MANUFACTURING METHOD OF FIRE GRATE

To provide a manufacturing method of a fire grate capable of greatly reducing significant wall thinning due to oxidation and decarburization on both ends of a pipe upon performing thermal treatment for a prototype of fire grate in which the pipe made of carbon steel is cast in a main body of the fir...

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Main Authors TAKAHASHI TOSHIMITSU, YAMANAKA KOICHI, RIKO ATSUSHI, HAMAGUCHI TOMOHIRO, HOSOYA RYOTA
Format Patent
LanguageEnglish
Japanese
Published 16.02.2023
Subjects
BLASTING
CLEANING OR RAKING GRATES
COMBUSTION APPARATUS
COMBUSTION PROCESSES
GRATES
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:To provide a manufacturing method of a fire grate capable of greatly reducing significant wall thinning due to oxidation and decarburization on both ends of a pipe upon performing thermal treatment for a prototype of fire grate in which the pipe made of carbon steel is cast in a main body of the fire grate.SOLUTION: A manufacturing method of a fire grate 5 comprises a casting step, a plating step, and a heat treatment step. In the casting step, a pipe 2 made of carbon steel is insert-cast in a fire grate body 1, with both ends 2a, 2b of the pipe 2 protruding from the fire grate body 1 to form a fire grate prototype 50. In the plating step, at least both ends 2a, 2b of the pipe 2 are plated with metal. In the heat treatment step, the fire grate prototype 50 is heat-treated after the plating step.SELECTED DRAWING: Figure 1 【課題】炭素鋼からなる配管が火格子本体に鋳包まれた火格子原型を熱処理する際に配管の両端における酸化および脱炭による著しい減肉を大幅に軽減することができる火格子の製造方法を提供する。【解決手段】火格子５の製造方法は、鋳造工程とメッキ工程と熱処理工程を含む。鋳造工程では、火格子本体１内に炭素鋼からなる配管２が、配管２の両端２ａ，２ｂが火格子本体１から突出する状態で鋳包まれた火格子原型５０を作製する。メッキ工程では、配管２の少なくとも両端２ａ，２ｂに金属メッキを施す。熱処理工程では、メッキ工程後に火格子原型５０を熱処理する。【選択図】図１
Bibliography:Application Number: JP20210129004