A screw production process for screw components for injection molding machines

Abstract

The invention discloses a screw production process for a screw assembly of an injection molding machine, comprising the following steps: S1, ingredients: molybdenum carbide: 15-30 parts, tungsten carbide: 10-30 parts, chromium carbide Cr: 3 ~17 parts, nickel Ni: 5~20 parts, manganese Mn: 2~10 parts, iron Fe: 40~60 parts, copper Cu: 0.1~0.7 parts, iron boride FeB: 5~20 parts, silicon Si: 0.2 ~0.4 parts, modified phenolic resin adhesive 2~10 parts, aluminum: 5~20 parts; S2, mold making: according to the length of the alloy screw to be produced, it is necessary to select a pipe with a corresponding length to make a mold. In the present invention, the screw made of molybdenum carbide in the ingredients is more wear-resistant and corrosion-resistant, and has a longer service life. During the normalizing treatment, the normalizing treatment is adopted 2 to 3 times, so that the grains in the screw are refined and Uniform carbide distribution and increase hardness, improve processing performance, remove internal stress of materials, prevent deformation and cracking, thereby increasing the service life of the screw.

Description

technical field [0001] The present invention relates to the technical field related to injection molding machines, and more specifically, relates to a production process of a screw used for a screw assembly of an injection molding machine. Background technique [0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. Divided into vertical, horizontal, all-electric. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and make it inject and fill the mold cavity. The screw, the check ring gasket, the check ring and the screw head form the screw assembly of the injection molding machine, and the screw is an important part. Now Some screws have poor corrosion resistance and stress resistance, are easy to wear, and are prone to problems in the ...

AI Technical Summary

Problems solved by technology

The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and make it inject and fill the mold cavity. The screw, the check ring gasket, the check ring and the screw head form the screw assembly of the injection molding machine, and the screw is an important part. Now Some screws have poor corrosion resistance and stress resistance, are easy to wear, and are prone to problems in the working process, which affects the production progress. Therefore, we propose a screw production process for screw components for injection molding machines.

At present, the demand for polyvinyl chloride (PVC) injection molding products is gradually increasing. However, the conventional full-gradient screw used to form PVC injection molding products usually has a mediocre plasticizing effect. Modification and compounding of PVC to change the overall performance, but the defects of the screw itself in the PVC injection molding screw, such as: the heating process of the screw of the injection molding machine is continuously improved, and the traditional heating of the resistance wire screw has become an energy-saving and environmentally friendly machine for the injection molding machine. The bottleneck of equipment development. The slippage of the screw of the injection molding machine will cause material degradation. The screw is a key part of the injection molding machine and the extruder. (Such as carburizing, nitriding, etc.) There are various defects, which cannot effectively improve the performance of the screw