Title:
PROCESS FOR CENTRIFUGALLY CASTING HIGH-NITROGEN AUSTENITIC STAINLESS STEEL PIPE AT NORMAL PRESSURE
Document Type and Number:
WIPO Patent Application WO/2018/107314
Kind Code:
A1
Abstract:
A process for centrifugally casting a high-nitrogen austenitic stainless steel pipe at normal pressure, comprising the following steps: S1, material preparation; S2, addition of metal materials; S3, addition of nitrogen elements; S4, molten steel pouring for steel pipe casting; S5, surface anti-corrosive treatment; and S6, cooling. The casting process is simple with fewer procedures, and can be performed at normal pressure, thereby achieving low energy consumption, and can increase nitrogen content of the steel pipe, reduce the overflow of nitrogen gas during the casting process, and effectively enhance the strength of the steel pipe.
More Like This:
Inventors:
SUN RUITAO (CN)
LI YONGDONG (CN)
LI YONGDONG (CN)
Application Number:
PCT/CN2016/109401
Publication Date:
June 21, 2018
Filing Date:
December 12, 2016
Export Citation:
Assignee:
QINGDAO BRANCH CO LTD OF MECHANICAL SCIENCE RES INSTITUTE (CN)
International Classes:
C22C33/04; B22D13/02; C22C38/40; C22C38/58
Foreign References:
| CN106513619A | 2017-03-22 | |||
| CN105108098A | 2015-12-02 | |||
| CN103924031A | 2014-07-16 | |||
| CN105695886A | 2016-06-22 | |||
| CN103540712A | 2014-01-29 | |||
| CN104988279A | 2015-10-21 | |||
| CN102965584A | 2013-03-13 | |||
| EP1033191A1 | 2000-09-06 | |||
| JPH08229668A | 1996-09-10 |
Attorney, Agent or Firm:
QINGDAO ZHIJIA INTELLECTUAL PROPERTY AGENCY FIRM (GENERAL PARTNERSHIP) (CN)
Download PDF: