JPS59120394A

JPS59120394A - Automatic controlling method of preheating and post- heating temperature for welding

Info

Publication number: JPS59120394A
Application number: JP22687382A
Authority: JP
Inventors: Tomoyuki Saito; 斉藤　知行; Hiroshi Akane; 赤根　博; Makoto Toyouchi; 豊内　誠; Keiichi Yasuyoshi; 安吉　啓一; Kuniyoshi Hara; 原　邦芳
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1982-12-27
Filing date: 1982-12-27
Publication date: 1984-07-11

Abstract

PURPOSE:To maintain adequately the temp. for preheating and post-heating and to obtain a defectless weld zone by detecting electrically the quantity of the IR rays emitted by heating a body to be heated and adjusting the output of a heater according to the generated current thereof. CONSTITUTION:A body 1 to be welded is heated by the radiation heat of an electric heater 2 installed near the weld zone requiring preheating and post- heating. The heated body 1 emits IR rays according to the heating temp. and the rays are converted to a current value by a CdS cell 3 set on the rear of the body 1 whereby the temp. is detected. The detected current value is amplified by an amplifier 5 and is fed to a recorder 6, by which the measured temp. is continuously recorded. On the other hand, the detected value is fed to a variable resistance controller 7, which controls the input current to the heater 2 fed from a power source 8 for heating so as to make the same coincident with the initial set temp.

Description

【発明の詳細な説明】〔発明０１刊用分野１水弁明け１、溶接施工において健全な溶接部ン得るため
に行われる予熱および１輪熱のｌ？ｉＡ　ｉ’ｊケＪ丙
市に保持ｊ−るために好適な溶接予熱および後熱ｌ晶Ｉ
Ｗ自！１１市’Ｉ　Ｍｌｌ方ｌ去（１関するも０）であ
る。Detailed Description of the Invention [Invention 01 Publication Field 1 Water Valve Opening 1, Preheating and 1-wheel heating carried out to obtain a sound weld during welding work? Welding preheating and postheating l crystal I suitable for holding iA i'jke J C
W myself! 11 City 'I Mll way left (1 related also 0).

〔従来技術］従来、予熱および後熱の温度測定は５、一定温ＩＷ溶融
形の温度チョークまた（コ、熱電対Ｃ二よる実体測定を
行っていた、しかしながら、ｌ福ＩＷチョークの溶融ｌ
晶１す”（二よる方法では、ｍ融程度の判定が困難であ
を）、概１ｌｌｉ″ｉｔ晶［すθ）把握し７かできす、
また加熱ｈ１調簡の自動制到に活用できｆ「いといった
欠点がある。一方、熱小、対Ｃ−よる力“ｌ去では一１
妥即１＋　ｌ１ｇ　ｏ）ｉｌｉ　’；ｆ方法であ【）か
つ−熱市対一測１！点しか検知できないため、実作業１
はなかなか適［」１できｌ「いという問題がある。[Prior art] Conventionally, temperature measurements during preheating and postheating were carried out using constant-temperature IW melting type temperature chokes or thermocouples.
(It is difficult to judge the degree of melting with the two-way method), approximately 1lli"it crystal [su θ) can be determined, and 7 can be obtained.
In addition, it has the disadvantage that it cannot be used for automatic control of heating h1 preparation.On the other hand, if the heat is small and the force due to
Appropriately 1 + l1g o) ili '; f method [) and - heat market vs. 1! Since only points can be detected, actual work 1
There is a problem that it is not very suitable.

[Purpose of the invention]

本発明０）１」的げ、溶接時の予熱十５よび後熱０）加
熱温度管理Ｃ二おいて、非接触式で要体ｌ晶ＩＷ？電流
変化と１７で検知し、連続的に最低の電流消費屋で加熱
温度側（１■’ｉ’可能ｆ二Ｔること（：ある。The present invention 0) 1" target, preheating during welding 15 and postheating 0) heating temperature control C2, non-contact type main crystal IW? The current change is detected at 17, and the heating temperature side (1■'i'possible f2T) is continuously detected at the lowest current consumption.

〔発明の４１！’を姿〕本発明け、予熱および後熱されている被溶接部の実体Ａ
ｉＡＩｔを非接触式で電気的に連続側Ｔ、丁なわち、加
熱された実体の裏面から赤外線−十を検知し７、検知け
にばＳじ加熱装置の出カン稠頗してあらかじめ設定され
た温度をホ１１゛持Ｔろようにしたものである。[41 inventions! ] According to the present invention, the entity A of the part to be welded which is preheated and postheated
iAIt is electrically connected to the continuous side T in a non-contact manner, that is, the infrared rays are detected from the back side of the heated object. It is designed to maintain a temperature of 11 degrees.

〔発明０）実施例〕以Ｆ、本発明の一実施例として一子熱お」；び後ス′４
４ｋ・小数ヒーターの副射郭を・刈）Ｉｌｌ　１．、、
てイーＩうＪ↓、１合へ・１列（Ｘとを）、ａｔｌ、　
　２１叉Ｉ（二よを）説、１１月する、被加熱体１ｔＺ
、　−Ｙ−然および畿ｊｐＬ〜乞要１−イ）診接部せｊ
　（ｉ’；に設ｉ“１さλ七た小差ヒーダー２０）副ｒ
ａ、ｉ熱で加熱される、加熱さ才１だネル′加熱体１（
Ｔ［、加熱篇度に応じｆ、−赤外線４ヶ発月・１Ｔイ〕
が、この赤外線４乞被Ｊｉｌ”１熱１本１の裏面（−セ
ットしたＣｄＳセル３で電／ｆ１日１ｔｔｉＺ変侯［、
、で検知−正イ〕、検剣１された市′、流値は増幅４５
Ｃ−よｌ）増幅され、記録計６に送られて測定扁用゛ケ
連に的に記録Ｔ心。一方、検知′１ｂ流はロー変１１（
抗制１ｔ（Ｉ器７じ送られ、加熱用市諒８から送らｈて
きたｍ％ヒ−９−２ヘｏ＋人力串：冶ゲ当初０）設５１
　ｉｒＡ　ｌｕ　ｆニーｉ父Ｔろよう（二制市１１工４
）、本実施例によれは、非接画成で実体ｌ晶１ｖ′４′連に
的に記録でき、かつ加熱ｔｉｊ（７１連続制画がｌ笥ヒ
とな４゜〔発明の効果］、４：発ｌ９１（二、」：れは、従来は４既略０）温良
１１ｉ１１　ｆｉ１４１が断片的（二しか行われておら
す、７！Ｏ’ｒ度右足や過！ｉｌｉ　ｔ、ｒ　：市浦。[Invention 0) Example] Hereinafter, as an example of the present invention, Ichiko Netsuo';
4k・Cut the subprojection of the decimal heater) Ill 1. ,,
teeeiuJ↓, 1 go, 1 row (with X), atl,
21 prong I theory, November, heated object 1tZ
, -Y-Zen and KijpL ~ Request 1-a) Medical Department Sej
(i'; set i'1 λ7 small difference heater 20) sub r
a, i Heated with heat, heating body 1 (
T [, f depending on the heating degree, -4 months of infrared rays, 1 T]
However, the back side of this infrared ray 4 begged Jil' 1 heat 1 1 (- set CdS cell 3)
, Detection - Correct], Kenken 1 City', flow value is amplified 45
C-1) The signal is amplified and sent to the recorder 6, where it is recorded for measurement purposes. On the other hand, the detection '1b flow is low change 11 (
Pressure control 1 t (I vessel 7 was sent, m% heat sent from heating market 8 H - 9-2 o + manual skewer: 0 at the beginning of heating) Setting 51
irA lu fnee i father T royou (Nisei City 11th Engineering 4)
), according to this embodiment, it is possible to record directly on the real crystal 1v'4' continuous by non-contact formation, and heating tij (71 continuous printing is 4° [effect of the invention]), 4: Release l91 (two, ": It used to be 4, omitted 0) Onryo 11i11 fi141 is fragmentary (only two have been done, 7! O'r degree right foot! ili t, r: Ichiura .

浪費であったη熱および後熱０）７晶ｔＷ営理が、連続
的にかつ最低θ’ｌ　’４ｉ　？ｆｌ↑、消費甲Ｃｉ＋
う・二と／市１１能とｌ「るという効果がある。The wasted η heat and after heat 0)7 crystal tW operation are continuous and minimum θ'l '4i? fl↑, consumption A Ci+
It has the effect of ``ru''.

（ヌ１面のｌｉＩ′ＩＣドな説明第１１ツーは、加熱装置ｉＴとＣｄＳセルによる検知装
置の位ｉσ関係をボ″４〜科視１夾、！Ｘ″、２１ン１
は、検知型ｂ１Ｌにより加熱輔制ａｆ＋Ｉ？Ｔる本発明
方法２小Ｔ説明図−Ｃ”ある。(LiI'IC description on page 1) The 11th part describes the position iσ relationship between the heating device iT and the detection device using the CdS cell.
is the heating control af+I? by the detection type b1L? This invention method 2 Small T explanatory diagram-C".

１・・被加熱体　　　　　２・・電気ヒークー３・・・
ＣｄＳセル　　　　　４・・・赤外線５・・・増幅器　
　　　　　６・・・記録計７・・・可変抵抗制ω１１器
　　８・・・加熱用小；源５つ　　　　　　　　−Ｎ1. Heated object 2. Electric heater 3...
CdS cell 4...Infrared 5...Amplifier
6...Recorder 7...Variable resistance control ω11 device 8...Small for heating; 5 sources -N

Claims

[Claims]

1 Beg for heated body! Immediate heat sheath skin heating body with P key 1
1 The emitted infrared rays are detected commercially and their occurrence is
1 for Ichiya. Color, color, mud heating device 0) Skewers 1. The characteristics of the welding preheating and post-heating requirements are 1 crest 1 tooth 1 force method,