Method of heat treatment of metal pipe includes placing the pipe in a heating furnace
	PILYAGIN M V; TAGIROV L R
	2024-02-06
专利权人	PILYAGIN M V (PILY-Individual) ; TAGIROV L R (TAGI-Individual)
申请日期	2024-02-06
专利号	RU2829412-C1
成果简介	NOVELTY - Invention relates to methods of heat treatment in air of metal articles with an inner cavity, for example, pipes, profiles and others. Method of heat treatment of a metal pipe includes placing the pipe in a heating furnace, heating at a given temperature and time of heat treatment and cooling in air outside the furnace, wherein hollow insert of quartz, ceramic or porcelain is arranged inside pipe with clearance relative to pipe inner surface and heat treatment is performed to produce oxide protective films without scale formation on pipe inner surface. In a version of the method, a hollow insert of quartz, ceramic or porcelain is placed in the inner cavity of the pipe with a gap relative to the inner surface of the pipe, applying a protective coating composition to the outer surface of the pipe and performing heat treatment to obtain oxide protective films and without formation of scale on the outer and inner surfaces of the pipe, wherein the composition used for the protective coating contains, wt.%: kaolin clay 50-25, quartz sand 25-45, boric acid 5-25, water – not less than 250 ml per 1 kg of the mixture. USE - Various technological processes. ADVANTAGE - Simplicity of method implementation and obtaining on surface of treated parts more dense defect-free thin oxide films preventing further oxidation of metals. 2 cl, 2 dwg
IPC 分类号	C21D-001/70 ; C21D-001/74 ; C21D-009/08
国家	俄罗斯
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/18222
专题	中国科学院新疆生态与地理研究所
作者单位	1.PILYAGIN M V (PILY-Individual) 2.TAGIROV L R (TAGI-Individual)
推荐引用方式 GB/T 7714	PILYAGIN M V,TAGIROV L R. Method of heat treatment of metal pipe includes placing the pipe in a heating furnace. RU2829412-C1[P]. 2024.

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