JPH0820822A - Continuous bright annealing method of austenitic stainless bar steel - Google Patents
Continuous bright annealing method of austenitic stainless bar steelInfo
- Publication number
- JPH0820822A JPH0820822A JP6180750A JP18075094A JPH0820822A JP H0820822 A JPH0820822 A JP H0820822A JP 6180750 A JP6180750 A JP 6180750A JP 18075094 A JP18075094 A JP 18075094A JP H0820822 A JPH0820822 A JP H0820822A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- steel bar
- zone
- austenitic stainless
- cooling
- 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.)
- Granted
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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、オーステナイト系ス
テンレス（以下、単にステンレスという）棒鋼の連続光
輝焼鈍方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous bright annealing method for austenitic stainless steel (hereinafter simply referred to as stainless steel) steel bar.
【０００２】[0002]
【従来の技術】機械部品、例えばステンレス製のボルト
を冷間鍛造で製造する場合、素材のステンレス棒鋼を適
当な外径まで圧延した後、酸洗して酸化皮膜を取り除
き、所要の外径まで引抜き、光輝焼鈍して軟らかくした
後、ボルトに成形するのが一般的である。2. Description of the Related Art When manufacturing mechanical parts, such as stainless steel bolts, by cold forging, after rolling the raw material stainless steel bar to an appropriate outer diameter, it is pickled to remove the oxide film and to the required outer diameter. It is general that after drawing, bright annealing and softening, it is formed into a bolt.
【０００３】ところで、ステンレス棒鋼を引抜く時、断
面減少率が大きい場合には加工硬化を起こして硬くな
り、後の成形が出来なくなることから、軟らかくするた
め光輝焼鈍が行われている。ところで、この時の焼鈍が
大気中焼鈍でなくて光輝焼鈍であるのは、引抜いた時に
折角磨棒状態であるのものを大気中で加熱焼鈍すると表
面が酸化して黒皮材になってしまうからである。By the way, when a stainless steel bar is pulled out, if the area reduction rate is large, work hardening occurs and the material becomes hard, and subsequent molding cannot be performed. Therefore, bright annealing is performed to soften the steel. By the way, the annealing at this time is not annealing in the atmosphere but bright annealing. The reason is that when a sheet that is in the state of a bent rod when drawn is heated and annealed in the atmosphere, the surface oxidizes and becomes a black skin material. Because.
【０００４】従来のステンレス棒鋼の光輝焼鈍方法は不
活性雰囲気の焼鈍炉内でステンレス棒鋼をγ単相範囲、
一般に１０００℃以上に加熱し、所定時間保持した後、
その加熱を停止して炉外に出し急冷することが行われて
いる。The conventional bright annealing method for a stainless steel bar is that the stainless steel bar is in the γ single phase range in an annealing furnace in an inert atmosphere.
Generally, after heating to 1000 ° C or higher and holding for a predetermined time,
It is practiced to stop the heating and to take it out of the furnace to quench it.
【０００５】[0005]
【発明が解決しようとする課題】しかし、従来の光輝焼
鈍方法では長尺のステンレス棒鋼を収容できる大型の焼
鈍炉を必要とし、しかもバッチ式でしか処理できず、作
業性が悪いという問題があった。However, the conventional bright annealing method requires a large annealing furnace capable of accommodating a long stainless steel bar, and has a problem that it can be processed only in a batch system and the workability is poor. It was
【０００６】この発明は、かかる問題点に鑑み、長尺の
ステンレス棒鋼を効率よく連続焼鈍できるようにしたス
テンレス棒鋼の連続光輝焼鈍方法を提供することを課題
とする。In view of the above problems, it is an object of the present invention to provide a continuous bright annealing method for a long stainless steel bar which can be efficiently annealed continuously.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明に係るス
テンレス棒鋼の連続光輝焼鈍方法は、長尺のステンレス
棒鋼を加熱帯から冷却帯に走行させて連続光輝焼鈍する
にあたり、加熱帯と冷却帯とを雰囲気ガス継帯で結合
し、加熱帯としてステンレス棒鋼Ｗの入口と出口とか一
直線上に形成された高周波誘導加熱機を用い、加熱帯の
搬送終端側から搬送始端側に向けて雰囲気ガスを供給し
つつ、ステンレス棒鋼を加熱帯の入口から出口に向けて
送ってγ単相温度範囲に加熱した後、該ステンレス棒鋼
を冷却帯の入口から出口に送って急冷するようにしたこ
とを特徴とする。Therefore, the continuous bright annealing method for a stainless steel bar according to the present invention comprises a heating zone and a cooling zone for running a long stainless steel bar from a heating zone to a cooling zone for continuous bright annealing. Are connected by an atmosphere gas joint zone, and a high frequency induction heater formed in a straight line with the inlet and outlet of the stainless steel bar W is used as a heating zone, and the atmosphere gas is fed from the conveying end side of the heating zone toward the conveying start side. While supplying, the stainless steel bar is sent from the inlet of the heating zone toward the outlet to heat it in the γ single phase temperature range, and then the stainless steel bar is sent from the inlet of the cooling zone to the outlet to be rapidly cooled. To do.
【０００８】誘導加熱機を使用したのは急速加熱が可能
であり、棒鋼の誘導加熱機内搬送中にこれを所定温度に
迅速に加熱できるからである。The induction heater is used because rapid heating is possible and it can be quickly heated to a predetermined temperature during the transportation of the steel bar in the induction heater.
【０００９】ステンレス棒鋼を光輝焼鈍する場合には各
誘導加熱機内に雰囲気ガスを流すが、雰囲気ガスは誘導
加熱機の搬送方向下流側から上流側に向けて流し、ステ
ンレス棒鋼の送り方向に対して向流とするのが好まし
い。雰囲気ガスはアンモニア分解ガス（Ｎ2 ＋Ｈ2 ガ
ス）、Ａｒガス等の不活性ガスを使用する。When the stainless steel bar is brightly annealed, an atmospheric gas is made to flow in each induction heating machine. The atmospheric gas is made to flow from the downstream side to the upstream side of the induction heating machine in the conveying direction, and the stainless steel bar is fed in the feeding direction. Countercurrent flow is preferred. As the atmosphere gas, an ammonia decomposition gas (N 2 + H 2 gas), an inert gas such as Ar gas is used.
【００１０】また、誘導加熱機に雰囲気ガスを流す場
合、誘導加熱機の入口を開放したままとすると、雰囲気
ガスが大気に逃げてしまう。そこで、誘導加熱機の入口
を封鎖しうる封鎖板の中央に挿通穴を形成し、これに棒
鋼をスライド自在に挿通して誘導加熱機内に送り込み、
誘導加熱機の入口を封鎖するのがよい。Further, when the atmospheric gas is supplied to the induction heater, if the inlet of the induction heater is left open, the atmospheric gas escapes to the atmosphere. Therefore, an insertion hole is formed in the center of the sealing plate that can block the inlet of the induction heater, and a steel bar is slidably inserted into the insertion hole and fed into the induction heater.
The induction heater inlet should be blocked.
【００１１】冷却帯にはステンレス棒鋼の入口と出口と
が一直線上に形成された冷却液槽を用い、焼鈍に対応し
た温度特性でもって急冷する。具体的には、加熱帯とし
てステンレス棒鋼の入口と出口とか一直線上に形成され
た高周波誘導加熱機を用い、冷却帯として側壁にステン
レス棒鋼の送込み開口と送出し開口とが対向して形成さ
れ、冷却液を常時供給して送込み開口及び送出し開口よ
り高い槽内冷却液面に保持された冷却液槽を用い、ステ
ンレス棒鋼を高周波誘導加熱機の入口から出口に向けて
連続的に搬送しつつ加熱した後、加熱されたステンレス
棒鋼を冷却液槽の送込み開口から送出し開口に向けて搬
送し、冷却液中に連続的に潜らせて冷却する。A cooling liquid tank in which the inlet and the outlet of stainless steel bars are formed in a straight line is used in the cooling zone, and quenching is performed with temperature characteristics corresponding to annealing. Specifically, a high-frequency induction heater formed in a straight line with the inlet and outlet of the stainless steel bar is used as the heating zone, and the inlet and outlet of the stainless steel bar are formed facing each other on the side wall as the cooling zone. , Continuously transporting stainless steel bar from the inlet to the outlet of the high-frequency induction heater by using the cooling liquid tank in which the cooling liquid is constantly supplied to keep the cooling liquid level in the tank higher than the inlet opening and the outlet opening. After heating while heating, the heated stainless steel bar is delivered from the feed opening of the cooling liquid tank and conveyed toward the opening, and is continuously dipped in the cooling liquid to be cooled.
【００１２】[0012]
【作用及び発明の効果】本発明によれば、誘導加熱機に
雰囲気ガスを供給しながらステンレス棒鋼を送り込んで
加熱した後、そのまま冷却帯に送り込んで急冷するよう
にしたので、長尺のステンレス棒鋼の光輝焼鈍を連続的
に行うことができ、作業性を大幅に向上できる。According to the present invention, the stainless steel bar is fed while being supplied with the atmospheric gas to the induction heater to heat it, and then the stainless steel bar is directly sent to the cooling zone to be rapidly cooled. The bright annealing can be continuously performed, and the workability can be significantly improved.
【００１３】しかも、高周波誘導加熱を採用したので、
ステンレス棒鋼温度を比較的簡単にかつ精度よく制御で
きる。Moreover, since high frequency induction heating is adopted,
The stainless steel bar temperature can be controlled relatively easily and accurately.
【００１４】[0014]
【実施例】以下、本発明の実施例を図について説明す
る。図１ないし図４は本発明の一実施例によるステンレ
ス棒鋼の連続光輝焼鈍装置を示す。図において、連続光
輝焼鈍装置は加熱帯６と冷却帯８とを雰囲気ガス継帯７
で結合して構成され、加熱帯６には作業床上に相互に所
定の間隔をあけかつ入口及び出口を前後に一直線上に並
べて配置した複数、例えば４つの誘導加熱機１が用いら
れている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 4 show a continuous bright annealing apparatus for stainless steel bars according to an embodiment of the present invention. In the figure, the continuous bright annealing apparatus uses a heating zone 6 and a cooling zone 8 as an atmosphere gas joint zone 7
In the heating zone 6, a plurality of, for example, four induction heaters 1 are used which are arranged on the work floor at predetermined intervals and whose inlets and outlets are arranged in a straight line in the front-rear direction.
【００１５】誘導加熱機１は耐火材料、例えばセメント
を所定長さの円筒状に成形し、該耐火材製筒部１０の筒
壁中に水冷銅管１１を長手方向に螺旋状に埋設して構成
され、水冷銅管１１に高周波電流を通電させることによ
って耐火材製筒部１０内を通過するステンレス棒Ｗを誘
導電流にて所望の温度に加熱できるようになっている。
なお、水冷銅管１１には低周波電流を通電してもよく、
加熱すべき材料や加熱条件等に応じて適宜選択する。The induction heater 1 is formed by molding a refractory material, such as cement, into a cylindrical shape having a predetermined length, and burying a water-cooled copper pipe 11 in the longitudinal direction in a cylindrical wall of the cylindrical portion 10 made of the refractory material. The stainless steel rod W passing through the inside of the refractory tube 10 can be heated to a desired temperature by passing a high-frequency current through the water-cooled copper tube 11 with an induced current.
A low frequency current may be passed through the water-cooled copper pipe 11,
It is appropriately selected according to the material to be heated, the heating conditions and the like.
【００１６】また、誘導加熱機１の前後にはステンレス
棒Ｗを搬送するピンチローラ２が配設され、前後の誘導
加熱機１間及び誘導加熱機１と冷却水槽２０との間はシ
ール板４で遮蔽され、誘導加熱機１と冷却水槽２０間の
シール板４によって雰囲気ガス継帯７が構成されてい
る。また、雰囲気ガス継帯７には不活性ガスの供給口３
が設けられ、該供給口３には不活性ガス供給源から延び
る供給パイプ（図示せず）が接続されて不活性ガスが加
熱帯６の搬送終端側から搬送始端側に向けて供給さるよ
うになっている。Further, a pinch roller 2 for conveying the stainless rod W is disposed in front of and behind the induction heating machine 1, and a seal plate 4 is provided between the induction heating machine 1 and the induction heating machine 1 and the cooling water tank 20. The seal plate 4 between the induction heater 1 and the cooling water tank 20 constitutes an atmosphere gas joint 7 which is shielded by the. Further, the atmosphere gas joint 7 is provided with an inert gas supply port 3
Is provided, and a supply pipe (not shown) extending from an inert gas supply source is connected to the supply port 3 so that the inert gas is supplied from the transport end side of the heating zone 6 toward the transport start end side. Has become.
【００１７】次に、ステンレス棒鋼Ｗの焼鈍には加熱後
急冷する必要がある。本例では誘導加熱機１の後に連続
水冷装置を置き、連続的に棒鋼を送り込むようにしてい
る。Next, in order to anneal the stainless steel bar W, it is necessary to heat it and then rapidly cool it. In this example, a continuous water cooling device is placed after the induction heater 1 to continuously feed the steel bars.
【００１８】即ち、図２に示す連続水冷装置において、
冷却水槽２０はほぼ立方体状をなして上面が開放され、
後壁２１は前後方向にスライド自在に設けられ、冷却水
槽２０内の水量を調整しステンレス棒鋼Ｗが出口が常温
まで冷却されるようにしてあり、又後壁２１と側壁との
間はシール部材（図示せず）でシールされている。冷却
水槽２０の前壁及び後壁には棒鋼Ｗの送込み開口２２及
び送出し開口２３が加熱帯６の誘導加熱機１の耐火筒部
の中心軸線上に位置しかつ相互に対向して形成されてい
る。That is, in the continuous water cooling device shown in FIG.
The cooling water tank 20 has a substantially cubic shape with an open upper surface,
The rear wall 21 is provided so as to be slidable in the front-rear direction, the amount of water in the cooling water tank 20 is adjusted so that the outlet of the stainless steel bar W is cooled to room temperature, and a seal member is provided between the rear wall 21 and the side wall. It is sealed with (not shown). On the front wall and the rear wall of the cooling water tank 20, a feed opening 22 and a feed opening 23 for the steel bar W are formed on the central axis of the fireproof tubular portion of the induction heater 1 of the heating zone 6 and opposed to each other. Has been done.
【００１９】冷却水槽２０の下側には送込み開口２２及
び送出し開口２３から流出する冷却水を受ける冷却水受
槽３０が配設され、該冷却水受槽３０と冷却水槽２０と
の間には冷却水パイプ４２とポンプ４１とからなる冷却
水供給装置４０が設けられ、冷却水受槽３０内の冷却水
を冷却水槽２０に循環させ、冷却水槽２０内を送込み開
口２２及び送出し開口２３より高い水位に保持するよう
になっている。Below the cooling water tank 20, a cooling water receiving tank 30 for receiving the cooling water flowing out from the feed opening 22 and the sending opening 23 is arranged, and between the cooling water receiving tank 30 and the cooling water tank 20. A cooling water supply device 40 including a cooling water pipe 42 and a pump 41 is provided, the cooling water in the cooling water receiving tank 30 is circulated to the cooling water tank 20, and the inside of the cooling water tank 20 is fed from the inlet 22 and the outlet 23. It is designed to maintain a high water level.
【００２０】また、冷却水槽２０内には送込み開口２２
の近傍にて噴射ノズル５０が取付ブラケット等で取付け
られ、該噴射ノズル５０は送込み開口２２に向けて設定
されている。これはステンレス棒鋼Ｗを冷却水中に潜ら
せて急冷すると部分的な冷却速度のばらつきでステンレ
ス棒鋼Ｗに曲がりが発生するのを防ぐためである。な
お、６０は温度センサーである。Further, in the cooling water tank 20, a feed opening 22 is provided.
The injection nozzle 50 is attached in the vicinity of with a mounting bracket or the like, and the injection nozzle 50 is set toward the delivery opening 22. This is to prevent the stainless steel bar W from being bent due to partial variation of the cooling rate when the stainless steel bar W is dipped in the cooling water and rapidly cooled. In addition, 60 is a temperature sensor.
【００２１】ステンレス棒鋼Ｗをピンチローラ７で搬送
上流側の誘導加熱機１内に送り込むと、ステンレス棒鋼
Ｗは各誘導加熱機１内を真っ直ぐに搬送され、その搬送
中に誘導電流によって不活性雰囲気中で設定温度に加熱
される。When the stainless steel bar W is fed by the pinch roller 7 into the induction heating machine 1 on the upstream side of the conveyance, the stainless steel bar W is conveyed straight in each induction heating machine 1 and an inert atmosphere is generated by the induction current during the conveyance. Inside is heated to the set temperature.
【００２２】不活性ガスを誘導加熱機１の搬送方向下流
側から上流側に向けて供給すると、不活性ガスが大気に
逃げてしまう。そこで、図４に示すように、中央に挿通
穴を有する封鎖板５を用い、その挿通穴にステンレス棒
Ｗを挿通させ、その状態でステンレス棒Ｗを誘導加熱機
１内に送り込むと、誘導加熱機１の入口は封鎖板５で封
鎖されるので、不活性ガスが大気に逃げることはない。When the inert gas is supplied from the downstream side to the upstream side of the induction heater 1 in the conveying direction, the inert gas escapes to the atmosphere. Therefore, as shown in FIG. 4, a sealing plate 5 having an insertion hole in the center is used, and a stainless rod W is inserted into the insertion hole, and when the stainless rod W is fed into the induction heating machine 1, induction heating is performed. Since the inlet of the machine 1 is blocked by the blocking plate 5, the inert gas does not escape to the atmosphere.
【００２３】誘導加熱機１を出たステンレス棒鋼Ｗはピ
ンチローラ７によってそのまま送込み開口２２から冷却
水槽２０内に送り込まれ、冷却水中を潜って急冷され、
送出し開口２３から冷却水槽２０外方に送り出される。
ステンレス棒鋼Ｗの誘導加熱及び水冷による温度変化を
図１に示す。The stainless steel bar W exiting the induction heater 1 is sent by the pinch roller 7 as it is into the cooling water tank 20 through the feeding opening 22 and dipped in the cooling water to be rapidly cooled.
It is sent out to the outside of the cooling water tank 20 through the sending opening 23.
FIG. 1 shows changes in temperature of the stainless steel bar W due to induction heating and water cooling.
【図１】 本発明の一実施例によるステンレス棒鋼の連
続光輝焼鈍装置における加熱帯６、雰囲気ガス継帯７及
び冷却帯８の一部の概略構成及びそのステンレス棒鋼Ｗ
の温度変化を示す図である。FIG. 1 is a schematic configuration of a part of a heating zone 6, an atmosphere gas joint zone 7 and a cooling zone 8 in a continuous bright annealing apparatus for a stainless steel bar according to an embodiment of the present invention, and its stainless steel bar W.
It is a figure which shows the temperature change of.
【図２】 上記装置における加熱帯６の一部、雰囲気ガ
ス継帯７及び冷却帯８を示す概略構成図である。FIG. 2 is a schematic configuration diagram showing a part of a heating zone 6, an atmosphere gas joint zone 7 and a cooling zone 8 in the above apparatus.
【図３】 上記加熱帯６における誘導加熱機１の構成を
示す拡大斜視図である。FIG. 3 is an enlarged perspective view showing the configuration of the induction heater 1 in the heating zone 6.
【図４】 焼鈍方法を説明するための斜視図である。FIG. 4 is a perspective view for explaining an annealing method.
１ 誘導加熱機 ２ ピンチ
ローラ ３ 不活性ガス供給口 ４ シール
板 ５ 封鎖板 ６ 加熱帯 ７ 雰囲気ガス継帯 ８ 冷却帯 ２０ 冷却水槽 ２２ 送込み
開口 ２３ 送出し開口 Ｗ ステン
レス棒1 Induction heater 2 Pinch roller 3 Inert gas supply port 4 Seal plate 5 Blocking plate 6 Heating zone 7 Atmosphere gas joint zone 8 Cooling zone 20 Cooling water tank 22 Inlet opening 23 Outlet opening W Stainless rod
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２１Ｄ 6/00 １０２ Ａ 9269−4Ｋ 9/28 Ａ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location C21D 6/00 102 A 9269-4K 9/28 A
Claims (4)
を加熱帯から冷却帯に走行させて連続光輝焼鈍するにあ
たり、 加熱帯６と冷却帯８とを雰囲気ガス継帯７で結合し、加
熱帯６としてステンレス棒鋼Ｗの入口と出口とか一直線
上に形成された高周波誘導加熱機１を用い、 加熱帯６の搬送終端側から搬送始端側に向けて雰囲気ガ
スを供給しつつ、オーステナイト系ステンレス棒鋼Ｗを
加熱帯６の入口から出口に向けて送ってオーステナイト
単相温度範囲に加熱した後、該オーステナイト系ステン
レス棒鋼Ｗを冷却帯８の入口から出口に送って急冷する
ようにしたことを特徴とするオーステナイト系ステンレ
ス棒鋼の連続光輝焼鈍方法。1. When heating a long austenitic stainless steel bar from a heating zone to a cooling zone for continuous bright annealing, the heating zone 6 and the cooling zone 8 are joined by an atmosphere gas joint zone 7 to form a heating zone 6. The austenitic stainless steel bar W is added while supplying the atmospheric gas from the transfer end side of the heating zone 6 to the transfer start side by using the high frequency induction heater 1 formed in a straight line between the inlet and the outlet of the stainless steel bar W. The austenitic stainless steel bar W is sent from the inlet to the outlet of the tropical zone 6 to be heated to the austenite single-phase temperature range, and then the austenitic stainless steel bar W is sent to the outlet of the cooling zone 8 to be rapidly cooled. Continuous bright annealing method for stainless steel bars.
導加熱機１の入口を封鎖しうる封鎖板５を用い、該封鎖
板５の挿通穴に棒鋼Ｗをスライド自在に挿通し、高周波
誘導加熱機１の入口を封鎖しつつ棒鋼Ｗを加熱帯６に送
り込むようにした請求項１記載のオーステナイト系ステ
ンレス棒鋼の連続光輝焼鈍方法。2. A sealing plate 5 having a through hole at the center and capable of blocking the entrance of the heating zone 6 of the high frequency induction heater 1, and a steel bar W is slidably inserted into the through hole of the sealing plate 5, The continuous bright annealing method for an austenitic stainless steel bar according to claim 1, wherein the steel bar W is fed into the heating zone 6 while blocking the inlet of the high-frequency induction heater 1.
レス棒鋼Ｗの入口と出口とが一直線上に形成された冷却
液槽を用い、焼鈍に対応した温度特性でもって急冷する
ようにした請求項１記載のオーステナイト系ステンレス
棒鋼の連続光輝焼鈍方法。3. A cooling liquid tank in which an inlet and an outlet of an austenitic stainless steel bar W are formed in a straight line is used as the cooling zone 8 and is rapidly cooled with a temperature characteristic corresponding to annealing. Continuous bright annealing method for austenitic stainless steel bars.
加熱急冷するにあたり、 加熱帯６としてオーステナイト系ステンレス棒鋼Ｗの入
口と出口とか一直線上に形成された高周波誘導加熱機１
を用い、冷却帯８として側壁にオーステナイト系ステン
レス棒鋼Ｗの送込み開口２２と送出し開口２３とが対向
して形成され、冷却液を常時供給して送込み開口２２及
び送出し開口２３より高い槽内冷却液面に保持された冷
却液槽２０を用い、 オーステナイト系ステンレス棒鋼Ｗを高周波誘導加熱機
１の入口から出口に向けて連続的に搬送しつつ加熱した
後、加熱されたオーステナイト系ステンレス棒鋼Ｗを冷
却液槽２０の送込み開口２２から送出し開口２３に向け
て搬送し、冷却液中に連続的に潜らせて冷却するように
した請求項３記載のオーステナイト系ステンレス棒鋼の
連続光輝焼鈍方法。4. A high-frequency induction heating machine 1 formed as a heating zone 6 in a straight line with an inlet and an outlet of an austenitic stainless steel bar W for continuously heating and quenching an austenitic stainless steel bar.
Is used to form a cooling zone 8 in the side wall of which a feed opening 22 and a feed opening 23 of austenitic stainless steel bar W face each other and are higher than the feed opening 22 and the feed opening 23 by constantly supplying the cooling liquid. After the austenitic stainless steel bar W is heated while being continuously conveyed from the inlet to the outlet of the high frequency induction heater 1 using the cooling liquid tank 20 held on the cooling liquid level in the tank, the heated austenitic stainless steel W is heated. The continuous brightening of the austenitic stainless steel bar according to claim 3, wherein the steel bar W is delivered from the delivery opening 22 of the cooling liquid tank 20 and conveyed toward the opening 23 so as to be continuously dipped in the cooling fluid for cooling. Annealing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18075094A JP3511183B2 (en) | 1994-07-08 | 1994-07-08 | Continuous bright annealing method for austenitic stainless steel bars. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18075094A JP3511183B2 (en) | 1994-07-08 | 1994-07-08 | Continuous bright annealing method for austenitic stainless steel bars. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0820822A true JPH0820822A (en) | 1996-01-23 |
| JP3511183B2 JP3511183B2 (en) | 2004-03-29 |
Family
ID=16088668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18075094A Expired - Lifetime JP3511183B2 (en) | 1994-07-08 | 1994-07-08 | Continuous bright annealing method for austenitic stainless steel bars. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3511183B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338708B1 (en) * | 1997-12-17 | 2002-09-05 | 주식회사 포스코 | Method for improving the surface gloss of austenitic stainless bright annealing steel plates |
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| CN115141920A (en) * | 2022-07-06 | 2022-10-04 | 大冶特殊钢有限公司 | Induction heating heat treatment method of austenitic stainless steel bar |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338708B1 (en) * | 1997-12-17 | 2002-09-05 | 주식회사 포스코 | Method for improving the surface gloss of austenitic stainless bright annealing steel plates |
| KR100653134B1 (en) * | 2006-04-25 | 2006-12-04 | 광진실업 주식회사 | A machine for spheroidization |
| JP2015004133A (en) * | 2014-08-06 | 2015-01-08 | 日本冶金工業株式会社 | Surface modification method for stainless steel sheet |
| CN114990315A (en) * | 2022-06-15 | 2022-09-02 | 上海华钢不锈钢有限公司 | Supersonic frequency induction heating stainless steel pipe bright solid solution heat treatment device and process |
| CN115141920A (en) * | 2022-07-06 | 2022-10-04 | 大冶特殊钢有限公司 | Induction heating heat treatment method of austenitic stainless steel bar |
| CN115141920B (en) * | 2022-07-06 | 2023-07-21 | 大冶特殊钢有限公司 | Induction heating heat treatment method for austenitic stainless steel bar |
| WO2023232159A1 (en) * | 2022-07-06 | 2023-12-07 | 大冶特殊钢有限公司 | Method for heat treatment of austenitic stainless steel bar by means of induction heating |
| CN116516136A (en) * | 2023-05-06 | 2023-08-01 | 惠州市君豪盛实业有限公司 | Annealing treatment device and annealing process for stainless steel rod wire |
| CN116516136B (en) * | 2023-05-06 | 2023-10-20 | 惠州市君豪盛实业有限公司 | Annealing treatment device and annealing process for stainless steel rod wire |
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|---|---|
| JP3511183B2 (en) | 2004-03-29 |
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