What are the common quality problems of 6061 aluminum alloy forgings?

When purchasing 6061 aluminum alloy forgings, you may encounter the following common quality problems:

Size deviation: The size deviation of 6061 aluminum alloy forgings may exceed the specified allowable range, resulting in incorrect installation or fitting of other parts.

Surface defects: Surface defects such as uneven surface, pits, bubbles, and oxide layers will affect the appearance and may affect its performance.

Cracks and inclusions: Cracks and inclusions in forgings are common quality problems, which can be caused by poor handling in the manufacturing process, material problems, etc.

Internal organization defects: The internal organization defects of forgings include holes, pores, inclusions, etc., which may reduce the strength and service life of the forgings.

Poor metal flow line: Poor metal flow line may lead to problems such as fatigue fracture during the use of forgings, especially in the case of large forces.

Chemical composition deviation from the standard: If the chemical composition of the forging does not meet the requirements of the standard, it may lead to reduced product performance or failure to meet the design requirements.

Unqualified heat treatment: heat treatment is an important link affecting the performance of forging, if the heat treatment process is incorrect or the quality control is not in place, may cause the hardness, strength and other performance indicators of forging do not meet the requirements.

Unqualified surface treatment: 6061 aluminum alloy usually requires surface treatment to improve its corrosion resistance and decorative effect. If the surface treatment process or coating quality is not qualified, it may cause the surface of the product to be easily damaged or the oxidation rate is accelerated. In order to avoid these quality problems, the procurement of 6061 aluminum alloy forgings should choose a reputable supplier with relevant production capacity and experience, and establish a strict quality control system and supervision mechanism, such as the development of clear technical specifications, incoming inspection, process monitoring and so on.