should be dehydrated in a drying oven, then crushed, sieved to remove mechanical fragments, and prepared for use;
6. Choose a patch
To reduce welding stress, it is recommended to use 0.2-0.5mm thick plate or 2-3mm mesh diameter compensating gasket to weld high titanium low cobalt fine-grained alloy and long thin alloy blades;
7. Proper use of grinding methods
Hard alloy cutting tools have high brittleness and are highly sensitive to crack formation. Overheating or quenching should be avoided during the grinding process. At the same time, it is necessary to choose the appropriate size of the grinding wheel and a reasonable grinding process to avoid the occurrence of grinding cracks, which may affect the service life of the cutting tool;
8. Install tools correctly
When installing hard alloy cutting tools, the length of the tool head extending out of the tool holder should be as small as possible, otherwise it is easy to cause tool vibration and damage the alloy parts;
9. Correct grinding and grinding tools
When the tool is used to achieve normal dullness, it must be re ground. After re grinding the hard alloy blade, it is necessary to grind oil stones into the cutting edge and tip to improve the service life and safety reliability of the tool.
Post time: Nov-26-2024
