1. Ensure that the mold is normally and firmly installed on the die-casting machine, the ejection position of the ejector plate must be balanced in force, use at least 3 ejector rods, and cannot be deflected

2. The clamping force can be adjusted up to 85%, and it is not allowed to be too large. If the clamping force needs to be adjusted during production, the magnesium skin and other dirt on the parting surface must be thoroughly cleaned.

3 Adjust the ejection distance so that the casting can be easily removed. Try to avoid the use of vibration to take the parts. Adjust the ejection distance to expose the sprue sleeve 20-30MM, so that the ejection head can be sprayed and injected. The head is cooled and lubricated to reduce the cracking and jamming of the cake

4. Adjust the injection force according to product requirements, and increase the injection force appropriately for products that require high compactness.

5. Adjust the speed of opening and closing molds. The speed of the molds with sliders and inclined guide posts should be appropriately slowed down, and the molds with inserts should also be slowed down as much as possible; the electronic ruler of the equipment should be adjusted to ensure that the After the blocks are accurately docked, fast high-pressure mold clamping is performed

6. The cooling time is pre-set according to the wall thickness and structure of the product. If there is a sticky mold strain, it can be appropriately extended; if there is a crack or the holding force is too large, it can be appropriately shortened

7. The temperature of the alloy liquid must meet the molding requirements. Products with internal compactness requirements are generally not less than 680 degrees Celsius, and it is better to control it at 680-700 degrees Celsius. Thorough refining must be carried out before production.

8. Prepare the release agent according to the product structure. The ratio of the release agent should not be too thick, about 1:120 is better, and the spray gun atomization effect is better.

9. After the mold is installed, the process parameters must be adjusted for at least one air pressure injection cycle (the high-speed valve and the booster valve must be closed at this time), and observe whether the actions are normal and flexible, especially whether the core-pulling position is Can be accurately returned to the position, whether there is any misalignment between the inclined guide post and the slide guide post hole when the mold is closed

10. Bake and heat. Before baking, apply high-temperature grease to the mold cavity and sliding matching parts (guide post, guide sleeve, slide way, push rod, reset rod, oblique guide post, shunt cone sprue sleeve, etc.); use blowtorch flame The outer flame heats the mold, moving slowly and evenly heating. Do not bake a certain part for a long time. Do not bake the small core or thin part until it turns red. Bake the sprue sleeve part until the surface temperature of the mold cavity It reaches 200 degrees Celsius and can then be produced.

11. After taking over, the production follows the principle of slow pressure first and then fast pressure. Especially for the molds with large flashes that were previously opened, first turn off the high speed and pressurization, and increase the slow speed appropriately. When the mold temperature is basically suitable for the fast injection conditions, the high speed will be gradually opened up when the slow injection is 3-5 times. , After opening the pressurization to ensure that the internal quality of the product is qualified. Note that after the injection parameters are adjusted, at least two products can be made before they can be adjusted again according to the product molding situation.

12. Pay attention to the protection of the mold during the production process. The parting surface exhaust duct and the slider slide must be cleaned every time to ensure that there is no flash and other dirt.

13. Focus on spraying for deep cavities and parts with more complex structures to prevent product strain or mold retention

14. Make a record, and make a detailed record of the product molding situation, process parameter adjustment situation, problems that occur and how to solve them in each shift, for future reference.