JPS6029421A - Method and jig for continuous heat treatment of metallic pipe - Google Patents
Method and jig for continuous heat treatment of metallic pipeInfo
- Publication number
- JPS6029421A JPS6029421A JP13785383A JP13785383A JPS6029421A JP S6029421 A JPS6029421 A JP S6029421A JP 13785383 A JP13785383 A JP 13785383A JP 13785383 A JP13785383 A JP 13785383A JP S6029421 A JPS6029421 A JP S6029421A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- jig
- metal
- tubes
- heating
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000003247 decreasing effect Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 49
- 229910052751 metal Inorganic materials 0.000 claims description 49
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 230000004907 flux Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は油井管等、と゛して用いる金属管の複数本を連
続的に熱処理する方法とこの方法を実施する際に使用す
る治具に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously heat-treating a plurality of metal pipes, such as oil country tubular goods, and a jig used to carry out this method.
金属管はその使用目的などに応じて焼入れなどの適宜熱
処理を施すが、熱処理に際しては肢管の内部に冷却水が
進入しないように工夫しないと、熱処理中の冷却水の進
入によって温度バランスを崩し安定した品質の確保がで
きない。Metal tubes are subjected to appropriate heat treatment such as quenching depending on the purpose of use, but if measures are not taken to prevent cooling water from entering the inside of the pipe during heat treatment, the temperature balance may be disrupted due to the ingress of cooling water during heat treatment. Unable to ensure stable quality.
従来、熱処理中に金属管の内部に冷却水が進入すること
がないようにするため、管端に全屈製栓体状の冶具を被
着して熱処理することが行われているが、従来方法は冷
却水の進入を防止できる反面、熱処理に伴う加熱の際、
前記金属製の栓状冶具が加熱に影響を及ぼして温度ハラ
ンス不良を生じ、安定な品質が得にくいという新たな問
題が発生した。例えば、炭素鋼製の鋼管の熱処理におい
て加熱手段に誘導加熱を用いると、前記栓状の治具が磁
束に悪影響を及ぼし、治具を被着した管端近傍が過加熱
されて温度バランス不良が生じるのである。Conventionally, in order to prevent cooling water from entering the inside of a metal tube during heat treatment, a fully curved stopper-shaped jig was attached to the end of the tube during heat treatment. Although it is possible to prevent cooling water from entering, during heating associated with heat treatment,
A new problem occurred in that the metal plug-shaped jig affected heating and caused poor temperature tolerance, making it difficult to obtain stable quality. For example, when induction heating is used as a heating means in heat treatment of carbon steel pipes, the plug-shaped jig has a negative effect on the magnetic flux, causing overheating near the end of the pipe where the jig is attached, resulting in poor temperature balance. It happens.
そこで上記のような熱処理に際して管内に冷却水を進入
させず、且つ、加熱時にも殆んど影響を及ぼすことのな
い治具の開発が待たれる訳であるが、このような治具が
開発されたとしても、例えば、複数の同一材質、形状の
被処理管の熱処理に際し、容管ごとに新たに開発された
冷却水進入防止治具を被着して所定の熱処理を施し、こ
の後いちいち被着されている前記治具を取り外すといっ
た作業形態をとったのでは、凡そ非能率的であるのみな
らず余Ｈ１な労力を要することとなる。Therefore, there is a need for the development of a jig that does not allow cooling water to enter the pipe during the heat treatment described above and has almost no effect during heating, but such a jig has not been developed. For example, when heat treating multiple tubes of the same material and shape, a newly developed cooling water intrusion prevention jig is applied to each tube and the predetermined heat treatment is applied, and then the tubes are coated one by one. If the work is to remove the attached jig, it is not only inefficient but also requires extra effort.
本発明は上記のような点に鑑み、被処理管が同一材質、
形状のものである場合には、金属管の送り態様に工夫を
こらすと共に、冷却水進入防止治具を用いて前記複数の
被処理管を連続的に熱処理することができるようにする
一方、前記治具により内部に冷却水を進入させないのみ
ならず、加熱に殆んど影響を及ぼすことがなく、更に、
該治具の取り外しを人手によらず行うことができる金属
管の連続的な熱処理方法及びこの方法を実施する際に使
用する冷却水進入防止治具を提供することを目的として
なされたもので、方法の構成は、直列して置かれる複数
の金属管を同時に前記管の軸方向に送るため前記管の長
手方向に沿って列設したローラ等による複数群の送り手
段と、該送り手段によって前進させられる金属管をその
長手方向に沿って連続的に加熱し冷却する定置した誘導
子などによる加熱冷却手段とからなる熱処理装置におけ
る前記送り手段−を、前記加熱冷却熱手段がほぼ中間点
にあり、且つ、１本の金属管のほぼ２倍の長さに亘る区
間での送り速度を前記管の進み側に向けて順次小さくな
るようにして作動させる一方、前記送り手段に直列状態
で前進させられる金属管同士の当接部には、両金属管の
端部を閉塞するため金屈製薄、板材により形成した蓋体
状の冶具を被着し該管同士を連結しておくことを特徴と
するものであり、また、上記治具の構成は、金属製の薄
板材により、金属管の端面壁に適合するフランジ部と、
該フランジ部の前後両面にあって管端内面に遊嵌支持さ
れる嵌合部とを形成し、直列した金属管の対向する管端
面を閉塞するようにしたことを特徴とするものである。In view of the above points, the present invention provides that the tubes to be treated are made of the same material,
shape, the method of feeding the metal tubes should be devised, and a cooling water intrusion prevention jig should be used to enable continuous heat treatment of the plurality of tubes to be treated. The jig not only prevents cooling water from entering the interior, but also has almost no effect on heating.
The purpose of this invention is to provide a method for continuous heat treatment of metal pipes that allows removal of the jig without manual intervention, and a jig for preventing the ingress of cooling water used when carrying out this method. The structure of the method includes a plurality of groups of feeding means such as rollers arranged along the longitudinal direction of the tubes in order to simultaneously feed a plurality of metal tubes placed in series in the axial direction of the tubes; The feeding means in the heat treatment apparatus comprises heating and cooling means such as a stationary inductor that continuously heats and cools the metal tube along its longitudinal direction, and the heating and cooling heating means is located approximately at the midpoint. , and the metal tube is operated in such a manner that the feeding speed in a section extending approximately twice the length of one metal tube is gradually decreased toward the advancing side of the tube, while the tube is advanced in series with the feeding means. In order to close the ends of both metal tubes, a lid-like jig made of a thin plate made of Kinkure is attached to the abutting part of the metal tubes, which connect the tubes together. The jig has a flange portion made of a thin metal plate that fits the end wall of the metal tube;
A fitting part is formed on both the front and rear surfaces of the flange part and is loosely fitted and supported on the inner surface of the tube end, thereby closing the opposing tube end surfaces of the metal tubes arranged in series.
次に、本発明方法及びこの方法に用いる蓋体の実施例を
図に拠り説明する。Next, examples of the method of the present invention and the lid body used in this method will be described with reference to the drawings.
第１図は本発明方法を実施する装置の一例を示す平面図
で、１，２．３は、金属管Ｐ１〜Ｐ３を図の左方へ進行
させるため管を挟持する向きで２個を１組とし６組装設
したピンチローラであって、ここでは各２組のピンチロ
ーラ群の３群により送り手段Ａを構成しである。FIG. 1 is a plan view showing an example of an apparatus for carrying out the method of the present invention, and 1, 2.3 are two metal tubes P1 to P3 held together in one direction in order to advance them to the left in the figure. Six sets of pinch rollers are installed, and in this case, three groups of two pinch roller groups each constitute a feeding means A.
面して、上記送り手段Ａは少なくともその全長が処理す
べき金属管Ｐ１の２本分以上の長さに形成しである。一
方、４は前記送り手段への前方（第１図の左方）に設け
たローラコンベアで、前記送り手段Ａとは適宜離隔させ
て送り手段Ａに連設し、送り手段Ｂを構成する。Ｃは前
記送り手段Ａの送り方向中程に設けた環状誘導子５と該
誘導子と一体に形成した環状の冷却水ジャケット６とか
ら成る加熱冷却手段で、前記管Ｐ１などが通過する際こ
れをその長手方向に沿って連続的に加熱、冷却するもの
である。尚、加熱手段は上記誘導子に限られず、例えば
環状のガスバーナ、或はガス、電気等を熱源とする加熱
炉形式のものであってもよい。On the other hand, the feeding means A is formed so that at least its entire length is equal to or longer than two metal pipes P1 to be processed. On the other hand, 4 is a roller conveyor provided in front of the feeding means (left side in FIG. 1), which is connected to the feeding means A at an appropriate distance from the feeding means A, and constitutes the feeding means B. C is a heating and cooling means consisting of an annular inductor 5 provided in the middle of the feeding direction of the feeding means A and an annular cooling water jacket 6 formed integrally with the inductor, and when the pipe P1 etc. passes through it, it is heated and cooled. is heated and cooled continuously along its length. Note that the heating means is not limited to the above-mentioned inductor, and may be, for example, an annular gas burner or a heating furnace type that uses gas, electricity, or the like as a heat source.
而して、上記装置では、送り手段Ａにおける各日−ラ群
１，２．３の各回転速度即ち送り速度Ｓｌ。In the above-mentioned apparatus, each rotational speed of each day-ra group 1, 2.3 in the feeding means A, that is, the feeding speed Sl.
Ｓ２． Ｓ３を５１＞３２＞５３に設定すると共に、送
り手段Ｂの送り速度Ｓ４を５４＞Ｓｔに設定して使用す
る。S2. S3 is set to 51>32>53, and the feeding speed S4 of feeding means B is set to 54>St.
このようにすると、先行する金属管ＰＬは送り手段Ａに
より前方へ送られるにつれその進み速度かやシ小さくな
る一方、後続の金属管ｅ２は未だ送り手段Ａの手前側に
於て先行する管ＰＩより速い速度で送られるから、両者
ＰＩ、１１２の当接部は、少なくとも先行する前記管Ｐ
Ｉが送り手段Δから送り出されるまでは当接状態を自動
的に維持できることとなる。In this way, as the preceding metal tube PL is sent forward by the feeding means A, its advancement speed becomes slightly smaller, while the following metal tube e2 is still on the front side of the feeding means A, while the advancing speed of the preceding metal tube PL decreases. Since it is fed at a faster speed, the abutting portion of both PIs 112 is at least as strong as the preceding pipe P.
This means that the contact state can be maintained automatically until I is sent out from the feeding means Δ.
一方、前記先行管ＰＩの後端が加熱冷却手段Ｃを通過す
ると、肢管Ｐ１はその先端側から順次送り手段Ｂｉ；支
持されることとなるが、送り手段Ｂの送り速度はここで
は送り手段Ａの最大速度のローラｌのそれよりも大きく
しであるので、前記管Ｐ１は送り手段Ｂ側に引き込まれ
、この結果、先に送り手段Ａの各日−ラ群の速度差によ
り強制当接させられていた両管Ｐｉ、 Ｐ２の当接部は
強制的に離隔されることとなる。On the other hand, when the rear end of the leading pipe PI passes through the heating and cooling means C, the limb pipe P1 is supported sequentially from the distal end side by the feeding means Bi; Since the maximum speed of roller A is greater than that of roller l, the pipe P1 is drawn into the feeding means B side, and as a result, the pipe P1 is forced into contact with the feeding means A first due to the speed difference between each group of rollers. The abutting portions of the two pipes Pi and P2, which had been kept in contact with each other, are now forcibly separated.
そこで本発明による熱処理では、」１記容管ＰＩ。Therefore, in the heat treatment according to the present invention, "1. container PI.
Ｐ２の当接部の挙動を利用し、熱処理中、両管ＰＩ。Using the behavior of the abutting part of P2, both pipes PI are heated during heat treatment.
Ｐ２の当接部に、金属管Ｐ１又はＰ２の内部に冷却水が
進入するのを防ぐため゛、第２図に示す蓋体状の治具り
を被着して維持させると共に、熱処理が完了すれば政治
Ｊ４Ｄが金属管１）１．Ｐ２の挙動により自動的に取り
外されるようにしたのである。In order to prevent cooling water from entering the inside of the metal pipe P1 or P2, a lid-shaped jig shown in Fig. 2 is attached to the abutting part of P2 and maintained, and the heat treatment is completed. Then politics J4D will become a metal tube 1) 1. It was made to be automatically removed depending on the behavior of P2.
而して、第２図は金属管Ｐ１．．Ｐ２の当接部に治具り
が被着された状態を示す断面を示すもので、２１は両管
ＰＩ、 Ｐ２の端面肉厚に適合する外形に整えたフラン
ジ部、２２．２３は該フランジ部２１の両面に突設した
帽体状り嵌合部で、該部２２．２３は外側に向けて若干
のテーパを付けると共に、フランジ部２１との接合部が
前記管ＰＬ、 Ｐ２の内径に適合する形状に整えて本発
明の治具りの一例に構成しである。Therefore, FIG. 2 shows the metal pipe P1. ．． This is a cross section showing a state in which the jig is attached to the abutting part of P2, where 21 is a flange portion shaped to fit the end wall thickness of both pipes PI and P2, and 22.23 is the flange. A cap-shaped fitting portion protrudes from both sides of the portion 21, and the portions 22 and 23 are slightly tapered outward, and the joint portion with the flange portion 21 is connected to the inner diameter of the pipes PL and P2. It is arranged into a suitable shape and constituted as an example of the jig of the present invention.
尚１図示した治具りはフランジ部２１を有する浅底皿体
の２枚を伏せた状態で向い合せ、重合した該フランジ部
をスポット溶接などで固着して形成したものであるが、
該治具りは、例えば、１枚の円板の両面に管の内面に嵌
合する突起を形成したようなものでもよいこと勿論であ
る。Note that the jig shown in Figure 1 is formed by placing two shallow pans each having a flange portion 21 face down, and then fixing the overlapped flange portions by spot welding or the like.
Of course, the jig may be, for example, one in which protrusions that fit into the inner surface of the tube are formed on both sides of a single disc.
上記治具りは、まず最初の金属管Ｐ１の前後両端に人手
により被着され、肢管ＰＩが送り手段への手前側から加
熱、冷却手段Ｃに向は送り出される。The above-mentioned jig is first manually attached to both the front and rear ends of the first metal tube P1, and the limb pipe PI is fed to the heating and cooling means C from the front side toward the feeding means.
引きつづき後端に治具りを被着した金属管Ｐ２を、その
先端が送り手段Ａに送られる先行管Ｐ１の後端に被着さ
れた冶具りに嵌合するようにして送り込み、以下同様に
して順次管Ｐ３以降の金属管を供給すると、各金属管の
当接部において嵌合挟持される各治具りは、先に述べた
ように、少なくともその当接部が加熱、冷却手段Ｃ部を
通過し終えるまでは当該当接部に強制的に挟持されるか
ら、この部分から冷却水が各金属管の内部に進入するこ
とを防ぐことができるのである。Subsequently, the metal pipe P2 with a jig attached to the rear end is fed in such a way that its tip fits into the jig attached to the rear end of the leading pipe P1 sent to the feeding means A, and so on. When the metal tubes after pipe P3 are sequentially supplied, each jig fitted and held at the abutting portion of each metal tube is heated and cooled by heating and cooling means C at least at the abutting portion, as described above. Since the cooling water is forcibly held by the abutting part until it finishes passing through the metal tube, it is possible to prevent the cooling water from entering the inside of each metal tube from this part.
また、上記治具りは薄肉の板材により形成しその容積を
極力小さくなるようにしであるから、たとえ加熱手段に
誘導加熱を用いても、磁束に悪影響を及ぼすことは殆ん
どなく、従って、金属管を始端から終端まで、内部に冷
却水の進入を招来することなく均質な熱処理をすること
ができるのみならず、この治具りと装置の送り手段の速
度差によって複数の金属管を治具りを介した連結状態で
連続的に熱処理することができる。In addition, since the jig is formed from a thin plate material and its volume is minimized, even if induction heating is used as the heating means, it will hardly have a negative effect on the magnetic flux, and therefore, Not only can metal tubes be heat-treated uniformly from the start to the end without introducing cooling water into the interior, but the difference in speed between this jig and the feeding means of the equipment makes it possible to treat multiple metal tubes. Continuous heat treatment can be performed in a connected state via a joint.
因に、治具りに代え軟鋼のムク材により形成した栓体（
図示せず）を上記治具りと同態様で使用すると、冷却水
の管内部への進入を防ぐことはできるが、加熱手段５が
誘導子の場合には磁束の尖頭効果により金属管の該栓体
被着部、即ち管端部で磁束が集中してこの部の加熱温度
が他の部位より上昇し過加熱状態を招来する。一方、上
記栓体をステンレス鋼又は銅で形成したものは、該栓体
が尖頭部の温度を吸収するため、上記側とは逆に栓体被
着部の温度が低下し、この部の温度が所定温度に上昇し
なかった。Incidentally, instead of a jig, a plug made of solid mild steel material (
If a jig (not shown) is used in the same manner as the above-mentioned jig, it is possible to prevent the cooling water from entering the pipe, but if the heating means 5 is an inductor, the peak effect of the magnetic flux will cause the metal pipe to Magnetic flux concentrates at the part to which the plug is attached, that is, at the end of the tube, and the heating temperature of this part becomes higher than that of other parts, resulting in an overheating state. On the other hand, when the stopper is made of stainless steel or copper, the stopper absorbs the temperature of the pointed head, so the temperature of the part where the stopper is attached decreases, contrary to the above side. The temperature did not rise to the specified temperature.
本発明は以上の通りであって、同王材質、形状の金属管
の多数を熱処理する際、これらを本発明治具を介して連
結しつつ送り手段を有する熱処理装置に供給する一方、
熱処理装置の送り手段は、１本の金属管の全長がその加
熱、冷却手段を通過するまでの区間に於て、その送り速
度を管の進行方向に向けて順次遅くなるように設定して
おくと共に、前記管の後端が前記加熱、冷却手段を通過
した後は最も早い送り速度に設定して、熱処理される金
属管を搬送するようにしたから、各金属管の接合部に被
着された治具は、より遅い速度で先行させられる管の後
端と、より早い速度でこれを進行する続行管の前端の間
に強制的に保持されるので、凡そ管の内部に冷却水の進
入することはなく、しかも該治具は薄い金属板で形成し
であるから、加熱手段が誘導加熱であっても尖頭効果を
招き難いという効果を得ることができる。更に、前記治
具は加熱、冷却手段を通過した後、先行する管が最も早
い速度で作動している送り手段に引き込まれるとき、先
行する管と後行する管の間に隙間が生じるので自重によ
り落下し、従って、これをいちいち入手により取り外す
ことがなく作業の省力化に寄与する。The present invention is as described above, and when heat treating a large number of metal tubes of the same material and shape, while connecting them via the jig of the present invention and supplying them to a heat treatment apparatus having a feeding means,
The feeding means of the heat treatment equipment is set so that the feeding speed gradually decreases in the direction of movement of the tube in the section until the entire length of one metal tube passes through the heating and cooling means. At the same time, after the rear end of the tube passes through the heating and cooling means, the fastest feeding speed is set to convey the metal tube to be heat treated, so that the metal tubes are coated at the joints of each metal tube. The jig is forcibly held between the rear end of the tube, which is advanced at a slower speed, and the front end of the continuation tube, which is advanced at a faster speed. Moreover, since the jig is formed of a thin metal plate, it is possible to obtain the effect that the peak effect is unlikely to occur even if the heating means is induction heating. Furthermore, after the jig passes through the heating and cooling means, when the leading pipe is drawn into the feeding means operating at the fastest speed, a gap is created between the leading pipe and the trailing pipe, so that the jig loses its own weight. Therefore, it does not have to be removed each time it is obtained, contributing to labor saving.
第１図は本発明を実施する熱処理装置の一例の平面図、
第２図は本発明蓋体の一例の使用状態を示す側断面図で
ある。
Ａ・・・送り手段、１，２．３・・ピンチローラ、Ｂ・
・・送り手段、４・・・ローラコンベア、Ｃ・・加熱、
冷却手段、５・・・環状誘心子、６・・冷却水ジケント
、Ｉつ・・冶具、２１・・・フランジ部、２２．２３・
帽体状嵌合部、１）１〜Ｐ３・・・金属管
代理人 小 泉 良 邦FIG. 1 is a plan view of an example of a heat treatment apparatus for implementing the present invention;
FIG. 2 is a side sectional view showing an example of the lid body of the present invention in use. A... Feeding means, 1, 2.3... Pinch roller, B...
... Feeding means, 4... Roller conveyor, C... Heating,
Cooling means, 5... Annular dielectric, 6... Cooling water dielectric, I jig, 21... Flange portion, 22.23.
Cap-shaped fitting part, 1) 1 to P3...metal pipe agent Yoshikuni Koizumi
Claims (1)
軸方向に送るため前記管の長手方向に沿って列設したロ
ーラ等に上る複数群の送り手段と、該送り手段によって
前進させられる金属管をその長手方向に沿って連続的に
加熱し冷却する定置した誘導子などによる加熱冷却手段
とからなる熱処理装置における１前記送り手段を、前記
加熱冷却熱手段がほぼ中間点にあり、且つ、１本の金属
管のほぼ２倍の長さに亘る区間での送り速度を前記管の
進み側に向けて順次小さくなるようにして作動させるこ
・方、前記送り手段に直列状１ｍで前進させられる金ｊ
ぷ管同士の当接部に体、両金属管の端部を閉基するため
金Ｈａ ？Ｊ 薄板材により形成した蓋体状の治具を被
着し該管同士を連結しておくことを特徴とする金属管の
連続熱処理方法。 ２、 金属製の薄板材により、金属管の端面壁に適合す
るフランジ部と、該フランジ部の前後両面にあって管端
内面に遊嵌支持される嵌合部とを形成し、直列した金属
管の刻面する管端面を閉塞するようにしたことを特徴と
する治具。[Scope of Claims] 1. A plurality of groups of feeding means mounted on rollers or the like arranged along the longitudinal direction of the tubes in order to simultaneously feed a plurality of metal tubes arranged in series in the axial direction of the tubes; In a heat treatment apparatus comprising a heating and cooling means such as a stationary inductor that continuously heats and cools a metal tube advanced by the feeding means along its longitudinal direction, the feeding means is approximately The feeding means is operated such that the feeding speed in a section that is located at the midpoint and is approximately twice the length of one metal tube is gradually decreased toward the advancing side of the tube. Gold j is advanced 1 m in series with
Metal is used to close the ends of both metal tubes at the abutting parts of the metal tubes. J. A method for continuous heat treatment of metal tubes, characterized in that the tubes are connected to each other by attaching a lid-shaped jig formed from a thin plate material. 2. A flange portion that fits the end wall of the metal tube, and fitting portions on both the front and rear surfaces of the flange portion that are loosely fitted and supported on the inner surface of the tube end are formed by thin metal plates, and the metal tubes are connected in series. A jig characterized in that it closes the carved end face of a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13785383A JPS6029421A (en) | 1983-07-29 | 1983-07-29 | Method and jig for continuous heat treatment of metallic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13785383A JPS6029421A (en) | 1983-07-29 | 1983-07-29 | Method and jig for continuous heat treatment of metallic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6029421A true JPS6029421A (en) | 1985-02-14 |
Family
ID=15208314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13785383A Pending JPS6029421A (en) | 1983-07-29 | 1983-07-29 | Method and jig for continuous heat treatment of metallic pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029421A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440960A (en) * | 1991-11-06 | 1995-08-15 | Amada Company, Limited | Sawdust removing device in sawing machine |
| WO2013133042A1 (en) | 2012-03-09 | 2013-09-12 | 新日鐵住金株式会社 | Metal pipe manufacturing method and manufacturing equipment |
| JP2015094029A (en) * | 2013-11-14 | 2015-05-18 | 高周波熱錬株式会社 | Heat treatment jig and method of heat-treating pipe material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311109A (en) * | 1976-07-19 | 1978-02-01 | Kobe Steel Ltd | Fitting part separating method in heat treating process of cylindrical parts |
-
1983
- 1983-07-29 JP JP13785383A patent/JPS6029421A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311109A (en) * | 1976-07-19 | 1978-02-01 | Kobe Steel Ltd | Fitting part separating method in heat treating process of cylindrical parts |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440960A (en) * | 1991-11-06 | 1995-08-15 | Amada Company, Limited | Sawdust removing device in sawing machine |
| WO2013133042A1 (en) | 2012-03-09 | 2013-09-12 | 新日鐵住金株式会社 | Metal pipe manufacturing method and manufacturing equipment |
| US9938602B2 (en) | 2012-03-09 | 2018-04-10 | Nippon Steel & Sumitomo Metal Corporation | Production method and production facility of metal pipe |
| JP2015094029A (en) * | 2013-11-14 | 2015-05-18 | 高周波熱錬株式会社 | Heat treatment jig and method of heat-treating pipe material |
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