How a tungsten steel rod transforms into a milling cutter

How a tungsten steel rod transforms into a milling cutter

Transforming a tungsten steel rod into a milling cutter requires a series of complex and precise processing techniques. The following are the main processing steps from tungsten steel rod to milling cutter:

Design: Based on the usage requirements and tool specifications, design the shape, size and structure of the milling cutter. This includes determining parameters such as the diameter, length, number of cutting edges and helix angle of the milling cutter.

Material selection and preparation: Select the appropriate tungsten steel material to ensure its quality meets the requirements. Tungsten steel has high hardness, high wear resistance and good heat resistance, making it an ideal material for manufacturing milling cutters. Inspect and pre-treat the tungsten steel rods, such as cleaning and removing surface impurities, to guarantee the processing quality.

Cutting and Forging: According to the design requirements, tungsten steel rods are cut into the appropriate length and shape using cutting equipment. For some complex milling cutter shapes, the forging process may be required to form them. During the forging process, it is necessary to control the temperature and pressure to avoid cracks or deformation of the material.

Milling processing: Use CNC milling machines or other milling equipment to perform rough and finish machining on tungsten steel. During rough machining, remove most of the allowance to form the basic shape of the milling cutter; during finish machining, ensure the dimensional accuracy and surface quality of the milling cutter. During the milling process, select appropriate tools and cutting parameters to avoid tool wear and workpiece damage.

Heat treatment: After processing, the milling cutter undergoes heat treatment to enhance its hardness and toughness. The heat treatment process includes quenching, tempering, etc. The specific process parameters should be determined based on the tungsten steel material and the usage requirements of the milling cutter. After heat treatment, the milling cutter also needs to undergo cooling treatment to eliminate internal stress.

Grinding process: Use a grinding machine to grind the cutting edge of the milling cutter to make it sharp. During grinding, the grinding amount and grinding speed should be well controlled to ensure the quality and service life of the cutting edge. At the same time, other parts of the milling cutter should also be ground to meet the requirements of dimensional accuracy and surface roughness.

Coating treatment: To enhance the wear resistance and corrosion resistance of milling cutters, coating treatment can be applied to them. Common coating materials include titanium nitride and titanium carbide, etc. Coating treatment can form a hard film on the surface of the milling cutter, thereby extending its service life.

Inspection and quality control: Conduct a comprehensive inspection of the completed milling cutters, including checks on dimensional accuracy, surface quality, hardness, and other aspects. Only after ensuring that the quality of the milling cutters meets the standard requirements can they be packaged and dispatched from the factory.

In conclusion, for a tungsten steel bar to be transformed into a milling cutter, it must go through multiple processes. Each stage is closely linked and influences one another. Every step is crucial to the final quality and performance of the milling cutter. Only by strictly controlling each stage can high-quality milling cutter products be manufactured.