Casting process for side wall blank holder of automobile stamping die

• Main Authors: BAI MINGXUE, WEI KAIBAO, XU DAYI, ZUO CONGJUN
• Format: Patent
• Language: Chinese; English
• Published: 29.10.2021
• Subjects: CASTING; CHEMISTRY; FOUNDRY MOULDING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention provides a casting process for a side wall blank holder of an automobile stamping die. The width of the blank holder is shortened by 4 mm firstly, so that a follow-up blank holder opening is enlarged and can reach the standard size, then the inner sides of ejector rods are subjected to offset bonding firstly, then all the ejector rods are connected into a whole through ejector rod connecting plates, the follow-up blank holder opening is enlarged, the ejector rods can reach the standard position, the problem that the ejector rods incline in the production process and the casting cooling process can be solved, then casting forming is carried out, a flow gate of a top pouring type casting system guarantees balance of an overall temperature field of a model, stress relief annealing is carried out on the formed casting through a temperature curve of first heating, then heat preservation and final cooling, and finally the formed casting is detected to be qualified. The size standard of the casting mol