WO2002092250A1 - Fil d'acier deforme par traitement thermique et procede et appareil de fabrication d'un tel fil d'acier - Google Patents
Fil d'acier deforme par traitement thermique et procede et appareil de fabrication d'un tel fil d'acier Download PDFInfo
- Publication number
- WO2002092250A1 WO2002092250A1 PCT/JP2001/006624 JP0106624W WO02092250A1 WO 2002092250 A1 WO2002092250 A1 WO 2002092250A1 JP 0106624 W JP0106624 W JP 0106624W WO 02092250 A1 WO02092250 A1 WO 02092250A1
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- WO
- WIPO (PCT)
- Prior art keywords
- steel wire
- heat
- rolling
- quenching
- treated
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 103
- 239000010959 steel Substances 0.000 title claims abstract description 103
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 238000000034 method Methods 0.000 title description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 61
- 238000010791 quenching Methods 0.000 claims abstract description 43
- 230000000171 quenching effect Effects 0.000 claims abstract description 43
- 238000005496 tempering Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 230000006698 induction Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000005482 strain hardening Methods 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 claims description 5
- 238000010924 continuous production Methods 0.000 claims 3
- 230000007547 defect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F9/00—Straining wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/166—Rolling wire into sections or flat ribbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/045—Manufacture of wire or bars with particular section or properties
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
- B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2205/00—Particular shaped rolled products
- B21B2205/04—Taper- or wedge-shaped profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
Definitions
- the present invention relates to a heat-treated deformed steel wire having a deformed cross section such as a square or rectangular or approximately wedge-shaped cross section used for coil springs and other applications, and its manufacture.
- a coil spring using a deformed cross section steel wire was drawn from a rolled steel material having a round cross section into a deformed cross section by drawing or the like. Then, this drawn steel wire is quenched and tempered by a method such as oil tempering as shown in the process of FIG. 5 (a), and then coiled into a coil spring shape, or a coil spring as shown in FIG. 5 (b). After being coiled into a shape, it was manufactured by quenching and tempering with an electric furnace etc.
- the present invention provides a method for producing a heat-treated deformed steel wire heat-treated in a single step by continuously hot-forming the steel wire of round cross section into a deformed cross-section and simultaneously performing forming and quenching heat treatment.
- the purpose is in addition, it is an object of the present invention to provide a method for producing a heat treated deformed steel wire having high dimensional accuracy and good linearity by performing tension quenching with little variation in tension during quenching and cooling.
- the present invention is particularly suitable for steel wires for high strength coil springs, but it also has a wide range of applications such as heat treated deformed steel wires that have linearity and is required to have linearity, such as other angular cross-sectional torsion bars etc. It can be used.
- the heat-treated deformed steel wire of the present invention and the method for producing the same are heated to a rolling temperature for a short period of time by induction heating or Z and direct current heating means, and hot-rolled into a predetermined deformed cross section It is characterized in that it is quenched and quenched immediately after rolling and then subjected to tempering heat treatment.
- the steel wire to be processed is heated rapidly for a short time to A 3 temperature or more at a heating rate of 100 ° C. Z s or more, rolled to a predetermined profile by rolling rolls at a temperature of A r 3 or more, It is desirable to obtain a high tensile strength by quenching and quenching by quenching and cooling means disposed in tandem in the vicinity of the rolling roll from a temperature of Ar 1 or higher. It is desirable that the quenching and cooling means be disposed as close to the rolling mill as possible. In this way, rapid cooling immediately after rolling prevents growth of crystal grains, and high hardness and hardened hardness can be obtained.
- the work hardening be carried out by means of tensile work hardening in which the steel wire to be processed is quenched while being tensioned immediately after the hot rolling.
- the tension applied to the steel wire to be processed can be provided by a pinch roller or a take-up machine or a cabstan device driven by a torque converter drive that absorbs the tension fluctuation of the steel wire. Desirable to eliminate fluctuations.
- a constant large curvature of the wire does not affect the product, but if the wire has a meander, twist or slight bend, the product shape Defects in the product cause the product yield to decrease.
- a drive device with a torque converter is used to drive a pinch roller, a take-up machine, and a capstan device, and fluctuations in the tension of the wire are absorbed by the torque converter to apply constant tension to the wire. It is characterized by doing. As a result, it is possible to obtain a high strength, hardened spring steel wire with uniform dimensional accuracy in cross-sectional dimension.
- the torque converter-equipped drive device does not necessarily mean that the torque converter and the drive device are integrated, but includes all devices that are driven via a torque converter.
- tempering temperature by induction heating and tempering It is desirable that the quenching and tempering heat treatment can be performed continuously, and tempering can be continuously performed by tempering induction heating coils disposed in tandem behind the quenching and cooling means. desirable.
- the manufacturing method of the present invention is widely effective for welding deformed wires having a square or rectangular or approximately wedge-shaped cross section, and heat-treated deformed steel wires having a tensile strength of 600 N / mm or more can be easily manufactured.
- the apparatus for continuously producing a heat-treated deformed steel wire according to the present invention for producing the heat-treated deformed steel wire comprises: rolling heating means by induction heating or / and direct current heating which heats a material steel wire to a rolling temperature; A rolling means for forming, and a quenching and quenching means and a tension applying means for quenching and quenching while applying tension to a steel wire to be processed immediately after rolling and forming are disposed in tandem.
- the rolling means is a four-sided rolling mill
- the tension applying means is a pinch roller or a winder or a capstan device driven by a drive device with a torque converter. Quenching and tempering can be performed continuously by arranging tempering heating means for heating to tempering temperature in tandem.
- Fig. 2 is a view showing an example of the cross-sectional shape of the heat-treated deformed steel wire of the embodiment of the present invention.
- Fig. 3 is a diagram showing the shape of a roll of a four-way rolling mill of the embodiment of the present invention.
- Fig. 4 is a flow chart showing the manufacturing process of the heat-treated deformed steel wire according to the embodiment of the present invention.
- Fig. 5 is a flowchart showing a method of manufacturing a coil spring using the conventional heat-treated deformed steel wire.
- FIG. 8 A chart showing the temperature at each position of the apparatus of the embodiment of the present invention
- Fig. 1 is a conceptual diagram showing the entire configuration of a heat-treated deformed steel wire manufacturing apparatus according to an embodiment of the present invention
- Fig. 2 is an example of a cross-sectional shape of heat treated deformed steel wire used in this embodiment
- FIG. 4 is a diagram showing the roll shape of the L 0 machine (rolling means), and FIG. 4 is a flowchart showing the manufacturing process of the heat-treated deformed steel wire of the embodiment of the present invention.
- the pinch roll 9 is driven by a motor 9 a with a torque converter reducer. ⁇
- the heat-treated deformed steel wire of this embodiment has an approximate wedge-shaped cross section as shown in FIG.
- a four-way rolling mill 7 rolling this is, as shown in FIG. 3, composed of a pair of upper and lower horizontal rolls 1 and 1 and a pair of left and right vertical rolls 2 and 2.
- the horizontal roll 1 below 0 forms the side of the approximate wedge-shaped cross section, and the left and right vertical rolls 2 form the top and bottom.
- the material steel wire W 1 is induction-heated by rolling heating corinole 6 and then hot rolled to a wire W 2 of an approximate wedge-shaped cross section shown in FIG. 2 by a four-sided rolling mill 7. It is quenched by 8 and processed and quenched. At this time, since the pinch roll 9 is rotating at a feed speed slightly higher than the rolling exit speed, the deformed wire W 2 is subjected to tension by the pinch roll 9 and quenched while being fed out. Be done. By cooling while applying tension in this way, a high degree of linearity and a hardened steel wire can be obtained.
- the pinch roll 9 is driven by the motor 9 a with a torque converter reducer, no excessive tensile force is exerted on the wire W 2, and the dimensional variation of the brazing material is prevented.
- the quenched wire rod is heated to a tempering temperature by a tempering heating coil 10 to be tempered and wound up by a wire taker 11. Then, the heat-treated deformed steel wire that has been heat-treated and coiled off is coiled and formed into a predetermined shape when it is used for a coil spring.
- the modified cross sectional forming and the quenching and tempering are performed in one step. It is characterized by
- tension is applied to the wire by the pinch roll, but instead of the pinch hole, a capper device may be used, or tension may be applied by a skimming machine.
- a motor with torque converter is used to drive the Kapstan device or the skiving machine.
- rolling heating may be performed by direct energization or combination of induction heating and direct energization.
- FIG. 7 shows the dimensions of the deformed profiled steel wire of the rolled wedge-shaped cross section and the corresponding wire diameter. The reduction of area from wire to deformed steel wire is about 0.9.
- a steel wire rolled to a wedge-shaped cross section of various dimensions was quenched by quenching while applying tension and then quenched by tempering.
- An irregular shaped wire rod with a small diameter cross section such as the 40 series, 30 series and 25 series shown in Fig. 7 was difficult due to the large variation in cross sectional dimension by conventional tension hardening, but the present invention is not limited to the pinch with torque converter Since tension is applied by rolls, tension hardening is possible to such small-diameter cross section steel wires.
- L 1 6 0 is an approximate wedge-shaped cross section shown in FIG. 2 with a height of 1 40, 40 mm and a bottom surface 7 10 mm-top surface 4 7 O mm, but a round diameter of the raw material 1 0 80 mm It rolled to this shape using a wire rod.
- the reduction rate was 0.99 059.
- the variation in cross-sectional dimension was less than 0.05 mm, and a high-precision, heat-treated deformed steel wire was obtained.
- the heating conditions were such that the temperature was raised by 7 sec to the rolling temperature, and the feed speed of the steel wire was 10 O mm / s at the outlet side.
- the heat treatment temperature was measured at each position of heating coil outlet side 1 in FIG. 1, position 2 after heat soaking, roll inlet 3, roll inlet 4, roll outlet 4, water-cooled jacket front 5 and tempering heating 6. The measurement results are shown in Fig.8.
- the steel wire is heated by rolling heating coil 6 to about 10 24 ° C., which is higher than A c 3 temperature, to be V-structured, It is rolled at a temperature range of 3 or more. Then, immediately after rolling, it was quenched by rapid cooling from a temperature of 70 ° C. or more at Ar 1 or higher. As a result, a hardened martensitic microstructure is obtained and high strength is obtained.
- the quenched steel wire was tempered by heating to about 500 ° C. by the tempering heating coil 10.
- the heat-treated deformed steel wire did not show any small bend, and high linearity was obtained.
- a coil spring was formed using this heat-treated deformed steel wire.
- a heat-treated deformed wire having an approximate wedge-shaped cross section was produced, and the effect on coil spring was confirmed.
- the present invention can be applied not only to wedge-shaped cross sections but also to heat-treated deformed wires of square or rectangular cross sections.
- the application is good not only for the coiled spring but also for linearity, so man-hours are reduced even for deformed torsion bars used in straight lines Product yield is improved.
- the invention is broadly applicable to other applications.
- the heat-treated deformed steel wire of the present invention since heating is performed rapidly for a short time by induction heat generation or the like, defects such as decarburization do not occur unlike other heating methods.
- heat treatment since heat treatment is carried out simultaneously with forming and rolling into a deformed shape, a heat-treated deformed steel wire can be obtained in one step.
- high strength can be obtained by rapid heating and work hardening.
- the steel wire to be processed is rapidly heated to a temperature above A c 3 and rolled to a predetermined profile by a four-way rolling roll in a temperature range above A r 3 and immediately after rolling from a temperature above A r 1
- quenching by quenching means and direct quenching
- tempering can be performed continuously by providing tempering induction heating coils in tandem behind the quenching and cooling means and tempering.
- the quenching is carried out by quenching while applying tension after hot rolling, a heat treated profile steel wire having high linearity without slight bending such as meandering or twisting can be obtained. Since the tension applied in this hardening is given by a pinch roller or take-off machine or a capstan device driven by a drive device with a torque converter, the variation in tension is small and the variation in cross sectional dimension due to bowing is small. . Since this effect is particularly large for a wire with a small diameter cross section, the present invention enables tension hardening of a deformed wire with a small diameter cross section, which was conventionally difficult.
- rolling heating is performed by induction heating, but direct heating may be used, or both may be used in combination.
- the four-roll mill is used as one stand, but two or more stands may be used.
- the cross-sectional shape of the heat-treated deformed steel wire may have various cross-sectional shapes such as corners and rectangular cross-sections other than the approximate wedge shape in this embodiment.
- the heat-treated deformed steel wire of the present invention As described above, according to the heat-treated deformed steel wire of the present invention and the method and apparatus for manufacturing the same Since a heat-treated, heat-treated deformed steel wire with excellent linearity and high strength is obtained in one step, when used as a coil spring wire, the defect ratio in coil forming due to small bending is reduced to almost 0. The cost of manufacturing the coil spring due to the deformed spring wire can be greatly reduced. In particular, it is effective for the production of heat-treated deformed steel wires of small cross-section, which has hitherto been difficult. In addition, it can be widely used in other applications such as deformed cross section tortion bars.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020027006551A KR100662963B1 (ko) | 2001-05-10 | 2001-08-01 | 열처리 이형강선 제조방법 |
EP01954408A EP1402965B1 (en) | 2001-05-10 | 2001-08-01 | Method for manufacturing heat- treated deformed steel |
DE60143591T DE60143591D1 (de) | 2001-05-10 | 2001-08-01 | Verfahren zur herstellung eines wärmebehandelten verformten stahldrahtes |
US10/111,646 US20040060619A1 (en) | 2001-05-10 | 2001-08-01 | Heat-treated deformed steel wire and method and apparatus for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-139429 | 2001-05-10 | ||
JP2001139429 | 2001-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002092250A1 true WO2002092250A1 (fr) | 2002-11-21 |
Family
ID=18986205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/006624 WO2002092250A1 (fr) | 2001-05-10 | 2001-08-01 | Fil d'acier deforme par traitement thermique et procede et appareil de fabrication d'un tel fil d'acier |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040060619A1 (ja) |
EP (1) | EP1402965B1 (ja) |
KR (1) | KR100662963B1 (ja) |
DE (1) | DE60143591D1 (ja) |
TW (1) | TWI235768B (ja) |
WO (1) | WO2002092250A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110125195A (zh) * | 2019-05-17 | 2019-08-16 | 江苏胜达科技有限公司 | 胎圈钢丝细拉生产线及其细拉工艺 |
CN111705184A (zh) * | 2020-08-03 | 2020-09-25 | 沈阳慧通远达冶金技术研发有限公司 | 一种带有凹槽的钙线加工模具装置及其使用方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070131319A1 (en) * | 2005-12-08 | 2007-06-14 | Pullman Industries, Inc. | Flash tempering process and apparatus |
KR101075323B1 (ko) * | 2009-05-19 | 2011-10-19 | 대원강업주식회사 | 헬리코이드 리덕션 밀을 이용한 코일 스프링 제조방법 |
JP6259621B2 (ja) | 2012-09-27 | 2018-01-10 | 新日鐵住金ステンレス株式会社 | 冷間加工性、耐食性に優れた超非磁性軟質ステンレス鋼線材及びその製造方法、鋼線、鋼線コイル並びにその製造方法 |
WO2015188278A1 (en) | 2014-06-13 | 2015-12-17 | M3 Steel Tech Inc. | Modular micro mill and method of manufacturing a steel long product |
KR101972456B1 (ko) * | 2017-07-17 | 2019-04-25 | 홍덕산업(주) | 직선 품질이 우수한 타이어 보강용 스틸코드와 단일강선 및 이의 제조방법 |
CN108115000A (zh) * | 2018-01-04 | 2018-06-05 | 上海展屿金属科技有限公司 | 一种小截面高精度毛刷锚线异型材的制造方法及其装置 |
CN111730007B (zh) * | 2020-08-07 | 2022-06-24 | 山东睿煜矿用材料加工有限公司 | 一种钢筋弯箍机的矫直装置 |
CN114570854A (zh) * | 2020-11-30 | 2022-06-03 | 宝钢金属有限公司 | 一种变截面弹簧钢丝及其制造方法和装置 |
CN113800331A (zh) * | 2021-09-22 | 2021-12-17 | 绍兴市柯桥区欣飞科技有限公司 | 一种收线装置 |
CN115213243B (zh) * | 2022-07-21 | 2024-05-14 | 辽宁科技大学 | 一种钢坯加热装置及方法 |
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JPH0299203A (ja) * | 1988-10-01 | 1990-04-11 | Daido Steel Co Ltd | 圧延設備 |
JP2000233202A (ja) * | 1999-02-09 | 2000-08-29 | Kawasaki Steel Corp | 4ロール圧延方法 |
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US3580746A (en) * | 1966-10-04 | 1971-05-25 | Trefileries & Cableries De Bou | Process for the modification of the mechanical characteristics of carbon steel wire |
US5058410A (en) * | 1989-03-14 | 1991-10-22 | Boehler Gesellschaft M.B.H. | Method and apparatus fo producing thin wire, rod, tube, and profiles, from steels and alloys with low deformability, particularly hardenable steels |
AT396073B (de) * | 1990-10-25 | 1993-05-25 | Boehler Gmbh | Verfahren zum warmwalzen und waermebehandeln von stabfoermigem material |
JP3387149B2 (ja) * | 1993-05-13 | 2003-03-17 | 住友金属工業株式会社 | 伸線強化高強度鋼線用線材およびその製造方法 |
-
2001
- 2001-08-01 WO PCT/JP2001/006624 patent/WO2002092250A1/ja not_active Application Discontinuation
- 2001-08-01 DE DE60143591T patent/DE60143591D1/de not_active Expired - Lifetime
- 2001-08-01 EP EP01954408A patent/EP1402965B1/en not_active Expired - Lifetime
- 2001-08-01 KR KR1020027006551A patent/KR100662963B1/ko active IP Right Grant
- 2001-08-01 US US10/111,646 patent/US20040060619A1/en not_active Abandoned
- 2001-12-27 TW TW090132627A patent/TWI235768B/zh not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0299203A (ja) * | 1988-10-01 | 1990-04-11 | Daido Steel Co Ltd | 圧延設備 |
JP2000233202A (ja) * | 1999-02-09 | 2000-08-29 | Kawasaki Steel Corp | 4ロール圧延方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110125195A (zh) * | 2019-05-17 | 2019-08-16 | 江苏胜达科技有限公司 | 胎圈钢丝细拉生产线及其细拉工艺 |
CN110125195B (zh) * | 2019-05-17 | 2024-04-05 | 江苏胜达科技有限公司 | 胎圈钢丝细拉生产线及其细拉工艺 |
CN111705184A (zh) * | 2020-08-03 | 2020-09-25 | 沈阳慧通远达冶金技术研发有限公司 | 一种带有凹槽的钙线加工模具装置及其使用方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1402965B1 (en) | 2010-12-01 |
EP1402965A1 (en) | 2004-03-31 |
KR20030023601A (ko) | 2003-03-19 |
EP1402965A4 (en) | 2008-08-20 |
KR100662963B1 (ko) | 2006-12-28 |
US20040060619A1 (en) | 2004-04-01 |
DE60143591D1 (de) | 2011-01-13 |
TWI235768B (en) | 2005-07-11 |
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