Solution of Surface Bubbles in Die Casting Aluminum Alloy

Release time:

2024-02-29

Features:

The surface of the casting has a cavity formed under the raised skin of rice grain size.

Cause:

① The filling of alloy liquid in the pressure chamber is too low, which is easy to generate coil gas and the injection speed is too high; ② The mold is not exhausted; ③ The melt is not degassed and the melting temperature is too high; ④ The mold temperature is too high, the metal solidification time is not enough, and the strength is not enough, and the mold is opened prematurely to push out the casting, and the pressurized gas expands; ⑤ Too much mold release agent; ⑥ The inner gate is poorly and the filling direction is changed.

Processing method:

① Change the diameter of the small pressure chamber to improve the fullness of molten metal; ② Extend the injection time, reduce the injection speed in the first stage, and change the switching point between low-speed and high-speed injection; ③ Reduce the mold temperature and maintain thermal balance; ④ Add an exhaust tank and an overflow tank to fully exhaust and remove oil stains and wastes on the exhaust tank in time; ⑤ Adjust the melting process and carry out degassing treatment; ⑥ Prolonging the mold retention time; ⑦ Reduce the dosage.

Solution of shrinkage cavity and shrinkage porosity of die-casting aluminum alloy

Deformation Solution of Die Casting Aluminum Alloy

"Die Casting Weekly"-On June 2, 2022, Zhejiang Tianya Jiangtao Power Co., Ltd. ("Tianya Jiangtao") and Lijin Group Ningbo Lijin Technology Co., Ltd. ("Ningbo Lijin Technology") jointly held a signing ceremony for batch purchase of large die casting units and strategic cooperation. It is reported that Tianya Jiangtao will introduce 10 sets of 1250-6000T large intelligent die casting units from Ningbo Lijin Technology. Tianya Jiangtao Chairman Hu Ronghui, Vice President Zhao Hongfu, Factory Director Peng Wenjiang, Ningbo Lijin Technology General Manager Zhang Jun, Sales Director Zhou Kang and other leaders attended the signing ceremony.

What are the causes of direct defects in aluminum die castings?

After the completion of the production of aluminum die castings will appear some small defects such as bubbles, cracks and deformation and other phenomena, affecting our use, so what is the direct cause of these defects!

China's aluminum alloy die casting production continues to rise

In recent years, the output of aluminum alloy die castings in China has been rising, and the industry has developed rapidly, which is mainly due to the continuous casting orders in China, and the casting industry in China has also begun to be recognized and praised by foreign enterprises.

China will vigorously support the development of domestic die-casting and foundry industry

China's mechanical castings are in rapid development, with the slogan of the road of innovation advocated by our country, the continuous development of casting technology, and strive to occupy the independent research and development of technology and the right to use, in order to really lay a good foundation for the development of China's casting industry.