Clean up the metal shovel and dirt all over the mold, showing the true color of the mold.Refer to the last die-casting product sent with the mold for repair, and carefully check the problems with the mold. Are there any strains, mold sticking, pinching, meat loss, small core bending or breaking, whether the movable core is inserted and positioned incorrectly, whether there is a broken push rod or the length of the push rod has changed, and whether the insert positioning Whether there are loosening bolts. Determine repair or replacement based on damage.
For cavity collapse, cracks, and falling blocks that cause slight strain on the casting, local welding repair can be performed. The welding repair should be strictly performed according to the welding repair process, otherwise a lot of mold life will be lost. Smaller molded parts are more serious or die damaged.The forming surface of the larger forming part is severely collapsed, cracked, and dropped, which can be repaired locally. Welding repair should be strictly performed according to the welding repair process, otherwise a lot of mold life will be lost. Smaller molded parts are more serious or die damaged.
The sliding parts such as the core-pulling mechanism and the guide device should be thoroughly cleaned, carefully checked and repaired. Relubricate with high temperature grease and assemble.If there is a hydraulic core, the hydraulic part and the mold are repaired at the same time. Special attention should be paid to the cleaning of the hydraulic part to prevent pollution, otherwise the hydraulic system of the die casting machine will be polluted.
When the mold fails or is damaged during the production process, the repair plan should be determined according to the specific situation. If necessary, perform comprehensive repairs as described above.After completing the maintenance of the mold, rust-proof the molding surface, parting surface and mounting surface, close and fix the mold, and place it on the pad according to the installation direction of the mold on the machine. The mold attachment is placed with the mold.