JPH06234029A - Method of producing weld seamless liquefied gas container and said weld seamless container - Google Patents
Method of producing weld seamless liquefied gas container and said weld seamless containerInfo
- Publication number
- JPH06234029A JPH06234029A JP5148367A JP14836793A JPH06234029A JP H06234029 A JPH06234029 A JP H06234029A JP 5148367 A JP5148367 A JP 5148367A JP 14836793 A JP14836793 A JP 14836793A JP H06234029 A JPH06234029 A JP H06234029A
- Authority
- JP
- Japan
- Prior art keywords
- container
- cylindrical body
- liquefied gas
- gas container
- die
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 32
- 238000003466 welding Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 230000001012 protector Effects 0.000 description 5
- 238000003483 aging Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 208000014674 injury Diseases 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
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、溶接による継目を有
しない一体型の中空容器である液化ガス容器をアルミニ
ウム合金材で形成することができるようにした溶接継目
のない液化ガス容器の製造方法及び溶接継目のない液化
ガス容器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a welded seamless liquefied gas container in which a liquefied gas container, which is an integrated hollow container having no welded joint, can be formed of an aluminum alloy material. And a liquefied gas container without welding seams.
【０００２】[0002]
【従来の技術】一般的に、液化石油ガス（プロパン，ブ
タン等）等のガスの収容のための耐圧容器は、数片の鋼
材を溶接して作られることが一般である。このような鋼
材容器は、円筒体の容器の胴体部の長さの方向に一箇
所、また円周方向には容器の大きさに応じて一箇所ない
し二箇所の溶接継目が形成されることになっている。2. Description of the Related Art Generally, a pressure container for containing a gas such as liquefied petroleum gas (propane, butane, etc.) is generally made by welding several pieces of steel. In such a steel material container, one welded seam is formed in the longitudinal direction of the body portion of the cylindrical container, and one or two welded seams are formed in the circumferential direction depending on the size of the container. Has become.
【０００３】一方、容器に対してバルブを結合するため
に設けられるネックリングは、容器の上段に設けられた
通孔に挿入した後、この結合部の外周面を溶接すること
により、容器と一体となるような構造となっている。On the other hand, a neck ring provided for connecting a valve to a container is integrated with the container by inserting it into a through hole provided in the upper stage of the container and then welding the outer peripheral surface of this connecting portion. The structure is such that
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ように鋼材を溶接して形成した容器は、溶接による継目
の周囲が他の部分に比べ腐食し易くなるので、この部分
からガスが漏出することがあり得、これがため爆発事故
を招き、人身事故を来す等のおそれがあった。特に、容
器にガスを注入したりバルブを開閉する際に、ネックリ
ングに過度な力を加えるとネックリングと容器との接合
部に亀裂を生じてガス漏出の直接的な原因の一つとなる
こともあった。However, in the container formed by welding the steel materials as described above, since the periphery of the joint by welding is more likely to be corroded than other portions, gas leaks from this portion. There was a risk of causing an explosion and personal injury. Especially, when injecting gas into the container or opening / closing the valve, if excessive force is applied to the neck ring, it may cause cracks at the joint between the neck ring and the container, which is one of the direct causes of gas leakage. There was also.
【０００５】また、容器が鋼材により形成されているの
で、その重量も大となるので、その取扱において不便な
ことは勿論、取扱い時に溶接継目に加えられる衝撃によ
り、容器の使用寿命が短くなる等、種々の課題を有して
いた。Further, since the container is made of steel material, the weight thereof is large, which is inconvenient in handling, and the service life of the container is shortened due to the impact applied to the welding seam during handling. , Had various problems.
【０００６】[0006]
【課題を解決するための手段】そこでこの発明に係る溶
接継目のない液化ガス容器の製造方法及び溶接継目のな
い液化ガス容器は前記の課題を解決するために、アルミ
ニウム合金材の板材を円筒形のダイス上に載せた後、ポ
ンチでプレスして深絞り加工して、有底状の円筒体を形
成する１次プレス工程と、前記１次プレス工程で得られ
た円筒体を、前記ダイスの直径より小さいダイスに被せ
た後、再び適正規格のポンチにてプレスして深絞り加工
し、前記円筒体に比べ細長い有底状の円筒体を得る２次
プレス工程と、前記工程により作った円筒体を適正規格
の直径の容器に引き抜き成形する工程と、引き抜き成形
された容器の開口部を加工に適合な温度に加熱し、その
外周面に駆動ローラーを密着させて容器の開口部の直径
を縮小させるネッキング工程と、このネッキング加工か
ら得られた容器のネック部分にバルブを螺着するための
螺子部を形成する工程とからなり、その目的は容器重量
の軽量化を図り、また安全度を高めることができるよう
にしたものである。In order to solve the above-mentioned problems, a method for manufacturing a liquefied gas container without welding seams and a liquefied gas container without welding seams according to the present invention are provided in order to solve the above problems. After being placed on the die, a primary pressing step of forming a bottomed cylindrical body by pressing with a punch and deep drawing, and the cylindrical body obtained in the primary pressing step are After covering with a die smaller than the diameter, pressing again with a punch of proper standard and deep-drawing to obtain a cylindrical body with a bottom that is elongated compared to the cylindrical body, a secondary pressing step, and a cylinder made by the above step The process of drawing the body into a container of a proper standard diameter, and heating the opening of the pultruded container to a temperature suitable for processing, and contact the drive roller on the outer peripheral surface to adjust the diameter of the container opening. Net to shrink And the process of forming a screw part for screwing the valve to the neck part of the container obtained by this necking process, the purpose of which is to reduce the weight of the container and to increase safety. It was made possible.
【０００７】また、この発明の他の目的は、アルミニウ
ムにて成形された液化ガス容器を提供することにより、
達成できる。Another object of the present invention is to provide a liquefied gas container molded of aluminum,
Can be achieved.
【０００８】[0008]
【作用】一般的にアルミニウム合金は、スラグ等の不純
物の混入のため製品の成形時に亀裂が発生しやすいの
で、この発明においては、不純物の混入のない高品位の
アルミニウム合金板の製造がその基礎となる。したがっ
て、アルミニウム合金スラブを連続鋳造した後、公知の
方法により表面の切削作業を必要とする。In general, aluminum alloys are prone to cracks during the molding of products due to the inclusion of impurities such as slag. Therefore, in the present invention, the production of high-quality aluminum alloy sheets free of impurities is the basis. Becomes Therefore, after continuously casting the aluminum alloy slab, a surface cutting operation is required by a known method.
【０００９】その後、適正な厚さに形成したアルミニウ
ム合金板を円形若しくは多角形にパンチング・切断した
後、適正な温度で焼鈍しすると加工性がよくなる。Thereafter, the aluminum alloy plate formed to have an appropriate thickness is punched and cut into a circular or polygonal shape, and then annealed at an appropriate temperature to improve workability.
【００１０】上記焼鈍し作業により、軟化された板材に
潤滑油を塗布してから、この板材を円筒形のダイス上に
載せた状態で、ポンチによりプレスすることにより有底
状の円筒体を形成し、その後、この円筒体を上記ダイス
より直径の小さいダイスの上に被せ、再びプレスし、第
一段階の製品を成形する。Lubricating oil is applied to the softened plate material by the above-mentioned annealing work, and then the plate material is placed on a cylindrical die and pressed by a punch to form a bottomed cylindrical body. Then, this cylindrical body is put on a die having a diameter smaller than that of the die and pressed again to form the first stage product.
【００１１】続いて、これを所定の工業規格に合致する
規格に引き抜く。Subsequently, this is pulled out to a standard that conforms to a predetermined industrial standard.
【００１２】次に、容器の開口部を縮めるネッキング作
業をすることになるが、このネッキング作業とは、容器
を高速回転させながら押出し加工温度（４５０℃〜４７
０℃）で容器に加熱した後、容器の外周面に密着される
駆動ローラーを内向きに徐々に移動させながらネックを
作ることをいう。この時、直径の縮小されたネック部分
の組織に皺がよらないように成形することが重要であ
る。Next, a necking operation for contracting the opening of the container is performed. This necking operation is the extrusion processing temperature (450 ° C. to 47 ° C.) while rotating the container at a high speed.
After heating the container at 0 ° C.), the neck is formed by gradually moving the driving roller closely attached to the outer peripheral surface of the container inward. At this time, it is important to form the neck portion having a reduced diameter so that the structure of the neck portion does not have wrinkles.
【００１３】このようなネッキング作業により、比較的
厚く作られたネックの内周面に螺子部を形成すると、ネ
ックリングと同一の役割をするようになる。ただし、バ
ルブ結合時に、アルミニウムが他の金属と接触すること
により発生する腐食を防止するためには接着剤を塗らな
ければならないし、また絶縁テープにてバルブを包んで
から、螺子結合しなければならない。When the screw portion is formed on the inner peripheral surface of the neck made relatively thick by such necking work, it plays the same role as the neck ring. However, an adhesive must be applied to prevent corrosion caused by aluminum coming into contact with other metals when connecting the valve, and the valve must be wrapped with insulating tape before screw connection. I won't.
【００１４】従って、ネック部分を必要とする長さだけ
切断し、螺子部を形成した後、容器の上・下部にプロテ
クターとスカートを表面溶接して取り付けることにより
その形態が作られ、時効硬化（約８時間程度放置）後、
また熱処理することにより、必要とする強い材質の製品
を得る。Therefore, after the neck portion is cut by a required length to form a screw portion, the protector and the skirt are surface-welded and attached to the upper and lower portions of the container to form the shape, and the age hardening ( After leaving it for about 8 hours)
Further, by heat treatment, a product having a required strong material is obtained.
【００１５】そして、本発明の前記の手段により、溶接
継目のない液化ガス容器が得られ、またその容器は従来
の鋼材の容器に遜色ない耐圧性、気密性及び耐破裂性を
もつことになる。By the above-mentioned means of the present invention, a liquefied gas container having no welding seam can be obtained, and the container has pressure resistance, airtightness and burst resistance comparable to those of conventional steel containers. .
【００１６】[0016]
【実施例】以下、この発明に係る溶接継目のない液化ガ
ス容器の製造方法及び溶接継目のない液化ガス容器の一
実施例を図面に基づいて説明するが、そのうち図１乃至
図７は、この発明に用いるアルミニウム合金製板材１を
製造する工程、すなわちこの発明に関する準備工程の説
明図であり、公知のものであるが、この発明の基礎又は
前提になるものであるので簡略に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for producing a liquefied gas container without welding and a liquefied gas container without welding according to the present invention will be described below with reference to the drawings. It is explanatory drawing of the process of manufacturing the aluminum alloy board | plate material 1 used for invention, ie, the preparatory process regarding this invention, It is a well-known thing, but since it is the foundation or premise of this invention, it demonstrates simply.
【００１７】鋼材の溶接により作られた液化石油ガス容
器に関する韓国工業規格（ＫＳ−Ｂ６２１１ １９９
１）によると、耐圧性、気密性及び耐破裂性実験におい
て、３１kg f/cm2の圧力に耐えなければならないと定め
られているので、本発明に係るアルミニウム合金製容器
も、その材質として少なくとも同規格のＡ６０６１板材
を使用することが望ましく、溶体化処理と時効硬化後、
再び熱処理をしなければならない。さらに望ましくは、
Ａ６０６１板材より強いＡ２０１４、Ａ２０２４、Ａ７
０７５板材を使用することである。これらの板材は時効
硬化及び熱処理だけで十分な強度を得ることができる
が、Ａ６０６１板材の場合のように熱処理すると一層強
い材質の板材が得られる。Korean Industrial Standard (KS-B6211 199) on liquefied petroleum gas containers made by welding steel materials
According to 1), in the pressure resistance, airtightness and burst resistance tests, it is determined that the container must withstand a pressure of 31 kg f / cm 2 , so that the aluminum alloy container according to the present invention is at least as a material. It is desirable to use the A6061 plate material of the same standard, after solution treatment and age hardening,
Must be heat treated again. More preferably,
Stronger than A6061 plate material A2014, A2024, A7
075 plate material is used. These plate materials can obtain sufficient strength only by age hardening and heat treatment, but a stronger material plate can be obtained by heat treatment as in the case of the A6061 plate material.
【００１８】図１は、上記合金を連続鋳造法で鋳造する
ことを示すものであり、このときスラグ等の不純物の混
入を防止しなければならない。FIG. 1 shows that the above alloy is cast by a continuous casting method. At this time, it is necessary to prevent impurities such as slag from entering.
【００１９】図２は連続鋳造したスラブＳの斜視図であ
り、図３はこのスラブＳの表面に形成された不純物を切
削・除去する作業を示し、図４は、スラブＳを圧延機Ｍ
で圧延しつつローリングして薄板Ｂにする作業を示し、
図５は、薄板Ｂをプレス機Ｐで円板状の板材１にパンチ
ングするプレス作業工程を示す図である。FIG. 2 is a perspective view of the continuously cast slab S, FIG. 3 shows an operation of cutting and removing impurities formed on the surface of the slab S, and FIG. 4 is a rolling machine M for the slab S.
Showing the work of rolling into a thin plate B while rolling with
FIG. 5 is a diagram showing a press working process in which the thin plate B is punched by the pressing machine P into the disc-shaped plate material 1.
【００２０】図６は、上記プレス工程により得られた板
材１を図示したものであり、この板材１は円板状にパン
チング加工することが最も望ましいが、多角形状に切断
したものでも次の工程に何ら差し支えない。FIG. 6 shows the plate material 1 obtained by the above pressing step. It is most preferable to punch the plate material 1 into a disc shape, but even if the plate material 1 is cut into a polygonal shape, the next step is performed. It doesn't matter.
【００２１】このように得られた円板状の板材１には、
不純物の混入がほとんどないので比較的加工性がよく、
また加工中亀裂も発生しない。図７に示すように上記円
板状の板材１を焼鈍しすることにより深絞り加工を行う
プレス工程に適うように軟質化する。The disc-shaped plate material 1 thus obtained has
It has relatively good workability because it contains almost no impurities.
Also, no cracks are generated during processing. As shown in FIG. 7, the disc-shaped plate material 1 is annealed so as to be softened so as to be suitable for a pressing process for deep drawing.
【００２２】図８及び図９は前記工程により準備された
円板状の板材１を有底状の円筒形に成形するためのプレ
ス工程を図示したもので、この発明の実施例を容量２２
kgの液化ガス容器を製造する方法に関して具体的に説明
する。8 and 9 show a pressing step for forming the disk-shaped plate material 1 prepared in the above step into a bottomed cylindrical shape.
A method for manufacturing a kg liquefied gas container will be specifically described.
【００２３】厚さ３．５mm、直径９５０mmに形成した円
板状の板材１の表面に潤滑油を塗布して円筒状のダイス
２０ａの上に置き、前記板材１の上部からポンチ３０ａ
を下降させ、図８（Ａ）のように板材１の中央部をプレ
スして、同図（Ａ）右側に示す直径７００mm、高さ４０
０mm、厚さ３mm、そして底部の厚さ３．５mmの有底状円
筒体１０ａを形成した（１次プレス工程）。Lubricating oil is applied to the surface of a disk-shaped plate 1 having a thickness of 3.5 mm and a diameter of 950 mm and placed on a cylindrical die 20a.
And press the central part of the plate material 1 as shown in FIG. 8 (A) to obtain a diameter of 700 mm and a height of 40 mm shown on the right side of FIG.
A bottomed cylindrical body 10a having a thickness of 0 mm, a thickness of 3 mm, and a bottom thickness of 3.5 mm was formed (primary pressing step).
【００２４】上記１次プレス工程により得られた円筒体
１０ａを図８（Ｂ）に示すように、１次プレス工程のダ
イス２０ａより小さい直径の円筒型ダイス２０ｂの上に
被せるように係合し、ポンチ３０ｂを下降させ円筒体１
０ａの底面よりプレスして、同図（Ｂ）右側に示す直径
３１０mm、高さ７８０mm、厚さ２．９mm、である円筒体
１０ｂを形成した（２次プレス工程）。As shown in FIG. 8 (B), the cylindrical body 10a obtained by the primary pressing step is engaged so as to cover the cylindrical die 20b having a diameter smaller than that of the die 20a of the primary pressing step. , The punch 30b is lowered, and the cylindrical body 1
By pressing from the bottom surface of 0a, a cylindrical body 10b having a diameter of 310 mm, a height of 780 mm, and a thickness of 2.9 mm shown in the right side of FIG. 3B was formed (secondary pressing step).
【００２５】これにより１次プレス工程により得られた
円筒体１０ａの外周面と内周面とが、２次プレス工程に
より裏返されるようにして変わるとともに、１次プレス
工程によってポンチ３０ａの進行方向に現れる表面凝結
現象を２次プレス工程により分散させ、円筒体１０ｂの
亀裂や破裂を防止できた。As a result, the outer peripheral surface and the inner peripheral surface of the cylindrical body 10a obtained by the primary pressing step are changed so as to be turned over by the secondary pressing step, and the traveling direction of the punch 30a is changed by the primary pressing step. The surface condensing phenomenon appearing in 1) was dispersed by the secondary pressing process, and the cracks and ruptures of the cylindrical body 10b were prevented.
【００２６】また、１次プレス工程により得られた円筒
体１０ａの長さと、２次プレス工程により押し伸ばされ
た円筒体１０ｂの長さの比率は、製作しようとする容器
の容量（規格）に合わせて引き抜きできるが、最も望ま
しくは円筒体１０ａに比べ、円筒体１０ｂの長さが２倍
以内となるように引き抜くことであることが確認され
た。The ratio of the length of the cylindrical body 10a obtained by the primary pressing step to the length of the cylindrical body 10b stretched by the secondary pressing step depends on the capacity (standard) of the container to be manufactured. Although it is possible to pull out together, it has been confirmed that it is most preferable to pull out so that the length of the cylindrical body 10b is within twice the length of the cylindrical body 10a.
【００２７】一方、大容量（規格）容器は、表面凝結を
再分散させ、高強度の製品に製作するのが望ましいの
で、上記２次プレス工程により得られた円筒体１０ｂ
を、その内・外周面が入れ替わるように再度プレス（３
次プレス工程）し、より緻密な組織を有する円筒体１０
ｃを得るのが望ましい（図９参照）。On the other hand, since it is desirable to manufacture a high-strength product by redispersing surface coagulation in a large-capacity (standard) container, the cylindrical body 10b obtained by the above-mentioned secondary pressing process.
Press again (3) so that the inner and outer surfaces are replaced.
Next pressing step), and a cylindrical body 10 having a denser structure
It is desirable to obtain c (see Figure 9).
【００２８】図９の３次プレス工程は例示に過ぎず、３
次プレス工程は図８（Ｂ）の方法によっても可能であ
り、また２次プレス工程は図９の方法によっても可能で
ある。The third pressing step of FIG. 9 is merely an example, and
The next pressing step can be performed by the method of FIG. 8B, and the secondary pressing step can be performed by the method of FIG.
【００２９】図１０は上記工程により得られた円筒体１
０ｂを再び引き抜いてその底面を曲面に成形する工程を
示す。このようにして作った容器１００を洗浄・焼鈍し
た後、図１１のように高速回転させながら、その開口部
外周を押出し加工温度（４７０℃）で加熱した後、図１
２に示すように駆動ローラー２００を容器１００の外周
面より内向きに向けて徐々に移動させることによりネッ
ク１１０を形成した。FIG. 10 shows the cylindrical body 1 obtained by the above process.
The step of drawing out 0b again to form the bottom surface into a curved surface is shown. After cleaning and annealing the container 100 manufactured in this way, the outer periphery of the opening is heated at the extrusion processing temperature (470 ° C.) while rotating at high speed as shown in FIG.
As shown in FIG. 2, the neck 110 was formed by gradually moving the drive roller 200 inward from the outer peripheral surface of the container 100.
【００３０】円筒状の容器１００の上段部直径は、この
ようなネック形成により著しく縮小され、これにより作
られた厚いネック１１０部分の先端を図１３に示すよう
に切断して、所定の規格に形成した後、図１４に示すよ
うにその内周面に螺子部１１１を形成し、開閉バルブ１
１２を螺合した。そのとき、容器１００のネック１１０
部分は容器の胴体部に比べてその直径が小さくて十分な
厚さをもつことになるので螺設加工が容易であった。The diameter of the upper portion of the cylindrical container 100 is remarkably reduced by forming such a neck, and the tip of the thick neck 110 portion thus formed is cut as shown in FIG. 13 to a predetermined standard. After the formation, the screw portion 111 is formed on the inner peripheral surface of the opening / closing valve 1 as shown in FIG.
12 were screwed together. At that time, the neck 110 of the container 100
The portion was smaller in diameter than the body of the container and had a sufficient thickness, so that the screwing process was easy.
【００３１】図１５乃至図１９はこの発明の仕上工程を
示すものであり、上記工程により作られた容器１００の
上段には、開閉バルブを保護するプロテクター１２０
を、その下段には容器を立たせるためのスカート１２１
を各々表面に溶接して取り付けた。FIGS. 15 to 19 show the finishing process of the present invention. The protector 120 for protecting the on-off valve is provided above the container 100 produced by the above process.
A skirt 121 for standing the container on the lower side
Were welded to each surface and attached.
【００３２】次に、プロテクター１２０及びスカート部
１２１を配設した容器を時効硬化後熱処理（図１６）す
ることにより耐圧性を高め、またこの容器１００の内・
外部をきれいに洗浄（図１７）し、かつ容器の表面に透
明フッ素樹脂をコーティング（図１８）をした。そし
て、腐食防止及び高品位の美的な効果を得ることができ
た。Next, the container provided with the protector 120 and the skirt portion 121 is heat-treated after age hardening (FIG. 16) to enhance the pressure resistance, and the container 100
The outside was washed cleanly (Fig. 17), and the surface of the container was coated with transparent fluororesin (Fig. 18). And, it was possible to obtain corrosion prevention and a high-quality aesthetic effect.
【００３３】上記実施例以外にも、前記Ａ６０６１、Ａ
２０１４及びＡ７０７５等の規格のアルミニウム板材を
使用して上記実施例と同様な方法で成形した結果（Ａ６
０６１の場合には溶体化処理をした）、上記実施例と同
様な容器を得ることができた。In addition to the above embodiments, the A6061, A
The result of molding in the same manner as in the above-mentioned embodiment using aluminum plate materials of standards such as 2014 and A7075 (A6
In the case of 061, the solution treatment was performed), and a container similar to that in the above-mentioned example could be obtained.
【００３４】[0034]
【発明の効果】このように、この発明に係る溶接継目の
ない液化ガス容器の製造方法及び溶接継目のない液化ガ
ス容器によれば、液化ガス容器を継目のない一体型に成
形することにより継目の部分が集中的に腐食された従来
の課題を解決することができるとともに、安全性も高く
なる。As described above, according to the method for producing a welded seamless liquefied gas container and the welded seamless liquefied gas container according to the present invention, the liquefied gas container is formed into a seamless integral type seam. In addition to being able to solve the conventional problem that the portion is corroded intensively, the safety is improved.
【００３５】また、鋼材の溶接による容器に比して、耐
圧性、気密性及び耐破裂性に優れた半永久的な耐久性を
得ることは勿論、従来の容器に比べ、その重量もほぼ５
分の２に軽減できる等、その取扱が容易となる等産業上
効果的な発明である。Further, in comparison with a container made by welding steel, semi-permanent durability excellent in pressure resistance, airtightness and rupture resistance can be obtained, and its weight is about 5 as compared with a conventional container.
This is an industrially effective invention in that it can be easily handled, for example, it can be reduced to half.
【図１】本発明に使用するアルミニウム合金の連続鋳造
法の説明図である。FIG. 1 is an explanatory view of a continuous casting method for an aluminum alloy used in the present invention.
【図２】鋳造したスラブの斜視図である。FIG. 2 is a perspective view of a cast slab.
【図３】鋳造したスラブの表面に形成された不純物を切
削・除去する作業を示した説明図である。FIG. 3 is an explanatory diagram showing an operation of cutting and removing impurities formed on the surface of a cast slab.
【図４】スラブを圧延機でローリングして薄板にする作
業を示した説明図である。FIG. 4 is an explanatory view showing an operation of rolling a slab by a rolling mill to form a thin plate.
【図５】薄板をプレス機で円板状の板材にパンチングす
るプレス工程を示した説明図である。FIG. 5 is an explanatory view showing a pressing step of punching a thin plate into a disk-shaped plate material by a pressing machine.
【図６】パンチングしたプレス工程により得られた板材
の斜視図である。FIG. 6 is a perspective view of a plate material obtained by a punching press process.
【図７】円板状の板材を焼鈍しする作業を示した説明図
である。FIG. 7 is an explanatory diagram showing an operation of annealing a disk-shaped plate material.
【図８】深絞り加工を行うプレス工程を示す説明図であ
り、（Ａ）は１次プレス工程を、（Ｂ）は２次プレス工
程を示すものである。8A and 8B are explanatory views showing a pressing step for performing deep drawing, in which FIG. 8A shows a primary pressing step and FIG. 8B shows a secondary pressing step.
【図９】３次プレス工程を示す説明図であり、（Ａ）は
プレス開始時、（Ｂ）はプレス完了時を示すものであ
る。9A and 9B are explanatory views showing a third pressing step, in which FIG. 9A shows the start of pressing and FIG. 9B shows the completion of pressing.
【図１０】円筒体の底面を曲面に成形する工程を示す説
明図である。FIG. 10 is an explanatory diagram showing a step of forming the bottom surface of the cylindrical body into a curved surface.
【図１１】容器を高速回転させながら、その開口部の周
辺を加熱している状態を示す説明図である。FIG. 11 is an explanatory diagram showing a state in which the periphery of the opening is heated while the container is rotated at a high speed.
【図１２】駆動ローラーを容器の外周面より内向きに向
けて徐々に移動させることによりネックを形成する方法
を示す説明図である。FIG. 12 is an explanatory diagram showing a method of forming a neck by gradually moving the drive roller inward from the outer peripheral surface of the container.
【図１３】ネック部分の先端を切断する方法を示す説明
図である。FIG. 13 is an explanatory diagram showing a method of cutting the tip of the neck portion.
【図１４】ネック部内周面に螺子部を形成する方法を示
す説明図である。FIG. 14 is an explanatory diagram showing a method of forming a screw portion on the inner peripheral surface of the neck portion.
【図１５】プロテクター及びスカート部を溶接する方法
を示す説明図である。FIG. 15 is an explanatory view showing a method of welding the protector and the skirt portion.
【図１６】熱処理工程を示す説明図である。FIG. 16 is an explanatory diagram showing a heat treatment step.
【図１７】容器内部を洗浄する方法を示す説明図であ
る。FIG. 17 is an explanatory diagram showing a method of cleaning the inside of the container.
【図１８】容器外部を洗浄する方法を示す説明図であ
る。FIG. 18 is an explanatory diagram showing a method of cleaning the outside of the container.
【図１９】容器表面にフッ素樹脂コーティングをする方
法を示す説明図である。FIG. 19 is an explanatory view showing a method for coating the surface of a container with a fluororesin.
１ 板材 １０ 円筒体 １０ａ 円筒体 １０ｂ 円筒体 ２０ａ ダイス ２０ｂ ダイス ３０ａ ポンチ ３０ｂ ポンチ １００ 容器 １１０ ネック １１１ 螺子部 １１２ 開閉バルブ １２０ プロテクター １２１ スカート ２００ 駆動ローラー Ｓ スラブ Ｍ 圧延機 Ｂ 薄板 1 plate material 10 cylindrical body 10a cylindrical body 10b cylindrical body 20a die 20b die 30a punch 30b punch 100 container 110 neck 111 screw part 112 opening / closing valve 120 protector 121 skirt 200 driving roller S slab M rolling machine B thin plate
Claims (8)
ダイス２０ａ上に載せた後、ポンチ３０ａでプレスして
深絞り加工して、有底状の円筒体１０ａを形成する１次
プレス工程と、前記１次プレス工程で得られた円筒体１
０ａを、前記ダイス２０ａの直径より小さいダイス２０
ｂに被せた後、再び適正規格のポンチ３０ｂにてプレス
して深絞り加工し、前記円筒体１０ａに比べ細長い有底
状の円筒体１０ｂを得る２次プレス工程と、前記工程に
より作った円筒体１０ｂを適正規格の直径の容器１００
に引き抜き成形する工程と、引き抜き成形された容器１
００の開口部を加工に適合な温度に加熱し、その外周面
に駆動ローラーを密着させて容器１００の開口部の直径
を縮小させるネッキング工程と、このネッキング加工か
ら得られた容器１００のネック１１０部分にバルブを螺
着するための螺子部を形成する工程とからなることを特
徴とする溶接継目のない液化ガス容器の製造方法。1. A primary pressing step of forming a bottomed cylindrical body 10a by placing an aluminum alloy plate material 1 on a cylindrical die 20a, followed by pressing with a punch 30a for deep drawing. The cylindrical body 1 obtained in the primary pressing step
0a is a die 20 smaller than the diameter of the die 20a.
After being covered with b, it is pressed again by a punch 30b of a proper standard to perform deep drawing, and a secondary pressing step for obtaining a cylindrical body 10b having a bottom which is elongated compared to the cylindrical body 10a, and a cylinder formed by the above step The body 10b is a container 100 having a proper diameter.
Pultrusion process and pultruded container 1
Necking step of heating the opening of No. 00 to a temperature suitable for processing and bringing the driving roller into close contact with the outer peripheral surface thereof to reduce the diameter of the opening of the container 100, and the neck 110 of the container 100 obtained from this necking processing. A method for producing a liquefied gas container without welding seams, which comprises a step of forming a screw portion for screwing a valve to a portion thereof.
接継目のない液化ガス容器の製造方法。2. The method for producing a liquefied gas container without welding seams according to claim 1, wherein the plate material 1 is circular.
溶接継目のない液化ガス容器の製造方法。3. The method for producing a liquefied gas container without welding seams according to claim 1, wherein the plate material 1 has a polygonal shape.
１、請求項２又は請求項３記載の溶接継目のない液化ガ
ス容器の製造方法。4. The method for manufacturing a liquefied gas container without welding seams according to claim 1, 2 or 3, wherein the plate material 1 is annealed.
２倍以内の範囲で引き抜く請求項１、請求項２、請求項
３又は請求項４記載の溶接継目のない液化ガス容器の製
造方法。5. The production of a welded seamless liquefied gas container according to claim 1, claim 2, claim 3 or claim 4, wherein the length of the cylindrical body 10a is pulled out within a range of 2 times in the secondary pressing step. Method.
０ａの外周面が２次プレス工程において、その内周面に
変わるように加工するようにした請求項１、請求項２、
請求項３、請求項４又は請求項５記載の溶接継目のない
液化ガス容器の製造方法。6. A cylindrical body 1 obtained by a primary pressing process.
The outer peripheral surface of 0a is processed so as to be changed to the inner peripheral surface thereof in the secondary pressing step.
A method for manufacturing a liquefied gas container without a welding seam according to claim 3, claim 4, or claim 5.
バルブを螺合する螺子部を形成できるように容器１００
のネック１１０部分を容器１００の他の部分に対し厚く
成形するようにした請求項１、請求項２、請求項３、請
求項４、請求項５又は請求項６記載の溶接継目のない液
化ガス容器の製造方法。7. The container 100 so that a screw part for screwing an opening / closing valve can be formed on the inner peripheral surface in the necking step.
The liquefied gas without welding seams according to claim 1, claim 2, claim 3, claim 4, claim 5, or claim 6, wherein the neck 110 portion of the container is formed thicker than the other portion of the container 100. Container manufacturing method.
筒体の開口部を通常の方法でネッキング加工し、バルブ
取付のためのネッキング機能の螺子部が形成してあるこ
とを特徴とする溶接継目のない液化ガス容器。8. Welding, characterized in that the opening of a cylindrical body obtained by press molding two or more times is necked by a usual method to form a screw portion having a necking function for valve mounting. Seamless liquefied gas container.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930000717A KR950006255B1 (en) | 1992-11-16 | 1993-01-20 | Process for manufacturing gas container and apparatus therefor |
| KR1993P717 | 1993-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06234029A true JPH06234029A (en) | 1994-08-23 |
| JP2525717B2 JP2525717B2 (en) | 1996-08-21 |
Family
ID=19349836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5148367A Expired - Fee Related JP2525717B2 (en) | 1993-01-20 | 1993-05-28 | Method for manufacturing liquefied gas container without welding seam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525717B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020073364A (en) * | 2001-04-13 | 2002-09-26 | 홍영표 | Portable gas container |
| KR20030004198A (en) * | 2002-11-23 | 2003-01-14 | 이성형 | Drug tank for fire extinguisher and manufacturing method thereof |
| JP2008096057A (en) * | 2006-10-13 | 2008-04-24 | Toho Kasei Kk | Liquid heating device |
| WO2012050274A1 (en) * | 2010-10-13 | 2012-04-19 | (주)디에이치메탈코리아 | Method for manufacturing an air tank, and air tank manufactured by the method |
| JP2021134923A (en) * | 2020-02-21 | 2021-09-13 | 株式会社Tan−Ei−Sya | Aluminum alloy pressure container and method for manufacturing the same |
| JP2023022909A (en) * | 2021-08-04 | 2023-02-16 | サムテック株式会社 | Manufacturing method for pressure vessel and closing plug |
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| JPS5156766A (en) * | 1974-11-14 | 1976-05-18 | Choken Kogyo Kk | KINZOKU PAIPUSHIBORIKI |
| JPS57159228A (en) * | 1980-11-28 | 1982-10-01 | Toubetsuchifuichio Rigure Spa | Manufacture of thin wall integral molding hollow metal body and its hollow metal body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020073364A (en) * | 2001-04-13 | 2002-09-26 | 홍영표 | Portable gas container |
| KR20030004198A (en) * | 2002-11-23 | 2003-01-14 | 이성형 | Drug tank for fire extinguisher and manufacturing method thereof |
| JP2008096057A (en) * | 2006-10-13 | 2008-04-24 | Toho Kasei Kk | Liquid heating device |
| WO2012050274A1 (en) * | 2010-10-13 | 2012-04-19 | (주)디에이치메탈코리아 | Method for manufacturing an air tank, and air tank manufactured by the method |
| JP2021134923A (en) * | 2020-02-21 | 2021-09-13 | 株式会社Tan−Ei−Sya | Aluminum alloy pressure container and method for manufacturing the same |
| JP2023022909A (en) * | 2021-08-04 | 2023-02-16 | サムテック株式会社 | Manufacturing method for pressure vessel and closing plug |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2525717B2 (en) | 1996-08-21 |
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