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1. 发明专利

JPH06154933A MANUFACTURE OF ANGLE MATERIAL 失效
公开(公告)号：JPH06154933A
公开(公告)日：1994-06-03
申请号：JP33231992
申请日：1992-11-18
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： B21B1/09 , B21B1/08 , B21B13/10 , B21B45/00 , B21D5/08 , B21H8/00
摘要： PURPOSE:To provide a method by which the angle material whose outer angle part is like a right angle, used for a frame of a steel-frame building can be manufactured with high productivity. CONSTITUTION:This method consist of a first process in which a desired part 4 in the plate width direction in a metallic plate 1 is heated by electric conduction to a thin belt shape from both faces in its plate thickness direction, while rotating an electrode roller 22, and a second process in which subsequently, the metallic plate is upset by upsetting rolls 6, 6 from the plate width direction of the metallic plate 1, a projecting part 41 is formed in a heated part, and an intermediate member 11 is formed. Also, this method consists of a third process in which by a caliber 212 of a die having a desired angle shape, or working rolls 210, 211, the projecting part 41 of the intermediate part is formed so as to become an outer angle part 31, and an angle material having a roughly right angle-like cross section shape is manufactured.

2. 发明专利

JPH05112899A MANUFACTURE OF AUSTENITIC STAINLESS STEEL GOOD IN SURFACE SKIN 失效
公开(公告)号：JPH05112899A
公开(公告)日：1993-05-07
申请号：JP30223791
申请日：1991-10-21
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU , TANAKA HIROBUMI
IPC分类号： C21D6/00 , C21D8/00 , C25F1/06
摘要： PURPOSE:To simplify the subsequent stages as for an austenitic stainless steel subjected to cold rolling for improving the roughened surface skin by shot blasting for removing surface scales by soln. treatment. CONSTITUTION:(i) A steel is subjected to cold rolling and is thereafter annealed at 750 to 900 deg.C. (ii) After the cold rolling, it is subjected to electrolytic treatment by neutral salt to remove a surface oxidized layer. Because the annealing temp. after cold rolling has been high in the conventional process, another shot blasting and skin pass rolling have been required, but, in this invention, they are made needless.

3. 发明专利

JPH055348A STEEL PLATE FOR STAIRCASE TREAD 失效
公开(公告)号：JPH055348A
公开(公告)日：1993-01-14
申请号：JP18338591
申请日：1991-06-27
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： E04F11/16
摘要： PURPOSE:To make manufacturing of a steel plate for staircase tread easy by a method wherein a steel plate made of specified materials is rolled with a rolling roll on which a sawtooth-like striped pattern part and a grooved part are provided by embossing the central part thereof. CONSTITUTION:A striped pattern part 6, approximately in 240mm width, and a grooved part 7, approximately in 40mm width, are provided by embossing the central part of a rolling roll 5, and flat parts 8a and 8b in approximate widths respectively in 30mm and 200mm are provided adjacently to both sides of the aforementioned parts. The rolling roll 5 manufactured as mentioned above is then empolyed for rolling of a long ferrite stainless steel plate approximately 3.2mm in thickness and 510mm in width and with such processing, a steel plate 1 equipped with a striped pattern part 2 having dents in 1.5-2.0mm depth, a grooved part 3 and flat parts 4a and 4b in approximate widths respectively in 30mm and 200mm is manufactured. Thereby the steel plate 1 for staircase tread can be manufactured economically.

4. 发明专利

JPH04300014A PRODUCTION OF REDUCED DEFORMED REINFORCING BAR 失效
公开(公告)号：JPH04300014A
公开(公告)日：1992-10-23
申请号：JP9111291
申请日：1991-03-28
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU , OGURI NAOHARU
IPC分类号： B21C1/00 , B21B1/16 , B21B15/00 , B21C3/08 , C25D3/12 , E04C5/03 , G01M7/02 , G09B25/04
摘要： PURPOSE:To manufacture the reduced deformed reinforcing bars with less friction of roller dies and to manufacture the reduced deformed reinforcing bars with good corrosion resistance. CONSTITUTION:The method contains (a) a process of forming a base wire rod to a prescribed dimension by drawing, (b) the process of plating the surface of the base wire rod which has been formed to the prescribed dimension, and (c) the process of pulling out the plated base wire rod by means of the roller dies having deformed hole dies. Since the lubricity between the roller dies and the drawing material is improved by the plating, the underfill of products is prevented and dimensional accuracy is maintained for a long time. Also, by the plating, the corrosion resistance of the products is improved.

5. 发明专利

JPH04228203A MANUFACTURE OF HARD-TO-WORK ANGLE MEMBER HAVING 60×C APEX ANGLE 失效
公开(公告)号：JPH04228203A
公开(公告)日：1992-08-18
申请号：JP41651490
申请日：1990-12-27
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： B21B1/09 , B21B1/08 , B21D47/01
摘要： PURPOSE:To roll-form the angle member with 60 deg. apex angle from the angle member with 90 deg. apex angle which is a blank to be worked by using rolls with rolling calibers. CONSTITUTION:The angle member W0 with 90 deg. apex angle, which is a blank to be worked, is notched outside the top part on each leg instead of deforming the apex part WA by the use of a hot rolling roll. Then, an intermediate product is made by processing the member through two-stage rolling rolls, five stands 1-5, which have roll calibers of successively steeper inclinations in order to draw the apex angle from 90 deg. to 60 deg., by one pass each in a cold rolling; and further the member is roll-formed into a desired size. Thus, the angle member having a smooth face and the 60 deg. angle (apex angle) formed between the two legs is manufactured.

6. 发明专利

JPH0459102A MANUFACTURE OF CHANNEL BAR 失效
公开(公告)号：JPH0459102A
公开(公告)日：1992-02-26
申请号：JP17334790
申请日：1990-06-29
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： B21B1/095 , B21B1/08 , B21D5/08
摘要： PURPOSE:To manufacture a channel bar from a low deformability material at low cost by making a perpendicular cross section to the longitudinal direction into a W-shaped section regard to an intermediate product in a hot or warm rolling with a caliber. CONSTITUTION:The intermediate product 2 is formed by performing the rolling work to a billet which is heated at a prescribed temp. with plural pairs of rolling rolls 10-12 on which a prescribed caliber 13 is formed. Subsequently, the channel bar 16 with flat end faces, mutually parallel flanges and flat web is formed with plural pairs of rolls for cold working (an hourglass roll 14 and barrel-shaped roll 15). In this way, even when it is a material which is low deformable and liable to generate the burning like titanium, the generation of surface flaws is prevented and the channel bar 16 of which the sectional shape is stable can be manufactured at low cost.

7. 发明专利

JPH02258175A WELDING METHOD FOR HIGH NITROGEN AUSTENITIC STAINLESS STEELS 失效
公开(公告)号：JPH02258175A
公开(公告)日：1990-10-18
申请号：JP8253389
申请日：1989-03-31
申请人： AICHI STEEL WORKS LTD
发明人： AIHARA MASAAKI , FURUTA OSAMU , KITAO HIDEKI
IPC分类号： B23K9/23 , B23K35/38 , B23K103/04
摘要： PURPOSE:To reduce the generation of blowholes of a weld zone and to obtain desired welding strength by performing MIG welding with Ar gas containing the specific quantity of O as shielding gas and with common metal as a consumable electrode. CONSTITUTION:In the welding method of high nitrogen austenitic stainless steels, the quantity of O in Ar which is shielding gas is regulated to

8. 发明专利

JPH02258173A ARC STABILIZING METHOD OF MIG WELDING 失效
公开(公告)号：JPH02258173A
公开(公告)日：1990-10-18
申请号：JP8253489
申请日：1989-03-31
申请人： AICHI STEEL WORKS LTD
发明人： AIHARA MASAAKI , FURUTA OSAMU , KITAO HIDEKI
IPC分类号： B23K9/173
摘要： PURPOSE:To stabilize an arc and to form a weld zone having excellent strength and few blowholes by applying an oxide base arc stabilizer on a weld zone to perform welding with pure argon as shielding gas. CONSTITUTION:When the arc is generated between a welding wire and base metal with pure argon as the shielding gas, oxygen is separated from the oxide base arc stabilizer applied on the weld zone and the quantity of oxygen mixed in the shielding gas is the minimum quantity required for stabilizing the arc. Accordingly, the blowholes of the weld zone are reduced and oxide base inclusion is also reduced and satisfactory strength of the weld zone is obtained.

9. 发明专利

JPH0215803A MANUFACTURE OF CHANNEL STEEL 失效
公开(公告)号：JPH0215803A
公开(公告)日：1990-01-19
申请号：JP16464288
申请日：1988-06-30
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： B21B1/095 , B21B1/08
摘要： PURPOSE:To form a channel steel having no surface flaw by rolling a pair of flange parts and a web part so that those thicknesses are equal to those of a product, then connecting parts between the flange and web parts are bent by an about right angle, further, forming parallel flange parts and a flat web part. CONSTITUTION:A billet is heated and sequentially rolled by rolling rolls to obtain a half-formed product 2 in which thicknesses of flange parts 3 and a web part 4 are equal to those of a product, a pair of the flange parts 3 and the web part 4 are in a straight lined shape, a right angled projecting part 6 is formed at corners 5 at which the flange parts 3 and the web part 4 are connected, and a recessed part 7 whose curvature radius is 2 or more times a thickness of the flange parts 3 is formed on the backside of the projecting part 6. Then, the half-formed product 2 is bitten by a recessed roller 13 and a projecting roller 14 to bend the flange parts 3 by an angle near to a right angle to the web part 4. Succeedingly, a pair of horizontal rolls 16 and a pair of vertical rolls 17 form a channel steel 20 having a pair of the flange parts 3 and the flat web part 4.

10. 发明专利

JPH0215802A MANUFACTURE OF CHANNEL STEEL 失效
公开(公告)号：JPH0215802A
公开(公告)日：1990-01-19
申请号：JP16464188
申请日：1988-06-30
申请人： AICHI STEEL WORKS LTD
发明人： FURUTA OSAMU
IPC分类号： B21B1/095 , B21B1/08
摘要： PURPOSE:To manufacture a channel steel having few surface flaws and to reduce wear of rolls by forming a W-shaped section steel stock whose flange part is tilted by a restricted angle by hot rolling by grooved rolls, then hot rolling the W-shaped stock so that the flange part angle is to be an about right angle, and cold forming parallel flange parts and a flat web part. CONSTITUTION:A heated stock is rolled by plural rolling rolls having a prescribed groove form. A pair of flange parts 3 are tilted by 15-75 deg. outward to the vertical line, a web part 4 is formed into a projecting shape to obtain a half-formed product 2a in which thicknesses of the flange part 3 and the web part 4 are nearly equal to those of a product. Then, the half-formed product 2a is hot rolled to be a half-formed product 2b in which an angle between the flange part 3 and the web part 4 is an about right angle. Further, the web part 4 of the half-formed product 2b is cold formed by plural pairs of cold forming rolls to form the half product 2b into a channel steel having parallel flange parts 3 and a flat web part 4.

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