Method of producing H-beams

申请公布号：US4322962(A)

申请号：US19790074501

申请日期：1979.09.11

申请公布日期：1982.04.06

申请人：

KAWASAKI STEEL CORPORATION

发明人：NAKANISHI, TERUYUKI;HITOMI, KIYOSHI

分类号：B21B1/08;B21B1/088;(IPC1-7):B21B1/12;B21B27/02

主分类号：B21B1/08

摘要：A method of producing, by universal mills, H-beams which are excellent in the strength and toughness of the joint between web and flanges. In roughing process, symmetric convexes, which have substantially the same cross section and differ in position in different mills, are alternately formed on at least either of the outer and inner sides of the web and flanges of the piece being rolled, to forcibly cause metal flow in the joints between web and flanges and thereby to increase the amount of strain of said joints. In finishing process, the convexes formed in said roughing process are pressed, thereby obtaining a H-beam having predetermined dimensions.

Wooden garment hanger and method for making same

Coupon dispenser with suction cup mounting

Packaging card for a device, such as a pen refill, as well as a method for packaging such a device

Length adjustable bottomrail having releasable ladder retainer

Barbecue grill debris catching trough

Balanced flue sealed vent terminal assembly

Propellant strip assembly and propellant charge structure

Method and device for optimizing utilization of a dampening agent in offset printing

Ratchet wrench having two driving stems

Press apparatus and press system

Device for joining and/or supporting jeweller articles, such as previous metals and pearls

Method of making a head disk assembly using a propagated light beam to detect a clearance between a disk and a head

Apparatus for changing and guiding running direction of conveyor belt

Cable-type steering device

High ground-clearance hybrid track/wheel drive

High flow rate formation fracturing and gravel packing tool and associated methods

Atmosphere concentration monitoring for substrate processing apparatus and life determination for atmosphere processing unit of substrate processing apparatus

Orifice plate for metering the flow of a medium

Actuator of the thermal type and method for closing and sealing the body of an actuator of the thermal type

Device for producing a twisted yarn in a combined spinning and twisting process