JPH07124762A - Method for welding parts to plate of aluminum and the like - Google Patents
Method for welding parts to plate of aluminum and the likeInfo
- Publication number
- JPH07124762A JPH07124762A JP30082393A JP30082393A JPH07124762A JP H07124762 A JPH07124762 A JP H07124762A JP 30082393 A JP30082393 A JP 30082393A JP 30082393 A JP30082393 A JP 30082393A JP H07124762 A JPH07124762 A JP H07124762A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- plate
- parts
- aluminum
- nut
- 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
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- Pressure Welding/Diffusion-Bonding (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明はアルミニウム等酸化皮
膜を付けた金属の板面に、同材質又は異質のナット、ボ
ルト類の部品を溶着する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding nuts and bolts of the same material or different materials to a plate surface of a metal having an oxide film such as aluminum.
【0002】[0002]
【従来の技術】アルミニウム、ジルコニウム、それらの
合金等の板材は構造用に多量に使用されている。しかし
構造材として必要な溶接性は軟鋼板に比べて著しく劣
る。アルミニウムは熱伝導が良過ぎ、溶融時粘性に乏し
いため溶融溶接に不利である。また抵抗溶接も電気抵抗
が大きい酸化皮膜の存在と、加圧電極へのピックアップ
(溶融金属の一部が電極にこびり付く)現象のため容易
でない。板相互の溶接でも上述のように面倒であるか
ら、ましてその板面へナット等部品を溶着することは溶
融溶接、抵抗溶接の適用範囲外とされ、面倒なろう接、
接着や構造設計の工夫に任せているのが現状である。2. Description of the Related Art Sheet materials such as aluminum, zirconium and alloys thereof are used in large quantities for structural purposes. However, the weldability required as a structural material is significantly inferior to that of mild steel. Aluminum has a poor thermal conductivity and a poor viscosity when melted, which is disadvantageous for fusion welding. Resistance welding is also not easy due to the presence of an oxide film having a large electric resistance and the phenomenon of picking up on a pressure electrode (a part of molten metal sticks to the electrode). Since welding between plates is also troublesome as described above, it is much more difficult to weld parts such as nuts to the plate surface because it is out of the applicable range of fusion welding and resistance welding.
The current situation is to leave the contrivances to adhesion and structural design.
【0003】[0003]
【発明が解決しようとする課題】構造材として鋼板の場
合は、プロジェクション・ナットを板面に載せて電気抵
抗(プロジェクション)溶接機で容易に溶着できるの
で、板面へのナット溶着は組立てに不可欠な技術になっ
ている。しかしアルミニウム板に対しては、上のプロジ
ェクション溶接は極めて難しい。ナット下面の突起が融
け去っても電極の追随が遅いため溶着しにくいのであ
る。本発明者等は先に、抵抗溶接困難な構造用アルミニ
ウム板同士を、超音波溶接によって重ね溶接する道を開
いているが、この発明は更に困難な、板面にナット等の
部品を溶着する技術の開発を課題として捕らえた。When a steel plate is used as the structural material, a projection nut can be placed on the plate surface and easily welded by an electric resistance (projection) welder. Therefore, nut welding on the plate surface is essential for assembly. It has become a technology. However, for aluminum plates, the above projection welding is extremely difficult. Even if the protrusions on the lower surface of the nut are melted off, the electrodes do not follow easily because they follow the electrode slowly. The inventors of the present invention have previously opened a way for ultrasonically welding structural aluminum plates that are difficult to resistance-weld to each other, but the present invention is more difficult to weld parts such as nuts to the plate surface. The development of technology was caught as an issue.
【0004】[0004]
【課題を解決するための手段】当初、アルミニウム板面
に普通のアルミニウム製ナットを載せ、超音波溶接機の
加圧力、電力、振動時間を種々に変えて実験したが、す
べて不可であった。そこで板面と上記ナットとの間にア
ルミニウム箔を挟んで実験を続けたところ、一応溶着し
得た。しかしこれは一種のろう接であって、溶接でな
く、強度も弱い。そこで試みに軟鋼製プロジェクション
・ナットと同形の下面突起付きのアルミニウム製ナット
を試作して実験したところ、加圧力等の溶接条件を適当
に選べば溶着可能であった。実験前は、ナット下面に突
起を設けるとホーンチップ下面の滑り止め凹凸模様以上
に相対滑りを抑えるから、ナットと板面の振動摩擦によ
る接合は困難でないかと考えていたが、結果は反対であ
った。[Means for Solving the Problems] Initially, an ordinary aluminum nut was placed on the surface of an aluminum plate, and various pressures, electric powers, and vibration times of the ultrasonic welding machine were changed and tested, but all were unsuccessful. Therefore, when the experiment was continued with the aluminum foil sandwiched between the plate surface and the nut, it was possible to tentatively weld. However, this is a kind of brazing, not welding, and the strength is weak. Therefore, when an aluminum nut with a lower surface protrusion having the same shape as that of a mild steel projection nut was experimentally manufactured and tested, it was possible to weld it by appropriately selecting welding conditions such as pressing force. Before the experiment, we thought that it would be difficult to join the nut and the plate surface by vibrating friction, because if the protrusion is provided on the lower surface of the nut, the relative slip is suppressed more than the anti-slip concave and convex pattern on the lower surface of the horn tip, but the result is the opposite. It was
【0005】このようにして得られたこの発明のアルミ
ニウム等の板面への部品溶着方法は、酸化皮膜を持つア
ルミニウム等の板面に同材質又は異質の部品を溶着する
方法であって、部品の溶着予定面に先の尖った突起を複
数個設けておき、それら突起を上記板面に当てゝ超音波
溶接機のホーンチップ、アンビル間に挟み、上記突起が
ほゞ完全に潰れるように溶接機の加圧力、電力、振動時
間を選んで溶接することを特徴とする。またそのホーン
チップ、アンビルの加圧面は滑り止め凹凸模様付きであ
り、その凸面が被溶接物に食い込むのを妨げない厚み
で、上記加圧面に有機物層を塗るか載せて上記板と部品
を挟むことを特徴とする。The thus obtained method for welding parts to a plate surface of aluminum or the like according to the present invention is a method of welding parts of the same material or different materials to a plate surface of aluminum or the like having an oxide film. A plurality of pointed protrusions are provided on the surface to be welded, and the protrusions are applied to the plate surface, sandwiched between the horn tip of the ultrasonic welding machine and the anvil, and welded so that the protrusions are almost completely crushed. The feature is that welding is performed by selecting the pressing force of the machine, electric power, and vibration time. The pressing surface of the horn tip and anvil has a non-slip concave and convex pattern, and the convex surface has a thickness that does not prevent it from biting into the object to be welded. It is characterized by
【0006】[0006]
【作用】周知技術である鋼板への鋼製プロジェクション
・ナット溶着の原理は、大電流をナット下面の突起と板
面との接触部に集中させることにより付近を昇温させ、
昇温による抵抗増大で内部まで昇温させて突起基部と板
面とを圧着するのである。その原理がアルミニウムの場
合通用しない理由は、電気抵抗の高いアルミニウム表面
の酸化皮膜の存在、溶融点の低さ、溶融の早さ、昇温し
ても抵抗が増えない事等が挙げられる。鋼板では抵抗溶
接に極めて有効なナット下面の突起が、アルミニウム板
とナットでは無価値になるのである。[Operation] The principle of welding a steel projection nut onto a steel plate, which is a well-known technique, is to concentrate a large current on the contact portion between the projection on the lower surface of the nut and the plate surface to raise the temperature in the vicinity.
The resistance is increased by the temperature rise, and the temperature is raised to the inside, and the projection base and the plate surface are pressure bonded. The reason why the principle is not applicable in the case of aluminum is that there is an oxide film on the surface of aluminum having high electric resistance, the melting point is low, the melting speed is high, and the resistance does not increase even if the temperature is raised. The projections on the bottom surface of the nut, which are extremely effective for resistance welding with steel plates, are worthless with aluminum plates and nuts.
【0007】しかし抵抗溶接では無価値のナット下面の
突起も、超音波溶接では見事に働くことが分った。すな
わちナットの材質は板材より固いものを使うから、その
下面の突起は板面の酸化皮膜を押砕き、引っかいた後に
摩擦熱で軟化する。軟化して潰れても板とナットの間に
介在して摩擦を仲介し、両者を接合可能な状態に昇温さ
せるのである。なおアルミニウム製被溶接物を超音波溶
接機で溶接すると、被溶接物が溶接機のホーンチップや
アンビルに固着する問題があったが、これはホーンチッ
プ、アンビルの加圧面を凹凸模様付きとし、その上に有
機物層として油を軽く塗るか、フィルムの形で載せて、
被溶接物をくわえさせる事により解決出来る。油やフィ
ルムが薄ければ、凹凸模様の滑り止め作用を保持して、
有機物により張り付きを防げる。However, it has been found that the projections on the lower surface of the nut, which have no value in resistance welding, work fine in ultrasonic welding. That is, since the nut is made of a harder material than the plate material, the protrusions on the lower surface crush the oxide film on the plate surface and soften it by frictional heat after scratching. Even if it is softened and crushed, it is interposed between the plate and the nut to mediate friction and heat the two so that they can be joined. In addition, when welding an aluminum welded object with an ultrasonic welding machine, there was a problem that the welded object was fixed to the horn tip or anvil of the welding machine, but this is the horn tip, the pressure surface of the anvil has an uneven pattern, Lightly apply oil as an organic layer on it, or put it in the form of a film,
It can be solved by holding the object to be welded. If the oil or film is thin, hold the anti-slip action of the uneven pattern,
Sticking can be prevented by organic substances.
【0008】[0008]
【実施例】図1にこの発明の実施状況を示す。図中、1
は超音波溶接機のホーン、2はホーンチップ(ツー
ル)、3はアンビル、4は部品としての突起付きアルミ
ニウム製六角ナット、5はアルミニウム板である。ナッ
ト4は図2,3に示すもので、外観は鋼製プロジェクシ
ョン・ナットに類似して、突起4aを3箇所に設けてい
る。この例の突起4aはナット側面の延長部分と、ナッ
ト下面から立上がった円錐形斜面とで構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the implementation of the present invention. 1 in the figure
Is a horn of an ultrasonic welding machine, 2 is a horn tip (tool), 3 is an anvil, 4 is a hexagonal nut made of aluminum with a protrusion as a component, and 5 is an aluminum plate. The nut 4 is shown in FIGS. 2 and 3, and the appearance thereof is similar to that of a steel projection nut, and projections 4a are provided at three positions. The protrusion 4a in this example is composed of an extension portion of the side surface of the nut and a conical inclined surface rising from the lower surface of the nut.
【0009】実験データは後述するが、図4にナット4
を溶着後、剥離したアルミニウム板5の表面を示す。鎖
線でナット4の溶着位置を4´として示す。3箇の突起
4aの剥離痕6(凹み)がナット溶着位置4´から外へ
はみ出している。これは突起4aを付けたナットの下面
が溶接時、外方へ広がったためである。剥離痕6が常に
同等に溶着すると限らず、実験では3回に1回は1個の
剥離痕6が単に凹みだけで、溶着後剥離した粗面ではな
かった。もっとも、その後の実験で、ナット下面の突起
4aをやゝ小形にして6箇に増やすと、常に全部の突起
位置で溶着することが分った。The experimental data will be described later, but the nut 4 is shown in FIG.
The surface of the aluminum plate 5 peeled off after welding is shown. The welding position of the nut 4 is indicated by a chain line as 4 '. The peeling marks 6 (recesses) on the three protrusions 4a are projected from the nut welding position 4'to the outside. This is because the lower surface of the nut with the projection 4a spreads outward during welding. It is not always the case that the peeling marks 6 are always welded equally, and in the experiment, one peeling mark 6 was merely a depression once every three times, and it was not a rough surface peeled after welding. However, in subsequent experiments, it was found that if the projections 4a on the lower surface of the nut were made slightly smaller and the number was increased to 6, the welding would always occur at all projection positions.
【0010】図4の突起部剥離痕6相互の間に平面溶着
部剥離痕7がある。どういう訳か突起部剥離痕6から少
し離れているが、確かにいったん溶着して剥れた状態の
粗面になっている。図は略したがナット側剥離面も同様
である。なお平面溶着部剥離痕7の面積は実験の都度変
動があった。ナット下面の突起4aと異なる形の突起4
bを図5,6に示す。この突起4bはナット4の下面か
ら円弧状山脈のように盛り上っている。溶接結果は図4
の突起部剥離痕6がやゝ内側へ移って細長くなり、平面
溶着部剥離痕7が狭くなった以外はほゞ同様である。円
弧状突起4bを、分断しない全円形にしたものは不可
で、やはり突起は大き過ぎない方がよいようである。も
っとも溶接条件によるかも知れない。Between the peeling traces 6 of the protrusions of FIG. For some reason, it is slightly separated from the protrusion peeling mark 6, but it is certainly a rough surface that is once welded and peeled off. Although the illustration is omitted, the peeling surface on the nut side is the same. The area of the peeled mark 7 on the flat welded portion varied from experiment to experiment. A protrusion 4 having a different shape from the protrusion 4a on the bottom surface of the nut
b is shown in FIGS. The protrusion 4b rises from the lower surface of the nut 4 like an arcuate mountain range. The welding result is shown in Fig. 4.
This is almost the same as the above except that the peeling trace 6 of the protruding portion is slightly moved to the inner side and becomes elongated, and the peeling trace 7 of the flat weld portion is narrowed. It is not possible to make the arc-shaped projection 4b into a completely circular shape that is not divided, and it seems that the projection should not be too large. It may depend on the welding conditions.
【0011】図1のホーンチップ2及びアンビル3は熱
処理された高速度鋼や超硬合金等で製作されているが、
これ等はアルミニウム製品をくわえて溶接した後、製品
を取出そうとしても製品が固着していて取れにくい場合
が少くない。これをチップスティックとか、張り付き現
象等と称する。これを防止するためには、先にアルミニ
ウム板同士の溶接に本発明者等が開発した方法で、ホー
ンチップ2やアンビル3の加圧面に図7のような滑り止
め凹凸模様を設け、その凸部が被溶接物に食い込んで相
対移動による摩擦を抑えると共に、上記食い込みを妨げ
ない程度に油を塗るかフィルムを載せた有機物層の介在
により張り付き現象を防ぐ。図8はその凹凸模様8の一
例の断面拡大図で、その表面に油を塗った有機物層9を
実線で示し、鎖線でフィルムを載せた有機物層10を示
す。張り付き現象防止に最良の有機物層9の油は大豆
油、プレス油で、有機物層10のフィルムはセロハンテ
ープであった。The horn tip 2 and the anvil 3 shown in FIG. 1 are made of heat-treated high-speed steel or cemented carbide.
These are often the case where the product is stuck and difficult to remove even if an aluminum product is held and welded and then the product is taken out. This is called a chip stick or a sticking phenomenon. In order to prevent this, the non-slip concavo-convex pattern as shown in FIG. 7 is provided on the pressing surface of the horn tip 2 or the anvil 3 by the method previously developed by the present inventors for welding aluminum plates to each other, and the projections The part cuts into the object to be welded to suppress the friction due to the relative movement, and the sticking phenomenon is prevented by applying oil or interposing an organic material layer on which a film is placed so as not to hinder the above-mentioned cutting. FIG. 8 is an enlarged cross-sectional view of an example of the concavo-convex pattern 8, in which the organic layer 9 coated with oil is shown by a solid line and the chain is shown by an organic layer 10 on which a film is placed. The best oil for preventing the sticking phenomenon was soybean oil and press oil, and the film for the organic material layer 10 was cellophane tape.
【0012】実験はアメリカ製超音波溶接機(15KH
Z、4500W)により種々行なったが、代表的なもの
を次に記す。ナットは図2,3の六角ナットで、材質は
JIS A6061のT−6熱処理又は加工硬化させた
もの、寸法は対角長さ15mm、高さ6mmで、突起4
aの高さ1.5mである。アルミニウム板の材質はJI
S A5182P−0、板厚2.0mm。溶接条件は加
圧力40PSI(2.8kg/cm2 )、接合(振動)
時間2.0秒は共通で、使用電力だけ2500Wが4
個、2300Wが3個、2200Wが5個、2000W
が2個と違わせて、14個の溶着試験片を作り、トルク
試験と剥離試験を行った。トルク試験はナットを板面に
対し捩じ切り、剥離試験はナットを垂直に剥がし取る。The experiment was conducted with an American ultrasonic welding machine (15 KH
Z, 4500 W), but a typical one is described below. The nut is the hexagonal nut shown in FIGS. 2 and 3, and the material is JIS A6061 T-6 heat treated or work hardened. The dimensions are diagonal length 15 mm, height 6 mm, and protrusion 4
The height of a is 1.5 m. The material of the aluminum plate is JI
S A5182P-0, plate thickness 2.0 mm. Welding conditions are applied pressure of 40 PSI (2.8 kg / cm 2 ) and joining (vibration)
The time of 2.0 seconds is common and only 2500W is used.
3 pieces of 2300W, 5 pieces of 2200W, 2000W
14 welding test pieces were prepared, and the torque test and the peeling test were performed. In the torque test, the nut is twisted off the plate surface, and in the peeling test, the nut is peeled off vertically.
【0013】トルク試験結果を表1に示す。The results of the torque test are shown in Table 1.
【表1】 [Table 1]
【0014】剥離試験結果を表2に示す。The results of the peel test are shown in Table 2.
【表2】 [Table 2]
【0015】上記試験結果で強度の弱いものは、3個の
突起部剥離痕6のうち1個が溶着していないものであ
る。もっとも平面溶着部剥離痕7の溶着面積にも変動が
あるので、上記のように強度のばらつきが大きくなった
と思われる。不慣れのため溶接条件の選定に問題があっ
たかも知れない。前述のように図2,3のナットの突起
4aを角部3箇所でなく、角部6箇所全部にやゝ小さく
設けた試験用ナットを少し試作して溶接試験したとこ
ろ、いずれも安定した強度と剥離面を示したが、そのデ
ータはこの出願に間に合わなかった。以上を総合して、
この発明のアルミニウム等の板面への部品溶着方法は、
今後十分、実用可能であると判断できる。なおこの発明
の実施態様は上記実施例に限らず、多様に変化、応用し
得ること言うまでもなく、板材はジルコニウムその他の
酸化皮膜が付く板、部品は超音波溶接可能な異種材料も
可で、ナット、ボルトその他類似部品に応用可能であ
る。In the above test results, one having weak strength is one in which three of the protrusion peeling marks 6 are not welded. However, since the welding area of the peeled trace 7 of the flat welded portion also varies, it is considered that the variation in strength has increased as described above. There may have been a problem in the selection of welding conditions due to inexperience. As described above, when a few test nuts were made by slightly welding the nut projections 4a shown in FIGS. 2 and 3 at all six corners instead of the three corners, the welding test showed that the strength was stable. The peeled surface was shown, but the data was not in time for this application. Summing up the above,
The method of welding parts to a plate surface of aluminum or the like of the present invention is
It can be judged that it is practically possible in the future. The embodiments of the present invention are not limited to the above-mentioned embodiments, and needless to say, can be variously modified and applied, and the plate material can be a plate with zirconium or other oxide film, and the parts can be different materials capable of ultrasonic welding. It can be applied to bolts, bolts and similar parts.
【0016】[0016]
【発明の効果】この発明は溶融溶接でも抵抗溶接でも、
従来工業的には不可能に近かったアルミニウム板への部
品の溶着を、超音波溶接の採用により初めて可能にし
た。突起付き部品は軟鋼のプロジェクション溶接用ナッ
トで周知であるが、それは軟鋼ナットに限られ、アルミ
ニウム製の突起付きナットを発想する技術者はいなかっ
た。しかしこの発明はナットの突起によって超音波溶接
によるアルミニウム板とナットの溶着が可能なことを実
証した。材質的にアルミニウム板より硬い部品の突起
が、まず板面の酸化皮膜を破壊する効果が大きいと思わ
れるが、抵抗溶接では働かない突起が、超音波溶接では
予想外の働きをする。またこの発明は超音波溶接機のホ
ーンチップやアンビルに固着しやすいアルミニウム製品
を、固着させないで済む簡単な方法も開示した。この発
明は出発点に過ぎず、今後、板面への部品溶着手段とし
て、超音波溶接は大きく伸びると思われる。INDUSTRIAL APPLICABILITY The present invention can be applied to both fusion welding and resistance welding.
For the first time, it was possible to weld parts to aluminum plates, which was nearly impossible in the industry, by adopting ultrasonic welding. Protruded parts are well known for mild steel projection welding nuts, but they are limited to mild steel nuts, and no engineer was conceived of an aluminum prominent nut. However, this invention has demonstrated that the projection of the nut enables welding of the aluminum plate and the nut by ultrasonic welding. It is thought that the projections of parts that are harder than aluminum plates have a large effect of destroying the oxide film on the plate surface, but the projections that do not work in resistance welding work unexpectedly in ultrasonic welding. The present invention also disclosed a simple method for avoiding the fixing of an aluminum product that is easily fixed to the horn tip or anvil of an ultrasonic welding machine. This invention is only a starting point, and it is expected that ultrasonic welding will greatly expand in the future as a means for welding parts to the plate surface.
【図1】この発明の実施装置の一例の説明図。FIG. 1 is an explanatory diagram of an example of an implementation device of the present invention.
【図2】突起付きナットの一実施例縦断面図。FIG. 2 is a vertical sectional view of an embodiment of a nut with a protrusion.
【図3】図2の下面図。FIG. 3 is a bottom view of FIG.
【図4】溶着ナット剥離痕の平面図。FIG. 4 is a plan view of a welding nut peeling trace.
【図5】突起付きナットの他の実施例縦断面図。FIG. 5 is a vertical sectional view of another embodiment of the nut with protrusion.
【図6】図5の下面図。6 is a bottom view of FIG.
【図7】滑り止め凹凸模様の一例の平面図。FIG. 7 is a plan view of an example of a non-slip uneven pattern.
【図8】図7の拡大断面図。8 is an enlarged sectional view of FIG.
4 ナット(部品) 4a 突起 4b 突起 5 アルミニウム板 4 Nuts (parts) 4a Protrusion 4b Protrusion 5 Aluminum plate
フロントページの続き (72)発明者 松岡 久雄 東京都千代田区外神田二丁目15番5号 株 式会社ナカタニ内 (72)発明者 須栗 宏 東京都千代田区外神田二丁目15番5号 株 式会社ナカタニ内 (72)発明者 神武 均 東京都千代田区外神田二丁目15番5号 株 式会社ナカタニ内Front page continued (72) Inventor Hisao Matsuoka 2-15-5 Sotokanda, Chiyoda-ku, Tokyo Nakakatani Co., Ltd. (72) Inventor Hiroshi Suguri 2-15-5 Sotokanda, Chiyoda-ku, Tokyo Stock company In Nakatani (72) Inventor Hitoshi Kamtake 2-15-5 Sotokanda, Chiyoda-ku, Tokyo Inside Nakatani Co., Ltd.
Claims (2)
同材質又は異質の部品を溶着する方法であって、 部品の溶着予定面に先の尖った突起を複数個設けてお
き、それら突起を上記板面に当てゝ超音波溶接機のホー
ンチップ、アンビル間に挟み、上記突起がほゞ完全に潰
れるように溶接機の加圧力、電力、振動時間を選んで溶
接することを特徴とするアルミニウム等の板面への部品
溶着方法。1. A method for welding parts of the same material or different materials to a plate surface such as aluminum having an oxide film, wherein a plurality of pointed projections are provided on the planned welding surface of the parts, and these projections are provided. Aluminium, which is applied to the plate surface, sandwiched between the horn tip of an ultrasonic welding machine and an anvil, and the welding pressure, power, and vibration time of the welding machine are selected so that the projections are almost completely crushed. How to weld parts to plate surface.
様付きであり、 その凸面が被溶接物に食い込むのを妨げない厚みで、上
記加圧面に有機物層を塗るか載せて上記板と部品を挟む
ことを特徴とするアルミニウム等の板面への部品溶着方
法。2. The welding method according to claim 1, wherein the pressing surface of the horn tip and the anvil has a non-slip uneven pattern, and the convex surface has a thickness that does not prevent it from biting into the object to be welded. A method for welding a component to a plate surface of aluminum or the like, which comprises coating or placing a layer and sandwiching the plate and the component.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5300823A JP2782495B2 (en) | 1993-11-08 | 1993-11-08 | Welding method of metal work |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5300823A JP2782495B2 (en) | 1993-11-08 | 1993-11-08 | Welding method of metal work |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07124762A true JPH07124762A (en) | 1995-05-16 |
JP2782495B2 JP2782495B2 (en) | 1998-07-30 |
Family
ID=17889539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP5300823A Expired - Fee Related JP2782495B2 (en) | 1993-11-08 | 1993-11-08 | Welding method of metal work |
Country Status (1)
Country | Link |
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JP (1) | JP2782495B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001303108A (en) * | 2000-02-07 | 2001-10-31 | Spraying Syst Co | Manufacturing method of metal body having closed seal |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50144651A (en) * | 1974-05-13 | 1975-11-20 | ||
JPS56142890U (en) * | 1980-03-21 | 1981-10-28 | ||
JPH0447880U (en) * | 1990-08-29 | 1992-04-23 |
-
1993
- 1993-11-08 JP JP5300823A patent/JP2782495B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50144651A (en) * | 1974-05-13 | 1975-11-20 | ||
JPS56142890U (en) * | 1980-03-21 | 1981-10-28 | ||
JPH0447880U (en) * | 1990-08-29 | 1992-04-23 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001303108A (en) * | 2000-02-07 | 2001-10-31 | Spraying Syst Co | Manufacturing method of metal body having closed seal |
Also Published As
Publication number | Publication date |
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JP2782495B2 (en) | 1998-07-30 |
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