1. Preparatory work before the die casting machine is installed on the mold: Adjust the position of the wall plate ejector according to the size of the rear roof, ensuring that the ejector pin parallels( If not, the ejector will be broken and scuffed), and keep the working surface clean.
2. Mold must be compressed after installation, to avoid loosening in the production and resulting in a drawing die.
3. Connect the cooling water and turn it on before production. All active parts should be filled with oil to keep the parts lubricated; The ejector pin should be of medium length to ensure that the product can be successfully removed. The length can’t be too long, or the ejector will be scuffed and broken because of overload. Check the plunger, making sure it’s not too long.
4. Try to minimize the firing temperature of aluminum liquid under the premise that it does not affect the quality of products, generally between 630℃-650℃. If the temperature is too high, it will increase erosion. It can easily cause flying materials, flash, and fried material, which have a direct impact on the life of the mold; Conversely, if the temperature is too low, it is not conducive to molding.
5. Preheat the mold before die casting, making sure the mold reaches the temperature of 180℃-260℃. 10-20 minutes before starting up, inject at a low speed to achieve the purpose of slow heating.
6. In the case of meeting the demand for molding, try to use a relatively low-speed injection and a high-speed injection. If the filling speed is too high, it will cause sticky mold, erosion, and cracking.
7. During the die-casting operation, spraying form release agents evenly can reduce the sticky mold and wear of the mold core. To prevent mold from chilling effect, the water-based release agent should be preheated to 20℃-30℃. In addition, the ejector pin should be sprayed after its ejection to prevent it from reciprocating motion.
8. Clean up the excess material on the surface of the mold in time. Eliminate the gap after clamping and prevent flying material. Eliminate the nonuniform force of the mold core and sliding block to prevent the mold core from crushing and bursting. Lubricate the ejector and all active parts regularly.
9. Terminate the production immediately if you hear an abnormal sound from ejection during the production. Cut off the machine power supply and guarantee the last product. Notify the professional maintenance master in time and analyze the reasons for the products which is reserved in advance. Check the parts of the mold, and repair it in time if there are problems; Do not produce without repair.
10. You’d better not spray die-release agents after the last mold when you halt production. After die cooling, wipe the debris on the subsurface. Oil in time to prevent the mold from rust. The high temperature produced by die casting will have carbonation on the punch oil and mold release agent. So service it in time if you halt production for a long time. Clean up carbide on the mold core to prevent it from erosion; Do not affect the size and accurate reading during maintenance.
NINGHAI SAI YUE METAL PRODUCTS CO.,LTD
Phone: +86-15088690602
E-mail: [email protected]
Address: No. 26 Jinshan 5th Road, Ninghai County, Ningbo City, Zhejiang Province
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