Problems in quality control of aluminum die castings

Problems in quality control of Dalian aluminum die castings

China's die casting industry continues to develop and apply new technologies and materials, which can be seen everywhere in life. The production characteristics of aluminum die castings determine their production, management, die casting and other technological levels. If the control is not good, the scrap rate of die casting will be high, which will cause a waste of human, material and financial resources, and seriously affect the economic benefits and product quality. How to control the quality of aluminum die castings?

Problems in quality control of aluminum die castings

1. control raw materials.

In order to ensure the die casting quality and improve the product qualification rate, the quality of raw materials shall be strictly controlled. Usually, the chemical composition of the main elements of the alloy shall be determined through each incoming sampling inspection, and then the chemical composition of aluminum, zinc, magnesium, copper, iron and other chemical components shall be strictly controlled according to the influence of the elements in the alloy on the die casting, processing, surface treatment and other subsequent processes.

2. mold quality control.

The quality of aluminum die casting is directly related to the structural design of the die. For example, the internal gate should ensure that the alloy melting has appropriate flow, flow and pressure; The overflow groove shall be designed to ensure that the metal can fill the mold cavity, so as to reduce the casting defects, such as casting defects, looseness, shrinkage cavity, etc; The exhaust tank shall be designed to exhaust smoothly. Only when the die structure is designed, the quality and production efficiency of aluminum die castings will not be affected.

Therefore, the quality of aluminum die castings must attach importance to raw materials and molds. Only by controlling the quality from these aspects can we obtain good die castings.