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金属表面処理 熱亜鉛メッキ 前処理

2016-08-18View Original

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数日前、熱亜鉛メッキ部品を製造している亜鉛メッキ工場を見に行ったのですが、前処理工程がなく、酸洗いした後に廃酸タンクで廃酸に浸してそのまま亜鉛浴に入れるだけでした。これはどういうやり方なんでしょうか?廃酸をつけるのは何のため?下地処理をしなければ、亜鉛層の品質は保証できますか?

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