plastic chain link
THE NEED FOR PLASTIC CHAIN-LINKS Many products made out of traditional materials like wood, metal and ceramic had to be replaced, to be made out plastics. ... The chain links that are commonly made out of metals have the following draw-backs: 1) Poor corrosion resistance 2) Need secondary operation such as welding 3) Heavy in weight 4) Lead time is high The above-mentioned problems can be eliminated if plastic materials are to be used for the chain-links. ... The first step was to measure the various dimensions of the existing metal chain-link. Once all the dimensions were known, the dimension that is required for the plastic chain-link had to be decided. ... The Process plan for the mould is as follows: Product : Chain Mould steel : Hot die steel Operation I : Rough milling Operation II : Cutting Operation III : Rough milling Operation IV : Fine milling Operation V : Grinding Operation VI : Profile milling Operation VII : Sprue and gate machining Operation VIII: Drilling Since single piece of raw material was after the first operation of raw milling, the piece had to be cut into four single pieces using power hacksaw.