Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1991-06-20
1993-03-09
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72201, 723426, 723652, 148511, 148641, 148643, 239557, 266134, B21B 3710, B21D 3716, C21D 100, C21D 900
Patent
active
051917785
ABSTRACT:
A thin-webbed H-beam steel having a web thinner that flanges is produced by forcibly water cooling the outer surface of the flanges during an intermediate hot rolling prior to a final hot rolling by cooling to less than 700.degree. C., interrupting the cooling to return the temperature to greater than 700.degree. C., and repeating the cooling and interrupting in order to refine the microstructure of the surface of the flanges to a predetermined depth from the surface; final-hot rolling the intermediate-hot rolled H-beam steel; and forcibly water cooling the flanges of the final-hot rolled H-beam steel in a manner such that the web does not wave during this forcible water cooling, and such that upon completion of the forcible water cooling, thermal stress, generated in the web during air cooling to room temperature, does not exceed the buckling strength of the web.
REFERENCES:
patent: 3765660 (1973-10-01), Taylor et al.
patent: 3880358 (1975-04-01), Schaming
patent: 4016009 (1977-04-01), Economopoulos et al.
patent: 4486248 (1984-12-01), Ackert et al.
patent: 4497180 (1985-02-01), Graham
patent: 4759504 (1988-07-01), Woodward
patent: 4785646 (1988-11-01), Uekaji et al.
patent: 4810311 (1989-03-01), Economopoulos
patent: 5050418 (1991-09-01), Grotepass
Patent Abstracts of Japan, vol. 7, No. 114 (C-166) (1259) May 18, 1983.
Patent Abstracts of Japan, vol. 10, No. 122 (C-344) (2180) May 8, 1986.
Patent Abstracts of Japan, vol. 12, No. 22 (C-470) (2869) Jan. 22, 1988.
Patent Abstracts of Japan, vol. 13, No. 510 (C-654) (3858) Nov. 15, 1989.
European Search Report, EP 91 30 5475, dated 09 Mar. 1992.
Fujita Kazuo
Hadano Hiroaki
Hasegawa Hiroyuki
Hioki Takeshi
Horiuchi Yasushi
Larson Lowell A.
Nippon Steel Corporation
Schoeffler Thomas C.
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