JP2000096151A - Production of wire rod or bar stock made of metal for cold shear cutting - Google Patents
Production of wire rod or bar stock made of metal for cold shear cuttingInfo
- Publication number
- JP2000096151A JP2000096151A JP10266958A JP26695898A JP2000096151A JP 2000096151 A JP2000096151 A JP 2000096151A JP 10266958 A JP10266958 A JP 10266958A JP 26695898 A JP26695898 A JP 26695898A JP 2000096151 A JP2000096151 A JP 2000096151A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- heating
- wire rod
- shear cutting
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷間で剪断による
切断などを行う際、切断片断面に発生するだれを低減さ
せることのできる冷間剪断切断用の金属製線材または棒
材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal wire or rod for cold shearing cutting, which can reduce dripping occurring in the cross section of a cut piece when performing cutting by cold shearing or the like. About.
【０００２】[0002]
【従来の技術】例えば、冷間鍛造を行う場合、図４に示
すように、まず、初めに、ストッパ１２で移動を拘束し
た線材２を固定刃１４と移動刃１３とで剪断による切断
を行うことによって、線材１５の切断加工が行われる。
このとき、線材１５の切断面には、図３に示すようなだ
れが生じ、切断性の悪い線材１５では、より多くのだれ
が発生する。だれの量が多いと、次工程の冷間鍛造時に
金型の形状に対し充分に肉がはらず欠肉となり、鍛造製
品の精度の悪化をもたらす。2. Description of the Related Art For example, when cold forging is performed, first, as shown in FIG. 4, the wire rod 2 whose movement is restricted by a stopper 12 is cut by a fixed blade 14 and a movable blade 13 by shearing. As a result, the wire 15 is cut.
At this time, drooping occurs as shown in FIG. 3 on the cut surface of the wire 15, and more droop occurs in the wire 15 having poor cutting properties. If the amount is too large, the thickness of the mold will not be sufficiently reduced during the cold forging in the next step, resulting in a lack of thickness, resulting in deterioration of the accuracy of the forged product.
【０００３】これに対し、引抜き加工を施して線材の硬
さを全体的に高くすることによって、剪断時の線材端面
のだれを抑え、切断片形状を良好にすることが一般に広
く行われている（『材料とプロセス』Vol.9(1996)p.34
7）。しかし、上記のように、線材の硬さを全体として
高くすることにより、線材の端面のだれを抑える方法で
は、剪断切断時の切断荷重や冷間鍛造時の鍛造荷重が必
然的に大きくなり、刀具や金型の寿命が短くなるという
問題があった。[0003] On the other hand, it is generally widely practiced to increase the hardness of the wire as a whole by performing a drawing process, thereby suppressing the dripping of the end face of the wire during shearing and improving the shape of the cut piece. ("Materials and Process" Vol.9 (1996) p.34
7). However, as described above, by increasing the hardness of the wire as a whole, in the method of suppressing the droop of the end face of the wire, the cutting load during shear cutting and the forging load during cold forging inevitably increase, There was a problem that the life of the sword and the mold was shortened.
【０００４】[0004]
【発明が解決しようとする課題】そこで、ダイスアプロ
−チ角度の高いダイスによる伸線によって表面だけ硬さ
を増大させた鋼線があるが（特願平９−８９９３３
号）、ダイスアプロ−チ角度が大きすぎると、鋼線の表
面に大きな引張応力が生じることによってカッピー破断
となるおそれがあるため、製造時に充分な注意を払う必
要があるという問題があった。Therefore, there is a steel wire whose hardness is increased only on the surface by wire drawing with a die having a high die approach angle (Japanese Patent Application No. 9-89933).
If the die approach angle is too large, a large tensile stress is generated on the surface of the steel wire, which may cause a cuppy break. Therefore, there has been a problem that sufficient care must be taken during manufacturing.
【０００５】本発明は、上記問題点に着目してなされた
もので、その目的は、金属製線材または棒材の表面の硬
さを増大させることにより、切断片のだれの低減を図
り、もって冷間鍛造後の品質を向上させることのできる
冷間剪断切断用の金属製線材または棒材の製造方法を提
供することにある。The present invention has been made in view of the above problems, and has as its object to reduce the droop of cut pieces by increasing the hardness of the surface of a metal wire or rod. It is an object of the present invention to provide a method of manufacturing a metal wire or a rod for cold shear cutting, which can improve the quality after cold forging.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成する本発
明のうち、請求項１に記載の発明は、断面形状が円また
は異形である金属製線材または棒材を連続的に熱処理す
ることにより製造する冷間剪断切断用の金属製線材また
は棒材の製造方法において、ストランド状に形成した線
材または棒材の少なくとも表面を均一に加熱する処理を
行った後、線材または棒材の表面を均一に急速冷却する
処理を行い、表面から直径または厚みの１／１０の位置
までの表面硬さを内部より高い値としたことを特徴とす
る。Means for Solving the Problems Among the present invention to achieve the above object, the invention according to claim 1 is characterized by continuously heat-treating a metal wire or rod having a circular or irregular cross-sectional shape. In the method of manufacturing a metal wire or bar for cold shear cutting to be manufactured, after performing a process of uniformly heating at least the surface of the wire or bar formed in a strand shape, the surface of the wire or bar is uniformly formed. The surface hardness from the surface to the position of 1/10 of the diameter or thickness is set to a value higher than that of the inside.
【０００７】また、請求項２に記載の発明は、前記加熱
する処理が１）誘導加熱、２）電気抵抗線加熱、３）直
接通電加熱、のいずれかであることを特徴とし、請求項
３に記載の発明は、前記急速冷却する処理が１）水また
は油中に浸漬する、２）水または油または圧縮空気を吹
き付ける、のいずれかであることを特徴とする。これに
より、金属製線材または棒材の表面の硬さを増大させ、
切断片のだれの低減を図り、剪断による切断性を向上さ
せることができる。The invention according to claim 2 is characterized in that the heating treatment is any of 1) induction heating, 2) electric resistance wire heating, and 3) direct current heating. In the invention described in (1), the rapid cooling treatment is one of 1) immersion in water or oil, and 2) blowing of water or oil or compressed air. This increases the hardness of the surface of the metal wire or rod,
It is possible to reduce the dripping of the cut pieces and improve the cuttability by shearing.
【０００８】[0008]
【発明の実施の形態】（実施例１）以下、本発明に係る
実施例１を図面を参照して詳細に説明する。図１は、冷
間剪断切断用の金属製線材の製造装置を示す構成説明図
である。この製造装置は、通常、コイルまたは束状で扱
われる線材２を１本の状態（ストランド状）で連続的に
繰り出し、移動させながら表面を均一に加熱する処理を
行った後、線材２の表面を均一に急速冷却する処理を行
う装置である。(Embodiment 1) Hereinafter, Embodiment 1 according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration explanatory view showing an apparatus for manufacturing a metal wire for cold shear cutting. This manufacturing apparatus usually performs a process of unwinding a wire 2 handled in a coil or a bundle in a single state (strand shape), heating the surface uniformly while moving the wire 2, and then moving the surface of the wire 2. This is a device that performs a process of rapidly and uniformly cooling.
【０００９】高炭素クロム軸受鋼（ＳＵＪ２）をφ１２
ｍｍに条鋼圧延し、球状化焼なまし、脱スケール、リン
酸塩皮膜処理、伸線加工を経て直径φ１０．４ｍｍとし
た線材２を用い、この線材２は、１本の状態（ストラン
ド状）でペイオフ装置１から繰り出され、ガイドローラ
３、矯正ローラ４、洗浄装置５、加熱装置６、保持炉
７、冷却装置８、引抜きキャプスタン９およびベンディ
ングローラ１０を経て巻取機１１に巻き取られる。前記
加熱装置６では、線材２が誘導コイル６ａにより加熱温
度７００℃で加熱処理される。前記保持炉７では、線材
２が炉内の通過時間だけ断熱材により７００℃に近い保
持温度で熱処理される。前記冷却装置８では、線材２の
表面がスプレー水冷により急速冷却される。High carbon chromium bearing steel (SUJ2) with φ12
mm, a spheroidizing annealing, descaling, phosphate coating treatment, wire drawing, and a wire 2 having a diameter of 10.4 mm are used. This wire 2 is in a single state (strand shape). And is taken up by a winder 11 through a guide roller 3, a straightening roller 4, a cleaning device 5, a heating device 6, a holding furnace 7, a cooling device 8, a drawing capstan 9, and a bending roller 10. . In the heating device 6, the wire 2 is heated at a heating temperature of 700 ° C. by the induction coil 6a. In the holding furnace 7, the wire 2 is heat-treated at a holding temperature close to 700 ° C. by the heat insulating material for the passage time in the furnace. In the cooling device 8, the surface of the wire 2 is rapidly cooled by spray water cooling.
【００１０】次に、前記冷間剪断切断用の金属製線材の
製造装置を用いて冷間剪断切断用の金属製線材の製造方
法を説明する。全長にわたって線材２の表面を均一に熱
処理する場合、通常、コイルまたは束状で扱われる線材
２を１本の状態（ストランド状）で連続的に繰り出し、
巻き取られるまでに、線材２は、まず、加熱装置６によ
り加熱温度７００℃で加熱処理され、保持炉７により一
定時間だけ７００℃に近い保持温度で熱処理される。次
いで、冷却装置８のスプレー水冷により線材２の表面が
急速冷却される。Next, a method of manufacturing a metal wire for cold shear cutting using the above-described apparatus for manufacturing a metal wire for cold shear cutting will be described. When the surface of the wire 2 is heat-treated uniformly over the entire length, the wire 2 usually handled in a coil or a bundle is continuously fed out in a single state (strand shape).
Before winding, the wire 2 is first heat-treated at a heating temperature of 700 ° C. by the heating device 6 and is heat-treated by the holding furnace 7 at a holding temperature close to 700 ° C. for a certain time. Next, the surface of the wire 2 is rapidly cooled by spray water cooling of the cooling device 8.
【００１１】このように、適切な加熱温度と冷却速度と
を与えることによって、表面の硬さが内部より高い線材
２を得ることができる。線材２の表面のみ硬さが高くな
る理由は、内部に比べ表面の冷却速度を速くすることに
より、内部より表面の結晶格子に乱れが多くなることに
起因する。発明者らが究明した結果、φ１０．４ｍｍＳ
ＵＪ２鋼線の７００℃加熱後水冷の処理によって、結晶
格子の乱れを示す回折Ｘ線半価幅の値が内部の１．６°
に対して表面が１．９°であった。As described above, by giving appropriate heating temperature and cooling rate, it is possible to obtain the wire 2 having a surface hardness higher than that of the inside. The reason that the hardness of only the surface of the wire 2 is higher is that the crystal lattice of the surface is more disordered than the inside by increasing the cooling rate of the surface compared to the inside. As a result of the inventors' investigation, φ10.4 mmS
By heating the UJ2 steel wire at 700 ° C. and then water-cooling, the value of the half-width of the diffracted X-ray showing the disorder of the crystal lattice is 1.6 ° inside.
Was 1.9 °.
【００１２】上記の理由から得られる線材２は、冷間鍛
造時の金型の寿命の点から、線材２は、表面から直径の
１／１０の位置までの硬さを内部より高くすることが好
ましい。図６に示すように、直径の１／１０の位置より
内部まで硬さを上げると、冷間鍛造時の金型の寿命が著
しく低下する。図２は、得られた線材の横断面硬さ分布
を熱処理前のそれと比較して示す。内部は軟化焼なまし
されながらも表面から１ｍｍまでの部位（表面から直径
の約１／１０まで部位）は内部より硬さが高い結果が得
られる。From the viewpoint of the life of the die during cold forging, the hardness of the wire 2 obtained from the above reasons can be increased from the surface to a position 1/10 of the diameter from the inside. preferable. As shown in FIG. 6, when the hardness is increased from the position of 1/10 of the diameter to the inside, the life of the mold at the time of cold forging is significantly reduced. FIG. 2 shows the cross-sectional hardness distribution of the obtained wire in comparison with that before the heat treatment. Although the inside is softened and annealed, a portion having a height of 1 mm from the surface (a portion having a diameter of about 1/10 from the surface) has a higher hardness than the inside.
【００１３】表１は、得られた線材を切断片の長さ
（Ｌ）／直径（Ｄ）が２．３となるように切断したとき
のだれ量を示す。比較として通常の軟化焼なましによっ
て表面から中心までの全断面にわたり硬さがＨｖ２００
の線材の切断だれ量も合わせて示す。この時のだれ量は
図３に示すａ部およびｂ部の長さであり、オフカット側
とは図４において切断時に移動しながら切断された面で
あり、リメインダ側とは図４において切断時に固定され
て切断された面（ストッパ１２にあたる面）を意味す
る。表１に示すように、線材２の表面の硬さを上げるこ
とによりだれの減少を図れることが確認された。Table 1 shows the droop amount when the obtained wire was cut so that the length (L) / diameter (D) of the cut piece was 2.3. As a comparison, the hardness is Hv200 over the entire cross section from the surface to the center by ordinary soft annealing.
The amount of dripping of the wire rod is also shown. The dripping amount at this time is the length of the portions a and b shown in FIG. 3, the off-cut side is the surface cut while moving at the time of cutting in FIG. A fixed and cut surface (a surface corresponding to the stopper 12) is meant. As shown in Table 1, it was confirmed that by reducing the hardness of the surface of the wire 2, it is possible to reduce the droop.
【００１４】[0014]
【表１】 [Table 1]
【００１５】（実施例２）前記実施例１では、線材２と
しては、高炭素クロム軸受鋼（ＳＵＪ２）をφ１２ｍｍ
に条鋼圧延し、球状化焼なまし、脱スケール、リン酸塩
皮膜処理、伸線を経てφ１０．４ｍｍの線材にしたもの
を用いたが、実施例２では、高炭素クロム軸受鋼（ＳＵ
Ｊ２）をφ１２ｍｍに条鋼圧延し、球状化焼なまし、脱
スケール、リン酸塩皮膜処理、φ１０．４ｍｍ伸線を経
たのち、さらに球状化焼なましを施し、全断面が硬さＨ
ｖ１８０である焼なまし線材とした。その後、この焼な
まし線材を、図１に示す装置を用いて熱処理を施した。
その時の処理条件は実施例１と同じである。(Embodiment 2) In the embodiment 1, as the wire rod 2, high carbon chromium bearing steel (SUJ2) is φ12 mm.
In the second embodiment, a high-carbon chromium bearing steel (SU) was used, which had been subjected to strip steel rolling, spheroidizing annealing, descaling, phosphate coating treatment, and wire drawing to a φ10.4 mm wire.
J2) was rolled into a steel strip having a diameter of 12 mm, spheroidized, descaled, treated with a phosphate film, drawn through a 10.4 mm wire, and then subjected to spheroidizing annealing.
An annealed wire having v180 was used. Thereafter, the annealed wire was subjected to a heat treatment using the apparatus shown in FIG.
The processing conditions at that time are the same as in the first embodiment.
【００１６】図５は、得られた線材の横断面硬さ分布を
熱処理前のそれと比較して示す。実施例２の製造方法を
用いることにより、適用される線材が焼なまし材であっ
ても、内部の硬さを変えることなく表面のみ硬さを上げ
ることができ、切断性を向上させることができる。FIG. 5 shows the distribution of the cross-sectional hardness of the obtained wire in comparison with that before the heat treatment. By using the manufacturing method of Example 2, even if the applied wire is an annealed material, it is possible to increase the hardness only on the surface without changing the internal hardness, and to improve the cuttability. it can.
【００１７】（他の実施例）なお、本発明は、前記実施
例１、２に限定されるものでなく、種々の改変が可能で
あることは勿論である。例えば、実施例１では、誘導コ
イル６ａによる誘導加熱により加熱処理する場合につい
て説明したが、これに限らず、電気抵抗線加熱あるいは
直接通電加熱により加熱処理することもできる。また、
実施例１では、スプレー水冷により線材２の表面を急速
冷却する場合について説明したが、これに限らず、水あ
るいは油中に浸漬し、または油や圧縮空気を吹き付ける
ことにより線材２の表面を急速冷却することもできる。
また、実施例１、２では、断面形状が円である金属製線
材に適用して説明したが、これに限らす、断面形状が円
である金属製棒材または断面形状が円以外の異形（例え
ば、図７に示す矩形）である金属製線材または棒材にお
いても、厚みｔの１／１０までの硬さを内部より高くす
ることによって剪断による切断性を向上させることもで
きる。(Other Embodiments) The present invention is not limited to the first and second embodiments, and it is needless to say that various modifications can be made. For example, in the first embodiment, the case where the heat treatment is performed by the induction heating by the induction coil 6a is described. However, the heat treatment is not limited thereto, and the heat treatment may be performed by the electric resistance wire heating or the direct current heating. Also,
In the first embodiment, the case where the surface of the wire 2 is rapidly cooled by spray water cooling is described. However, the present invention is not limited to this, and the surface of the wire 2 is rapidly cooled by dipping in water or oil, or spraying oil or compressed air. It can also be cooled.
In the first and second embodiments, the present invention is applied to a metal wire having a circular cross section. However, the present invention is not limited to this, and a metal bar having a circular cross section or an irregular shape other than a circle ( For example, even in the case of a metal wire or rod having a rectangular shape shown in FIG. 7), the cutability by shearing can be improved by increasing the hardness up to 1/10 of the thickness t from the inside.
【００１８】[0018]
【発明の効果】以上、説明したように、本発明によれ
ば、金属製線材または棒材において、その表面から直径
の１／１０までの硬さを内部より高くすることができる
ため、切断片のだれを減少させ、冷間鍛造後の製品精度
を向上させることができる。また、本発明によれば、熱
処理によって材料の硬さを制御する方法であるため、熱
処理による硬さ上昇可能範囲内であれば、特に硬さの範
囲に制限がなく、伸線のような工具との接触によるきず
の恐れも少ないという利点もある。As described above, according to the present invention, the hardness of the metal wire or rod from the surface to 1/10 of the diameter can be made higher than that of the inside. It is possible to reduce drooling and improve product accuracy after cold forging. Further, according to the present invention, since the method of controlling the hardness of the material by heat treatment, as long as the hardness can be increased by heat treatment, there is no particular limitation on the range of hardness, tools such as wire drawing There is also an advantage that there is less danger of flaws due to contact with the substrate.
【図１】冷間剪断切断用の金属製線材または棒材の製造
方法に直接使用する装置を示す構成説明図である。FIG. 1 is a configuration explanatory view showing an apparatus used directly in a method for producing a metal wire or a rod for cold shear cutting.
【図２】熱処理前後における線材の横断面の硬さ分布を
示すグラフである。FIG. 2 is a graph showing a hardness distribution of a cross section of a wire before and after a heat treatment.
【図３】線材の切断片のだれ測定部位を示す説明図であ
る。FIG. 3 is an explanatory view showing a dripping measurement site of a cut piece of a wire.
【図４】線材の切断加工方法を例示する要部の断面図で
ある。FIG. 4 is a sectional view of a main part illustrating a method of cutting a wire rod;
【図５】線材の横断面の硬さ分布を示すグラフである
（焼なまし材の場合）。FIG. 5 is a graph showing a hardness distribution of a cross section of a wire (in the case of an annealed material).
【図６】硬化層の厚さとヘッダー工具寿命および切断性
の関係を示すグラフである。FIG. 6 is a graph showing the relationship between the thickness of a hardened layer and the service life and cutability of a header tool.
【図７】断面異形の線材の場合の硬化層を例示する断面
図である。FIG. 7 is a cross-sectional view illustrating a cured layer in the case of a wire having an irregular cross section.
１ ペイオフ装置 ２ 線材 ３ ガイドローラ ４ 矯正ローラ ５ 洗浄装置 ６ 加熱装置 ７ 保持炉 ８ 冷却装置 ９ 引抜きキャプスタン １０ ベンディングローラ １１ 巻取機 １２ ストッパ １３ 移動刃 １４ 固定刃 １５ 線材 ｔ 厚み DESCRIPTION OF SYMBOLS 1 Pay-off device 2 Wire rod 3 Guide roller 4 Straightening roller 5 Cleaning device 6 Heating device 7 Holding furnace 8 Cooling device 9 Drawing capstan 10 Bending roller 11 Winding machine 12 Stopper 13 Moving blade 14 Fixed blade 15 Wire rod t Thickness
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ２１Ｄ 9/62 １０２ Ｃ２１Ｄ 9/62 １０２ (72)発明者 高 橋 勇 治 富山県新湊市八幡町３−10−15 日本高周 波鋼業 株式会社富山製造所内 Ｆターム(参考） 4K042 AA14 BA03 BA13 BA14 DA01 DB01 DB02 DB07 DD02 DD03 DD05 DE02 DF01 4K043 AA02 CA03 CA04 CA05 CB01 CB03 DA01 EA07 FA11 GA05──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C21D 9/62 102 C21D 9/62 102 (72) Inventor Yuji Takahashi 3- Yawatacho, Shinminato-shi, Toyama 10-15 Japan High Frequency Steel Industry Toyama Works F-term (reference) 4K042 AA14 BA03 BA13 BA14 DA01 DB01 DB02 DB07 DD02 DD03 DD05 DE02 DF01 4K043 AA02 CA03 CA04 CA05 CB01 CB03 DA01 EA07 FA11 GA05
Claims (3)
材または棒材を連続的に熱処理することにより製造する
冷間剪断切断用の金属製線材または棒材の製造方法にお
いて、 ストランド状に形成した線材または棒材の少なくとも表
面を均一に加熱する処理を行った後、線材または棒材の
表面を均一に急速冷却する処理を行い、表面から直径ま
たは厚みの１／１０の位置までの表面硬さを内部より高
い値としたことを特徴とする冷間剪断切断用の金属製線
材または棒材の製造方法。1. A method for producing a metal wire or rod for cold shear cutting, which is produced by continuously heat-treating a metal wire or rod having a circular or irregular cross-sectional shape, comprising: After performing a process of uniformly heating at least the surface of the formed wire or bar, a process of rapidly cooling the surface of the wire or bar uniformly is performed, and the surface hardness from the surface to a position of 1/10 of the diameter or thickness is reduced. A method for producing a metal wire or rod for cold shear cutting, wherein the height is set to a value higher than the inside.
（２）電気抵抗線加熱、（３）直接通電加熱、のいずれ
かであることを特徴とする請求項１記載の冷間剪断切断
用の金属製線材または棒材の製造方法。2. The heating treatment includes: (1) induction heating;
2. The method for producing a metal wire or rod for cold shear cutting according to claim 1, wherein the method is any of (2) electric resistance wire heating and (3) direct current heating.
は油中に浸漬する、（２）水または油または圧縮空気を
吹き付ける、のいずれかであることを特徴とする請求項
１記載の冷間剪断切断用の金属製線材または棒材の製造
方法。3. The rapid cooling treatment according to claim 1, wherein: (1) immersion in water or oil; and (2) blowing of water, oil or compressed air. A method for producing a metal wire or rod for cold shear cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10266958A JP2000096151A (en) | 1998-09-21 | 1998-09-21 | Production of wire rod or bar stock made of metal for cold shear cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10266958A JP2000096151A (en) | 1998-09-21 | 1998-09-21 | Production of wire rod or bar stock made of metal for cold shear cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000096151A true JP2000096151A (en) | 2000-04-04 |
Family
ID=17438068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10266958A Pending JP2000096151A (en) | 1998-09-21 | 1998-09-21 | Production of wire rod or bar stock made of metal for cold shear cutting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000096151A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923124A (en) * | 2016-05-11 | 2018-04-17 | 朝日英达科株式会社 | Tinsel |
-
1998
- 1998-09-21 JP JP10266958A patent/JP2000096151A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923124A (en) * | 2016-05-11 | 2018-04-17 | 朝日英达科株式会社 | Tinsel |
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