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1. 发明专利

JPS56152922A PRODUCTION OF STAINLESS STEEL CLAD STEEL WIRE 失效
公开(公告)号：JPS56152922A
公开(公告)日：1981-11-26
申请号：JP5695680
申请日：1980-04-28
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , MIZUHARA MAKOTO , MURAI TERUYUKI
IPC分类号： B21C9/00 , C21D8/06
摘要： PURPOSE:To produce the titled high-strength steel wire having adhesive strength and arbitrary thickness by drawing a wire rod made by inserting and fitting a high- carbon steel wire or alloy steel wire into a stainless steel wire and heating and annealing only the surface layer at a proper timing and further drawing the same. CONSTITUTION:A high-carbon steel wire or alloy wire is inserted or fitted into a stainless steel wire or a stainless tape is formed around a steel wire and is formed to a pipe shape by welding, whereby a blank material clad with stainless steel on the steel wire is made. This blank material is drawn, and before the stainless clad layer hardens and reaches working limit, only the surface clad layer is heated and annealed to 500-700 deg.C by >=1 times of high-frequency heating or the like to soften, and further it is subjected to drawing, whereby the stainless steel clad steel wire of high strength and toughness is produced.

2. 发明专利

JPS56148410A MANUFACTURE OF STEEL WIRE COATED WITH STAINLESS STEEL LAYER 失效
公开(公告)号：JPS56148410A
公开(公告)日：1981-11-17
申请号：JP5152880
申请日：1980-04-18
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , MIZUHARA MAKOTO , MURAI TERUYUKI
IPC分类号： B21C1/00
摘要： PURPOSE:To perfectly bond the core material and the stainless steel coat through its interface, and to improve the strength of the clad wire and its cohesiveness, by coating the core material with the stainless steel, by drawing the stainless steel-coated core material into a wire with a prescribed reduction of area, by applying the patenting treatment to thus prepared wire at prescribed temperatures, and then by drawing into the wire of a prescribed wire gauge. CONSTITUTION:A stainless steel tape 2 wound on a bobbin 1 is uncoiled and fed to the forming roll 4 wherein the tape 2 is formed into a pipe shape around a core material 3 made of a high- carbon steel or alloy steel; the butting faces of this tape 2 in the pipe shape are welded by the welder 5; hrereby the clad layer is prepared around the outer surface of the core material 3; then, the core material 3 together with the clad layer is passed through the die 6 and is subjected to the preliminary wire drawing work with >=70% reduction of area. Hereby, the core material 3 is tightly, physically bonded with the stainless steel layer; the clad wire is heated to >=900 deg.C by the heater 7 and is passed through the molten lead tank 8 for quenching; thereby the wire receives the patenting treatment that causes a metallic diffusion through the interface between the core material 3 and the stainless steel layer, which are thereby perfectly bonded. Next, this clad wire is drawn by the wire drawing machine 9 into a wire of prescribed wire gauge which is thereupon coiled by the coiler 10.

3. 发明专利

JPS56108825A MANUFACTURE OF HARD DRAWN* HIGH CARBON STEEL WIRE OF HIGH TOUGHNESS 失效
公开(公告)号：JPS56108825A
公开(公告)日：1981-08-28
申请号：JP1111180
申请日：1980-02-01
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NIWA TSUTOMU , NAKADA SHIYUUICHI , TAKAKURA SEIZOU
IPC分类号： B21C1/00 , C21D7/02 , C21D8/00 , C21D8/08
摘要： PURPOSE:To impart high toughness to high carbon steel wire, by bending the steel wire repeatedly between drawing processes. CONSTITUTION:Plural roll stands 1 constituted of many rolls, which satisfy a relation d/D=0.03-0.15, where (d) is the diameter of steel wire 3, D is the diameter of the rolls 2, are arranged in two or more directions on a circumference, and the steel wire 3 travels through between the rolls 2. Hereby, the steel wire 3 is subjected to bending repeatedly over the whole length of the steel wire 3 continuously at a >=5 deg. angle. Final drawing after bending is performed at 5-25% reduction of area, and the steel wire 3 is drawn at

4. 发明专利

JPS5495915A HEAT TREATING METHOD FOR STEEL WIRE ROD 失效
公开(公告)号：JPS5495915A
公开(公告)日：1979-07-28
申请号：JP189478
申请日：1978-01-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , MIZUHARA MAKOTO
IPC分类号： C21D9/52 , C21D9/56 , C21D9/64
摘要： PURPOSE:To provide superior strength and cold workability to a carbon steel wire rod by patenting the rod with warm water of above 70 deg.C under a press. above atmospheric press. CONSTITUTION:Carbon steel wire rod 2 contg. C; 0.4-0.9%, Si; 0.15-0.30% and Mn; 0.30-0.80% is reheated in heating furnace 3, cooled in vessel 4 filled with warm water of above 70 deg.C, coiled roung coiler 5, and reheating patented. At this time, compressed air is injected into vessel 4 through air injection holes 6 to pressurize the water to atmospheric press. +0.2 atm-atmospheric press. +5 atm, or vessel 4 is deepened and rod 2 is passed through the vessel in the vicinity of the bottom to be applied with the above hydraulic press. Thus, the cooling speed of rod 2 is increased, the pearlite transformation temp. lowers, forming fine pearlite structure, and the tensile strength and cold workability are enhanced. In case of direct patenting, rod 2 leaving finish rolls 1 is treated in the same way as indirect patenting through pinch rolls 3 and coiler 4.

5. 发明专利

JPS5480228A MANUFACTURE OF DEFORMED STEEL WIRE 失效
公开(公告)号：JPS5480228A
公开(公告)日：1979-06-26
申请号：JP14818977
申请日：1977-12-12
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NIWA TSUTOMU , NAKADA SHIYUUICHI
IPC分类号： B21C9/00 , B21B1/16 , C21D8/06 , C21D9/52
摘要： PURPOSE:To uniform the cross-sectional hardness distribution of a deformed steel wire by directly patenting each of deformed carbon steel products in a warm water vessel of above 70 deg.C, followed by continuous cold drawing through deformed dies. CONSTITUTION:Each of carbon steel products contg. C; 0.1-0.9%, Mn; 0.5- 0.8% and Si; 0.2-0.3% is deformed to a shape other than round. The resulting carbon steel wire the cross section of which is deformed is patented in a warm water vessel of above 70 deg.C to provide drawability, pickled, and continuously cold drawn through dies of the same shape. Since deformation of the wire in the dies is uniformed, a local increase in friction is minimized on the contact face between the dies and the wire, and seizing or wear of the dies are reduced, elongating the dies life. The uniform deformation results in uniform cross-sectional hardness distribution of the deformed steel wire.

6. 发明专利

JPS53120623A MANUFACTURE OF HIGH CARBON STEEL WIRE 失效
公开(公告)号：JPS53120623A
公开(公告)日：1978-10-21
申请号：JP3542377
申请日：1977-03-31
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI
IPC分类号： C21D9/52 , C21D1/78 , C21D9/56
摘要： PURPOSE:To prevent precipitation of intergranular cementive at the central part of a wire in patenting by quench hardening the wire and rapidly heating it after which the wire is dipped in a lead bath to carry out heat treatment while allowing undissolved carbides to remain at the central part.

7. 发明专利

JPS5861234A MANUFACTURE OF DEFORMED STEEL WIRE 失效
公开(公告)号：JPS5861234A
公开(公告)日：1983-04-12
申请号：JP14938182
申请日：1982-08-28
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NIWA TSUTOMU , NAKADA SHIYUUICHI
IPC分类号： B21C1/00 , B21C9/00 , C21D8/06 , C21D9/52
摘要： PURPOSE:To make the cross-sectional hardness distribution of a deformed steel wire uniform and to elongate the life of dies by hot working a round wire rod of a carbon steel austenitized in a heating furnace under prescribed conditions. CONSTITUTION:A carbon steel contg. 0.1-0.9% C, 0.5-0.8% Mn and 0.2-0.3% Si is austenitized in a heating furnace, deformed with a deformed grooved roll, and patented by immersion in a hot water bath at >=70 deg.C. The patented deformed wire rod is continuously cold drawn through deforming dies. Thus, the cross-sectional hardness distribution of the deformed steel wire is made uniform, and when the deformed steel wire is drawn through dies, the fouling and wear of the dies are reduced to elongate the life of the dies.

8. 发明专利

JPS57128541A STEEL WIRE COATED WITH NYLON 失效
公开(公告)号：JPS57128541A
公开(公告)日：1982-08-10
申请号：JP1408481
申请日：1981-02-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , MIZUHARA MAKOTO
IPC分类号： B32B15/088 , B32B15/04 , B32B15/08

9. 发明专利

JPS56154239A MANUFACTURE OF HIGH-STRENGTH STAINLESS-CLAD STEEL WIRE 失效
公开(公告)号：JPS56154239A
公开(公告)日：1981-11-28
申请号：JP5695780
申请日：1980-04-28
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , MIZUHARA MAKOTO , MURAI TERUYUKI
IPC分类号： B21C1/00 , B21F19/00
摘要： PURPOSE:To improve strength and corrosion resistance by using a steel wire drawn with high workability after a patenting treatment as a core material and by cladding it with stainless steel before wire drawing. CONSTITUTION:A high-carbon steel wire is inserted into and fit in a stainless steel tube or a stainless steel tape formed in a tubular shape and welded, and then drawn to manufacture a stainless-steel clad wire. In this method, a hard drawn high-carbon steel manufactured by patenting and drawing the high-carbon steel wire with a >=20% surface reduction rate is used as a core wire.

10. 发明专利

JPS5641327A COOLING APPARATUS FOR QUENCHING STEEL WIRE ROD 失效
公开(公告)号：JPS5641327A
公开(公告)日：1981-04-18
申请号：JP11777679
申请日：1979-09-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KOKITA HIDEO , NAKADA SHIYUUICHI , NISHIMURA YOSHIFUMI
IPC分类号： C21D9/52 , C21D9/00 , C21D9/573
摘要： PURPOSE:To provide a cooler described in the title which allows to manufacture steel wire rod having excellent straightness, by specifying the length of a guide, having spiral grooves on the surface, for introducing steel wire rod, by cooling the surface of the steel wire rod uniformly with backflow water, which is formed from cooling water sprayed from the internal pipe in the advancing direction of the steel wire rod. CONSTITUTION:On the inner surface at the rear end 7 of an internal pipe 2, which is surrounded by a cylindrical external pipe 1, is arranged a guide 4 for wire rod 9. On the surface of the guide 4 are made plural grooves 6 spirally. High pressure water is introduced 5 into the one end of a vacant space formed between the pipes 1, 2, and is sprayed through many spray holes 3 made in the wall of the pipe 2 in the advancing direction of the wire rod 9 in order to cool the high temp. steel wire 9 which passes through the center of the pipe 2. The guide 4 is set at an inner diameter 0.5-1.5mm. larger than the outer diameter of the wire rod 9, and the guide 4 is set at a length shown by formula. As a result, the backflow water is scattered from the grooves uniformly at the inlet of the guide 4, hereby ununiform preliminary cooling or commencement of local transformatio n etc. is entirely prevented, so that the wire rod is quenched and steel wire rod having excellent straightness is manufactured.

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