The counterweight iron is a process of obtaining a casting having a predetermined shape, size and performance after the metal is smelted into a liquid that meets a certain requirement and poured into a mold, which is cooled and solidified and cleaned. Counterweight iron is one of the basic processes of the modern machinery manufacturing industry. Counterweight iron is a kind of metal thermal processing technology that humans have mastered earlier. It has a history of about 6,000 years.
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