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磁型铸造
met.
magnetic molding process
(【技】用磁丸代替砂丸的实型铸造,亦称磁型铸造。将一定强度的磁丸(铁丸或钢丸)填充于覆有薄层耐火涂料的泡沫塑料实体模样和型箱之间,用一定方向的电磁场将磁丸吸牢紧固,然后浇铸。泡沫塑料模样受热燃烧气化,液态金属取代泡沫塑料模样凝固而成铸件。铸件凝固后撤除磁场,磁丸松散,即可取出铸件。电磁铸造的优点是铸件晶粒细小,强度较高,磁丸可重复使用。)
railw.
magnetic mould casting
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