Die casting can produce l parts with complex shape, clear outline and thin wall and deep cavity. Because molten l maintains high fluidity at high speed, l parts that are difficult to be processed by other processes can be obtained. Die castings require high dimensional accuracy, and can be assembled and used after a small amount of machining. Some die castings can be assembled and used directly. The material utilization rate is about 60% - 80%, and the blank utilization rate is as high as 90%. Die casting production efficiency is high. Due to the high-speed mold filling, the mold filling time is short, the l industry solidifies rapidly, and the operation cycle speed of die casting is fast. Among various casting processes, die casting method has the highest productivity and is suitable for mass production. Easy to use inserts. It is easy to set a positioning mechanism on the die-casting die, which is convenient for inlaying the insert and meets the local special performance requirements of the die-casting. All kinds of problems encountered in die-casting production technology, such as the selection of parting surface, the opening of gate, the layout of ejection, the mastery of shrinkage law, the assurance of accuracy, the types of defects and their degrees, are d on the advantages and disadvantages of the process of the die-casting parts themselves.

Die casting die management and maintenance specification 1. Purpose: Strengthen the management of die-casting die, ensure the normal maintenance of die-casting die, ensure the normal production and product quality of die-casting die, extend the service life of die-casting die and reduce costs. 2. Scope of application and responsibilities: All die-casting die management and maintenance of the company. Die casting workshop is responsible for the daily maintenance of molds; The mold repair personnel of the process department are responsible for mold maintenance and repair 3. Operating procedures: 3.1 the die-casting mold must be placed neatly in the specified area and position. 3.2 special personnel shall be responsible for the maintenance, repair and management of die-casting die. 3.3 acceptance of die casting die: 3.3.1 after the new die-casting mold is made, the die-casting mold shall be accepted by the die-casting mold acceptance team according to the technical conditions of die-casting mold. After passing the acceptance, it can be handed over to the workshop. The die-casting mold administrator shall count the gate sleeve, ejector rod, core and other die-casting mold spare parts, mark them and store them by classification. 3.3.2 when the die-casting die is transferred out or transported back to the workshop due to production needs, the die-casting die administrator should do a good job of handover and relevant personnel should do a good job of acceptance. 3.4 die casting mold Archives: After the acceptance of the die-casting die, a "die-casting die use and maintenance archive" must be established for regular inspection and proofreading. 3.5 die casting mold inspection: 3.5.1 for the die-casting die with cooling water, check the cooling water pipe of the die-casting die with tap water, and it should not be blocked or damaged. 3.5.2 check that the sliding block, ejector rod, guide post, etc. of the die-casting die should run smoothly without fracture and stagnation. 3.5.3 carefully check the die-casting mold cavity and parting surface, and the cavity and core are not allowed to have bumps and foreign matters; Aluminum (copper or zinc) slag and dirt are not allowed on the parting surface and exhaust slot. If any, it must be cleaned up. 3.5.4 check the ejector pin push plate and ejector pin fixed plate of the die-casting die. The connection must be firm, and the thread of the pull rod hole on the ejector pin push plate must be intact. 3.5.5 check that the ring screws of the die-casting die must not have cracks, and the ring screws must be firmly connected with the die-casting die. 3.5.6 when closing the die-casting mold, ensure that the reset rod is flush with the parting surface and the core is inserted in place. 3.6 maintenance of die casting mold: The maintenance of die-casting die is divided into daily maintenance and periodic maintenance Daily maintenance is mainly to clean the aluminum slag and dirt on the outer surface of the mold. Periodic maintenance requirements are as follows: After the die-casting die is removed, the die-casting worker must lift it to the designated position for placement, and the die-casting die repairman shall carry out the following maintenance. a) Clean the aluminum (copper or zinc) chips and dirt on the die-casting die (including slider, cavity, core, exhaust system, etc.) to ensure that the die-casting die is clean and the exhaust is unobstructed. Clean the aluminum part and polish it. b) Clean the oil on the mold and cooling water pipe. c) Check the die casting die according to 3.5. d) Repair or replace the bent, cracked and broken cores and ejector rods. e) After each set of die-casting die is pressed and shot for about 10000 times, the scale of the cooling water channel of the die-casting die is removed with descaling agent to ensure the smooth flow of water. f) Each set of die-casting die passes through zinc alloy: about 30000 die times; Aluminum alloy: about 20000 mold times; Regrinding and polishing the surface, and nitriding treatment if necessary; g) Internal stress treatment must be carried out in the mold cavity of each set of die-casting die every 10000 mold times. 3.7 die casting mold maintenance: For the damaged die-casting mold, after the relevant personnel determine the repair plan, the die-casting mold maintenance personnel shall repair it in time. The repaired die-casting mold can be tested only after it is checked and confirmed to be qualified by the relevant personnel. Only after the pressure test piece passes the dimensional inspection (or trial processing and assembly), can the die-casting mold be confirmed to be normal and put into production. And make records. 3.8 maintenance and inspection of die casting mold: The die-casting die repairman must regularly inspect the die-casting die once a month, and make records at the same time. When repairing or replacing the core at ordinary times, records should also be made.