The processing methods of cemented carbide mainly include the following:
- CNC forming milling process: It is the main process method for processing molded parts such as plastic injection molds and die-casting molds. It is often used in high-speed milling and 4-5 axis linkage machining processes.
- EDM forming process: often used for general precision forming model cavity processing, and often used for precision processing of formed parts after forming milling to reduce the surface roughness value and reduce the workload of grinding and polishing.
- CNC and precision coordinate hole system processing technology: CNC coordinate hole system positioning and processing high-precision hole processing mode can achieve high-precision hole system processing.
- CNC, precision wire EDM processing technology: often used in the final processing of general die-formed parts, and also used in the pre-processing of high-precision molded parts.
- Precision forming and grinding processing technology: mainly used for precision forming processing of punch and concave die punch blocks.
- Extrusion forming process of mold cavity and precision casting process: The former is mainly used for simple shape and shallow cavity processing, while the latter is mainly used for the forming of medium and large concave molds such as automobile rolling mold concave molds.
- Cutting: It is one of the commonly used methods for blanking carbide rods, plates, and wires. For grooving or cutting below 1mm, ultra-thin diamond cutting discs are commonly used for processing.
- Turning: In the process of turning carbide parts, the hardness of the tool itself must be higher than the hardness of the workpiece being processed. When cutting carbide parts with hardness less than HRA90, BNK30 material CBN tools are generally selected for large margin turning, and the tools will not break or burn. When cutting carbide parts with a hardness greater than HRA90, CDW025 material PCD tools are generally selected or resin-bonded diamond grinding wheels are used for grinding.
- Milling: For the milling process of cemented carbide, according to customer needs, CVD diamond-coated milling cutters and diamond insert milling cutters can be provided for precision parts processing, which can replace electrolytic corrosion and electric spark processes to improve production efficiency. and product quality.
In short, the processing method of cemented carbide needs to be selected and optimized according to specific application scenarios and requirements.
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