China Aluminum Network companies typically have established internal quality control standards, ensuring that ingots or billets are thoroughly inspected before being passed to the next stage of production. The main inspection areas include analyzing the final chemical composition of the ingot, checking dimensional tolerances, and examining surface appearance. In addition, internal quality assessments are conducted, covering tests for hydrogen content, slag content, oxide purity, as well as high- and low-magnification inspections. Other methods such as ultrasonic testing, water immersion inspection, and electronic scanning analysis are also used to evaluate the internal structure of the ingot, with acceptance criteria based on the severity of any internal defects.
Casting quality is heavily influenced by the equipment, processes, and the skill of the operators. Therefore, maintaining strict process control is essential. The metallurgical quality, microstructure, and mechanical properties of the ingot can only be accurately assessed through advanced testing instruments. As a result, it's crucial for companies to continuously expand and improve their testing capabilities, ensuring effective quality control throughout the casting process and enabling timely feedback of inspection results.
Proper inspection and management of raw materials and auxiliary materials are equally important in the production process. This includes monitoring waste generated during manufacturing. Waste management should not be overlooked, as it is just as critical as managing finished products. If waste from one stage of production becomes mixed, it can significantly affect the reusability of returned materials, potentially leading to serious economic losses. Therefore, implementing strict waste control measures is vital to maintain product quality and operational efficiency.
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