Title:
HIGH-STRENGTH AND HIGH-TOUGHNESS ULTRALOW TEMPERATURE IMPACT RESISTANT TUBING HEAD FORGE PIECE BLANK AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/193587
Kind Code:
A1
Abstract:
Disclosed are a high-strength and high-toughness ultralow temperature impact resistant tubing head forge piece blank and a manufacturing method therefor. The high-strength and high-toughness ultralow-temperature impact-resistant tubing head forge piece blank comprises the following chemical components in percentage by mass: 0.30-0.40% of C; 0.20-0.50% of Si; 0.70-1.00% of Mn; 1.00-1.30% of Cr; 0.20-0.50% of Ni; 0.20-0.30% of Mo; 0.02-0.05% of V; 0.02-0.05% of Al; less than or equal to 0.012% of P; less than or equal to 0.005% of S; five harmful elements, i.e., less than or equal to 0.015% of Sn, less than or equal to 0.015% of As, less than or equal to 0.015% of Pb, less than or equal to 0.015% of Sb, and less than or equal to 0.015% of Bi; and gases, i.e., less than or equal to 1.5 ppm of [H], less than or equal to 15 ppm of [O], and less than or equal to 60 ppm of [N], with the balance being Fe and other inevitable impurities. According to the present invention, the composition design has marked superiority, the purity of steel materials is high, the structure uniformity of the forge piece can be significantly improved by means of forging under high pressure, and the strength, toughness and -60℃ low temperature impact resistance of the tubing head forge piece blank can be significantly improved.
Inventors:
WANG ZHONGXUE (CN)
LI JINHAO (CN)
HAN LEILEI (CN)
LI CHENGHAO (CN)
OUYANG ZHENGRONG (CN)
LIU SHANSHAN (CN)
ZHENG GUIYUN (CN)
ZHANG HAIXIA (CN)
MA CHUANQING (CN)
ZHANG LIPING (CN)
LI YUE (CN)
LI JINHAO (CN)
HAN LEILEI (CN)
LI CHENGHAO (CN)
OUYANG ZHENGRONG (CN)
LIU SHANSHAN (CN)
ZHENG GUIYUN (CN)
ZHANG HAIXIA (CN)
MA CHUANQING (CN)
ZHANG LIPING (CN)
LI YUE (CN)
Application Number:
PCT/CN2021/118763
Publication Date:
September 22, 2022
Filing Date:
September 16, 2021
Export Citation:
Assignee:
SHANDONG IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; B21J5/00; B21J5/06; B21J5/08; C21D1/18; C21D1/28; C21D6/00; C21D9/00; C22C33/06; C22C38/04; C22C38/06; C22C38/44; C22C38/46; C22C38/60
Foreign References:
| CN113088812A | 2021-07-09 | |||
| CN104894487A | 2015-09-09 | |||
| CN105385948A | 2016-03-09 | |||
| CN110230005A | 2019-09-13 | |||
| CN110257692A | 2019-09-20 |
Attorney, Agent or Firm:
FASTA INTELLECTUAL PROPERTY LIMITED (CN)
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