METHOD FOR PRODUCING PLUG FOR HEAT FORMED PIPE

• Main Authors: HIDAKA, YASUYOSHI, SHIMODA, KAZUHIRO, HIGASHIDA, YASUTO
• Format: Patent
• Language: English; French; Japanese
• Published: 24.10.2013
• Subjects: 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; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

There is provided a plug for a heat-formed pipe that includes a sprayed coating that is difficult to peel off. A method for producing a plug for a heat formed pipe according to an aspect of the present embodiment includes a step for preparing a plug having a sprayed coating including iron and an iron oxide formed on the surface, and a step for heat processing the plug at a temperature of 400 to 550 °C maintained for 5 to 60 minutes. L'invention concerne un bouchon pour un tuyau thermoformé qui comprend un revêtement pulvérisé difficile à peler. Un aspect du présent mode de réalisation concerne une méthode de production d'un bouchon pour un tuyau thermoformé constituée d'une étape de préparation d'un bouchon avec un revêtement pulvérisé comprenant du fer et un oxyde de fer formé sur la surface, et d'une étape de traitement thermique du bouchon à une température entre 400 et 550 °C maintenue pendant 5 à 60 minutes.