INNER SURFACE CORROSION-PROTECTED CAST IRON PIPE AND MANUFACTURING METHOD THEREOF

To provide an easy manufacturing method of an inner surface corrosion protected cast iron pipe to be applied to composite lining painting of an inner surface of a cast iron pipe having a large nominal diameter such as a ductile cast iron pipe for an earthquake-resistant water tank, capable of conduc...

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Bibliographische Detailangaben
Hauptverfasser:	YANAGITANI HITOSHI, TSUTSUMI SHINPEI, NAKAMOTO KOJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide an easy manufacturing method of an inner surface corrosion protected cast iron pipe to be applied to composite lining painting of an inner surface of a cast iron pipe having a large nominal diameter such as a ductile cast iron pipe for an earthquake-resistant water tank, capable of conducting corrosion protection of the inner surface while preventing a blow hole from forming and suppressing pH rise of conducting water.SOLUTION: The inner surface corrosion-protected cast iron pipe is obtained by coating an inner surface of a cast iron pipe with a cement mortar layer 20 to form a primer coating 21, followed by applying multiple coatings thereto so that it is coated with multiple coatings 22 composed of a solventless epoxy resin paint.SELECTED DRAWING: Figure 7 【課題】耐震貯水槽用ダクタイル鋳鉄管のような呼び径の大きな鋳鉄管の内面の複合ライニング塗装において、ブローホールの発生を抑制し、内面防食を通水のｐＨ上昇を抑えながら簡便に行う内面防食鋳鉄管の製造方法の提供。【解決手段】鋳鉄管の内面をセメントモルタル層２０で覆い、プライマー塗膜２１を形成した後、複数回の塗工によって無溶剤型エポキシ樹脂塗料による複数層の塗膜２２で覆った内面防食鋳鉄管とする。【選択図】図７