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Patent Searching and Data


Title:
METHOD FOR CENTRIFUGALLY CASTING COMPOSITE STEEL PIPE BY MEANS OF SLAG
Document Type and Number:
WIPO Patent Application WO/2021/142624
Kind Code:
A1
Abstract:
Disclosed is a method for centrifugally casting a composite steel pipe by means of slag, the method comprising the following steps: C) casting slag in a molten state into a steel pipe by using a centrifugal casting process; and D) cooling the slag, and forming a glass or glass ceramic lining on the inner surface of the steel pipe, wherein the slag comprises one selected from blast furnace slag and steel slag. Further disclosed is a composite steel pipe manufactured by using the method. According to the method, a wear-resistant and corrosion-resistant glass or glass ceramic lining layer is prepared on the inner surface of the steel pipe by means of a centrifugal casting technique by utilizing molten slag generated in a steelmaking process, and external energy is not needed in the preparation process. The composite steel pipe can be used for conveying corrosive liquids, corrosive liquids containing abrasion particles, and gases, and has a wide application prospect in the fields of metallurgy, ore and chemical engineering.

Inventors:
XI WENJUN (CN)
WANG BAOQIN (CN)
ZHANG ZHIYING (CN)
Application Number:
PCT/CN2020/072040
Publication Date:
July 22, 2021
Filing Date:
January 14, 2020
Export Citation:
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Assignee:
TAIAN TENAHARD NEW MATERAILS TECH CO LTD (CN)
SHANXI ZHONGYANG IRON AND STEEL CO LTD (CN)
XI WENJUN (CN)
WANG BAOQIN (CN)
ZHANG ZHIYING (CN)
International Classes:
B22D13/02; C03C10/00
Foreign References:
CN110756759A2020-02-07
CN1290770A2001-04-11
CN106082655A2016-11-09
CN101988614A2011-03-23
CN102173588A2011-09-07
CN1302705A2001-07-11
CN101554652A2009-10-14
US4005741A1977-02-01
JPH0615428A1994-01-25
Attorney, Agent or Firm:
JINHENG LAW FIRM (CN)
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