Cooling system

The cooling system is also known as the mold temperature adjusting system.Importance to adjust the mold temperature: Mold temperature plays an important role in determining the quality and molding cycle of a plastic product. (1). The fluctuation of mold temperature greatly influences the shrinkage rate, dimensional stability, deformation, stress cracking and surface finish of the final...
sprue bushing
Locating Ring Design Shape & Size: The locating ring is usually designed in two shapes, i.e., type A (Fig. 3-1) and type B (Fig. 3-2). Type A is usually applicable to the type B sprue bushing, see Fig. 4-3, while type B is usually applicable to the type A sprue bush, see Fig. 4-4....
mold venting for runners
Sources of air in the Mold Air trapped in the cavity and the gating system; the moisture contained in the plastic material is evaporated into gas under the injection temperature; the gas generated by plastic decomposition; the gas generated by the volatilization or chemical reaction of certain additives contained in the plastic; the gas generated by the...
Mold spring
Mold Spring Specs The rectangular-sectioned mold spring (mold spring for short) is mainly applied to stamping dies, metal die casting molds, plastic injection molds, and structurally sophisticated mechanical equipment. Mold spring is mainly made of 50CrVA, which features a small installation volume, outstanding elasticity, strong rigidity, high precision, a rectangular material...

The Mold Steels

Usually, the mold steel choices include Swedish 8407 and S136; American 420 and H13; European 2316, 2344 and 2083 and Japanese SKD61. For strongly corrosive plastics, S136, 2316 and 420 steels are usually chosen. In addition to S136, 2316 and 420 steels, low corrosion plastics can also choose SKD61, NAK80, PAK90 and 718M steels.mold steel also has...