Precision injection molding needs to meet those aspects
1. It is the equipment for injection molding machine. The injection molding machine is the basis of injection molding. If the foundation is not good, it will not produce good products.
2, the manufacture of molds, the injection molding industry is inseparable from the mold, the mold with good performance can add a lot of points for precision injection molding.
3, injection molding operators, no injection molding engineer, no matter how good the equipment is futile.
4, the procurement of raw materials, the same kind of plastic, the process is different, resulting in different properties of plastic
In the process of manufacturing high-precision injection molds, it is necessary to fully consider the shrinkage rate of various rubber materials (such as: PC, PMMA, PEEK, etc.), product appearance and structural dimensions, product precision requirements, precision control of mold making, and injection molding. The production accuracy of the machine and other factors. Only when the above can be satisfied, the mold can be called a high-precision injection mold
Injection mold processing generally involves several processes such as forging, cutting, and heat treatment. In order to improve the manufacturing quality of the mold and save production cost, the material should have good forgeability, machinability, hardenability, hardenability and grindability; it should also have small oxidation, decarburization sensitivity and quenching deformation. Cracking tendency.
The injection mold has low hot forging deformation resistance, good plasticity, wide forging temperature range, and low tendency for forging, cold cracking and precipitation of reticulated carbide.
2, annealing processability
The spheroidizing annealing temperature range is wide, the annealing hardness is low, the fluctuation range is small, and the spheroidization rate is high.
3, cutting processability
Large cutting amount, low tool loss and low surface roughness.
4, oxidation, decarburization sensitivity
When heated at high temperature, the oxidation resistance is good, the decarburization speed is slow, and it is not sensitive to the heating medium, and the tendency to produce pitting is small.
Uniform and high surface hardness after quenching.
After quenching the injection mold, a deep hardened layer can be obtained, which can be hardened with a mild quenching medium.
7, quenching deformation cracking tendency
The conventional quenching volume change is small, the shape is warped, the distortion is slight, and the abnormal deformation tendency is low. Conventional quench cracking has low sensitivity and is not sensitive to quenching temperature and workpiece shape.
The relative loss of the grinding wheel is small, the grinding amount is large, and it is not sensitive to the quality and cooling condition of the grinding wheel, and it is not easy to cause abrasion and grinding crack.