JP2001262235A - Local heat treating device for piping and vessel - Google Patents

Local heat treating device for piping and vessel

Info

Publication number
JP2001262235A
JP2001262235A JP2000076318A JP2000076318A JP2001262235A JP 2001262235 A JP2001262235 A JP 2001262235A JP 2000076318 A JP2000076318 A JP 2000076318A JP 2000076318 A JP2000076318 A JP 2000076318A JP 2001262235 A JP2001262235 A JP 2001262235A
Authority
JP
Japan
Prior art keywords
heat treatment
temperature
piping
local heat
treatment apparatus
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
JP2000076318A
Other languages
Japanese (ja)
Inventor
Kenichi Maeda
謙一 前田
Yasukata Tamai
康方 玉井
Takeshi Wada
武 和田
Haruo Sasa
晴夫 佐々
Susumu Suzuki
享 鈴木
Ikuo Mibu
生男 壬生
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.)
Hitachi Engineering and Services Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering and Services Co Ltd
Hitachi 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 Hitachi Engineering and Services Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering and Services Co Ltd
Priority to JP2000076318A priority Critical patent/JP2001262235A/en
Publication of JP2001262235A publication Critical patent/JP2001262235A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To improve the reliability in a stage in which heat treatment for removing welding residual stress in piping 22 or a vessel is performed by using a heater 20 composed of electric resistance wire. SOLUTION: A local heat treating device for piping and vessels is composed by using a personal computer 1, or the like, setting up and setting are performed in accordance with indication on the picture of the personal computer 1, and automatic operation is performed in accordance with a heat treating program pattern, so that the reliability of heat treatment for removing welding residual stress can be improved.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、配管・容器などの
溶接部の溶接後に行われる溶接残留応力除去のための局
部熱処理方法および装置に関し、特に、電気抵抗線など
の加熱手段,パーソナルコンピュータ,デジタルプログ
ラム温度調節計,SCRユニット,温度記録計などを用
いる自動熱処理制御手段から構成される配管・容器局部
熱処理装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for local heat treatment for removing residual welding stress after welding of a welded portion such as a pipe or a container, and more particularly to a heating means such as an electric resistance wire, a personal computer, The present invention relates to a pipe and vessel local heat treatment apparatus including automatic heat treatment control means using a digital program temperature controller, an SCR unit, a temperature recorder, and the like.

【0002】[0002]

【従来の技術】従来の配管溶接部の熱処理方法はニクロ
ム線からなる外部ヒータを用いる電気抵抗線加熱手段
と、高周波誘導コイルを用いる高周波誘導加熱手段があ
り、後者については、特開平6−248350号公報に
提案されている。
2. Description of the Related Art Conventional heat treatment methods for welded pipes include an electric resistance wire heating means using an external heater made of a nichrome wire, and a high frequency induction heating means using a high frequency induction coil. No. 1993.

【0003】しかし、材質,板厚から自動的に熱処理条
件を決定できなかった。また、所定条件から外れた場
合、自動的に補正できないため、手動で調整せざるを得
なかった。
However, the heat treatment conditions cannot be automatically determined from the material and the thickness. In addition, when the value deviates from the predetermined condition, the correction cannot be performed automatically, so that it is necessary to manually adjust the value.

【0004】[0004]

【発明が解決しようとする課題】材質,板厚をインプッ
トすると自動的に熱処理条件を決定できるようにするこ
と、あるいは所定の条件から外れた場合、最適な補正カ
ーブがとれるようにする必要がある。
It is necessary to make it possible to automatically determine the heat treatment condition when the material and plate thickness are input, or to obtain an optimum correction curve when the condition is not satisfied. .

【0005】熱処理作業の信頼性を向上させるために
は、操作性が簡単でミスが起きにくいこと、過度変化に
対し熱処理曲線の追従性が高いこと、多点位置における
温度のバランスがとれること、熱伝対の断線,ヒータの
断線,熱処理曲線の設定ミスなどのトラブルに対し自己
診断ができること、記録計の紙づまり,インク切れにお
いても熱処理曲線が再現できることなどの機能を備えた
装置が必要となる。
[0005] In order to improve the reliability of the heat treatment operation, the operability is simple and errors are less likely to occur, the followability of the heat treatment curve to excessive changes is high, and the temperature at multiple points can be balanced. Equipment that can perform self-diagnosis for troubles such as disconnection of thermocouple, disconnection of heater, and incorrect setting of heat treatment curve, and equipment that can reproduce the heat treatment curve even when the paper jam of the recorder or the ink runs out is required. Become.

【0006】本発明の目的は、操作性が簡単でミスが起
きにくく、熱処理作業の信頼性を向上させることにあ
る。
SUMMARY OF THE INVENTION An object of the present invention is to improve the reliability of a heat treatment operation because the operability is simple and errors are less likely to occur.

【0007】[0007]

【課題を解決するための手段】電気抵抗線などの加熱手
段を用いる配管・容器局部熱処理装置による熱処理の信
頼性向上に関しては以下により解決を図る。 (1)パーソナルコンピュータ,デジタルプログラム温
度調節計,SCRユニット,電圧・電流変換器,温度記
録計などから構成される自動熱処理手段により、材質と
板厚から数百種類の熱処理条件をパーソナルコンピュー
タに記憶させておき、材質と板厚から最適な熱処理条件
を選択し、熱処理を実行する。 (2)昇温・保温・降温の熱処理プログラムをステップ
A〜Fに区分し、これらのステップを連続して実行して
熱処理を行う。 (3)昇温・保温・降温において、所定の熱処理プログ
ラムから外れた場合に、昇温速度補償,保持温度補償、
降温速度補償を行い、それぞれの延長時間をセットす
る。
Means for Solving the Problems The improvement of the reliability of heat treatment by a pipe and vessel local heat treatment apparatus using a heating means such as an electric resistance wire is solved as follows. (1) Hundreds of types of heat treatment conditions are stored in a personal computer based on the material and plate thickness by an automatic heat treatment means including a personal computer, a digital program temperature controller, an SCR unit, a voltage / current converter, and a temperature recorder. The optimum heat treatment condition is selected from the material and the thickness, and the heat treatment is performed. (2) The heat treatment program for raising, lowering, and lowering the temperature is divided into steps A to F, and these steps are continuously executed to perform the heat treatment. (3) In the case of deviation from a predetermined heat treatment program in temperature rise, heat retention, and temperature decrease, temperature rise rate compensation, retention temperature compensation,
Perform the cooling rate compensation and set the extension time.

【0008】[0008]

【発明の実施の形態】以下本発明にかかる実施例を各図
に基づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below with reference to the drawings.

【0009】図1は本発明の配管・容器局部熱処理装置
の構成の概要を示す。装置は、パーソナルコンピュータ
(PC)1,デジタルプログラム温度調節計(DP)
2,SCRユニット(SCR)3,電圧・電流変換器
4,内蔵と別置の温度記録計5,6,キーボード7,マ
ウス8,アナログ・デジタル(A/D)変換器9,電気
抵抗線から構成される4個のヒータ20,6個の熱伝対
21などから構成される。
FIG. 1 shows an outline of the configuration of a piping and vessel local heat treatment apparatus of the present invention. The equipment is a personal computer (PC) 1, a digital program temperature controller (DP)
2, SCR unit (SCR) 3, voltage / current converter 4, built-in and separate temperature recorder 5, 6, keyboard 7, mouse 8, analog / digital (A / D) converter 9, electric resistance wire It comprises four heaters 20, six thermocouples 21 and the like.

【0010】パーソナルコンピュータ1は、まず、温度
条件設定(溶接部厚さ,口径,ヒータ長,ヒータ巻数,
ヒータ並列,プログラムNo.,スタート昇温時間,ス
タート保持温度,昇温速度,昇温速度設定値,保持温
度,保持温度設定値,降温速度,降温速度設定値)し、
機器接続図(デジタルプログラム温度調節計2,SCR
ユニット3,電圧・電流変換器4,内蔵と別置の温度記
録計5,6からなる接続図)を選択し、ステータス表示
(熱電対21接続状態,ヒータ20接続状態,ヒータ2
0容量)を行う。
The personal computer 1 first sets temperature conditions (weld thickness, diameter, heater length, heater winding number,
Heater parallel, program No. , Start heating time, start holding temperature, heating rate, heating rate setting value, holding temperature, holding temperature setting value, cooling rate, cooling rate setting value)
Device connection diagram (digital program temperature controller 2, SCR
Unit 3, voltage / current converter 4, built-in and separate temperature recorders 5, 6) and status display (thermocouple 21 connection state, heater 20 connection state, heater 2 connection state)
0 volume).

【0011】次に、熱処理プログラムパターンにより、
熱処理スタート,熱電対21チェック,ヒータ20チェ
ック,スタート昇温,スタート保温,昇温,保温,降温
の一連の熱処理作業を自動的に実行する。
Next, according to a heat treatment program pattern,
A series of heat treatment operations of heat treatment start, thermocouple 21 check, heater 20 check, start temperature rise, start heat retention, temperature rise, heat retention, and temperature fall are automatically executed.

【0012】この間、熱処理作業中に昇温速度過大防
止,オーバシュート防止,アンダーシュート防止,保温
公差内保温,降温速度過大防止を自動的に実行する。
During this time, during the heat treatment operation, the prevention of excessive heating rate, the prevention of overshoot, the prevention of undershoot, the keeping of the temperature within tolerance, and the prevention of excessive cooling of the temperature are automatically executed.

【0013】また、制御側熱電対21(内蔵温度記録計
5に接続)と監視制御側熱電対21(別置温度記録計6
に接続)の切り替え、制御側熱電対21と監視制御側熱
電対21の平均化制御,熱処理プログラムパターン生成
支援システムによる最適熱処理プログラムパターンの自
動生成,自己診断アルゴリズムでデータベースの登録を
行い、異常の判定,ロジック変更,熱処理プログラムパ
ターンのチェックにより入力ミスを防止し、ヒータ20
の断線,熱電対21の断線,ヒータ20容量不足,異常
熱処理プログラムパターンの検出などの自己診断を行
う。
The control thermocouple 21 (connected to the built-in temperature recorder 5) and the monitoring control thermocouple 21 (separate temperature recorder 6)
Switching, control of the control-side thermocouple 21 and monitoring control-side thermocouple 21 averaging, automatic generation of the optimal heat treatment program pattern by the heat treatment program pattern generation support system, registration of the database with the self-diagnosis algorithm, Input errors are prevented by judging, changing logic, and checking the heat treatment program pattern.
Self-diagnosis such as disconnection of the thermocouple 21, disconnection of the thermocouple 21, insufficient capacity of the heater 20, and detection of an abnormal heat treatment program pattern.

【0014】デジタルプログラム温度調節計(DP)2
は4個の調節計(DP1〜4)を備え、パーソナルコン
ピュータ1からの命令を受け、熱処理プログラムパター
ンを生成,記憶し、熱処理プログラムパターンを実行
し、熱処理プログラムパターンの進行状況を表示し、熱
処理プログラムパターンの平行シフトを行い自動熱処理
を行うため信号を出力する。
Digital program temperature controller (DP) 2
Is provided with four controllers (DP1 to 4), receives commands from the personal computer 1, generates and stores a heat treatment program pattern, executes the heat treatment program pattern, displays the progress of the heat treatment program pattern, A signal is output for performing a parallel shift of the program pattern and performing the automatic heat treatment.

【0015】SCRユニット(SCR)3は4個のSC
Rユニット(SCR1〜4)を備え、デジタルプログラ
ム温度調節計2のDP1〜4からの出力を入力し、電圧
・電流変換器4を経てヒータ20に電圧,電流を供給す
る。
The SCR unit (SCR) 3 has four SCs.
R units (SCRs 1 to 4) are provided, the outputs from the DPs 1 to 4 of the digital program temperature controller 2 are input, and the voltage and current are supplied to the heater 20 via the voltage / current converter 4.

【0016】電圧・電流変換器4は4組の変換器を備
え、ヒータ20に供給される電圧,電流をDC4〜20
mAの電圧信号,電流信号に変換する。
The voltage / current converter 4 includes four sets of converters, and converts the voltage and current supplied to the heater 20 to DC4 to DC20.
The signal is converted into a voltage signal and a current signal of mA.

【0017】温度記録計5,6は6個の熱電対21から
配管22の温度を入力し、記録し、パーソナルコンピュ
ータ1,デジタルプログラム温度調節計2に測定データ
を送信する。なお、別置温度記録計6は監視側に用いら
れる。
The temperature recorders 5 and 6 receive and record the temperature of the pipe 22 from the six thermocouples 21 and transmit the measured data to the personal computer 1 and the digital program temperature controller 2. The separate temperature recorder 6 is used on the monitoring side.

【0018】キーボード7,マウス8はオペレータによ
る手動入力に用いられる。パーソナルコンピュータ1は
タッチパネル方式を採用しているが、キーボード7,マ
ウス8によっても入力可能としている。
The keyboard 7 and the mouse 8 are used for manual input by an operator. Although the personal computer 1 employs a touch panel system, input can also be performed with a keyboard 7 and a mouse 8.

【0019】アナログ・デジタル(A/D)変換器9は
電圧・電流変換器4からのアナログ信号をデジタル信号
に変換する。
An analog / digital (A / D) converter 9 converts an analog signal from the voltage / current converter 4 into a digital signal.

【0020】ヒータ20はコイル式とパネル式がある
が、ここでは、パネル式を採用している。ヒータ20は
配管22の上下左右に4個取り付けている。
The heater 20 has a coil type and a panel type. Here, the panel type is adopted. Four heaters 20 are mounted on the upper, lower, left, and right sides of the pipe 22.

【0021】熱電対21は配管22の上下左右に4個
と、反時計方向135°付近に1個、時計方向−45°
付近に1個取り付けている。
The number of thermocouples 21 is four at the top, bottom, left and right of the pipe 22, one near the counterclockwise 135 °, and −45 ° clockwise.
One is attached near.

【0022】図2は本発明の配管・容器局部熱処理装置
による溶接残留応力除去熱処理プログラムパターンの一
例を示す。縦軸は温度T、横軸は時間tを示し、熱処理
プログラムパターン30はA〜Fのステップで実行され
る。ここで、Aはヒータ容量チェック、Bはオーバシュ
ート防止、Cは複数のデジタルプログラム温度調節計2
の同期、Dは昇温速度補償と温度差チェック、Eは保持
温度補償,保持温度平均化、そしてセンサ補正、Fは降
温速度補償である。
FIG. 2 shows an example of a welding residual stress removal heat treatment program pattern by the piping / container local heat treatment apparatus of the present invention. The vertical axis indicates the temperature T and the horizontal axis indicates the time t, and the heat treatment program pattern 30 is executed in steps A to F. Here, A is a heater capacity check, B is overshoot prevention, C is a plurality of digital program temperature controllers 2
, D is a temperature rise rate compensation and temperature difference check, E is a holding temperature compensation, holding temperature averaging, and sensor correction, and F is a temperature drop rate compensation.

【0023】なお、保持温度平均化は制御側温度と監視
側温度の差を設定値を中心とした公差内に入るようにす
ることであり、センサ補正は同一点のデジタルプログラ
ム温度調節計2側温度と、内蔵温度記録計5側温度の差
を補正することである。
The holding temperature averaging is to make the difference between the control side temperature and the monitoring side temperature fall within a tolerance centered on the set value, and the sensor correction is performed on the same side of the digital program temperature controller 2 side. This is to correct the difference between the temperature and the temperature on the built-in temperature recorder 5 side.

【0024】図3は本発明の配管・容器局部熱処理装置
による溶接残留応力除去熱処理プログラムパターンのス
テップの一例を示す。出力リミットではヒータ20に供
給する最大出力値を調整する。PID値制御では設定値
と測定値を常時監視し、昇温速度補償D,保持温度補償
E,降温速度補償F,オーバシュート防止B,アンダー
シュート防止などを行い滑らかな曲線で熱処理を行う。
FIG. 3 shows an example of steps of a welding residual stress removal heat treatment program pattern by the piping and vessel local heat treatment apparatus of the present invention. In the output limit, the maximum output value supplied to the heater 20 is adjusted. In the PID value control, the set value and the measured value are constantly monitored, and the heat treatment is performed with a smooth curve by performing the temperature rising speed compensation D, the holding temperature compensation E, the temperature falling speed compensation F, the overshoot prevention B, the undershoot prevention, and the like.

【0025】デジタルプログラム温度調節計2の同期で
は配管20全体に渡り温度を均一にする。昇温速度補償
Dでは昇温速度の乱れが発生してから回復するまでの時
間を延長し、急勾配を防止する。保持温度補償Eでは保
持温度の±の許容温度を外れて回復するまでの時間を延
長し、所定の時間を守る。降温速度補償Fでは降温速度
の乱れが発生してから回復するまでの時間を延長し、急
勾配を防止する。
In synchronizing the digital program temperature controller 2, the temperature is made uniform over the entire pipe 20. In the heating rate compensation D, the time from the occurrence of the disturbance in the heating rate to the recovery is extended to prevent a steep gradient. In the holding temperature compensation E, the time until the temperature deviates from the allowable temperature ± of the holding temperature and recovers is extended, and a predetermined time is kept. In the cooling rate compensation F, the time from the occurrence of disturbance in the cooling rate to the recovery is extended to prevent a steep gradient.

【0026】図4は本発明の配管・容器局部熱処理装置
の昇温速度補償を示す。例えば、熱処理プログラムパタ
ーン30の昇温速度補償Dにおいて、昇温速度の乱れが
発生41した場合、発生41してから回復42するまで
の時間43を延長時間とし、デジタルプログラム温度調
節計2にセットする。
FIG. 4 shows the temperature rise rate compensation of the pipe and vessel local heat treatment apparatus of the present invention. For example, in the heating rate compensation D of the heat treatment program pattern 30, when a disturbance 41 in the heating rate occurs 41, the time 43 from the occurrence 41 to the recovery 42 is set as an extension time and set in the digital program temperature controller 2. I do.

【0027】図5は本発明の配管・容器局部熱処理装置
の保持温度補償を示す。例えば、熱処理プログラムパタ
ーン30の保持温度補償Eにおいて、温度公差54,5
5からの外れが発生51した場合、発生51してから回
復52するまでの時間53を延長時間とし、デジタルプ
ログラム温度調節計2にセットする。
FIG. 5 shows the holding temperature compensation of the pipe and vessel local heat treatment apparatus of the present invention. For example, in the holding temperature compensation E of the heat treatment program pattern 30, the temperature tolerance 54,5
In the case where the deviation from 5 occurs 51, the time 53 from the occurrence 51 to the recovery 52 is set as an extension time and set in the digital program temperature controller 2.

【0028】図6は本発明の配管・容器局部熱処理装置
の降温速度補償を示す。例えば、熱処理プログラムパタ
ーン30の降温速度補償Fにおいて、降温速度の乱れが
発生61した場合、発生61してから回復62するまで
の時間63を延長時間とし、デジタルプログラム温度調
節計2にセットする。
FIG. 6 shows the temperature lowering rate compensation of the pipe and vessel local heat treatment apparatus of the present invention. For example, in the temperature-fall rate compensation F of the heat treatment program pattern 30, when the temperature-fall rate is disturbed 61, the time 63 from the occurrence 61 to the recovery 62 is set as an extension time and set in the digital program temperature controller 2.

【0029】図7は本発明の配管・容器局部熱処理装置
の応用例の一例を示す。配管71,72,73,74の
4個所にそれぞれヒータ76,熱電対78を取り付け、
溶接残留応力除去熱処理を行うことも可能である。
FIG. 7 shows an example of an application of the piping and vessel local heat treatment apparatus of the present invention. Heaters 76 and thermocouples 78 are attached to four places of pipes 71, 72, 73, 74, respectively.
It is also possible to perform a welding residual stress removing heat treatment.

【0030】上述のように、本発明によれば、配管22
または容器の溶接部にヒータ20と熱電対21を取り付
け、パーソナルコンピュータ1の表示画面の指示に従
い、設定値入力または選択してスタートボタンを押すこ
とにより自動的に熱処理プログラムパターン30を実行
する装置を提供でき、溶接残留応力除去熱処理の信頼性
向上に大きく寄与することが可能となった。
As described above, according to the present invention, the piping 22
Alternatively, a heater 20 and a thermocouple 21 are attached to the welded portion of the container, and a device for automatically executing the heat treatment program pattern 30 by inputting or selecting a set value and pressing a start button in accordance with an instruction on a display screen of the personal computer 1 is provided. It is possible to greatly contribute to the improvement of the reliability of the heat treatment for removing the residual stress in welding.

【0031】[0031]

【発明の効果】本発明によれば、オペレータが介在しな
いで高精度,高信頼性の溶接残留応力除去熱処理制御技
術が確立でき、熱処理作業要領,熱処理条件などをパー
ソナルコンピュータ1の画面に表示し、これに基づき段
取りし、設定・選択し、熱処理を自動的に行うため、効
率向上,省力化,信頼性の向上が可能となった。
According to the present invention, it is possible to establish a high-accuracy and high-reliability welding residual stress removal heat treatment control technique without the intervention of an operator, and display the heat treatment work procedure and heat treatment conditions on the screen of the personal computer 1. Based on this, setup, setting / selection, and heat treatment are automatically performed, so that efficiency can be improved, labor can be saved, and reliability can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の配管・容器局部熱処理装置の構成の概
要図。
FIG. 1 is a schematic diagram of a configuration of a piping and vessel local heat treatment apparatus of the present invention.

【図2】本発明の配管・容器局部熱処理装置による溶接
残留応力除去熱処理プログラムパターン図。
FIG. 2 is a program pattern diagram of a heat treatment program for removing residual welding stress by the pipe and vessel local heat treatment apparatus of the present invention.

【図3】本発明の配管・容器局部熱処理装置による溶接
残留応力除去熱処理プログラムパターンのステップ図。
FIG. 3 is a step diagram of a welding residual stress removal heat treatment program pattern by the piping and vessel local heat treatment apparatus of the present invention.

【図4】本発明の配管・容器局部熱処理装置の昇温速度
補償の説明図。
FIG. 4 is an explanatory diagram of a temperature rise rate compensation of the pipe and vessel local heat treatment apparatus of the present invention.

【図5】本発明の配管・容器局部熱処理装置の保持温度
補償の説明図。
FIG. 5 is an explanatory diagram of the holding temperature compensation of the piping / container local heat treatment apparatus of the present invention.

【図6】本発明の配管・容器局部熱処理装置の降温速度
補償の説明図。
FIG. 6 is an explanatory view of temperature reduction rate compensation of the piping / vessel local heat treatment apparatus of the present invention.

【図7】本発明の配管・容器局部熱処理装置の応用例に
よる構成の概要図。
FIG. 7 is a schematic diagram of an application example of a piping and vessel local heat treatment apparatus of the present invention.

【符号の説明】[Explanation of symbols]

1…パーソナルコンピュータ(PC)、2…デジタルプ
ログラム温度調節計(DP)、3…SCRユニット(S
CR)、4…電圧・電流変換器、5,6…内蔵と別置の
温度記録計、7…キーボード、8…マウス、9…アナロ
グ・デジタル(A/D)変換器、20,76…ヒータ、
21,78…熱電対、22,71,72,73,74…
配管、30…熱処理プログラムパターン、41,51,
61…発生、42,52,62…回復、43,53,6
3…時間、54,55…温度公差。
1: Personal computer (PC), 2: Digital program temperature controller (DP), 3: SCR unit (S
CR), 4: voltage / current converter, 5, 6: built-in and separate temperature recorder, 7: keyboard, 8: mouse, 9: analog / digital (A / D) converter, 20, 76: heater ,
21, 78 ... thermocouple, 22, 71, 72, 73, 74 ...
Piping, 30 ... heat treatment program pattern, 41, 51,
61 ... occurrence, 42, 52, 62 ... recovery, 43, 53, 6
3. Time, 54, 55 Temperature tolerance.

フロントページの続き (72)発明者 玉井 康方 茨城県日立市幸町三丁目1番1号 株式会 社日立製作所原子力事業部内 (72)発明者 和田 武 茨城県日立市幸町三丁目1番1号 株式会 社日立製作所原子力事業部内 (72)発明者 佐々 晴夫 茨城県日立市幸町三丁目1番1号 株式会 社日立製作所日立事業所内 (72)発明者 鈴木 享 茨城県日立市幸町三丁目1番1号 株式会 社日立製作所日立事業所内 (72)発明者 壬生 生男 茨城県日立市幸町三丁目2番2号 株式会 社日立エンジニアリングサービス内 Fターム(参考) 4K042 AA06 AA24 BA09 DC01 DC02 DC03 EA01 Continued on the front page (72) Inventor Yasukata Tamai 3-1-1, Sachimachi, Hitachi City, Ibaraki Prefecture Inside the Nuclear Power Division, Hitachi, Ltd. (72) Inventor Takeshi Wada 3-1-1, Sachimachi, Hitachi City, Ibaraki Prefecture No. Within the Nuclear Power Business Division, Hitachi, Ltd. (72) Inventor Haruo Sasa 3-1-1, Komachi, Hitachi, Hitachi, Ibaraki Prefecture Within Hitachi, Ltd. Hitachi, Ltd. Hitachi 1-1, Hitachi, Ltd. Hitachi Works, Ltd. (72) Inventor Ikuo Mibu 3-2-2, Sachimachi, Hitachi-shi, Ibaraki F-term in Hitachi Engineering Services, Ltd. 4K042 AA06 AA24 BA09 DC01 DC02 DC03 EA01

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】配管または容器の溶接部に一つまたは複数
の熱伝対などの温度検出手段と、一つまたは複数の電気
抵抗線などの加熱手段を取り付け、パーソナルコンピュ
ータ,デジタルプログラム温度調節計,SCRユニッ
ト,電圧・電流変換器、一つまたは複数の温度記録計を
備えた自動熱処理手段により、材質と板厚をインプット
すると自動的に熱処理条件を決定し、所定速度で昇温
し、所定温度で所定時間保温し、所定速度で降温し、溶
接残留応力除去熱処理を行うことを特徴とする配管・容
器局部熱処理装置。
1. A personal computer, a digital program temperature controller, wherein one or a plurality of temperature detecting means such as a thermocouple and one or a plurality of heating means such as an electric resistance wire are attached to a weld of a pipe or a vessel. , SCR unit, voltage / current converter, automatic heat treatment means equipped with one or more temperature recorders, when the material and plate thickness are input, heat treatment conditions are automatically determined, the temperature is raised at a predetermined speed, and A piping / container local heat treatment apparatus characterized in that the heat is kept at a predetermined temperature for a predetermined time, the temperature is lowered at a predetermined speed, and heat treatment for removing residual stress is performed.
【請求項2】請求項1記載の配管・容器局部熱処理装置
において、 昇温・保温・降温の熱処理プログラムをステップA〜F
に区分し、ステップAをヒータ容量チェック,ステップ
Bをオーバシュート防止,ステップCを複数DP(デジ
タルプログラム温度調節計)の同期,ステップDを昇温
速度補償と温度差チェック,ステップEを保持温度補
償,保持温度平均化、そしてセンサ補正,ステップFを
降温速度補償とし、これらの連続したステップで溶接残
留応力除去熱処理を行うことを特徴とする配管・容器局
部熱処理装置。
2. The piping and vessel local heat treatment apparatus according to claim 1, wherein the heat treatment program for raising, lowering, and lowering the temperature includes steps A to F.
Step A checks heater capacity, Step B prevents overshoot, Step C synchronizes multiple DPs (Digital Program Temperature Controllers), Step D checks temperature rise rate and temperature difference, Step E holds temperature A pipe and vessel local heat treatment apparatus characterized in that compensation, holding temperature averaging, sensor correction, and step F are temperature reduction rate compensations, and a welding residual stress removing heat treatment is performed in these successive steps.
【請求項3】請求項2記載の配管・容器局部熱処理装置
において、 昇温速度補償で速度の乱れをチェックし、乱れを検出し
た場合、乱れを発生してから安定になるまでの時間を自
動的に延長時間としてセットすることを特徴とする配管
・容器局部熱処理装置。
3. The piping / container local heat treatment apparatus according to claim 2, wherein a speed disturbance is checked by a heating rate compensation, and when the disturbance is detected, a time period from the occurrence of the disturbance to a stable state is automatically set. A local heat treatment apparatus for piping and containers, which is set as an extended time.
【請求項4】請求項2記載の配管・容器局部熱処理装置
において、 保持温度補償で許容温度からの外れを検出した場合、外
れていた時間を自動的に延長時間としてセットすること
を特徴とする配管・容器局部熱処理装置。
4. The piping / container local heat treatment apparatus according to claim 2, wherein when a deviation from the allowable temperature is detected by the holding temperature compensation, the departure time is automatically set as an extension time. Pipe and vessel local heat treatment equipment.
【請求項5】請求項2記載の配管・容器局部熱処理装置
において、 降温速度補償で速度の乱れをチェックし、乱れを検出し
た場合、乱れを発生してから安定になるまでの時間を自
動的に延長時間としてセットすることを特徴とする配管
・容器局部熱処理装置。
5. The piping / vessel local heat treatment apparatus according to claim 2, wherein a temperature fluctuation is checked by a temperature lowering rate compensation, and when the fluctuation is detected, the time from the occurrence of the fluctuation to a stable state is automatically set. A local heat treatment apparatus for piping and containers, which is set as an extension time.
【請求項6】請求項1記載の配管・容器局部熱処理装置
において、 1〜4個の溶接部にそれぞれの温度検出手段と加熱手段
を取り付け、それぞれの熱処理プログラムパターンに従
って溶接残留応力除去熱処理を行うことを特徴とする配
管・容器局部熱処理装置。
6. The pipe and vessel local heat treatment apparatus according to claim 1, wherein each of the one to four welds is provided with a respective temperature detecting means and a heating means, and a heat treatment for removing residual stress is performed according to a respective heat treatment program pattern. A pipe and vessel local heat treatment apparatus characterized by the above-mentioned.
JP2000076318A 2000-03-14 2000-03-14 Local heat treating device for piping and vessel Pending JP2001262235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000076318A JP2001262235A (en) 2000-03-14 2000-03-14 Local heat treating device for piping and vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000076318A JP2001262235A (en) 2000-03-14 2000-03-14 Local heat treating device for piping and vessel

Publications (1)

Publication Number Publication Date
JP2001262235A true JP2001262235A (en) 2001-09-26

Family

ID=18594078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000076318A Pending JP2001262235A (en) 2000-03-14 2000-03-14 Local heat treating device for piping and vessel

Country Status (1)

Country Link
JP (1) JP2001262235A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005106050A1 (en) * 2004-05-04 2005-11-10 Norsk Hydro Asa Method for improving the fatigue properties in a structure and structure made by such method
CN108977647A (en) * 2018-09-27 2018-12-11 中国电建集团山东电力建设第工程有限公司 Boiler heating surface pin post weld heat treatment special tooling and heat treatment method
KR102511037B1 (en) * 2022-09-19 2023-03-17 주식회사 금가 SYSTEM FOR MONITORING HEAT TREATMENT based on IoST

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005106050A1 (en) * 2004-05-04 2005-11-10 Norsk Hydro Asa Method for improving the fatigue properties in a structure and structure made by such method
CN108977647A (en) * 2018-09-27 2018-12-11 中国电建集团山东电力建设第工程有限公司 Boiler heating surface pin post weld heat treatment special tooling and heat treatment method
CN108977647B (en) * 2018-09-27 2023-09-22 中国电建集团山东电力建设第一工程有限公司 Special tool for post-welding heat treatment of boiler heating surface pin and heat treatment method
KR102511037B1 (en) * 2022-09-19 2023-03-17 주식회사 금가 SYSTEM FOR MONITORING HEAT TREATMENT based on IoST

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