Method for manufacturing a low-carbon nitrogen-containing austenitic stainless steel bar

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12024754
APP PUB NO 20240035110A1
SERIAL NO

18247564

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for manufacturing a low-carbon nitrogen-containing austenitic stainless steel bar sequentially includes smelting, electroslag remelting, and forging. During electroslag remelting, the steel ingot obtained in the smelting process is used as an electrode bar of the electroslag furnace and is remelted with specific slag and crystallized. The specific slag comprises CaF2 (65-70%), Al2O3 (15-20%), CaO (5-10%) and MgO (2-5%) in percentage by weight. Specific forging methods, including upsetting-and-drawing and radial forging, are used. In upsetting-and-drawing, the pass deformation is less than 35%, the pass reduction is 50-80 mm, the pass heating temperature is 1130-1150° C., and the pass deformation method is ellipse-ellipse-circle. The method can obtain the low-carbon high-strength nitrogen-containing austenitic stainless steel with uniformly distributed chemical composition, high purity and high strength.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
DAYE SPECIAL STEEL CO LTD435001 NO 316 HUANGSHI AVENUE HUANGSHI HUBEI HUANGSHI CITY HUBEI PROVINCE 435001

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Xiaoliang Hubei, CN 2 0
Lei, Yinghua Hubei, CN 3 0
Li, Zaoyu Hubei, CN 1 0
Ruan, Dong Hubei, CN 12 75
Sun, Guoyang Hubei, CN 1 0
Wang, Xianhua Hubei, CN 17 61
Xu, Guangpeng Hubei, CN 1 0
Xu, Peng Hubei, CN 685 5136
Zhang, Jun Hubei, CN 1152 7034
Zhang, Xiuli Hubei, CN 6 1
Zhou, Lixin Hubei, CN 21 1428

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jan 2, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 2, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 2, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00