Cemented carbide welding blades are relatively common metal cutting tool blades on cutting machine tools, and are generally used on turning tools and milling cutters.
Nine points of use of cemented carbide welding blades:
1. The structure of the welded cutting tool should have sufficient rigidity. Sufficient rigidity is guaranteed by the maximum allowable external dimensions, and the use of higher-strength steel grades and heat treatment.
2. The cemented carbide blade should be fixed firmly. The cemented carbide welding blade should have sufficient fixation and reliability. It is guaranteed by the knife groove and welding quality. Therefore, the insert groove shape of the blade should be selected according to the shape of the blade and the geometric parameters of the tool.
3. Carefully check the cutter bar. Before welding the blade to the cutter bar, it is necessary to check the blade and the cutter bar. First, check that the blade supporting surface cannot be severely bent. The cemented carbide welding surface must not have a serious carburized layer, and at the same time The dirt on the surface of the cemented carbide blade and the insert groove of the tool bar should also be removed to ensure reliable welding.
4. Reasonable selection of solder. In order to ensure the strength of the soldering, the appropriate solder should be selected. During the soldering process, good wettability and fluidity should be ensured, and air bubbles should be eliminated, VCMT Insert so that the soldering and the alloy soldering surface are fully contacted, and there is no lack of soldering.
5. The correct choice of welding flux is recommended to use industrial borax, which should be dehydrated in a drying furnace before use, then crushed, sieved to remove mechanical debris, and set aside.
6. When using mesh compensation gaskets for welding high-titanium and low-cobalt fine-grain alloys and welding long and thin alloy blades, in order to reduce welding stress, it is recommended to use a thin sheet with a thickness of 0.2-0.5mm or a mesh diameter of 2-3mm The mesh compensation gasket is welded.
7. Correctly adopt the sharpening method. Because the carbide blade is brittle and sensitive to crack formation, the tool should avoid overheating or rapid cooling during the sharpening process, and at the Deep Hole Drilling Inserts same time, choose a suitable grit grinding wheel and a reasonable grinding process , To avoid sharpening cracks and affect the service life of the tool.
8. Correctly install the tool. When installing the tool, the length of the tool head extending from the tool holder should be as small as possible, otherwise it will easily cause tool vibration and damage the alloy sheet.
9. Correct regrinding and grinding of the tool. When the tool is used to achieve normal bluntness, it must be regrinded. After the regrind, the cutting edge and the round corner of the knife must be grinded with oilstone, which will increase the service life of the tool and Safety and reliability.
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