Rapid Custom Manufacturing

Reaction Injection Molding Large Housing Parts

Reaction Injection Molding Large Housing Parts

Project Overview:

Manufacturing Process: Reaction Injection Molding (RIM), M6 Insert
Molding Material: Polyurethane PU (Hei-Cast 8636-75)
Tooling Material: Epoxy Resin, Silicone Rubber, Steel
Part Dimensions: 743 × 512 × 315 mm (thickness: 5/7/10/20 mm)
Quantity & Lead Time: 60 Units, 25 Days

This Engine Casing was originally manufactured by sheet metal fabrication with lots of bending and welding. To save production cost well, customer modified part design to have it Reaction Injection Molded. No shrink marks on the molded parts though thick and various wall thicknesses.
reaction injection molding tooling.jpgOur rapid and cheap RIM molds benefit from the Low-Pressure and Room-Temperature injection molding and Low-Viscosity of the molding material.
reaction injection molded part.jpgThe silicone rubber pieces of RIM molds were replaced by fresh ones after every 60-100 shots to keep consistent molding tolerance ±0.15/100 mm.
reaction injection molded covers.jpgSince the unique injection molding system, our RIM process worked fine for manufacturing the large and heavy parts with various wall thicknesses.
reaction injection molding shop.jpgSurface finishing raised certain labor cost to the parts, so our RIM was not suitable for mass volume production which undermined the mold benefit.
reaction injection molded enclosures.jpgWide surface finishing options were available for our RIM parts, such as:sandblasting, painting (color, gloss, texture), silkscreening, etc.
reaction injection molded housings.jpgRapid and cheap mold, Large size, Short run production, Excellent tolerance, Tough and durable parts, were the great features of our RIM process.
RIM molded large parts.jpgWe always paid high attention to packaging the parts well to ensure a safe and economical shipping though sometimes this was not an easy job.
We were the top professional Reaction Injection Molding supplier to provide high quality low volume manufacturing services quickly and economically.