Long Holes Often Appear On The Surface After The Production Of Die-cast Aluminum

Die-cast aluminum parts are actually die-cast parts manufactured by a die-casting machine. In the process of manufacturing die-cast aluminum, we will first heat liquid metal aluminum or metal aluminum alloy. After heating, we can pour them into the feed port of the machine. After the production of die-cast aluminum is completed, long holes often appear on the surface.

Because aluminum and aluminum alloys have good fluidity and plasticity, and the casting process is cast in a pressure die-casting machine, die-cast aluminum can be made into various more complex shapes and can also have higher precision. The machining volume of the castings and the casting allowance of metal aluminum or aluminum alloy not only save electricity and metal materials, but also greatly save labor costs.

Therefore, die-cast aluminum is widely used in various industries such as automobile manufacturing, internal combustion engine manufacturing, motorcycle manufacturing, motor manufacturing, oil pump manufacturing, transmission machinery manufacturing, precision instruments, landscaping, power construction and architectural decoration. Aluminum and aluminum alloys have excellent thermal conductivity, small specific gravity and high workability.

During processing, defects such as trachoma may sometimes appear. In order to avoid pores and trachoma in the production process of die-casting aluminum, it is summarized as follows: In order to ensure the quality of refining and degassing of aluminum alloy smelting, refining and degassing agents are selected to reduce the gas content in the aluminum water, and the liquid surface scum and bubbles are removed in time. Oxide, and prevent gas from entering the die casting again.

Choose a good release agent. The selected release agent should not generate gas during the die-casting process, and has good release performance; ensure that the exhaust of the mold is unimpeded, the exhaust is smooth, and the gas in the mold is completely discharged, especially the aluminum water polymerization place The exhaust channel must be unblocked; adjust the die-casting parameters, and the filling speed should not be too fast to prevent gas generation.

In product design and mold design, attention should be paid to the use of core drawing and cooling to greatly reduce the shortcomings of excessive wall difference; pores often appearing in fixed parts should be improved by mold and design. To sum up, in the die-casting industry, if the above six measures are taken, the scrap rate of die-cast aluminum can be significantly reduced, thereby greatly improving the pass rate of products.