1. Basic Operation Standards for Cold Mold Startup
The mold in the cold mold state, to brush more oil, less spray. When the mold temperature reaches the technical requirements after the normal spray coating. Then the two blocks and pressurized gradually open, and according to the normal process of production.
2.Low-Pressure Pre-Production Debugging Process
Mold in the case of no preheating to low-pressure production, and the production parameters on the machine must be reduced or closed to zero (remember: do not open fast injection to prevent mold run and stick).Every production of a mold to brush the oil or demoulding paste, to prevent the cold mold adhesion with material phenomenon (aluminum temperature had better reach 680℃ above, so the mold temperature rise faster).Low pressure production of about 30 molds, with the exhaust device and injection in each mold to close the exhaust valve in time, at the same time to observe the normal operation of the active parts, and then debug the production parameters of the machine until the production of qualified products and extraction of finished products.In the die casting production, it is found that the gate and the casting parts have the phenomenon of aluminum sticking pull caused by impact.If there is running material, should be cleaned up in time, otherwise the more tight the pressure, the more difficult to clean up.
3. Cold Mold Production Inspection & Formal Production Switching Standards
After completing low-pressure trial production and parameter debugging, conduct comprehensive inspection on casting appearance, internal porosity and surface finish. Operators need to continuously monitor mold temperature changes and keep the release agent coating uniform and moderate to avoid insufficient lubrication or residual oil gas defects. When the mold temperature is stable within the standard production range, no sticking aluminum, flash, pulling and other abnormal defects appear in continuous 50 qualified castings, and all mechanical moving parts operate smoothly without jitter or stalling, the production line can be officially switched to normal high-efficiency mass production mode.
