As an excellent alloy material, cemented carbide has a very important position in the field of industrial manufacturing, known as "industrial teeth". Cemented carbide is indispensable for the production of turning tools,
Drill Bits, boring tools and other tool materials, as well as the processing of high manganese steel, stainless steel, heat-resistant steel and other materials. How is cemented carbide applied in practice? Today, mainly takes you to understand the types and choices of cemented carbide bits.
There are mainly three kinds of cemented carbide bits: integral cemented carbide bit, cemented carbide indexable blade bit and replaceable head cemented carbide bit. Among them, the integral cemented carbide has a wide variety, has centering function, can be reused and can control the processing cost. The carbide indexable blade has the advantages of complete types of bits, convenient tool change and no centering function. Replaceable cemented carbide bits also have centering function, complete types, high machining accuracy and efficiency, and the cutter head can also be reground.
Although cemented carbide has the advantages of wear resistance, corrosion resistance and high hardness, when the cemented carbide bit is drilling, the workpiece torque is large, and the thermal expansion and cold contraction phenomenon is easy to cause the bit to break in the hole. What should we pay attention to when using cemented carbide bits to avoid this situation?
1. When the strength of the bit is acceptable, reduce the width of the transverse edge to avoid the loss of the bit by axial force.
2. Different drill bits and cutting speeds should be selected for different materials.
3. When drilling materials with severe surface hardening, try to avoid friction on the cutting surface and large bit loss.
4. When cutting workpiece materials, pay attention to the use of cutting fluid, use it in time and keep it lubricated.
5. Fine use of special high-performance alloy blade can reduce tool breakage and maintain good wear resistance
