POM Granules wholesale white black color Polyoxymethylene manufacturer

(1) POM processing can not dry, the best in the process of preheating (80℃), the stability of the product size is good;

(2) The processing temperature of POM is very narrow (0 ~ 215℃), and the residence time in the barrel is slightly longer or the temperature exceeds 220℃. It will decompose and produce irritating formaldehyde gas;

(3) When the POM material is injected, the pressure holding pressure should be larger (similar to the injection pressure) to reduce the pressure drop. Screw speed can not be too high, the residual amount should be less;

(4) POM product shrinkage rate is large, easy to produce shrinkage or deformation. POM specific heat, high die temperature (80 ~ 100℃), the product is very hot when demoulding, need to prevent scalding fingers;

(5) POM should be formed under the conditions of "medium pressure, medium speed, low material temperature and high die temperature", and the mold temperature should be controlled when precision products are formed

(6) with high mechanical strength and rigidity;

(7) the highest fatigue strength;

(8) Good environmental resistance and organic solvent resistance;

(9) Strong repeated impact resistance, good electrical properties, good resilience, with its own lubrication, good wear resistance, excellent dimensional stability.