Carbide turning tool is made of carbide blade and carbon steel material tool rod welding, welding blade has high hardness, wear resistance and heat resistance, carbide blade is made of high wear and heat resistance of WC (tungsten carbide), TiC(titanium carbide), TaC(tantalum carbide) and Co(cobalt) powder sintered by high temperature.
Nine welding methods of carbide welding blades:
1, welded cutting tool structure should have enough rigidity enough rigidity is the largest allowable shape size and the use of high strength steel number and heat treatment to ensure.
2, the cemented carbide blade should be fixed firmly cemented carbide welding blade should have enough fixed robustness, it is guaranteed by the groove and welding quality, so according to the shape of the blade and the geometric parameters of the tool to choose the shape of the blade insert.
3, carefully check the knife rod.
Before welding the carbide blade to the tool bar, it is necessary to check the blade and the tool bar, and first of all, the blade supporting surface should not be seriously bent. The cemented carbide welding surface shall not have a serious carburizing layer, and the dirt on the surface of the cemented carbide blade and the insert of the tool bar should also be removed to ensure that the welding is solid.
4, reasonable selection of solder
In order to ensure welding strength, the appropriate solder should be selected. In the welding process, good wettability and fluidity should be ensured, and bubbles should be excluded, so that the welding and alloy welding surface are fully in contact, without welding phenomenon.
5, the correct choice of welding flux
It is recommended to use industrial borax, which should be dehydrated in the drying furnace before use, then crushed, screened to remove mechanical debris, and then used.
6, choose mesh compensation gasket
When welding high titanium and low cobalt fine particle alloys and long and thin alloy blades, it is recommended to use a thickness of 0 to reduce welding stress. Two -- zero. 5mm sheet or mesh diameter 2-3mm mesh compensation gaskets for welding.
7, the correct use of grinding method
Because the carbide blade is brittle and sensitive to crack formation, the tool should avoid overheating or quenching in the grinding process, and at the same time, the grinding wheel with appropriate particle size and reasonable grinding process should be selected to avoid grinding cracks and affect the service life of the tool.
8. Install the tool correctly
When installing the tool, 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, thus damaging the alloy sheet.
9. Regrind and grind the tool correctly
When the tool is used to reach normal blunting, it must be re-ground. After re-grinding the tool, it is necessary to grind the cutting edge and the rounded corner of the tool with a whetstone, which will improve the service life and safety and reliability of the tool.
