Can a metal part be press fit into BASF Plastics?
Yes, the press fit must be calculated for each material while understanding the required overall temperature profile conditions. A more flexible resin will not need to be heated (or have the insert heated) before a press-fit can occur. The degree of allowable press (or interference) depends on the material used. Reinforced materials can accept higher stress levels, have a higher gripping force, and would creep less than the unreinforced resins, thus retaining the grip for a longer period. The unreinforced resins will have the tendency to creep more, so the grip on the metal component will reduce faster with time. For nylon, calculations are required for both the dry-as-molded (DAM) and 50% Relative Humidity state. The DAM is a check for early assembly failures, while the 50% RH is for longer term gripping force.
