JP2002066782A - Detecting method for welding temperature - Google Patents
Detecting method for welding temperatureInfo
- Publication number
- JP2002066782A JP2002066782A JP2000312822A JP2000312822A JP2002066782A JP 2002066782 A JP2002066782 A JP 2002066782A JP 2000312822 A JP2000312822 A JP 2000312822A JP 2000312822 A JP2000312822 A JP 2000312822A JP 2002066782 A JP2002066782 A JP 2002066782A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- welding
- paint
- indicating
- discoloration
- 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
Links
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は溶接施工温度の検知
方法に関し、特に、示温塗料を用いた溶接施工温度の検
知方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a welding temperature and, more particularly, to a method for detecting a welding temperature using a thermosetting paint.
【０００２】[0002]
【従来の技術】鉄鋼材料を溶接施工する際は、溶接部の
機械的性質は、溶接施工温度と密接な関係にあることが
知られている。例えば、溶接施工温度がある温度以上と
なると、溶接部の引張強さ、降伏点、耐力および吸収エ
ネルギーが低下し、伸びが上昇する。また、逆に、溶接
施工温度がある温度以下となると、溶接部が硬化する。
そのため、従来は、温度計や測定装置などで溶接施工温
度を測定し、溶接部の品質を管理していた。2. Description of the Related Art When welding steel materials, it is known that the mechanical properties of a weld have a close relationship with the welding temperature. For example, when the welding temperature rises above a certain temperature, the tensile strength, yield point, proof stress, and absorbed energy of the welded portion decrease, and the elongation increases. Conversely, when the welding temperature falls below a certain temperature, the weld is hardened.
Therefore, conventionally, the welding temperature has been measured with a thermometer or a measuring device to control the quality of the welded portion.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来
は、温度計や測定装置などで溶接施工温度を測定してい
たため、測定に手間がかかった。また、それぞれの測定
結果を一々記録する必要があった。そのため、溶接部が
多い場合、時間的にも、費用的にも、溶接施工温度の測
定に要するコストが高いという問題があった。However, conventionally, since the welding temperature was measured by a thermometer or a measuring device, the measurement was troublesome. In addition, it was necessary to record each measurement result one by one. Therefore, when there are many welds, there is a problem that the cost required for measuring the welding execution temperature is high both in terms of time and cost.
【０００４】本発明は、これらの課題を解決するために
なされたもので、手軽な方法で溶接施工温度を検知する
ことができ、かつ、溶接施工温度の検知結果を簡単に記
録することができる、溶接施工温度の検知方法を提供す
ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and can detect a welding temperature by a simple method, and can easily record a result of detecting the welding temperature. Another object of the present invention is to provide a method for detecting a welding construction temperature.
【０００５】[0005]
【課題を解決するための手段】本発明は、あらかじめ、
溶接予定部の側傍に、示温塗料を溶接予定部から離れる
方向に所定の長さで塗布しておき、示温塗料の溶接によ
る変色の長さから溶接施工温度を検知する構成とした。
このように構成することで、溶接施工温度を手軽に検知
することができる。Means for Solving the Problems The present invention provides:
A temperature-indicating paint is applied in a predetermined length in a direction away from the welding-targeted part, and a welding working temperature is detected from a length of discoloration of the temperature-indicating paint by welding.
With this configuration, the welding temperature can be easily detected.
【０００６】また、本発明は、あらかじめ、溶接予定部
の側傍に、それぞれ変色温度が異なる複数の示温塗料を
溶接線方向に対して複数並列に塗布しておき、示温塗料
の溶接による変色から溶接施工温度を検知する構成とし
た。このように構成することで、溶接施工温度を手軽に
検知することができる。Further, the present invention provides a method in which a plurality of thermosetting paints having different discoloration temperatures are applied in parallel to a welding line direction in advance in the side of a scheduled welding portion in order to prevent discoloration due to welding of the thermosetting paint. The welding construction temperature is detected. With this configuration, the welding temperature can be easily detected.
【０００７】そして、溶接施工温度は、パス間温度、溶
接入熱、予熱および後熱とした。これらの温度を検知す
ることで、溶接部の機械的性質を管理することができ
る。[0007] The welding temperature was defined as inter-pass temperature, welding heat input, preheating and post-heating. By detecting these temperatures, the mechanical properties of the weld can be managed.
【０００８】また、示温塗料を変色温度の高低順に塗布
した。示温塗料を変色温度の高低順に塗布することで、
それぞれの示温塗料の変色を見比べることができるの
で、溶接施工温度が一目瞭然に分かる。[0008] Further, the temperature-indicating paint was applied in order of increasing and decreasing color changing temperature. By applying the temperature-indicating paint in descending order of the discoloration temperature,
Since the discoloration of each temperature indicating paint can be compared, the welding temperature can be clearly understood.
【０００９】さらに、示温塗料には不可逆性のものを用
いた。示温塗料に不可逆性のものを用いることで、母材
の表面に溶接施工温度の検知結果を簡単に記録すること
ができる。Further, an irreversible one is used as the temperature indicating paint. By using an irreversible one for the temperature indicating paint, the detection result of the welding execution temperature can be easily recorded on the surface of the base material.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して詳細に説明する。まず、請求項1に記載の溶
接施工温度の検知方法について説明する。図１および図
２に示すように、示温塗料１は、溶接施工前に、母材２
ａと母材２ｂの溶接予定部３の側傍に、溶接予定部３の
縁から一定の距離を隔てて、所定の幅Ｄと所定の長さＬ
で、溶接予定部３から離れる方向に塗布される。なお、
この実施例では、示温塗料１は母材２ａの上面に塗布し
たが、示温塗料１は母材２ａの側面に塗布することもで
きる。Embodiments of the present invention will be described below in detail with reference to the drawings. First, a method for detecting a welding execution temperature according to claim 1 will be described. As shown in FIG. 1 and FIG. 2, the thermosetting paint 1 has a base material 2 before welding.
a, a predetermined width D and a predetermined length L, at a predetermined distance from the edge of the scheduled welding portion 3 on the side of the scheduled welding portion 3 of the base metal 2b.
Is applied in a direction away from the scheduled welding portion 3. In addition,
In this embodiment, the temperature indicating paint 1 is applied to the upper surface of the base material 2a, but the temperature indicating paint 1 may be applied to the side surface of the base material 2a.
【００１１】この実施例では、示温塗料１は、母材２ａ
の溶接予定部３側の縁から約１０ｍｍの距離を隔てて、
幅Ｄが７ｍｍ、長さＬが１００ｍｍで塗布した。なお、
示温塗料１が塗布される幅Ｄは、示温塗料１の変色を目
視するのに十分であれば、この幅に特に限定されるもの
ではない。また、示温塗料１が塗布される長さＬは、示
温塗料１の変色の長さＸを示温塗料１が変色する温度範
囲の上限近くでも判別できるように、十分な長さで塗布
する必要がある。In this embodiment, the temperature-indicating paint 1 comprises a base material 2a.
At a distance of about 10 mm from the edge of the part 3 to be welded,
The coating was performed with a width D of 7 mm and a length L of 100 mm. In addition,
The width D to which the temperature-indicating paint 1 is applied is not particularly limited as long as it is sufficient to visually observe the discoloration of the temperature-indicating paint 1. Further, the length L to which the temperature indicating paint 1 is applied needs to be applied with a sufficient length so that the discoloration length X of the temperature indicating paint 1 can be determined even near the upper limit of the temperature range in which the temperature indicating paint 1 changes color. is there.
【００１２】示温塗料１には、温度が上昇した際に、特
定の温度範囲で単色変化する単色変化示温塗料を用い
る。なお、単色変化とは、ある色から別な色へと、一度
だけ変化することである。単色変化示温塗料には様々な
種類があり、それぞれ、変色する温度範囲が異なる。As the temperature-indicating paint 1, a single-color changing temperature-indicating paint that changes monochromatically in a specific temperature range when the temperature rises is used. In addition, a monochromatic change is a change from one color to another color only once. There are various types of monochromatic change-indicating paints, each of which has a different color changing temperature range.
【００１３】例えば、溶接施工温度としてパス間温度を
測定する場合は、示温塗料１には、１５０℃〜４５０℃
の温度範囲で変色する示温塗料を用いるとよい。これ
は、溶接金属の機械的性質が確保されるためのパス間温
度の範囲が定まっているためである。ＪＩＳの規定で
は、溶接ワイヤにＪＩＳＺ３３１２のＹＧＷ１１を用
い、適用鋼材の引張強さが４９０Ｎ／ｍｍ2級の場合で
は、溶接金属の機械的性質が確保されるためのパス間温
度の上限は約２５０℃とされている。For example, when the temperature between passes is measured as the welding execution temperature, the temperature-indicating paint 1 has a temperature of 150 ° C. to 450 ° C.
It is preferable to use a temperature-indicating paint that changes color in the above temperature range. This is because the range of the inter-pass temperature for securing the mechanical properties of the weld metal is determined. According to JIS regulations, when the YGW11 of JISZ3312 is used for the welding wire and the tensile strength of the applied steel material is 490 N / mm 2 class, the upper limit of the inter-pass temperature for ensuring the mechanical properties of the weld metal is about 250. ° C.
【００１４】また、示温塗料１は、母材２ａの表面に溶
接予定部３から離れる方向に塗布された場合、あらかじ
め定められた温度範囲内において、加熱された温度によ
って変色の長さＸが異なる。示温塗料１の変色の長さＸ
は、加熱された温度が高くなるに従って長くなる。When the temperature-indicating paint 1 is applied to the surface of the base material 2a in a direction away from the scheduled welding portion 3, the discoloration length X varies depending on the heated temperature within a predetermined temperature range. . Length X of discoloration of thermal paint 1
Becomes longer as the heated temperature becomes higher.
【００１５】例えば、示温塗料１の変色する温度範囲が
１５０℃〜４５０℃°である場合は、図３に示すよう
に、温度が１５０℃、２５０℃、３５０℃および４５０
℃の際、示温塗料１の変色の長さＸは、それぞれ、
Ｘ1、Ｘ2、Ｘ3およびＸ4である。なお、加熱される温度
と示温塗料１の変色の長さＸとの関係は、あらかじめ、
実験等により求めておく。この実施例では、Ｘ1、Ｘ2、
Ｘ3およびＸ4は、それぞれ、２０ｍｍ、４０ｍｍ、６０
ｍｍおよび８０ｍｍであることがあらかじめ求められて
いるものとする。For example, when the temperature range in which the temperature indicating paint 1 changes color is 150 ° C. to 450 ° C., the temperatures are 150 ° C., 250 ° C., 350 ° C. and 450 ° C., as shown in FIG.
At the time of ° C., the discoloration length X of the temperature indicating paint 1 is
X 1 , X 2 , X 3 and X 4 . The relationship between the heating temperature and the discoloration length X of the temperature indicating paint 1 is determined in advance by
Obtain it by experiment. In this embodiment, X 1 , X 2 ,
X 3 and X 4 are 20 mm, 40 mm, and 60 mm, respectively.
mm and 80 mm are required in advance.
【００１６】示温塗料１の溶接施工後の変化を、図４
（ａ）および（ｂ）に示す。図中の斜線で示した部分が
示温塗料１の変色部分である。図４（ａ）から、示温塗
料１の変色の長さＸは、約２０ｍｍであることが分か
る。また、図４（ｂ）から、示温塗料１が変色の長さＸ
は、約８０ｍｍであることが分かる。なお、示温塗料１
の変色の長さＸは、ノギスやスケールにて測定すればよ
い。FIG. 4 shows the change after the welding operation of the thermosetting paint 1.
(A) and (b). The shaded portion in the figure is the discolored portion of the temperature-sensitive paint 1. From FIG. 4A, it can be seen that the length X of the discoloration of the thermographic paint 1 is about 20 mm. Also, from FIG. 4B, the temperature-indicating coating material 1 has a discoloration length X.
Is about 80 mm. In addition, temperature indicating paint 1
May be measured with a vernier caliper or a scale.
【００１７】このことから、図４（ａ）では、示温塗料
１が変色の長さＸが約２０ｍｍであることから、溶接部
４の溶接施工温度は、約１５０℃であったことが分か
る。また、図４（ｂ）では、示温塗料１が変色の長さＸ
が約８０ｍｍであることから、溶接部４の溶接施工温度
は、約４５０℃であったことが分かる。From FIG. 4A, it can be seen that the welding temperature of the welded portion 4 was about 150 ° C. since the length X of the discoloration of the temperature-indicating paint 1 was about 20 mm. In FIG. 4B, the temperature indicating paint 1 has a discoloration length X.
Is about 80 mm, which means that the welding temperature of the welded portion 4 was about 450 ° C.
【００１８】したがって、溶接ワイヤにＪＩＳＺ３３１
２のＹＧＷ１１を用い、適用鋼材の引張強さが４９０Ｎ
／ｍｍ2級の場合は、図４（ａ）では、検知された溶接
施工温度がＹＧＷ１１のパス間温度の上限値である２５
０℃よりも低いので、溶接部４の機械的性質は確保され
ていると判断される。また、図４（ｂ）では、検知され
た溶接施工温度がＹＧＷ１１のパス間温度の上限値であ
る２５０℃よりも高いので、溶接部４の機械的性質は確
保されていないと判断される。Therefore, JISZ331 is used for the welding wire.
2, the tensile strength of the applied steel material is 490 N
/ Mm 2 class, in FIG. 4A, the detected welding execution temperature is the upper limit value of the inter-pass temperature of the YGW 11 of 25.
Since it is lower than 0 ° C., it is determined that the mechanical properties of the welded portion 4 are secured. In FIG. 4B, since the detected welding temperature is higher than 250 ° C., which is the upper limit of the interpass temperature of the YGW 11, it is determined that the mechanical properties of the welded portion 4 are not ensured.
【００１９】以上のように、示温塗料１の変色の長さＸ
は溶接施工時に溶接部４に加熱された温度によりそれぞ
れ異なるので、溶接施工後に示温塗料１が変色の長さＸ
を測定することにより、溶接施工温度が適切であったか
否かを手軽に検知することができる。なお、溶接施工温
度をより詳細に求めたければ、あらかじめ、温度と示温
塗料１の変色の長さＸとの関係を、より詳しく求めてお
けばよい。As described above, the discoloration length X of the temperature-indicating paint 1
Is different depending on the temperature heated to the welded portion 4 during welding, so that the temperature-indicating paint 1 has a discoloration length X after welding.
, It is possible to easily detect whether or not the welding temperature is appropriate. If the welding temperature is to be determined in more detail, the relationship between the temperature and the discoloration length X of the temperature indicating paint 1 may be determined in advance.
【００２０】次に、請求項２に記載の溶接施工温度の検
知方法について説明する。図５に示すように、それぞれ
変色温度が異なる複数の示温塗料１ａ〜１ｄは、溶接施
工前に、母材２ａと母材２ｂの溶接予定部３の側傍に、
溶接線方向に対して複数並列に塗布される。また、示温
塗料１ａ〜１ｄは、溶接予定部３の縁から一定の距離を
隔てて、所定の幅Ｄ、所定の長さＬおよび所定の間隔Ｗ
で、溶接予定部３から離れる方向に塗布される。なお、
この実施例では、示温塗料１ａ〜１ｄは母材２ａの上面
に塗布したが、示温塗料１ａ〜１ｄは母材１ａの側面に
塗布することもできる。また、母材２ａに塗布する示温
塗料の数は、必要に応じて適宜変更することができる。Next, a method for detecting a welding working temperature according to a second aspect will be described. As shown in FIG. 5, a plurality of thermosetting paints 1a to 1d, each having a different discoloration temperature, are placed beside the scheduled welding portion 3 of the base material 2a and the base material 2b before welding.
A plurality of coatings are applied in parallel to the welding line direction. In addition, the temperature indicating paints 1a to 1d are separated from the edge of the scheduled welding portion 3 by a predetermined distance, have a predetermined width D, a predetermined length L, and a predetermined interval W.
Is applied in a direction away from the scheduled welding portion 3. In addition,
In this embodiment, the temperature indicating paints 1a to 1d are applied to the upper surface of the base material 2a, but the temperature indicating paints 1a to 1d may be applied to the side surfaces of the base material 1a. Further, the number of temperature indicating paints applied to the base material 2a can be appropriately changed as needed.
【００２１】この実施例では、示温塗料１ａ〜１ｄは、
母材２ａの溶接予定部３側の縁から約１０ｍｍの距離を
隔てて、幅Ｄが７ｍｍ、長さＬが１００ｍｍ、間隔Ｗが
１０ｍｍで塗布した。なお、示温塗料１ａ〜１ｄが塗布
される幅Ｄ、長さＬおよび間隔Ｗは、この値に特に限定
されるものではない。In this embodiment, the temperature indicating paints 1a to 1d are:
The base material 2a was applied at a distance of about 10 mm from an edge of the base material 2a on the side of the portion 3 to be welded, with a width D of 7 mm, a length L of 100 mm, and an interval W of 10 mm. The width D, length L, and interval W to which the temperature indicating paints 1a to 1d are applied are not particularly limited to these values.
【００２２】示温塗料１には、温度が上昇した際に、特
定の温度範囲で単色変化する単色変化示温塗料を用い
る。例えば、溶接施工温度としてパス間温度を測定する
場合は、示温塗料１ａ、１ｂ、１ｃおよび１ｄには、そ
れぞれ、変色温度が１５０℃、２５０℃、３５０℃およ
び４５０℃である示温塗料を用いるとよい。As the temperature-indicating paint 1, a single-color changing temperature-indicating paint which changes color in a specific temperature range when the temperature rises is used. For example, when measuring the inter-pass temperature as the welding execution temperature, when the temperature indicating paints 1a, 1b, 1c, and 1d use temperature indicating paints having discoloration temperatures of 150 ° C, 250 ° C, 350 ° C, and 450 ° C, respectively. Good.
【００２３】そして、示温塗料１ａ〜１ｄは、変色温度
の高低順に塗布する。示温塗料１ａ〜１ｄを変色温度の
高低順に塗布することで、それぞれの示温塗料の変色を
簡単に見比べることができる。The temperature indicating paints 1a to 1d are applied in descending order of color change temperature. By applying the temperature indicating paints 1a to 1d in descending order of the discoloration temperature, the discoloration of each temperature indicating paint can be easily compared.
【００２４】示温塗料１ａ〜１ｄの溶接施工後の変化を
図６に示す。図中の斜線で示した部分が示温塗料１ａ〜
１ｄの変色部分である。図６から、示温塗料１ａ、１ｂ
および１ｃは溶接施工時の温度上昇により変色している
のが分かる。また、示温塗料１ｄは変色していないこと
が分かる。FIG. 6 shows the changes of the temperature indicating paints 1a to 1d after welding. The shaded portions in the drawing indicate the temperature-indicating paints 1a to 1a.
This is the discolored portion 1d. As shown in FIG. 6, the temperature indicating paints 1a and 1b
It can be seen that the colors 1c and 1c are discolored due to a rise in temperature during welding. In addition, it can be seen that the temperature indicating paint 1d has not changed color.
【００２５】したがって、変色温度が３５０℃である示
温塗料１ｃが変色しており、変色温度が４５０℃である
示温塗料１ｄが変色していないことから、パス間温度は
３５０℃から４５０℃の間であることが分かる。溶接ワ
イヤにＪＩＳＺ３３１２のＹＧＷ１１を用い、適用鋼材
の引張強さが４９０Ｎ／ｍｍ2級の場合は、検知された
パス間温度がＹＧＷ１１のパス間温度の上限値である２
５０℃よりも高いので、溶接部４の機械的性質は確保さ
れていないと判断される。Therefore, the temperature-indicating paint 1c having a discoloration temperature of 350 ° C. is discolored, and the temperature-indicating paint 1d having a discoloration temperature of 450 ° C. is not discolored. It turns out that it is. When YGW11 of JISZ3312 is used for the welding wire and the tensile strength of the applied steel is 490 N / mm 2 class, the detected interpass temperature is the upper limit of the interpass temperature of YGW11.
Since it is higher than 50 ° C., it is determined that the mechanical properties of the weld 4 are not ensured.
【００２６】以上のように、示温塗料１ａ〜１ｄの変色
温度をパス間温度の上限である２５０℃とその前後に設
定しておけば、示温塗料１ａ〜１ｄの変色から溶接施工
時のパス間温度が適切である否かを手軽に検知すること
ができる。なお、パス間温度をより詳細に求める場合
は、示温塗料１ａ〜１ｄに互いの変色温度が近い示温塗
料を用いればよい。As described above, if the discoloration temperature of the temperature indicating paints 1a to 1d is set to about 250 ° C., which is the upper limit of the interpass temperature, before and after 250 ° C., the discoloration temperature of the temperature indicating paints 1a to 1d will be changed from the discoloration temperature to the pass during welding. Whether or not the temperature is appropriate can be easily detected. When the temperature between passes is determined in more detail, a temperature indicating paint having a discoloration temperature close to the temperature indicating paints 1a to 1d may be used.
【００２７】また、示温塗料１ａ〜１ｄの中に変色温度
が低温の示温塗料を入れておくことで、検査の信頼性を
高めることができる。例えば、パス間温度を測定する際
は、示温塗料１ａに変色温度が１５０℃であるものを用
いる。示温塗料１ａは溶接施工時には必ず変色するの
で、示温塗料１ａの変色から示温塗料１ａ〜１ｄが溶接
施工前に塗布されたことを証明することができる。The reliability of the inspection can be improved by putting the temperature indicating paint having a low discoloration temperature in the temperature indicating paints 1a to 1d. For example, when measuring the temperature between passes, a temperature indicating paint 1a having a discoloration temperature of 150 ° C. is used. Since the temperature indicating paint 1a always changes color during welding, the discoloration of the temperature indicating paint 1a can prove that the temperature indicating paints 1a to 1d have been applied before welding.
【００２８】また、示温塗料に不可逆性のものを用いる
と、溶接施工後にも示温塗料は復色しないので、溶接施
工温度の検知結果を母材２ａの表面に記録することがで
きる。一般に市販されている不可逆性の示温塗料は約１
年間は褪色しないので、検知結果は溶接施工後も長期間
にわたって母材２ａの表面上に残される。Further, if an irreversible temperature-indicating paint is used, the temperature-indicating paint does not recolor after welding, so that the detection result of the welding temperature can be recorded on the surface of the base material 2a. The commercially available irreversible thermosetting paint is about 1
Since the color does not fade for a year, the detection result remains on the surface of the base material 2a for a long time after welding.
【００２９】[0029]
【発明の効果】以上のことから、溶接施工温度を手軽な
方法で簡単に検知することができる。また、溶接施工温
度の検知結果を母材の表面に記録することができる。As described above, the welding temperature can be easily detected by a simple method. In addition, the detection result of the welding execution temperature can be recorded on the surface of the base material.
【図１】母材とその母材に塗布された示温塗料を示す平
面図である。FIG. 1 is a plan view showing a base material and a temperature indicating paint applied to the base material.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】温度と示温塗料の変色の長さとの関係を示す図
である。FIG. 3 is a diagram showing a relationship between a temperature and a length of discoloration of a thermosetting paint.
【図４】溶接施工後の示温塗料の変色の長さを示す図で
ある。FIG. 4 is a view showing the length of discoloration of a thermosetting paint after welding.
【図５】母材とその母材に塗布された複数の示温塗料を
示す平面図である。FIG. 5 is a plan view showing a base material and a plurality of temperature indicating paints applied to the base material.
【図６】溶接施工後の示温塗料の変色を示す図である。FIG. 6 is a view showing discoloration of a thermosetting paint after welding.
１ 示温塗料 ２ａ 母材 ２ｂ 母材 ３ 溶接予定部 ４ 溶接部 DESCRIPTION OF SYMBOLS 1 Temperature-indicating paint 2a Base material 2b Base material 3 Scheduled welding part 4 Welded part
Claims (8)
料を前記溶接予定部から離れる方向に所定の長さで塗布
しておき、前記示温塗料の溶接による変色の長さから溶
接施工温度を検知することを特徴とする、溶接施工温度
の検知方法。1. A temperature-indicating paint is applied in advance to a side of a scheduled welding portion in a direction away from the scheduled welding portion in a predetermined length, and the welding temperature is determined based on the length of discoloration caused by welding of the temperature-indicating paint. A method for detecting a welding construction temperature, characterized by detecting a welding temperature.
れ変色温度が異なる複数の示温塗料を溶接線方向に対し
て複数並列に塗布しておき、前記示温塗料の溶接による
変色から溶接施工温度を検知することを特徴とする、溶
接施工温度の検知方法。2. A plurality of thermosetting paints each having a different discoloration temperature are applied in parallel in the direction of the welding line to the side of the portion to be welded in advance. A method for detecting a welding construction temperature, characterized by detecting a welding temperature.
とを特徴とする、請求項１または２に記載の溶接施工温
度の検知方法。3. The method according to claim 1, wherein the welding temperature is an inter-pass temperature.
を特徴とする、請求項１または２に記載の溶接施工温度
の検知方法。4. The method according to claim 1, wherein the welding temperature is welding heat input.
徴とする、請求項１または２に記載の溶接施工温度の検
知方法。5. The method according to claim 1, wherein the welding temperature is preheating.
徴とする、請求項１または２に記載の溶接施工温度の検
知方法。6. The method according to claim 1, wherein the welding temperature is post-heating.
されることを特徴とする、請求項２から６のいずれかに
記載の溶接施工温度の検知方法。7. The method for detecting a welding temperature according to claim 2, wherein the temperature-indicating paint is applied in descending order of the color change temperature.
徴とする、請求項１から７のいずれかに記載の溶接施工
温度の検知方法。8. The method according to claim 1, wherein the temperature indicating paint is irreversible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000312822A JP2002066782A (en) | 2000-06-15 | 2000-10-13 | Detecting method for welding temperature |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-179592 | 2000-06-15 | ||
| JP2000179592 | 2000-06-15 | ||
| JP2000312822A JP2002066782A (en) | 2000-06-15 | 2000-10-13 | Detecting method for welding temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002066782A true JP2002066782A (en) | 2002-03-05 |
Family
ID=26593981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000312822A Pending JP2002066782A (en) | 2000-06-15 | 2000-10-13 | Detecting method for welding temperature |
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| Country | Link |
|---|---|
| JP (1) | JP2002066782A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008296490A (en) * | 2007-06-01 | 2008-12-11 | National Printing Bureau | Intaglio printing machine pattern roller and inking device using the same |
| JP2011140341A (en) * | 2010-01-08 | 2011-07-21 | Chugoku Electric Power Co Inc:The | Monitoring system and monitoring method for boiling over |
| CN102189306A (en) * | 2010-03-17 | 2011-09-21 | 株式会社鹭宫制作所 | Excess temperature detection method and fluid control equipment in tubing soldering |
| CN110672224A (en) * | 2019-10-11 | 2020-01-10 | 上海电机学院 | Temperature measuring device based on organic reversible temperature sensing material |
-
2000
- 2000-10-13 JP JP2000312822A patent/JP2002066782A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008296490A (en) * | 2007-06-01 | 2008-12-11 | National Printing Bureau | Intaglio printing machine pattern roller and inking device using the same |
| JP2011140341A (en) * | 2010-01-08 | 2011-07-21 | Chugoku Electric Power Co Inc:The | Monitoring system and monitoring method for boiling over |
| CN102189306A (en) * | 2010-03-17 | 2011-09-21 | 株式会社鹭宫制作所 | Excess temperature detection method and fluid control equipment in tubing soldering |
| JP2011196688A (en) * | 2010-03-17 | 2011-10-06 | Saginomiya Seisakusho Inc | Overtemperature detection method at pipe brazing, and fluid control apparatus |
| CN104070255A (en) * | 2010-03-17 | 2014-10-01 | 株式会社鹭宫制作所 | Excess temperature detection method and fluid control equipment in tubing soldering |
| CN110672224A (en) * | 2019-10-11 | 2020-01-10 | 上海电机学院 | Temperature measuring device based on organic reversible temperature sensing material |
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