To give corrosion resistance to metal surfaces by using glass. There are two types: shrink-fit and enamel. In the former, a glass container is fitted into a metal container and heated in a furnace to about the softening point of the glass to line the inside, so that the glass and metal walls are in close contact and there is almost no risk of pinholes. In the latter, a glaze containing 60% or more silicate SiO2 is used, and it is baked at a higher temperature than ordinary enamel. Both types are used for chemical equipment that requires corrosion resistance. → Related items Metal surface treatment Source : Heibonsha Encyclopedia About MyPedia Information |
ガラス質を用いて金属表面に耐食性を与えること。焼ばめ式とホウロウ(琺瑯)式がある。前者は金属容器内にガラス容器をはめ込み,ガラスの軟化点程度に炉内で加熱して内張りするもので,ガラスと金属壁とが密着しピンホール(小孔)の心配がほとんどない。後者の場合には,釉(うわぐすり)にケイ酸SiO2を60%以上含むものを使用し,普通のホウロウより高い温度で焼き付ける。いずれも耐食性を必要とする化学装置などに利用。 →関連項目金属表面処理 出典 株式会社平凡社百科事典マイペディアについて 情報 |
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