A new line of stainless-steel ejectors is designed for use where traces of oxidation can cause impermissible contamination of parts for medical, food-contact, or other sensitive uses. The new Z413 ejector from Hasco America Inc., Fletcher, N.C., has a high chrome content (16% to 18%), which prevents corrosion and makes the ejector pin extremely long-wearing. Some polymers release gases during processing that can have a corrosive effect. Mold inserts are generally made of corrosion-resistant chrome steel, but ejector pins are usually made of hot-work steel, which is not corrosion resistant. The new Z413 ejector pin has a longer life expectancy than conventional pins, so it helps reduce downtime and maintenance work. Dimensions and tolerances conform to DIN ISO 6751. The ejector pin is offered in stock diameters from 2 to 10 mm.
Editor PickINJECTION MOLDING: Larger Pressurized Hopper For New Physical Foaming Process
Bigger parts can now be foamed by impregnating pellets with nitrogen gas in the hopper.