JPS62192263A - Manufacture of structure joined by welding cylindrical bodies of different wall thickness for receiving uneven heat - Google Patents
Manufacture of structure joined by welding cylindrical bodies of different wall thickness for receiving uneven heatInfo
- Publication number
- JPS62192263A JPS62192263A JP3338586A JP3338586A JPS62192263A JP S62192263 A JPS62192263 A JP S62192263A JP 3338586 A JP3338586 A JP 3338586A JP 3338586 A JP3338586 A JP 3338586A JP S62192263 A JPS62192263 A JP S62192263A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- welding
- tip
- walled cylindrical
- thick
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000005304 joining Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 7
- 210000004894 snout Anatomy 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000035882 stress Effects 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 101100313164 Caenorhabditis elegans sea-1 gene Proteins 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 241000143973 Libytheinae Species 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は偏熱を受ける肉厚の異なる筒状体の溶接により
接合した構造体を製造する方法に関し、さらに詳しくは
、例えば、表面処理工場のダウンシュート、スナウト等
のように溶融亜鉛めっき浴中に浸漬されて偏熱を受ける
肉厚の異なる筒状体を溶接により接合した構造体を製造
する方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for manufacturing a structure in which cylindrical bodies having different wall thicknesses are joined by welding and subjected to uneven heat. The present invention relates to a method for manufacturing a structure in which cylindrical bodies having different wall thicknesses, such as down chutes and snouts, which are immersed in a hot-dip galvanizing bath and subjected to uneven heat, are joined together by welding.
［従来技術１
肉厚の着しく異なる筒状体を溶接により接合した構造体
を製造する従来の方法は、第６図に示すように厚肉筒状
体１の先端部に薄肉筒状体２が差し込まれるようなイン
ロウ部が設けられ、このインロウ部に薄肉筒状体２が差
し込まれ、薄肉筒状体２の厚肉筒状体１の間に形成され
たギャップを外面から隅肉溶接により接合３して構造体
を製造していた。[Prior Art 1] A conventional method for manufacturing a structure in which cylindrical bodies having different wall thicknesses are joined by welding is as shown in FIG. The thin-walled cylindrical body 2 is inserted into this spigot part, and the gap formed between the thick-walled cylindrical body 1 of the thin-walled cylindrical body 2 is filled from the outside by fillet welding. The structure was manufactured by bonding 3.
しかし、このような構造体における継手部構造であると
、スナウトを溶融亜鉛めっき槽に浸漬して長期間使用す
ると、厚肉筒状体１と薄肉筒状体２との間の接合３部の
隅肉溶接部に割れが生じる。However, with the joint structure of such a structure, if the snout is immersed in a hot-dip galvanizing bath and used for a long period of time, the joint 3 between the thick-walled cylindrical body 1 and the thin-walled cylindrical body 2 will be damaged. Cracks occur in fillet welds.
この割れは溶融亜鉛めっき槽に浸漬した時の厚肉筒状体
１と薄肉筒状体２とは肉厚の相違による偏熱を受け、厚
肉筒状体１と薄肉筒状体２との熱膨張の差により接合３
部の隅肉溶接ビード内面側の切欠状未溶融ルート部に引
張応力が生じるためである。This cracking occurs when the thick-walled cylindrical body 1 and the thin-walled cylindrical body 2 receive uneven heat due to the difference in wall thickness when immersed in the hot-dip galvanizing bath. Bonding due to difference in thermal expansion 3
This is because tensile stress is generated in the notch-shaped unfused root portion on the inner surface side of the fillet weld bead.
従って、スナウトのか命が非常に短かく、また、このス
ナ゛クトはその内面に中を通過する鋼材の酸化防止のた
めに雰囲気ガス（ＨＮｘｆｆス）を吹込んで大気とのシ
ールを行なっているが、上記接合３部に割れが生しると
シール不良となる。Therefore, the lifespan of the snout is very short, and the snout is sealed from the atmosphere by injecting atmospheric gas (HNxff gas) into its inner surface to prevent oxidation of the steel material passing through it. If cracks occur in the three joints, the seal will be defective.
また、厚肉筒状体１と薄肉筒状体２とは外面からの隅肉
溶接だけであるので、）−記したような偏熱を受けると
、（１）接合部に割れが生し、（２）寿命がう（ｊかく
、修理を頻繁に行なうため保全コストが高くなり、また
、（３）表面処理工場におけるスナウトは割れか′生し
ることによりシール不良となり、鋼材が酸化して品質が
不良となり、さらに、雰囲気ガス（ＨＮ ｘガス）と空
気中の酸素か結合して爆発事故につながる等の問題があ
る。In addition, since the thick-walled cylindrical body 1 and the thin-walled cylindrical body 2 are only fillet welded from the outer surface, if they are subjected to uneven heat as described above, (1) cracks will occur at the joint, (2) The service life is extended (thus, maintenance costs are increased due to frequent repairs), and (3) the snout in the surface treatment factory cracks, resulting in poor sealing and oxidation of the steel. In addition, there are problems such as poor quality and the combination of atmospheric gas (HNx gas) and oxygen in the air, leading to an explosion.
［発明が解決しようとする問題点１
本発明は上記に説明したように、従来における厚肉筒状
体と薄肉筒状体との溶接により接合した構造体か偏熱を
受けることにより、接合部に割れが生じるという問題に
鑑み、本発明者が鋭意研究を行なった結果、このような
厚肉筒状体と薄肉筒状体との溶接により接合した構造体
の接合部に生じる割れを防止するには、引張応力が発生
する厚肉筒状体と薄肉筒状体の溶接により接合した構造
体の接合部内面側に切欠状未溶融ルート部を生じさせな
いことが重要であることを知見し、偏熱を受ける肉厚の
異なる筒状体を溶接により接合した構造体を製造する方
法を開発したのである。[Problem to be Solved by the Invention 1] As explained above, the present invention provides a structure in which a conventional thick-walled cylindrical body and a thin-walled cylindrical body are joined by welding. In view of the problem that cracks occur in the structure, the present inventor conducted intensive research and found that it is possible to prevent cracks occurring at the joint of a structure in which a thick-walled cylindrical body and a thin-walled cylindrical body are joined by welding. We have discovered that it is important to prevent the formation of cut-out unfused root parts on the inner surface of the joint of a structure in which a thick-walled cylindrical body and a thin-walled cylindrical body are joined by welding, where tensile stress is generated. They developed a method for manufacturing a structure in which cylindrical bodies with different wall thicknesses, which are subject to uneven heat, are joined together by welding.
［問題点を解決するための手段１
本発明に係る偏熱を受ける肉厚の異なる筒状体を溶接に
より接合した構造体を製造する方法の特徴とするところ
は、肉厚の著しく異なる筒状体を溶接により接合するに
際し、厚肉筒状体の接合部先端に勾配またはテーパーを
設けて薄肉筒状体の接合部先端と肉厚を略同一として当
接し、さらに、厚肉筒状体の接合部先端と薄肉筒状体接
合部先端の全周に小ルートフェースの外面開先を設け、
裏波溶接により接合することにある。[Means for Solving the Problems 1] The method of manufacturing a structure in which cylindrical bodies having different wall thicknesses which are subjected to uneven heat are joined by welding according to the present invention is characterized in that cylindrical bodies having significantly different wall thicknesses are When joining the bodies by welding, the tip of the joint of the thick-walled cylindrical body is provided with a slope or taper, and the thickness is approximately the same as that of the thin-walled cylindrical body. A small root face outer bevel is provided around the entire circumference of the joint tip and the thin-walled cylindrical body joint tip.
The purpose is to join using Uranami welding.
−４＝
本発明に係る偏熱な受ける肉厚の異なる筒状体を溶接に
より接合した構造体の製造方法（以下、Ｉｉｉに本発明
に係る製造方法ということがある。）について以下詳細
に説明する。-4= The method for manufacturing a structure in which cylindrical bodies with different wall thicknesses that experience uneven heat are joined by welding according to the present invention (hereinafter, III may be referred to as the manufacturing method according to the present invention) will be explained in detail below. do.
本発明に係る製造方法を図面により説明する。The manufacturing method according to the present invention will be explained with reference to the drawings.
即ち、第１図、第２図、第３図において、厚肉筒状体１
の接合部先端の外周全面に勾配またはテーパー５を設け
て厚肉筒状体１の接合部３先端の肉厚を、薄肉筒状体２
の接合部３先端の肉厚と略同一として当接し、このよう
に当接された厚肉筒状体１と薄肉筒状体２の接合部３先
端の全周に小ルートフェースの外面開先を設けてから、
裏波溶接を行なって一体化する。That is, in FIGS. 1, 2, and 3, the thick-walled cylindrical body 1
A slope or taper 5 is provided on the entire outer periphery of the tip of the joint 3 of the thick-walled cylindrical body 1 to reduce the thickness of the tip of the joint 3 of the thick-walled cylindrical body 2.
The thick-walled cylindrical body 1 and the thin-walled cylindrical body 2 are brought into contact with each other so that the wall thickness is approximately the same as that of the tip of the joint 3, and an outer surface bevel of a small root face is formed on the entire circumference of the tip of the joint 3 between the thick-walled cylindrical body 1 and the thin-walled cylindrical body 2 that are abutted in this way. After setting up
Perform Uranami welding to integrate.
このように、厚肉筒状体１の接合部３先端と薄肉筒状体
２の接合部３先端との肉厚を略同一にするために、図に
示すように、厚肉筒状体１の接合部３先端に勾配または
テーパー５を設けるのは、突合せ溶接後、厚肉筒状体１
の溶接止端部への応力集中を避けるためであり、また、
小ルート７エー又の外面開先３を裏波溶接を行なうのは
、引張応力か“生じる裏波溶接部内面側に未溶融ルート
部を生じさせないためである。In this way, in order to make the thickness of the tip of the joint 3 of the thick-walled cylindrical body 1 and the tip of the joint 3 of the thin-walled cylindrical body 2 substantially the same, as shown in the figure, the thick-walled cylindrical body 1 is The slope or taper 5 is provided at the tip of the joint 3 of the thick-walled cylindrical body 1 after butt welding.
This is to avoid stress concentration on the weld toe, and
The reason why the outer surface groove 3 of the small root 7A is welded is to prevent the formation of an unmelted root portion on the inner surface of the uranami weld where tensile stress is generated.
さらに、厚肉筒状体１の接合部３先端に設ける勾配は１
／２〜１１５およびテーパーは１／１〜１／２．５とす
るのがよく、勾配が１／２を越え、また、テーパーが１
／１を越えると傾斜が急になり、厚肉筒状体１側溶接ビ
ード止端部のビード立上り角度が大きくなり耐割れ性が
低下し、また、勾配が１１５未満およびテーパーが１／
２．５未満では顕著な耐割れ効果が得られないわりに加
工費が」１昇するのである。Furthermore, the slope provided at the tip of the joint 3 of the thick-walled cylindrical body 1 is 1
/2 to 115 and the taper is preferably 1/1 to 1/2.5, and the slope is more than 1/2 and the taper is 1/2.
If the slope exceeds /1, the slope becomes steep, the bead rising angle at the weld bead toe on the thick-walled cylindrical body 1 side becomes large, and the cracking resistance decreases.
If it is less than 2.5, no significant cracking resistance effect will be obtained, but the processing cost will increase by 1.
しかして、引張応力が作用する厚肉筒状体１と薄肉筒状
体２との接合部３内面側は、裏波溶接により完全滲込み
溶接を実施するため、切欠状の未溶融ルート部が生じる
ことがないので、耐割れ性が飛躍的に向上する。Since the inner surface of the joint 3 between the thick-walled cylindrical body 1 and the thin-walled cylindrical body 2, where tensile stress is applied, is completely penetrated by uranami welding, a notched unmelted root portion is formed. Since this does not occur, cracking resistance is dramatically improved.
従って、本発明に係る偏熱を受ける肉厚の異なる筒状体
を溶接により接合した構造体を製造する方法では、構造
体を構成する厚肉筒状体と薄肉筒状体が温度差による偏
熱を受けても長期の繰返し使用に耐え、亀裂発生等は一
切生じない。Therefore, in the method of manufacturing a structure in which cylindrical bodies with different wall thicknesses that are subjected to uneven heat are joined by welding according to the present invention, the thick-walled cylindrical body and the thin-walled cylindrical body that constitute the structure are unevenly heated due to the temperature difference. Even when exposed to heat, it can withstand repeated use over a long period of time without any cracking.
即ち、構造体の厚肉筒状体或いは薄肉筒状体の何れかが
高温ガス雰囲気にさらされたり、また、高温槽内に浸漬
されているような偏熱条件下では、該条件変化境界近傍
にサーマスストレスの緩衝帯を配設させることが最適で
あり、例えば、ベローズのような伸縮接手を設けること
も有効であるが、筒状体内外の温度差が大きい時は別と
して、筒状体長手方向の任意の所でＷＬい温度条件が変
化する際には、筒状体の肉厚に著しい差をっけ、接合部
を設け、厚肉筒状体接合部先端に１／２〜１１５の勾配
または１／１〜１／２．５のテーパーを設けて、厚肉筒
状体の接合部３先端と薄肉筒状体接合部３先端の肉厚を
略同一とし、そして、この両者を完全溶造み裏波溶接を
行なって一体的に接合するのである。That is, under uneven heat conditions such as when either the thick-walled cylindrical body or the thin-walled cylindrical body of the structure is exposed to a high-temperature gas atmosphere, or is immersed in a high-temperature tank, the temperature near the boundary of the condition change It is optimal to provide a thermal stress buffer zone in the cylindrical body. For example, it is also effective to provide an expansion joint such as a bellows. When the WL temperature conditions change at any point in the hand direction, make a significant difference in the wall thickness of the cylindrical body, provide a joint, and add 1/2 to 115 mm at the tip of the joint of the thick-walled cylindrical body. or a taper of 1/1 to 1/2.5 to make the wall thicknesses at the tip of the joint 3 of the thick-walled cylindrical body and the tip of the joint 3 of the thin-walled cylindrical body approximately the same, and then They are joined together using complete welding and Uranami welding.
なお、本発明に係る製造方法において、厚肉および薄肉
の筒状体は、断面が角形、円形または隋円形でも適用が
可能である。In addition, in the manufacturing method according to the present invention, the thick-walled and thin-walled cylindrical bodies can be applied even if their cross sections are square, circular, or circular.
［実施例］
本発明に係る偏熱を受ける肉厚の異なる筒状体を溶接に
より接合した構造体を製造する方法について実施例を説
明する。[Example] An example will be described about a method of manufacturing a structure in which cylindrical bodies having different wall thicknesses that are subjected to uneven heat are joined by welding according to the present invention.
実施例
表面処理工場におけるダウンシュートとスナウトとより
なる構造体の製造方法について第４図および第５図によ
り説明する。EXAMPLE A method of manufacturing a structure consisting of a down chute and a snout in a surface treatment factory will be explained with reference to FIGS. 4 and 5.
この構造体の断面形状は、内面側に冷間圧延鋼板８か通
過するため長方形であり、厚肉筒状体の材質５Ｕ３０９
、肉厚５０ｍ＋ｎのスナウト７が溶融亜鉛９（４００〜
４５０℃）に浸漬しており、薄肉筒状体のダウンシュー
ト６は材質ＳＯ３３０４、肉厚１０ｍｍで、厚肉筒状体
の又ナウト７は薄肉筒状体のダウンシュート６の肉厚の
５倍である。The cross-sectional shape of this structure is rectangular because the cold-rolled steel plate 8 passes through the inner surface, and the material of the thick-walled cylindrical body is 5U309.
, the snout 7 with a wall thickness of 50m+n is made of molten zinc 9 (400~
The thin-walled cylindrical down chute 6 is made of SO3304 and has a wall thickness of 10 mm, and the thick-walled cylindrical down chute 7 is 5 times as thick as the thin-walled cylindrical down chute 6. It is.
この２つの厚肉筒状体と薄肉筒状体を溶接により接合し
た構造体を製造する方法は、
（１）厚肉筒状体のスナウト７の接合部先端外周に機械
加工により】／３の勾配を設ける。そして、厚肉筒状体
のスナウトの接合部３と薄肉筒状体のダウンシュート接
合部３との肉厚を略同一にする。The method for manufacturing a structure in which these two thick-walled cylindrical bodies and thin-walled cylindrical bodies are joined by welding is as follows: Provide a slope. The wall thicknesses of the snout joint 3 of the thick-walled cylindrical body and the down shoot joint 3 of the thin-walled cylindrical body are made approximately the same.
−７＝
（２）薄肉筒状体のダウンシュート６と厚肉筒状体のス
ナウト７とを当接し、その両方に小ルートフェースの外
面開先加工を行なう。-7= (2) The down chute 6 of the thin-walled cylindrical body and the snout 7 of the thick-walled cylindrical body are brought into contact, and a small root face is beveled on the outer surface of both.
開先形状は、ルート間隔２ｍｍ、開先深さ８■、開先角
度８０°の■開先とする。なお、Ｕ開先でもよい。第５
図参照。The groove shape is a ■ groove with a root interval of 2 mm, a groove depth of 8 ■, and a groove angle of 80°. Note that a U-bevel may be used. Fifth
See diagram.
（３）この開先を５ＵＳ３０９系溶接材料を用い、ＴＩ
Ｇ溶接により初層を裏波溶接する。２層目以降も同じ材
料でＴＩＧ溶接を行なう。なお、３層目以降は被覆アー
ク溶接やＭＩＧ溶接を行なってもよい。(3) Using 5US309 series welding material, this groove was
The first layer is welded using G welding. TIG welding is performed using the same material for the second and subsequent layers. Note that shielded arc welding or MIG welding may be performed for the third and subsequent layers.
（４）溶接終了後、溶接ビード止端部をグラインダーで
手入れをして滑らかに仕上げる。(4) After welding is complete, use a grinder to clean the toe of the weld bead to give it a smooth finish.
このようにして製造された厚肉筒状体のスナウトと薄肉
筒状体のダウンシュートとを溶接接合した構造体は、亀
裂の発生は皆無となり、この構造体を表面処理に使用す
ると製品品質が向上し、不良品が撲滅され、がっ、保全
コストは少なくなるという効果がある。The structure manufactured in this way, in which the snout of the thick-walled cylindrical body and the down shoot of the thin-walled cylindrical body are welded together, has no cracking, and when this structure is used for surface treatment, the product quality is improved. This has the effect of improving product quality, eliminating defective products, and reducing maintenance costs.
なお、厚肉筒状体の接合部先端に設ける勾配またはテー
パーは外側だけではなく、第１図に示すように内面側の
両方に設けることもできる。また、第２図に示すように
勾配またはテーパーの終端線が溶融亜鉛の液面レベルと
平行になるようにしてもよく、第３図に示すように接合
３部が溶融亜鉛の液面レベルと平行になるようにしても
よい。Incidentally, the slope or taper provided at the tip of the joint of the thick-walled cylindrical body can be provided not only on the outside but also on both the inside sides as shown in FIG. Alternatively, the end line of the slope or taper may be parallel to the liquid level of the molten zinc as shown in Figure 2, and the 3rd part of the joint may be parallel to the liquid level of the molten zinc as shown in Figure 3. They may be parallel.
また、材質は軟鋼とステンレス鋼のように異なった材質
としてもよく、鋳鋼材とすることもでき、さらに、使用
材質にＴｉ５Ｎｂ等の特殊金属を含有させて高温酸化を
防止したり、水冷却を併用することも有効である。In addition, the material may be different materials such as mild steel and stainless steel, or cast steel may be used.Furthermore, the material used may contain special metals such as Ti5Nb to prevent high temperature oxidation, or may be water cooled. It is also effective to use them together.
［発明の効果］
以上説明したように、本発明に係る偏熱な受ける肉厚の
異なる筒状体を溶接により接合した構造体の製造方法は
上記の構成であるので、製造された構造体は耐割れ性が
向上し、使用期間の寿命を長くすることができ、表面処
理工場において、雰る爆発事故がなくなり、さらに、保
全コストの低減がはかれるという効果を有するものであ
る。[Effects of the Invention] As explained above, since the method of manufacturing a structure in which cylindrical bodies having different wall thicknesses which are subjected to uneven heat are joined by welding according to the present invention has the above configuration, the manufactured structure This has the effect of improving cracking resistance, extending the service life, eliminating explosion accidents in surface treatment factories, and reducing maintenance costs.
・１９図面のｌ’）ｉ’ｉ単な説明
第１図、第２図、第３図は本発明に係る偏熱を受ける肉
厚の異なる筒状体を溶接により接合した構造体の製造方
法により製造された構造体の概略図であり、第４図、第
５図は同じ〈実施例を説明するための概略図、第６図は
従来法を説明するための図である。・19 Drawing l') i'i Simple explanation Figures 1, 2, and 3 show the method for manufacturing a structure in which cylindrical bodies with different wall thicknesses that are subjected to uneven heat are joined by welding according to the present invention. FIG. 4 and FIG. 5 are schematic diagrams for explaining the same embodiment, and FIG. 6 is a diagram for explaining the conventional method.
１・・厚肉筒状体、２・・薄肉筒状体、３・・接合、４
．９・・溶融亜鉛、５・・勾配またはテーパー、６・・
ダウンシュート、７・・スナウト、８・・鋼板、１０・
・雰囲気ガス吹込口。1. Thick walled cylindrical body, 2. Thin walled cylindrical body, 3. Joining, 4
．． 9...molten zinc, 5...gradient or taper, 6...
Down shoot, 7...snout, 8...steel plate, 10...
・Atmosphere gas inlet.
シー１ニー□ 第２図Sea 1 Knee□ Figure 2
Claims (1)
し、厚肉筒状体の接合部先端に勾配またはテーパーを設
けて薄肉筒状体の接合部先端の肉厚と略同一として当接
し、さらに、厚肉筒状体の接合部先端と薄肉筒状体の接
合部先端の全周に小ルートフェースの外面開先を設け、
裏波溶接により接合することを特徴とする偏熱を受ける
肉厚の異なる筒状体を溶接により接合した構造体を製造
する方法When joining cylindrical bodies with different wall thicknesses by welding, a slope or a taper is provided at the tip of the joint of the thick-walled cylindrical body, and the abutment is made so that the thickness is approximately the same as that of the tip of the joint of the thin-walled cylindrical body, Furthermore, a small root face outer bevel is provided around the entire circumference of the joint tip of the thick-walled cylindrical body and the joint tip of the thin-walled cylindrical body,
A method for manufacturing a structure in which cylindrical bodies with different wall thicknesses that are subjected to uneven heat are joined by welding, characterized by joining by uranami welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3338586A JPS62192263A (en) | 1986-02-18 | 1986-02-18 | Manufacture of structure joined by welding cylindrical bodies of different wall thickness for receiving uneven heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3338586A JPS62192263A (en) | 1986-02-18 | 1986-02-18 | Manufacture of structure joined by welding cylindrical bodies of different wall thickness for receiving uneven heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192263A true JPS62192263A (en) | 1987-08-22 |
Family
ID=12385127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3338586A Pending JPS62192263A (en) | 1986-02-18 | 1986-02-18 | Manufacture of structure joined by welding cylindrical bodies of different wall thickness for receiving uneven heat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1918057A1 (en) * | 2006-11-04 | 2008-05-07 | ContiTech Kühner GmbH & Cie. KG | Welded pipe connection |
-
1986
- 1986-02-18 JP JP3338586A patent/JPS62192263A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1918057A1 (en) * | 2006-11-04 | 2008-05-07 | ContiTech Kühner GmbH & Cie. KG | Welded pipe connection |
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