Due to the low melting point of aluminum alloy and good casting performance, gravity casting is widely used in automobiles, motorcycles, motors, communications, hardware tools and other fields. Gravity casting products are widely used in our lives. High-quality products make our products more worthy of consumption. Trust, let's introduce the detection methods and advantages of gravity aluminum alloy casting.

Detection method of gravity aluminum alloy casting:

Gravity aluminum alloy casting usually adopts penetration inspection and coloring inspection. Penetration or spraying a highly permeable colored liquid on the surface of the casting, the penetrant penetrates into the opening defects, quickly wipes off the surface penetration layer, and then sprays an easy-to-dry color developer on the surface of the casting After sucking out the remaining penetrant in the opening defect, it is shown to be dyed, which can reflect the shape, size and distribution of the defect.

If there are defects on the surface of aluminum alloy casting castings, the electrical characteristics of eddy current will be distorted, so that the defects will be detected. The main disadvantage of eddy current testing is that it cannot directly display the size and shape of the detected defects, and can only determine the position and depth of the defect surface. In addition, the detection of small openings on the surface of the workpiece is not as sensitive as penetration testing.

Advantages of Gravity Aluminum Alloy Casting

Aluminum alloy casting with its incomparable advantages, such as corrosion resistance, is widely favored by users, especially since the lightweight of automobiles, casting aluminum alloy castings have been widely used in the automotive industry.

The density of aluminum alloy casting is lower than that of cast iron and cast steel, but higher than the strength. Therefore, aluminum alloy castings can reduce the weight of the structure, so aluminum alloy castings are widely used in aviation industry, power machinery and transportation machinery manufacturing.

Aluminum alloy has good surface luster and good corrosion resistance in the atmosphere and fresh water, so it is widely used in the manufacture of civilian utensils. Pure aluminum has good corrosion resistance in oxidizing acidic media such as nitric acid and acetic acid. Therefore, aluminum castings have certain applications in the chemical industry. Pure aluminum and aluminum alloy have good thermal conductivity. Heat exchange devices used in chemical production, as well as cylinder heads, pistons and other parts with good thermal conductivity of internal combustion engines, are also suitable for aluminum alloy casting.

Properties of Gravity Aluminum Alloy Casting

In the process of gravity aluminum alloy casting, due to the complexity of the casting shape, the casting molds of the products are also different. Even if the same part adopts different casting processes, the mold forms are often different. However, gravity aluminum alloy casting has its commonness when using gravity aluminum alloy casting. Gravity aluminum alloy casting needs to choose an appropriate casting process. The quality of its casting process is directly related to the casting quality and process productivity.

Some domestic mold manufacturers have begun to use solidification simulation to assist the casting process. Through the computer simulation of the filling solidification process, it is very important and effective to find and overcome the hot-stick aluminum alloy castings that are prone to casting defects, which is very important and effective to improve the reliability of aluminum alloy casting process design and effectively prevent unnecessary rework during the debugging process.