How to Design The Assembly Parts and Blot the Plastic Parts Together? Posted on : April 27, 2022 By GREFEE Plastic assembly parts and assembly parts Common plastic parts usually are made by injection molding or 3D printing. These two methods usually need to assemble two pieces to multi-piece together to form the products that can …
Polishing Methods and Procedures of Die Casting Molds Posted on : April 26, 2022 By GREFEE The polishing in the die casting industry is different from that in the other industries (such as aluminum alloy die casting, zinc alloy die casting, and magnesium alloy die casting). Strictly speaking, the polishing should be called mirror finishing， which …
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How to select the right hot runner types for injection molding dies Posted on : Apr18, 2022 By GREFEE The hot runner technology brings a revolutionary change into the mold market. More and more customers choose hot runners. The spread of this technology increases the pass rates of production and quality of products. It also minimizes …
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The Calculation Formulas for Injection Molding Posted on: March 23, 2022, By GREFEE Part 1 Clamping tonnage F (TON) Formula: F=Am*Pv/1000 Clamping tonnage: TON Am: Mold Cavity Projected area: CM2 Filling Pressure： KG/CM2 Generally, the plastic material filling pressure range is 150-350KG/CM2) Good flowability takes bottom values, poor flowability takes top values. Injection …
Mold design Tips – Two-Stage Ejecting Structure Posted on : March 24, 2022 By GREFEE Generally, when taking the product out from the mold, no matter it applies a single or multi-parts ejecting structure, the ejection should be finished once. However, due to the specific shaped products or requirements of volume production, a two-stage ejecting structure makes …