Deformation correcting device

A deformation correcting device to correct a deformation occurring in a ring shaped article, which has been heated, while the heated ring shaped article is cooled, includes a support table, on which the ring shaped article in a heated condition is placed; a pair of receiving rolls; a press roll provided in opposition to the pair of the receiving rolls with the ring shaped article intervening therebetween; a press roll drive mechanism for driving the press roll between an advanced position, at which the press roll is urged against the outer peripheral surface of the ring shaped article, and a retracted position, at which the press roll is separated away from the outer peripheral surface of the ring shaped article; and a press roll rotating mechanism for rotating the press roll then urged against the ring shaped article by the press roll drive mechanism.

Apparatus to quench a ring-shaped article

An apparatus for quenching a ring shaped article includes a heating station for heating the ring shaped article to a quenching temperature; a primary cooling station for cooling the ring shaped article to a deformation correction initiating temperature; and a secondary cooling station for cooling the ring shaped article down to a temperature lower than a martensitic transformation point. The heating station includes a preheating station for heating by induction heating the ring shaped article to a predetermined preheating temperature near to the quenching temperature and a soaking station for heating the ring shaped article, which has been heated to the preheating temperature by the preheating station, to the quenching temperature within a continuous heating furnace. The preheating station includes a rotary table and a heating coil arranged to straddle between inner and outer peripheral surfaces of the ring shaped article.

リング状品の焼入れ方法および装置

【課題】 焼入れ処理によって生じる熱変形をその焼入れ処理中に矯正することができ、その熱変形矯正は、コストおよび手間をかけずに行え、かつ種々のサイズのリング状品に対して行えるリング状品の焼入れ方法を提供する。 【解決手段】 このリング状品の焼入れ方法は、リング状品Ｗを焼入れ温度まで加熱する加熱過程Ｓ１と、焼入れ温度まで加熱されたリング状品Ｗをマルテンサイト変換点温度よりも高い変形矯正開始温度まで冷却する一次冷却過程Ｓ２と、変形矯正開始温度まで冷却されたリング状品Ｗに対し、このリング状品Ｗの外周面に一対の受けロール３をリング状品Ｗの中心と平行な回転中心軸回りに転動自在に接触させた状態で、前記一対の受けロール３の中間点とリング状品Ｗを介して対向する側から、リング状品Ｗの外周面にリング状品Ｗの中心と平行な回転中心軸回りに回転する加圧ロール４を押付けつつ、マルテンサイト変換点温度よりも低い温度まで冷却する二次冷却過程Ｓ３とを含む。 【選択図】 図１

Quenching method and device of ring-shaped article

Method of quenching a ring-shaped article and apparatus thereof

A method of quenching a ring shaped article includes a heating step (S 1 ) of heating the article (W) to a quenching temperature; a primary cooling step (S 2 ) of cooling the article (W) down to a deformation correction initiating temperature, which is higher than a martensitic transformation point; and a secondary cooling step (S 3 ) of cooling the article (W) down to a temperature lower than the martensitic transformation point by, while a pair of receiving rolls ( 3 ) are held in contact with an outer peripheral surface of the article (W) for rolling motion about an axis of rotation parallel to a center of the article (W), pressing a press roll ( 4 ), rotatable about an axis of rotation parallel to the center of the article (W), against the outer peripheral surface of the article (W) from one side of the article (W) opposite to a point intermediate between the receiving rolls ( 3 ).

リング状品の変形矯正装置

【課題】 リング状品の熱処理過程で生じる熱変形に対して、製造ラインの工程数を増やさず、かつコストおよび手間をかけずに変形矯正することができ、種々のサイズのリング状品にも適用できるリング状品の変形矯正装置を提供する。 【解決手段】 リング状品Ｗを載せる配置台２と、この配置台２上のリング状品Ｗの外周面にそれぞれ転動自在に接触させる一対の受けロール３と、これら一対の受けロール３に前記リング状品４を介して対向して設けられた１個の加圧ロール４とを備える。加熱状態のリング状品Ｗを配置台２に載せ、加圧ロール進退機構１０により加圧ロール４を前記リング状品Ｗの外周面に押付け、加圧ロール回転駆動機構１５により加圧ロール４を回転させながら、リング状品Ｗを冷却する。 【選択図】 図１

連続加熱炉と組み合わせた環状部材の連続誘導予熱装置

【課題】 連続加熱炉と組み合わせた環状部材の連続誘導予熱装置 【解決手段】 真空又は無酸化の雰囲気制御機能を有する被加熱環状部材Ｗを加熱室に装入する装入室１３と環状部材Ｗを誘導加熱する加熱室１２と、真空又は無酸化、若しくは連結する連続加熱炉２６の雰囲気に雰囲気制御機能を有する加熱された環状部材を移送する移送室１４とを備え、被加熱環状部材Ｗを装入室１３に装入する装入手段１９と、装入室１３から加熱室１２に移動する第１移動手段２０と、加熱室１２から移送室１４に移動する第２移動手段２１と、移送室１４から連続加熱炉２６に搬送する移送手段２２とが設けられ、被加熱環状部材Ｗを真空又は無酸化の雰囲気中で連続装入し、予熱温度に加熱し、移送室１４から連結された連続加熱炉２６の雰囲気に合わせて連続加熱炉２６に搬送して所定温度まで加熱する。 【選択図】 図１

Deformation correcting device

A deformation correcting device to correct a deformation occurring in a ring shaped article, which has been heated, while the heated ring shaped article is cooled, includes a support table, on which the ring shaped article in a heated condition is placed; a pair of receiving rolls; a press roll provided in opposition to the pair of the receiving rolls with the ring shaped article intervening therebetween; a press roll drive mechanism for driving the press roll between an advanced position, at which the press roll is urged against the outer peripheral surface of the ring shaped article, and a retracted position, at which the press roll is separated away from the outer peripheral surface of the ring shaped article; and a press roll rotating mechanism for rotating the press roll then urged against the ring shaped article by the press roll drive mechanism.

Apparatus to quench a ring-shaped article

An apparatus for quenching a ring shaped article includes a heating station for heating the ring shaped article to a quenching temperature; a primary cooling station for cooling the ring shaped article to a deformation correction initiating temperature; and a secondary cooling station for cooling the ring shaped article down to a temperature lower than a martensitic transformation point. The heating station includes a preheating station for heating by induction heating the ring shaped article to a predetermined preheating temperature near to the quenching temperature and a soaking station for heating the ring shaped article, which has been heated to the preheating temperature by the preheating station, to the quenching temperature within a continuous heating furnace. The preheating station includes a rotary table and a heating coil arranged to straddle between inner and outer peripheral surfaces of the ring shaped article.