JP2007262450A - Quality-guarantee system in high frequency induction heating facility - Google Patents

Quality-guarantee system in high frequency induction heating facility Download PDF

Info

Publication number
JP2007262450A
JP2007262450A JP2006086053A JP2006086053A JP2007262450A JP 2007262450 A JP2007262450 A JP 2007262450A JP 2006086053 A JP2006086053 A JP 2006086053A JP 2006086053 A JP2006086053 A JP 2006086053A JP 2007262450 A JP2007262450 A JP 2007262450A
Authority
JP
Japan
Prior art keywords
heat treatment
product
hardened layer
processing state
frequency
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
Application number
JP2006086053A
Other languages
Japanese (ja)
Inventor
Takeaki Ishidai
健晃 石代
Shintaro Suzuki
慎太郎 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2006086053A priority Critical patent/JP2007262450A/en
Priority to CNA2007800113633A priority patent/CN101410534A/en
Priority to PCT/JP2007/000299 priority patent/WO2007111021A1/en
Publication of JP2007262450A publication Critical patent/JP2007262450A/en
Priority to US12/238,103 priority patent/US20090033008A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quality-guarantee system in a high frequency induction heating facility with which the improvement of reliability to the quality-guarantee, the selection and the specification of an inferior product at the time of producing the inferior product can easily be performed by understanding the processing state in each one piece of the products to be performed with the heat treatment and further, in some case, the depth of a hardened layer. <P>SOLUTION: In the induction-heat treatment facility 1, an observing device 3 for observing the processing state in the induction-heat treatment facility 1 when the individual product W is subjected to the heat treatment, is arranged. Further, a hardened layer inspecting device 2 for inspecting the depth of the hardened layer Wa formed with the heat treatment of individual product W in non-destruction can be arranged. A record device 4 for recording corresponding to the identification number of the individual product W to information of the processing state observed with the observing device 3 and information of the depth of the hardened layer inspected with the hardened layer inspecting device 2, is arranged. A marking device 5 for attaching a mark M for the identification number corresponding to the product W, is arranged. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、軸受部品、等速ジョイント部品、各種の軸、エンジン部品等となる金属製製品を高周波熱処理する高周波熱処理設備において、熱処理品質を管理する品質保証システムに関する。   The present invention relates to a quality assurance system for managing heat treatment quality in a high-frequency heat treatment facility for high-frequency heat treatment of metal products used as bearing parts, constant velocity joint parts, various shafts, engine parts, and the like.

高周波熱処理では、焼入れあるいは焼戻し加工を誘導加熱にて行っている。熱処理の品質検査では、表面の硬さ、有効硬化層の深さを確認する必要があるが、硬度計で測る必要があり、検査した製品は使用できなくなる。したがって、品質検査は抜き取りで行い、生産中は加工状態を計測してその値に図３のように上下限値を設けて監視し、上下限値内の物を良品としている。   In the induction heat treatment, quenching or tempering is performed by induction heating. In the quality inspection of the heat treatment, it is necessary to confirm the hardness of the surface and the depth of the effective hardened layer, but it is necessary to measure with a hardness meter, and the inspected product cannot be used. Therefore, the quality inspection is performed by sampling, and during the production, the processing state is measured and the upper and lower limit values are set and monitored as shown in FIG. 3, and the products within the upper and lower limit values are regarded as non-defective products.

また、有効硬化層の検査には渦流式の非破壊検査があり、図４（Ａ）のようにプローブ５１で製品Ｗを図っているが、製品Ｗの一部分を測ることしか出来ず、同図（Ｂ）のように検査位置が何箇所もある場合の製品Ｗには、適用が難しい。   In addition, there is an eddy current type non-destructive inspection for the inspection of the effective hardened layer, and the product W is intended by the probe 51 as shown in FIG. 4A, but only a part of the product W can be measured. It is difficult to apply to the product W in the case where there are many inspection positions as in (B).

なお、熱処理中の状態を監視するものとしては、特許文献１，２等に開示されたものがある。
特開２００１−２２６７１２号公報 特開２００１−２９４９３７号公報 In addition, there exists what was disclosed by patent document 1, 2, etc. as what monitors the state in heat processing.
JP 2001-226712 A JP 2001-294937 A

高周波熱処理の製品の品質検査は通常抜き取りで行っているため、不良品を混入して出荷する恐れがある。また、図５に示すように、抜き取り品質検査で一度不良品が発生した場合に、どこから不良品が発生したかが不明であり、同ロット内での選別が難しく、すべて廃棄する必要がある。さらに、不良の内容は分かっても、不良の原因（設備、加工状態の変化）を特定することは難しい。   Since the quality inspection of high frequency heat treatment products is usually performed by sampling, there is a risk of shipping defective products. Further, as shown in FIG. 5, when a defective product is generated once in the sampling quality inspection, it is unclear where the defective product has been generated. Furthermore, even if the contents of the defect are known, it is difficult to specify the cause of the defect (change in equipment and processing state).

この発明の目的は、熱処理された製品の１個ごとに加工状態や硬化層深さがわかることによる品質保証の信頼性の向上や、不良品発生時の不良品の選別，特定を容易に行うことができる高周波熱処理設備における品質保証システムを提供することである。   The object of the present invention is to improve the reliability of quality assurance by knowing the processing state and the depth of the hardened layer for each heat-treated product, and to easily select and specify defective products when defective products occur. It is to provide a quality assurance system in high frequency heat treatment equipment.

この発明の高周波熱処理設備における品質保証システムは、金属製の製品（Ｗ）に対し、高周波電源（６）に接続された加熱コイル（７）で誘導加熱し、冷却装置（８）で冷却して熱処理を行う高周波熱処理設備（１）において、
個々の製品（Ｗ）の熱処理時における高周波熱処理設備（１）での加工状態を監視する監視装置（３）と、前記監視装置（３）で監視した加工状態の情報を個々の製品（Ｗ）の識別番号と対応させて記録する記録装置（４）と、前記識別番号のマーク（Ｍ）を対応する製品（Ｗ）に付けるマーキング装置（５）とを備えたものである。 The quality assurance system in the high-frequency heat treatment equipment of this invention uses a heating coil (7) connected to a high-frequency power source (6) to inductively heat a metal product (W) and cool it with a cooling device (8). In the high frequency heat treatment equipment (1) for performing heat treatment,
A monitoring device (3) for monitoring the processing state in the high-frequency heat treatment facility (1) during the heat treatment of the individual product (W), and information on the processing state monitored by the monitoring device (3) for each product (W) And a marking device (5) for attaching the identification number mark (M) to the corresponding product (W).

もう一つの手段として、この発明の高周波熱処理設備における品質保証システムは、金属製の製品（Ｗ）に対し、高周波電源（６）に接続された加熱コイル（７）で誘導加熱し、冷却装置（８）で冷却して熱処理を行う高周波熱処理設備（１）において、
個々の製品（Ｗ）の前記熱処理により形成された硬化層（Ｗａ）の深さを非破壊で検査する硬化層検査装置（２）と、個々の製品（Ｗ）の熱処理時における高周波熱処理設備（１）での加工状態を監視する監視装置（３）と、前記硬化層検査装置（２）により検査された硬化層深さの情報および前記監視装置（３）で監視した加工状態の情報を個々の製品（Ｗ）の識別番号と対応させて記録する記録装置（４）と、前記識別番号のマーク（Ｍ）を対応する製品（Ｗ）に付けるマーキング装置（５）とを備えたものであってもよい。 As another means, the quality assurance system in the high frequency heat treatment equipment of the present invention uses a heating coil (7) connected to a high frequency power source (6) to inductively heat a metal product (W) to provide a cooling device ( In the high-frequency heat treatment equipment (1) for performing heat treatment by cooling in 8),
Hardened layer inspection device (2) for nondestructively inspecting the depth of the hardened layer (Wa) formed by the heat treatment of the individual product (W), and high-frequency heat treatment equipment during the heat treatment of the individual product (W) ( The monitoring device (3) for monitoring the processing state in 1), the information on the hardened layer depth inspected by the hardened layer inspection device (2), and the information on the processing state monitored by the monitoring device (3) are individually provided. A recording device (4) for recording in correspondence with the identification number of the product (W), and a marking device (5) for attaching the identification number mark (M) to the corresponding product (W). May be.

これらの構成により、マーキング装置で製品（Ｗ）に付された識別番号と記録装置（４）の記録内容とを照合することで、製品（Ｗ）の加工状態や硬化層（Ｗａ）の深さを知ることができる。この場合に、製品（Ｗ）の１個ごとに加工状態や硬化層深さの情報が記録されるため、品質の信頼度が向上する。また、製品（Ｗ）の１個ごとに製品（Ｗ）と加工記録が対応しているため、不良発生時の不良品の選別、不良原因の特定が可能となる。   With these configurations, the processing state of the product (W) and the depth of the hardened layer (Wa) are verified by collating the identification number assigned to the product (W) with the marking device and the recorded content of the recording device (4). Can know. In this case, since the information on the processing state and the hardened layer depth is recorded for each product (W), the reliability of quality is improved. Further, since the product (W) and the processing record correspond to each product (W), it becomes possible to select a defective product when a defect occurs and to identify the cause of the defect.

前記硬化層検査装置（２）は、硬化層（Ｗａ）の深さを非破壊で検査できるものであれば良く、例えば渦電流式の硬化層検査装置が採用できる。その他に、超音波式の硬化層検査装置を用いても良い。   The hardened layer inspection device (2) may be any device that can inspect the depth of the hardened layer (Wa) in a nondestructive manner. For example, an eddy current type hardened layer inspection device can be employed. In addition, an ultrasonic hardened layer inspection apparatus may be used.

この発明の高周波熱処理設備における品質保証システムは、高周波熱処理設備において、個々の製品の熱処理時における高周波熱処理設備での加工状態を監視する監視装置と、前記監視装置で監視した加工状態の情報を個々の製品の識別番号と対応させて記録する記録装置と、前記識別番号のマークを対応する製品に付けるマーキング装置とを備えたものであるため、熱処理された製品の１個ごとの加工状態がわかり、不良品発生時の不良品の選別，特定を容易に行うことができる。また、製品の熱処理品質の信頼度が向上する。   The quality assurance system for an induction heat treatment facility according to the present invention includes a monitoring device for monitoring a processing state in the induction heat treatment facility at the time of heat treatment of each product in the induction heat treatment facility, and information on the processing state monitored by the monitoring device. Recording device for recording in correspondence with the product identification number and a marking device for attaching the identification number mark to the corresponding product, so that the processing state of each heat-treated product can be understood. Therefore, it is possible to easily select and identify defective products when defective products occur. In addition, the reliability of the heat treatment quality of the product is improved.

もう一つの手段として、この発明の高周波熱処理設備における品質保証システムは、高周波熱処理設備において、個々の製品の熱処理により形成された硬化層の深さを非破壊で検査する硬化層検査装置と、個々の製品の熱処理時における高周波熱処理設備での加工状態を監視する監視装置と、前記硬化層検査装置により検査された硬化層深さの情報および前記監視装置で監視した加工状態の情報を個々の製品の識別番号と対応させて記録する記録装置と、前記識別番号のマークを対応する製品に付けるマーキング装置とを備えたものであるため、熱処理された製品の１個ごとの加工状態と硬化層深さがわかり、不良品発生時の不良品の選別，特定を容易に行うことができる。また、製品の熱処理品質の信頼度が向上する。   As another means, the quality assurance system in the induction heat treatment equipment of the present invention comprises a hardening layer inspection apparatus for nondestructively inspecting the depth of a hardening layer formed by heat treatment of individual products in the induction heat treatment equipment, A monitoring device for monitoring the processing state in the high-frequency heat treatment equipment during the heat treatment of the product, information on the hardened layer depth inspected by the hardened layer inspection device, and information on the processing state monitored by the monitoring device A recording device for recording in correspondence with the identification number of the product, and a marking device for attaching the mark with the identification number to the corresponding product. It is easy to identify and identify defective products when defective products occur. In addition, the reliability of the heat treatment quality of the product is improved.

この発明の一実施形態を図１および図２と共に説明する。この高周波熱処理設備における品質保証システムは、製品Ｗを熱処理する高周波熱処理設備１において、監視装置３、記録装置４、およびマーキング装置５、さらに場合によっては硬化層検査装置２を設けたものである。   An embodiment of the present invention will be described with reference to FIGS. The quality assurance system in this high-frequency heat treatment facility is provided with a monitoring device 3, a recording device 4, a marking device 5, and, in some cases, a hardened layer inspection device 2, in the high-frequency heat treatment facility 1 that heat-treats the product W.

高周波熱処理設備１は、金属製の製品Ｗに対し、高周波電源６に接続された加熱コイル７で誘導加熱し、冷却装置８で冷却する焼入れを含む熱処理を行う設備であり、例えば焼入れの後に焼き戻しを行うものであっても、また焼入れのみを行うものであっても良い。加熱コイル７から、冷却装置８を経由し、その後に製品Ｗを搬送する搬送装置１２により、硬化層検査装置２、およびマーキング装置５を経由する熱処理ラインが構成される。搬送装置１２は、複数のコンベヤ等やローディング装置等で構成される。硬化層検査装置２、およびマーキング装置５の順番は上記に限らない。または、硬化層検査装置２は無くても良い。
製品Ｗは、誘導加熱により熱処理が可能なものであれば良いが、例えば、軸受軌道輪等の軸受部品、等速ジョイントの継手部材等の等速ジョイント部品、コンロッドその他各種の軸、エンジン部品等の機械部品である。 The induction heat treatment equipment 1 is an equipment for performing heat treatment including quenching in which a metal product W is induction-heated by a heating coil 7 connected to a high-frequency power source 6 and cooled by a cooling device 8. It may be one that performs reversion or only quenching. A heat treatment line passing through the hardened layer inspection device 2 and the marking device 5 is constituted by the conveying device 12 that conveys the product W from the heating coil 7 via the cooling device 8. The transport device 12 is composed of a plurality of conveyors, loading devices, and the like. The order of the hardened layer inspection device 2 and the marking device 5 is not limited to the above. Alternatively, the hardened layer inspection device 2 may be omitted.
The product W may be anything that can be heat-treated by induction heating. For example, bearing parts such as bearing races, constant velocity joint parts such as joint members of constant velocity joints, connecting rods, various other shafts, engine parts, etc. Machine parts.

加熱コイル７に対して製品Ｗは、例えば支持台等の支持手段１０で支持される。この例では、支持手段１０は、加熱コイル７内で製品Ｗを載せてモータ１１により回転させるものとされている。製品Ｗは、加熱コイル７で複数同時に加熱を行うものであっても、また１個ずつ加熱を行うものであっても良い。加熱コイル７は、製品Ｗに対して相対的に製品軸方向等に移動させながら誘導加熱を行うものであっても良い。   The product W is supported on the heating coil 7 by support means 10 such as a support base. In this example, the support means 10 is configured such that the product W is placed in the heating coil 7 and is rotated by the motor 11. The product W may be heated by a plurality of heating coils 7 simultaneously, or may be heated one by one. The heating coil 7 may perform induction heating while moving in the product axis direction or the like relative to the product W.

冷却装置８は、熱処理の完了した製品Ｗを、焼入れのために冷却する装置であり、例えば冷却液等の冷媒を製品Ｗに向けて吐出するノズル８ａと、このノズル８ａに冷媒を供給する冷媒供給源８ｂとでなる。冷却装置８は、製品Ｗを冷却液槽等につけて冷却するものであっても良い。   The cooling device 8 is a device that cools the heat-treated product W for quenching. For example, a nozzle 8a that discharges a coolant such as a coolant toward the product W, and a coolant that supplies the coolant to the nozzle 8a. The supply source 8b. The cooling device 8 may be one that cools the product W by attaching it to a coolant tank or the like.

生産管理装置２０は、高周波熱処理設備１の全体を管理する手段であり、個々の製品Ｗが高周波熱処理設備１中の何処にあるかを認識する製品位置認識手段２１を有している。製品位置認識手段２１は、換言すれば、高周波熱処理設備１中にある各製品Ｗを識別可能に認識する手段であり、個々の製品Ｗの識別番号と対応して各製品Ｗの位置を認識する。
The production management apparatus 20 is a means for managing the entire induction heat treatment equipment 1 and has product position recognition means 21 for recognizing where the individual products W are located in the induction heat treatment equipment 1. In other words, the product position recognizing means 21 is a means for recognizing each product W in the high-frequency heat treatment facility 1 in an identifiable manner, and recognizes the position of each product W corresponding to the identification number of each product W. .

監視装置３は、個々の製品Ｗの熱処理時における高周波熱処理設備１での加工状態を監視する装置である。監視装置３による加工状態の監視項目は、製品Ｗの種類や熱処理方法等に応じて適宜設定する。加工状態の監視項目は、例えば次に挙げるものとされる。
・高周波電源６の加熱コイル７への供給電力、周波数。
・加熱中の製品Ｗの加熱コイル７に対する位置や回転数。
・冷却装置８における焼入冷却水の流量、温度。
これらの項目の監視は、高周波電源６や冷却装置８に設けた検出器類の出力を監視することで行う。 The monitoring device 3 is a device that monitors the processing state in the high-frequency heat treatment facility 1 during the heat treatment of each product W. The monitoring item of the processing state by the monitoring device 3 is appropriately set according to the type of the product W, the heat treatment method, and the like. For example, the monitoring items of the processing state are as follows.
The power supplied to the heating coil 7 of the high frequency power source 6 and the frequency.
The position and rotation speed of the product W being heated with respect to the heating coil 7.
-Flow rate and temperature of quenching cooling water in the cooling device 8.
These items are monitored by monitoring the outputs of detectors provided in the high-frequency power source 6 and the cooling device 8.

硬化層検査装置２は、個々の製品Ｗの熱処理により形成された硬化層Ｗａの深さを非破壊で測定する装置であり、例えば渦電流式の硬化層検査装置が用いられる。硬化層検査装置２は超音波式の硬化層検査装置であっても良い。この実施形態の硬化層検査装置２は、上記渦電流式のものであって、製品Ｗに近接させるプローブ２ａと、プローブ２ａの検出信号を処理して硬化層深さの値を得るデータ処理部２ｂとでなる。
硬化層検査装置２は、製品Ｗの硬化層Ｗａにおける代表部分となる一部の深さを測定するものとされる。測定箇所は、１箇所であっても複数箇所であっても良く、また測定箇所が複数箇所の場合、複数のプローブ２ａを用いて測定するものとしても、また１個のプローブ２ａで位置を変えて測定するものであっても良い。 The hardened layer inspection device 2 is a device that measures the depth of the hardened layer Wa formed by heat treatment of each product W in a nondestructive manner, and for example, an eddy current type hardened layer inspection device is used. The hardened layer inspection device 2 may be an ultrasonic type hardened layer inspection device. The hardened layer inspection apparatus 2 of this embodiment is of the eddy current type, and includes a probe 2a that is brought close to the product W, and a data processing unit that processes the detection signal of the probe 2a to obtain the value of the hardened layer depth. 2b.
The hardened layer inspection apparatus 2 is configured to measure a partial depth that is a representative portion in the hardened layer Wa of the product W. The number of measurement points may be one or a plurality of points, and when there are a plurality of measurement points, the position may be changed with a single probe 2a, even if the measurement is performed using a plurality of probes 2a. May be measured.

記録装置４は、監視装置３で監視した前記加熱コイル７への供給電力等の加工状態の情報、さらに場合によっては硬化層検査装置２により検査された硬化層深さの情報を、個々の製品Ｗの識別番号と対応させて記録する装置である。個々の製品Ｗの識別番号は、生産管理装置２０の製品位置認識手段２１から得る。記録装置４は、加工状態の情報の他に、高周波熱処理設備１の各部の設定情報、例えば高周波電源６の加熱コイル７への供給電力や周波数の設定情報を、製品Ｗの識別番号と共に記録しても良い。設定情報は、生産管理装置２０で管理され、記録装置４へ転送される。
記録装置４は、いわばデータベースであり、上記識別番号、加工状態、硬化層深さ等の情報を記憶する記憶部４ａと、記憶部４ａに対する入出力の処理を行うデータベースマネジメントシステムである記憶情報管理部４ｂとを有する。
記録装置４は、生産管理装置２０と同じコンピュータに設けられたものであっても、また別のコンピュータに設けられてネットワークで接続されたものであっても良い。 The recording device 4 provides information on the processing state such as the power supplied to the heating coil 7 monitored by the monitoring device 3, and information on the cured layer depth inspected by the cured layer inspection device 2 depending on the case. This is an apparatus for recording in correspondence with the identification number of W. The identification number of each product W is obtained from the product position recognition means 21 of the production management device 20. The recording device 4 records the setting information of each part of the high-frequency heat treatment equipment 1, for example, the power supply to the heating coil 7 of the high-frequency power source 6 and the setting information of the frequency, together with the identification number of the product W, in addition to the processing state information. May be. The setting information is managed by the production management device 20 and transferred to the recording device 4.
The recording device 4 is a database, that is, a storage unit 4a that stores information such as the identification number, processing state, and hardened layer depth, and a storage information management that is a database management system that performs input / output processing on the storage unit 4a. Part 4b.
The recording device 4 may be provided on the same computer as the production management device 20, or may be provided on another computer and connected via a network.

マーキング装置５は、記録装置４で記録する識別番号となるマークＭを、対応する製品Ｗに付ける手段であり、例えばマークＭを刻印するものとされる。マーキング装置５は、識別番号を製品Ｗに付すことができるものであれば良く、刻印の他の種々の方法で識別番号を施すものが採用できる。マーキング装置５は、例えばバーコード等のコードや、ＩＣタグ等で識別番号を製品に付すものであっても良い。マーキング装置５において、個々の製品Ｗに付すべき識別番号は、例えば生産管理装置２０から得るが、この他に記録装置４から得るものとしても良い。   The marking device 5 is means for attaching a mark M, which is an identification number recorded by the recording device 4, to the corresponding product W. For example, the marking device 5 is engraved with the mark M. The marking device 5 may be any device as long as it can attach an identification number to the product W, and a device that applies an identification number by various other methods of marking can be employed. The marking device 5 may be a device that attaches an identification number to a product using a code such as a barcode or an IC tag. In the marking device 5, an identification number to be assigned to each product W is obtained from the production management device 20, for example, but may be obtained from the recording device 4 in addition to this.

上記構成の作用を説明する。製品Ｗは、熱処理として、高周波電源６で励磁した加熱コイル７により誘導加熱され、冷却装置８で冷却することで焼入れ処理される。
この熱処理において、上記高周波電源６の加熱コイル７への供給電力や周波数等の状態である加工状態は、監視装置３で監視され、その監視した値が個々の製品Ｗの熱処理毎に記録装置４に記録される。製品Ｗには記録と対応した識別番号が付けられ、記録装置４では識別番号と対応して上記加工情報を記録する。
さらに、熱処理された各製品Ｗは、渦電流式等の硬化層検査装置２により非破壊で代表部分の深さが測定されても良い。測定された硬化層深さは、判定手段（図示せず）により必要な範囲の深さ（すなわち設定された深さの範囲）となっていることが確認され、かつ記録装置４に、上記識別情報に対応して加工情報と共に記録される。 The operation of the above configuration will be described. The product W is induction-heated by a heating coil 7 excited by a high-frequency power source 6 as a heat treatment, and is quenched by being cooled by a cooling device 8.
In this heat treatment, the processing state such as the power supplied to the heating coil 7 of the high-frequency power source 6 and the frequency is monitored by the monitoring device 3, and the monitored value is recorded for each heat treatment of each product W. To be recorded. The product W is given an identification number corresponding to the record, and the recording device 4 records the processing information corresponding to the identification number.
Further, the depth of the representative portion of each heat-treated product W may be measured nondestructively by the eddy current type hardened layer inspection apparatus 2. The measured cured layer depth is confirmed by the determination means (not shown) to be within the required range (ie, the set depth range), and the recording device 4 identifies the above-mentioned identification. Corresponding to the information, it is recorded together with the processing information.

図２（Ａ）はこの実施形態における製品Ｗの熱処理の管理の概念を示し、同図（Ｂ）は従来の管理の概念を示す。
同図からわかるように、この実施形態の品質保証システムによると、製品Ｗの１個毎に製品識別情報と共に、加工情報さらに場合によっては硬化層深さが記録される。そのため、品質の信頼度が向上する。また、製品Ｗの１ごとに製品と加工記録が対応しているため、不良発生時の不良品の選別、不良原因の特定が可能となる。 FIG. 2A shows the concept of management of heat treatment of the product W in this embodiment, and FIG. 2B shows the concept of conventional management.
As can be seen from the figure, according to the quality assurance system of this embodiment, processing information and, in some cases, the hardened layer depth are recorded together with product identification information for each product W. Therefore, the reliability of quality is improved. In addition, since the product and the processing record correspond to each product W, it is possible to select a defective product and specify the cause of the failure when a failure occurs.

この発明の一実施形態に係る高周波熱処理設備における品質保証システムの概念構成を示す説明図である。It is explanatory drawing which shows the conceptual structure of the quality assurance system in the high frequency heat processing equipment concerning one Embodiment of this invention. （Ａ）は同実施形態の品質保証システムによる管理状態を示す説明図、（Ｂ）は従来の管理状態を示す説明図である。(A) is explanatory drawing which shows the management state by the quality assurance system of the embodiment, (B) is explanatory drawing which shows the conventional management state. 従来の管理による製品生産と加工条件との関係を示す説明図である。It is explanatory drawing which shows the relationship between the product production by the conventional management, and processing conditions. 渦電流式硬化層検査装置による各測定例の説明図である。It is explanatory drawing of each measurement example by an eddy current type hardened layer inspection apparatus. 従来の管理による製品生産と品質の関係を示す説明図である。It is explanatory drawing which shows the relationship between product production by conventional management, and quality.

符号の説明Explanation of symbols

１…高周波熱処理設備
２…硬化層検査装置
３…監視装置
４…記録装置
５…マーキング装置
６…高周波電源
７…加熱コイル
８…冷却装置
Ｍ…マーク
Ｗ…製品
Ｗａ…硬化層 DESCRIPTION OF SYMBOLS 1 ... High frequency heat treatment equipment 2 ... Hardened layer inspection apparatus 3 ... Monitoring apparatus 4 ... Recording apparatus 5 ... Marking apparatus 6 ... High frequency power supply 7 ... Heating coil 8 ... Cooling apparatus M ... Mark W ... Product Wa ... Hardened layer

Claims (3)

金属製の製品に対し、高周波電源に接続された加熱コイルで製品を誘導加熱し、冷却装置で冷却して熱処理を行う高周波熱処理設備において、
個々の製品の熱処理時における高周波熱処理設備での加工状態を監視する監視装置、および前記監視装置で監視した加工状態の情報を個々の製品の識別番号と対応させて記録する記録装置を備えた高周波熱処理設備における品質保証システム。 In a high-frequency heat treatment facility that heats a metal product by induction heating with a heating coil connected to a high-frequency power source and cooling with a cooling device,
A high-frequency device provided with a monitoring device for monitoring a processing state in a high-frequency heat treatment facility during heat treatment of each product, and a recording device for recording information on the processing state monitored by the monitoring device in correspondence with an identification number of each product Quality assurance system for heat treatment equipment. 金属製の製品に対し、高周波電源に接続された加熱コイルで製品を誘導加熱し、冷却装置で冷却して熱処理を行う高周波熱処理設備において、
個々の製品の前記熱処理により形成された硬化層の深さを非破壊で検査する硬化層検査装置と、個々の製品の熱処理時における高周波熱処理設備での加工状態を監視する監視装置と、前記硬化層検査装置により検査された硬化層深さの情報および前記監視装置で監視した加工状態の情報を個々の製品の識別番号と対応させて記録する記録装置と、前記識別番号のマークを対応する製品に付けるマーキング装置とを備えた高周波熱処理設備における品質保証システム。 In a high-frequency heat treatment facility that heats a metal product by induction heating with a heating coil connected to a high-frequency power source and cooling with a cooling device,
A cured layer inspection device that non-destructively inspects the depth of a cured layer formed by the heat treatment of each product, a monitoring device that monitors a processing state in a high-frequency heat treatment facility during the heat treatment of each product, and the curing Recording device for recording information of hardened layer depth inspected by layer inspection device and information of processing state monitored by said monitoring device in correspondence with identification number of each product, and product corresponding to mark of said identification number Quality assurance system in high-frequency heat treatment equipment equipped with a marking device attached. 請求項２において、前記硬化層検査装置が渦電流式硬化層検査装置である高周波熱処理設備における品質保証システム。
3. A quality assurance system in an induction heat treatment facility according to claim 2, wherein the hardened layer inspection device is an eddy current type hardened layer inspection device.
JP2006086053A 2006-03-27 2006-03-27 Quality-guarantee system in high frequency induction heating facility Pending JP2007262450A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2006086053A JP2007262450A (en) 2006-03-27 2006-03-27 Quality-guarantee system in high frequency induction heating facility
CNA2007800113633A CN101410534A (en) 2006-03-27 2007-03-26 Quality warranty system in induction heat treatment facilities
PCT/JP2007/000299 WO2007111021A1 (en) 2006-03-27 2007-03-26 Quality guarantee system for high frequency heat treatment equipment
US12/238,103 US20090033008A1 (en) 2006-03-27 2008-09-25 Quality warranty system in induction heat treatment facilities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006086053A JP2007262450A (en) 2006-03-27 2006-03-27 Quality-guarantee system in high frequency induction heating facility

Publications (1)

Publication Number Publication Date
JP2007262450A true JP2007262450A (en) 2007-10-11

Family

ID=38540956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006086053A Pending JP2007262450A (en) 2006-03-27 2006-03-27 Quality-guarantee system in high frequency induction heating facility

Country Status (4)

Country Link
US (1) US20090033008A1 (en)
JP (1) JP2007262450A (en)
CN (1) CN101410534A (en)
WO (1) WO2007111021A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011127159A (en) * 2009-12-16 2011-06-30 Miyaden Co Ltd High frequency induction heating apparatus
WO2017090795A1 (en) * 2015-11-26 2017-06-01 박종규 Apparatus for high-frequency heat treatment of ball studs, having eddy-current-testing total inspection function
WO2017090796A1 (en) * 2015-11-26 2017-06-01 박종규 Apparatus for high-frequency heat treatment of stub shafts, having eddy-current-testing total inspection function
WO2017221963A1 (en) * 2016-06-22 2017-12-28 Ntn株式会社 Method for manufacturing bearing parts
KR20210028395A (en) * 2019-09-04 2021-03-12 임기현 Heat Treatment Automatic System and Method Thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2466195C1 (en) * 2011-06-16 2012-11-10 Государственное образовательное учреждение высшего профессионального образования "Тольяттинский государственный университет" Method of automatic diagnostics and control of thermal power processing of low stiff axisymmetrical parts, and device for its implementation
KR20140134997A (en) * 2013-05-15 2014-11-25 박종규 High frequency heat treatment apparatus for surface hardening
JP6446252B2 (en) * 2014-12-11 2018-12-26 高周波熱錬株式会社 Heat treatment equipment
DE102017116024B3 (en) * 2017-07-17 2018-09-13 Ald Vacuum Technologies Gmbh Process and furnace for the thermochemical treatment of metallic workpieces
DE102019211862A1 (en) * 2019-08-07 2021-02-11 Robert Bosch Gmbh Process for inductive heat treatment and procedural arrangement for carrying out the process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0238518A (en) * 1988-07-27 1990-02-07 Daido Steel Co Ltd Method for treating high frequency quenching
JPH02141656A (en) * 1988-11-24 1990-05-31 Katsuhiro Ota Quality control method for member whose surface part is quenched and hardened
US5885522A (en) * 1996-09-12 1999-03-23 Midland Steel Products Co. Method and apparatus for heat treating and straightening structural members
JP3499498B2 (en) 2000-04-10 2004-02-23 富士電子工業株式会社 Induction heat treatment equipment
JP4365536B2 (en) * 2001-02-19 2009-11-18 Ｊｆｅスチール株式会社 Steel production process abnormality judgment device
JP4365537B2 (en) * 2001-02-20 2009-11-18 Ｊｆｅスチール株式会社 Steel product quality control equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011127159A (en) * 2009-12-16 2011-06-30 Miyaden Co Ltd High frequency induction heating apparatus
WO2017090795A1 (en) * 2015-11-26 2017-06-01 박종규 Apparatus for high-frequency heat treatment of ball studs, having eddy-current-testing total inspection function
WO2017090796A1 (en) * 2015-11-26 2017-06-01 박종규 Apparatus for high-frequency heat treatment of stub shafts, having eddy-current-testing total inspection function
WO2017221963A1 (en) * 2016-06-22 2017-12-28 Ntn株式会社 Method for manufacturing bearing parts
KR20210028395A (en) * 2019-09-04 2021-03-12 임기현 Heat Treatment Automatic System and Method Thereof
KR102322901B1 (en) * 2019-09-04 2021-11-08 임기현 Heat Treatment Automatic System and Method Thereof

Also Published As

Publication number Publication date
CN101410534A (en) 2009-04-15
US20090033008A1 (en) 2009-02-05
WO2007111021A1 (en) 2007-10-04

Similar Documents

Publication Publication Date Title
JP2007262450A (en) Quality-guarantee system in high frequency induction heating facility
Netzelmann et al. Induction thermography: principle, applications and first steps towards standardisation
JP6243225B2 (en) Thermograph test method and test apparatus for carrying out this test method
WO2017199959A1 (en) Surface treatment processing method and surface treatment processing device
US7666346B2 (en) Steel-member manufacturing facility, thin bearing-member and thrust bearing
JP5263178B2 (en) Nondestructive inspection method for steel rails for tracks
Seidel et al. Grinding burn inspection: tools for supervising and objectifying of the testing process
US20110106460A1 (en) Automated component verification system
Zhang et al. Characteristics of metal magnetic memory signals of different steels in high cycle fatigue tests
WO2018211879A1 (en) Surface treatment processing method and surface treatment processing device
Dubov Detection of metallurgical and production defects in engineering components using metal magnetic memory
JP2006291247A (en) Heat treatment method, method for producing thin member for bearing, thin member for bearing and thrust bearing
Xie et al. Automated identification of front/rear surface cracks in ferromagnetic metals based on eddy current pulsed thermography
JP7354591B2 (en) Induction hardening method and induction hardening equipment
JPWO2011118681A1 (en) Steel pipe manufacturing equipment
JP5318354B2 (en) Method and apparatus for quenching quality control of shaft
JP5318355B2 (en) Hardening quality control method and apparatus for constant velocity joint outer ring
Le Manh et al. Future trend and applications of Barkhausen noise
JP5619952B2 (en) Manufacturing method of constant velocity joint outer ring
Shleenkov et al. On the Possibility of In-Process Magnetic Detection of Flaws in Rails
Addepalli et al. Active thermography in through-life engineering
JP2007239037A (en) Induction heating and hardening of hub bearing
Kumar et al. Eddy Current Thermography as a Tool for Detecting the Location and Dimension of Edge Defects in Cr–Mo Steel Plate
Ehlen et al. Automated NDT of railway wheels using induction thermography
US9488618B2 (en) Generator retaining ring and other component thermal degradation evaluation by eddy current non-destructive examination