*Plastic material: ABS + PC
*Plastic injection moulding part for machine- working part
Why metal instert easily break away from the plastic part and solution?
In the molding process, internal-stress forms when hot melting plastic material meet with cold metal insert, with bonding strength drops, metal insert is easy to break away from the plastic part.
Solution: In molding proess, let the metal insert go through pre-heating treatment
*this old picture shows Dennis standing at tooling workshop before