Invention Application
US20050178482A1 Heavy wall steel material having superior weldability and method for producing the same
审中-公开
具有优异焊接性的重壁钢材料及其制造方法
- Patent Title: Heavy wall steel material having superior weldability and method for producing the same
- Patent Title (中): 具有优异焊接性的重壁钢材料及其制造方法
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Application No.: US11101459Application Date: 2005-04-08
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Publication No.: US20050178482A1Publication Date: 2005-08-18
- Inventor: Hiroshi Nakajima , Shiro Torizuka , Kaneaki Tsuzaki , Kotobu Nagai
- Applicant: Hiroshi Nakajima , Shiro Torizuka , Kaneaki Tsuzaki , Kotobu Nagai
- Priority: JP048962/1999 19990225
- Main IPC: C21D8/00
- IPC: C21D8/00 ; C21D8/06 ; C22C1/10 ; C22C32/00 ; C22C33/04 ; C22C38/00 ; C22C38/04 ; C22C38/14
Abstract:
A tough high strength heavy wall steel material having superior weldability is provided, said steel material has a diameter or a side 5 mm or more in length, and comprises oxides 1 μm or less in particle diameter homogeneously dispersed at a dispersion density in a range of from 10,000 to 100,000 particles/mm2 and uniform ferrite grains 2 μm or less in grain diameter formed over the entire plane making a right angle with respect to the rolling direction.
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