Several coating processes and selections thereof are introduced. Surface pretreatments of steel or iron components, aluminum or its alloy components and plastic components are discussed.
2
介绍了几种涂装工艺和涂装工艺的选择，讨论了钢铁件、铝及铝合金工件、塑料件的表面前处理工艺。
Surface pretreatments of steel or iron components, aluminum or its alloy components and plastic components are discussed.
3
介绍了钢铁件、铝合金及塑料件等工件涂装前的表面处理工艺，分析了前处理工艺对涂装效果的影响。
This article has discussed the pretreatment technologies for iron and steel, aluminum alloy and plastics and its influence on finishing results.
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