In order to improve the performance of injection molds, many manufacturers will process their injection molds appropriately. Injection mold processing refers to the processing of molding and blank making tools, as well as shear molds and die-cutting molds. However, in many cases, the completion of mold processing will also reflect processing defects, leading to a decrease in mold performance. How can we build mold processing defects? The following measures can be taken to address mold processing defects.

1. Reasonable selection and dressing of grinding wheels

The use of white corundum grinding wheel is better, as its performance is hard and brittle, and it is easy to generate new cutting edges, so the cutting force is small and the grinding heat is small. Use medium grain size in terms of grain size, and use medium soft and soft grinding wheels with coarse grain size and low hardness in terms of grinding wheel hardness. Good self excitation can reduce cutting heat.

It is very important to choose an appropriate grinding wheel during precision grinding. When machining hard alloys and materials with high quenching hardness, diamond grinding wheels with organic binders are preferred. Organic adhesive grinding wheels have good self grinding properties. During grinding, it is important to promptly trim the grinding wheel to maintain its sharpness. When the grinding wheel is passivated, it will slide and compress on the surface of the workpiece, causing surface burns and reduced strength.

2. Reasonable use of cooling and lubricating fluids

Utilize the three major functions of cooling, washing, and lubrication to maintain cooling, lubrication, and cleanliness, thereby controlling the grinding heat within the allowable range and preventing thermal deformation of the workpiece. Improve the cooling conditions during grinding, such as using oil immersed grinding wheels or internally cooled grinding wheels. Introduce cutting fluid into the center of the grinding wheel, which can directly enter the grinding area, exerting an effective cooling effect and preventing surface burns of the workpiece.

3. Minimize the quenching stress after heat treatment

Due to quenching stress and network carbonization structure, under the action of grinding force, the phase transformation of the structure is easily caused to cause cracks in the workpiece. For high-precision molds, in order to eliminate residual stress during grinding, low-temperature aging treatment should be carried out after grinding to improve toughness.

Several Practical Tips for Reducing Defects in Injection Mold Processing

Dongguan Pengjian Precision Plastic Co., Ltd. is located in Chang'an Town, Dongguan City. We adhere to the business philosophy of "customer first, honesty first, seeking truth and practicality, and success sharing", strive to explore and improve. We are now a professional manufacturer of precision mold design, manufacturing, precision mold parts processing, plastic injection molding, and electronic product assembly. After several years of rapid development, we specialize in connectors, relays, and automotive components, I have rich experience in the development and manufacturing of office equipment and other fields.