JP2009187750A - Method of manufacturing bottomed container - Google Patents
Method of manufacturing bottomed container Download PDFInfo
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- JP2009187750A JP2009187750A JP2008025515A JP2008025515A JP2009187750A JP 2009187750 A JP2009187750 A JP 2009187750A JP 2008025515 A JP2008025515 A JP 2008025515A JP 2008025515 A JP2008025515 A JP 2008025515A JP 2009187750 A JP2009187750 A JP 2009187750A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims description 29
- 238000003466 welding Methods 0.000 claims description 14
- 238000005304 joining Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 13
- 238000005520 cutting process Methods 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 6
- 239000011255 nonaqueous electrolyte Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 239000012611 container material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Description
本発明は、非水電解液二次電池などの密閉型電池に用いる底付き容器の製造方法に関するものである。 The present invention relates to a method for manufacturing a bottomed container used in a sealed battery such as a nonaqueous electrolyte secondary battery.
近年、ＡＶ機器や携帯電話やノートパソコン等の、ポータブルな電気・電子機器の普及が急速に進んでいる。これらの電気・電子機器が急速に普及した背景として、駆動用電源としてのアルカリ蓄電池、リチウム二次電池に代表される非水電解液二次電池の高性能化、高容量化が挙げられる。そして、前記ポータブルな電気・電子機器のさらなる発展のためにも、非水電解液二次電池をさらに小型化しかつ高容量化することが望まれている。 In recent years, portable electric / electronic devices such as AV devices, mobile phones, and notebook personal computers are rapidly spreading. The background of the rapid spread of these electric / electronic devices is the increase in performance and capacity of non-aqueous electrolyte secondary batteries represented by alkaline storage batteries and lithium secondary batteries as drive power sources. In order to further develop the portable electric / electronic device, it is desired to further reduce the size and increase the capacity of the non-aqueous electrolyte secondary battery.
ところで、前記二次電池は発電要素を電池容器内に収納させた構造とされている。そして、小型化された前記電気・電子機器において、電池を収めるスペースは限られているために、容器の側面外周からフランジやその他の突起がはみ出す事は許されない。さらに、電池容器には、当該容器内に充填された非水系の有機電解液に対する優れた耐食性が要求される。
したがって、一般的に、電池容器には、プレス成形が容易なＮｉめっき鋼板、アルミニウム板あるいはアルミニウム合金板を素材とした深絞り品が用いられている（例えば特許文献１参照）。そして、深絞り品の開口部を同寸法の蓋で塞ぎ、レーザー溶接法等で接合し気密容器を得ている。
By the way, the secondary battery has a structure in which a power generation element is housed in a battery container. In the miniaturized electric / electronic device, since the space for storing the battery is limited, it is not allowed that a flange or other protrusion protrudes from the outer periphery of the side surface of the container. Furthermore, the battery container is required to have excellent corrosion resistance against the non-aqueous organic electrolyte filled in the container.
Therefore, in general, a deep drawn product made of a Ni-plated steel plate, an aluminum plate, or an aluminum alloy plate, which is easy to press-mold, is used for the battery container (see, for example, Patent Document 1). Then, the opening of the deep-drawn product is closed with a lid of the same size and joined by a laser welding method or the like to obtain an airtight container.
また、電池のさらなる小型化に対応させるために、容器材料としてアルミニウムあるいはアルミニウム合金に替えて高強度のステンレス鋼を用いることも提案されている。
例えば、特許文献２では、負極端子を兼ねる負極缶等にオーステナイト系ステンレス鋼を用いている。また、特許文献３でも、容器にステンレス鋼を用いている。
For example, in Patent Document 2, austenitic stainless steel is used for a negative electrode can that also serves as a negative electrode terminal. Also in Patent Document 3, stainless steel is used for the container.
容器材料として高強度のステンレス鋼を用いることにより板厚を薄くすることができ、結果として容器、すなわち電池の小型化が可能となる。しかしながら、ステンレス鋼の加工性はアルミニウムあるいはアルミニウム合金よりも低い。このため、深さの深い容器を深絞り法で成形しようとすると困難を伴う。特にオーステナイト系ステンレス鋼と比べて加工性が劣るフェライト系ステンレス鋼板を素材として、深い底付き容器を深絞り法で得ることは極めて難しくなる。
そこで、例えば図１に示すように、円筒体や角筒体を胴材とし、その端部開口部に同寸法の底板を被せ、図２に示すように胴材体と底板を溶接接合して容器を形成している。
By using high-strength stainless steel as the container material, the plate thickness can be reduced, and as a result, the container, that is, the battery can be downsized. However, the workability of stainless steel is lower than that of aluminum or aluminum alloys. For this reason, it is difficult to form a deep container by a deep drawing method. In particular, it becomes extremely difficult to obtain a deep bottomed container by a deep drawing method using a ferritic stainless steel plate, which is inferior in workability as compared with austenitic stainless steel.
Therefore, for example, as shown in FIG. 1, a cylindrical body or a rectangular tube body is used as a body, and a bottom plate of the same size is put on the end opening, and the body body and the bottom plate are welded and joined as shown in FIG. A container is formed.
この方法は、胴材として筒体が使用できるため、製造する容器の深さに制限がなく、しかも材料歩留も極めてよい。しかも底のコーナーが小さいために容積率の高い容器が得られるといったメリットがある。しかしながら、胴材となる筒体端部の切口は筒体切断時に変形していることが多い。このため、底板の接合前に筒体の切口形状を本来の断面形状に矯正する必要がある。また、切断端面を平らにしないと被せた底板との溶接接合が円滑に行えない。したがって、品質の優れ容器を得ようとすると、コストが嵩んでしまう。 In this method, a cylindrical body can be used as the body, so that the depth of the container to be manufactured is not limited, and the material yield is extremely good. Moreover, since the bottom corner is small, there is an advantage that a container with a high volume ratio can be obtained. However, the cut at the end of the cylinder serving as the body is often deformed when the cylinder is cut. For this reason, it is necessary to correct the cut shape of the cylinder to the original cross-sectional shape before joining the bottom plates. Moreover, unless the cut end face is flattened, welding and joining with the covered bottom plate cannot be performed smoothly. Therefore, if an attempt is made to obtain an excellent quality container, the cost will increase.
本発明は、このような問題点を解消するために案出されたものであり、非水電解液二次電池などの密閉型電池に用いる底付き容器を、加工性に劣る材料を素材とするものであっても、あるいは深さの深い容器であっても、精度よく、簡便に製造する方法を提供することを目的とする。 The present invention has been devised to solve such problems, and a bottomed container used for a sealed battery such as a non-aqueous electrolyte secondary battery is made of a material that is inferior in workability. It is an object of the present invention to provide a method for easily and accurately manufacturing even a container or a deep container.
本発明の底付き容器の製造方法は、その目的を達成するため、両端に開口部を有する断面一様な筒状胴材の一方の開口部に底板を嵌め込んで当該底板端部と前記胴材内面とを溶接接合して底付き容器を製造する方法であって、筒状胴材の底板嵌め込み側端部を、前記筒状胴材の端部より離れた定常部の寸法よりも小さくなるように口絞り加工した後、定常部の内側寸法よりも小さくかつ口絞りした端部の内側寸法よりも大きい外形寸法に調整された底板を前記胴材内に挿入し、当該底板を前記口絞り加工された開口部に向けて開口端まで移動させることによって開口部端に前記底板を配置し、その位置で開口部端の胴材内壁と底板端とを溶接接合することを特徴とする。
筒状胴材が円筒である場合に、円板状の底板を用いることにより円筒形の容器が製造される。
In order to achieve the object of the manufacturing method of a container with a bottom of the present invention, a bottom plate is fitted into one opening of a cylindrical body having a uniform cross section having openings at both ends, and the end of the bottom plate and the body A method of manufacturing a bottomed container by welding and joining an inner surface of a material, wherein a bottom plate fitting side end of a cylindrical body is smaller than a dimension of a stationary part separated from an end of the cylindrical body After the squeezing process, a bottom plate adjusted to have an outer dimension smaller than the inner dimension of the stationary part and larger than the inner dimension of the squeezed end is inserted into the body, and the bottom plate is inserted into the squeezing part. The bottom plate is arranged at the opening end by moving the opening toward the processed opening, and the inner wall of the body at the opening and the bottom plate end are welded to each other at that position.
When the cylindrical body is a cylinder, a cylindrical container is manufactured by using a disk-shaped bottom plate.
本発明の底付き容器の製造方法では、底板を嵌め込もうとする筒状胴材の端部を、離れた定常部の寸法よりも小さくなるように口絞り加工した後、定常部の内側寸法よりも小さくかつ口絞りした端部の内側寸法よりも大きい外形寸法に調整された底板を前記胴材内に挿入し、当該底板を前記口絞り加工された開口部に向けて開口端まで移動させることによって開口部端に底板を配置している。底板の移動時に、一旦口絞り加工された開口端子近傍の胴材内壁が広げられるように変形されて、開口部端の胴材内壁と底板端との間隔が狭くなり、いわゆるしまり嵌めとなっている。したがって、開口部端胴材内壁と底板端との溶接接合が行いやすくなって、形状精度に優れた底付き容器を低コストで製造することができる。特に高速での接合が可能なレーザー溶接のような寸法精度の高い継ぎ手を要求される場合に好適な、隙間の少ない突合せ形状を得ることができる。 In the manufacturing method of the container with a bottom of the present invention, after the end portion of the cylindrical body member into which the bottom plate is to be fitted is squeezed so as to be smaller than the dimension of the separated stationary part, the inner dimension of the stationary part A bottom plate that is smaller and smaller than the inner dimension of the squeezed end is inserted into the body, and the bottom plate is moved toward the squeezed opening to the open end. Thus, the bottom plate is arranged at the end of the opening. When the bottom plate is moved, it is deformed so that the inner wall in the vicinity of the opening terminal once squeezed is widened, and the interval between the inner wall of the opening at the end of the opening and the bottom plate end is narrowed, so-called a tight fit. Yes. Therefore, it becomes easy to perform welding joining of the inner wall of the opening end body and the end of the bottom plate, and a bottomed container with excellent shape accuracy can be manufactured at low cost. Particularly, when a joint with high dimensional accuracy such as laser welding capable of high-speed joining is required, a butt shape having a small gap can be obtained.
前記した通り、円筒体や角筒体を胴材とし、その端部開口部に同寸法の蓋を被せ、胴材と蓋材を溶接接合して容器を形成する際には、胴体となる筒体の切断端部に加工変形が起こりやすく、矯正が必要となる。また、蓋と切断端面との当接部には、不規則な隙間が形成されやすい。したがって、両者の溶接接合には手間がかかる。
そこで、本発明者等は、胴材を素材とし、その開口端に蓋となる板を配した際、蓋材と胴材との当接部の隙間を均一かつ狭くする方法について鋭意検討し、本発明に到達した。
以下にその詳細を説明する。
As described above, when a cylindrical body or a rectangular tube body is used as a body, a cover of the same size is put on the end opening, and the body and the cover are welded to form a container, the cylinder that becomes the body Work deformation is likely to occur at the cut end of the body, and correction is required. In addition, irregular gaps are easily formed at the contact portion between the lid and the cut end surface. Therefore, it takes time to weld and join the two.
Therefore, the inventors of the present invention have made the body as a raw material, and intensively studied a method for uniformly and narrowing the gap between the contact portion between the lid and the body when a plate serving as a lid is arranged at the opening end of the body. The present invention has been reached.
Details will be described below.
まず、所要径を有する筒体を所要長さにカットする。
カット法としては筒体が円筒形状の場合は、円筒の内外に回転刃を配してせん断する方法、外側の回転刃を押し込んで切断する方法、旋盤での突っ切りバイトでの切削による方法、回転鋸刃や砥石等による切断の後にバリ取りを行う方法等、多様な方法を適用することができる。前者の２つの回転刃による方法においては、円筒に押し込まれる外刃側の端部が定常部よりも縮径して小さくなる場合があるが、そのような場合には切断によって縮径した端部の内径を調整することによって後述する口絞り加工を兼ねることもできる。
First, a cylindrical body having a required diameter is cut to a required length.
As the cutting method, when the cylinder is cylindrical, a method of shearing by placing a rotating blade inside and outside the cylinder, a method of cutting by pushing the outer rotating blade, a method of cutting with a parting tool on a lathe, rotation Various methods such as a method of deburring after cutting with a saw blade or a grindstone can be applied. In the former method using the two rotary blades, the end on the outer blade side that is pushed into the cylinder may be smaller in diameter than the steady portion, and in such a case, the end that has been reduced in diameter by cutting. By adjusting the inner diameter, it can also serve as a mouth drawing process to be described later.
筒体が四角形等の円筒形状以外のものでは、後者の回転鋸刃や砥石等による方法等の筒体を回転させないで切断する方法に限られるが、このような方法では多くの場合切断の後にバリ取りを行う必要がある。切断後の端部のバリを除去するために面取りを行う際は、溶接の施工性を損なわないように面取り量は筒体の厚みの２０％程度以下の最小限の大きさとすることが好ましい。 If the cylindrical body is other than a cylindrical shape such as a quadrangle, it is limited to the method of cutting without rotating the cylindrical body such as the latter method using a rotary saw blade or a grindstone, etc., but in such a method in many cases after cutting It is necessary to deburr. When chamfering is performed to remove burrs at the end after cutting, the chamfering amount is preferably set to a minimum size of about 20% or less of the thickness of the cylinder so as not to impair the workability of welding.
次に、カットされた筒体の閉じようとする筒端に縮径の口絞り加工を施す。
まず筒体が円筒形状であって、さらに閉じようとする筒体の端部が端部から離れた定常部とほぼ同等かあるいは目的とする端部の径よりも大きい径である場合について説明する。なお、このような端部の径の寸法の差異は主に前述したカット法の影響によるものである。口絞り加工は筒体の断面形状と相似形状の穴を持つテーパーダイスに端部を押し込むことにより行われる。
Next, a diameter-reducing squeezing process is performed on the end of the cut cylinder.
First, a case where the cylindrical body has a cylindrical shape and the end portion of the cylindrical body to be closed has a diameter substantially equal to or larger than the diameter of the target end portion will be described. . Such a difference in the diameter of the end is mainly due to the influence of the cutting method described above. Mouth drawing is performed by pushing the end into a tapered die having a hole having a shape similar to the cross-sectional shape of the cylinder.
テーパーダイスの角度としては押し込み力低減、あるいは座屈防止等の観点よりダイス半角で５°から１５°程度とするのが好ましい。好ましい口絞り量（定常部と端部の内径の差）としては筒体および底板の寸法や材質によって異なるが、口絞りされた端部が底板により押し広げられる際のひずみ量が筒体の弾性限界（おおよそ０．２％程度）から２%程度となるように調整するのが好ましい。押し広げられる量が弾性ひずみ限界より小さい場合には筒体と底板の拘束が弱く、振動あるいは溶接途中の熱ひずみ等により底板が所定の位置よりずれる恐れがある。また、押し広げられる量が２%を超えると底板を筒体の端部に押し込む際に底板の周囲に座屈等の形状不良が発生したり、筒体の内部に疵を生じる恐れがある。口絞り加工を施す部分の長さはテーパーダイスの角度と口絞りによって決まり、実際には筒体の端部をテーパーダイスに押し当てて荷重が立ち上がる時点を起点として、スプリングバック後の内径が目的値となるように適正な押し込み量を求めることにより、口絞り量を調整することができる。 The angle of the taper die is preferably about 5 ° to 15 ° as a die half angle from the viewpoint of reducing the pushing force or preventing buckling. The preferred amount of aperture restriction (difference between the inner diameter of the stationary part and the end part) varies depending on the dimensions and materials of the cylinder and the bottom plate, but the amount of strain when the end part that has been throttled is expanded by the bottom plate is the elasticity of the cylinder. It is preferable to adjust from the limit (approximately 0.2%) to approximately 2%. When the amount of expansion is smaller than the elastic strain limit, the restraint between the cylinder and the bottom plate is weak, and the bottom plate may be displaced from a predetermined position due to vibration or thermal strain during welding. On the other hand, if the amount of spread exceeds 2%, there is a risk that when the bottom plate is pushed into the end portion of the cylinder, a shape defect such as buckling occurs around the bottom plate, or wrinkles are generated inside the cylinder. The length of the part to be subjected to squeezing is determined by the angle of the taper die and the squeeze. Actually, the inner diameter after springback is the starting point when the end of the cylinder is pressed against the taper die and the load rises. By obtaining an appropriate push amount so as to be a value, the aperture amount can be adjusted.
次にカット法に起因して閉じようとする筒体の端部が目的とする端部の径と同等か小さい場合について説明する。
端部寸法が小さすぎる場合には短部の内径よりも大きい外径を有したパンチあるいはプラグを筒体に押し通すことによって拡径する。この場合にも底板の固定が確実に行われるように端部の内径は定常部から端部に行くに従って次第に小さくなるようにすることが好ましい。
Next, the case where the end of the cylinder to be closed due to the cutting method is equal to or smaller than the diameter of the target end will be described.
If the end dimension is too small, the diameter is increased by pushing a punch or plug having an outer diameter larger than the inner diameter of the short part through the cylindrical body. Also in this case, it is preferable that the inner diameter of the end portion gradually decreases from the steady portion to the end portion so that the bottom plate is securely fixed.
上記とは別に、底板となる板体を準備する。底板は筒体の内径と相似な平面形状を有し、その外形寸法は筒体の定常部を抵抗なく移動できる程度の隙間が確保される程度に小さく、かつ口絞りされた端部の内径寸法よりも０．２％〜２％大きい寸法とする。
上記で準備された胴体内に底板を挿入し、この底板を前記口絞り加工された胴体開口部に向けて開口端まで移動させる。その際、底板を取り付ける側の端部を平坦な面に押し当てて、開口部より先端が平坦で外径が底板より若干小さく長さが筒体よりも長い丸棒を先端が底板に接触するまで挿入し、筒体の開口部より突き出たもう一方の端部をプレス等により底板が筒体の端部が押し当てられた平坦な面に当接するまで押すことで、底板を所定の位置に固定する。
Separately from the above, a plate body serving as a bottom plate is prepared. The bottom plate has a planar shape similar to the inner diameter of the cylinder, and its outer dimensions are small enough to secure a gap that can move without resistance in the steady part of the cylinder, and the inner diameter of the end of the aperture The size is 0.2% to 2% larger than the above.
A bottom plate is inserted into the body prepared above, and the bottom plate is moved to the opening end toward the body opening subjected to the mouth drawing process. At that time, the end on the side to which the bottom plate is attached is pressed against a flat surface, and the tip contacts the bottom plate with a round bar whose tip is flatter than the opening and whose outer diameter is slightly smaller than the bottom plate and longer than the cylinder. Until the bottom plate comes into contact with the flat surface against which the end of the cylinder is pressed by pressing the other end of the cylinder. Fix it.
上記の底板の押圧移動時に、口絞り加工された胴体部は次第に拡げられ、筒端開口部に到達した時点で、底板の端部が胴材端開口部の内壁に密接した状態となっており、さらに底板は筒材の弾性回復力により締め付けられた状態にあることから、製造工程中の取り扱い中の振動や衝撃で底板が筒材の所定の位置からずれたり外れたりすることがない。また、溶接工程中には既に溶接された部分の熱ひずみにより未溶接部がずれる恐れがあることから、嵌合力が弱い場合には本溶接前に溶接線上の数箇所を数点仮留め溶接する必要があるが、本発明法では底板が筒材により強固に保持されているため、仮留め溶接を省略することができる。
このため、胴材端開口部内壁と底板端との溶接接合が行いやすくなる。すなわち、被接合部材が密接されているため、レーザー照射による溶接が簡便かつ精度良く行える。
During the pressing movement of the bottom plate, the body part that has been subjected to squeezing is gradually expanded, and when reaching the cylinder end opening, the end of the bottom plate is in close contact with the inner wall of the body end opening. Furthermore, since the bottom plate is tightened by the elastic recovery force of the cylindrical member, the bottom plate is not displaced or detached from a predetermined position of the cylindrical member due to vibration or impact during handling during the manufacturing process. In addition, during the welding process, there is a possibility that the unwelded part may shift due to thermal distortion of the already welded part, so if the fitting force is weak, several points on the weld line are temporarily welded before the main welding. Although it is necessary, in the method of the present invention, since the bottom plate is firmly held by the cylindrical material, temporary welding can be omitted.
For this reason, it becomes easy to perform welding joining of the inner wall of the body end opening and the end of the bottom plate. That is, since the members to be joined are in close contact, welding by laser irradiation can be performed easily and accurately.
本発明の底付き容器の製造方法は、筒状胴材が円筒で、円筒形の容器を製造する際に好適に用いられるが、被加工筒体が角筒であっても構わない。
角筒を被加工体とする場合には、胴体端の口絞り加工に使用するテーパーダイスの穴形状を角筒のコーナーＲ部も含めた断面形状と相似な形状にすればよい。
The method for manufacturing a bottomed container according to the present invention is preferably used when a cylindrical body is cylindrical and a cylindrical container is manufactured, but the cylinder to be processed may be a rectangular tube.
When a rectangular tube is used as a workpiece, the hole shape of the taper die used for the mouth drawing of the body end may be similar to the cross-sectional shape including the corner R portion of the rectangular tube.
板厚０．５ｍｍ、外径２６ｍｍのＳＵＳ４３６ステンレス鋼パイプを供試材とした。このパイプを７０ｍｍの長さにカットし、パイプ端から約１．５ｍｍの範囲で次第に細くなるように、そしてパイプ端の最小内径が２４．６ｍｍになるように、パイプ端の一端に縮径の口絞り加工を施した。
一方、同材質、同板厚のステンレス鋼板から、直径２４．９ｍｍの円板を切り出した。
前記一端に縮径の口絞り加工を施したパイプの他端から、上記円板を挿入した。
続いて、円板を挿入した側から、前記円板を、補助棒を用いて口絞り加工を施したパイプ端方向に垂直に前記円板の前面がパイプ端面と合致するまで最大圧１０ｋＮで押圧した。
その後、円板端面とパイプ内面の当接面にレーザーを照射して、両者を溶接接合した。
A SUS436 stainless steel pipe having a plate thickness of 0.5 mm and an outer diameter of 26 mm was used as a test material. The pipe is cut to a length of 70 mm, and the diameter of the pipe end is reduced at one end of the pipe end so that the pipe end gradually becomes thinner within a range of about 1.5 mm and the minimum inner diameter of the pipe end is 24.6 mm. Mouth drawing was performed.
On the other hand, a disc having a diameter of 24.9 mm was cut out from a stainless steel plate having the same material and thickness.
The disk was inserted from the other end of the pipe whose one end was subjected to a reduced diameter mouth drawing process.
Subsequently, from the side where the disk is inserted, the disk is pressed at a maximum pressure of 10 kN until the front surface of the disk matches the pipe end surface perpendicularly to the pipe end direction subjected to squeezing using an auxiliary rod. did.
Then, the laser was irradiated to the contact surface of a disk end surface and a pipe inner surface, and both were weld-joined.
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| JP2008025515A JP5234737B2 (en) | 2008-02-05 | 2008-02-05 | Manufacturing method of bottomed container |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2014208702A (en) * | 2014-07-31 | 2014-11-06 | カルピス株式会社 | Composition for controlling autonomic nerve activity, and method for controlling autonomic nerve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148476A (en) * | 1980-04-18 | 1981-11-17 | Matsushita Electric Ind Co Ltd | Manufacture of bottomed cylindrical container |
| WO2006123666A1 (en) * | 2005-05-17 | 2006-11-23 | Toyo Seikan Kaisha, Ltd. | Three-piece square can and method of manufacturing the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148476A (en) * | 1980-04-18 | 1981-11-17 | Matsushita Electric Ind Co Ltd | Manufacture of bottomed cylindrical container |
| WO2006123666A1 (en) * | 2005-05-17 | 2006-11-23 | Toyo Seikan Kaisha, Ltd. | Three-piece square can and method of manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014208702A (en) * | 2014-07-31 | 2014-11-06 | カルピス株式会社 | Composition for controlling autonomic nerve activity, and method for controlling autonomic nerve |
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