JPH03294100A - End tab made of refactory material for welding and its manufacture - Google Patents
End tab made of refactory material for welding and its manufactureInfo
- Publication number
- JPH03294100A JPH03294100A JP9431290A JP9431290A JPH03294100A JP H03294100 A JPH03294100 A JP H03294100A JP 9431290 A JP9431290 A JP 9431290A JP 9431290 A JP9431290 A JP 9431290A JP H03294100 A JPH03294100 A JP H03294100A
- Authority
- JP
- Japan
- Prior art keywords
- end tab
- molten metal
- weir
- metal receiving
- welding
- 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 20
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 title claims description 6
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 239000011819 refractory material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 5
- 239000010953 base metal Substances 0.000 description 8
- 230000035515 penetration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、溶接用耐火材製エンドタブとその製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a refractory end tab for welding and a method for manufacturing the same.
（従来の技術及び解決しようとする課題）従来より、溶
接用の耐火材製エンドタブとしては種々の形状のものが
使用されている。エンドタブの使用面が堰と溶融金属受
は面を有する形状の場合、エンドタブの片面のみにかシ
る使用面を形成したタイプと、エンドタブの表裏面の双
方に使用面が形成されているタイプとに大別される。(Prior Art and Problems to Be Solved) Conventionally, end tabs made of refractory materials for welding have been used in various shapes. If the usable surface of the end tab is a weir and the molten metal receiver has a surface, there are two types: one type in which the usable surface is formed on only one side of the end tab, and the type in which the usable surface is formed on both the front and back sides of the end tab. It is broadly divided into
後者のタイプの場合、殆どのエンドタブは、表裏面の使
用面において堰と溶融金属受は面が対称的に、すなわち
、鏡面対称にて形成されている。In the case of the latter type, in most end tabs, the weir and the molten metal receiver are formed symmetrically, that is, mirror-symmetrically, on the front and back use surfaces.
しかしながら、このような形状のエンドタブを成形→焼
成によって製造する場合、成形段階においてプレス成形
するに際し、当然ながら金型もそのような形状のものを
使用するため、金型に挿入した原料粉末が金型内におい
て均一に分布しないという問題が生じる。However, when producing end tabs with this shape by molding and firing, a mold of such shape is naturally used during press molding in the molding stage, so the raw material powder inserted into the mold is A problem arises in that it is not evenly distributed within the mold.
そのため、従来は、かＳる形状の金型内に原料粉末を均
一に分布させるための特別の装置が必要であった。しか
し、そのような装置を使用しても。Therefore, conventionally, a special device was required to uniformly distribute the raw material powder inside the S-shaped mold. But even with such a device.
全く均一に原料粉末を分布させることは困難であり、焼
成により得られる製品に様々な欠陥が発生することが多
かった。例えば、強度が不充分であるためにエンドタブ
の厚さを大きくしなければならなかったり、或いはエン
ドタブの端部や堰の端部が欠は落ちたりする等の問題が
あった。It is difficult to distribute the raw material powder completely uniformly, and various defects often occur in the products obtained by firing. For example, there have been problems such as the end tab having to be made thicker due to insufficient strength, or the end of the end tab or the end of the weir being chipped.
本発明は、上記従来技術の問題点を解決し、充分な強度
を有すると共に、欠陥のない高品質の溶接用耐火材製エ
ンドタブが安価に得られる技術を提供することを目的と
するものである。It is an object of the present invention to solve the problems of the prior art described above, and to provide a technology that can inexpensively obtain a high-quality refractory material end tab for welding that has sufficient strength and is free from defects. .
（課題を解決するための手段）
前記課題を解決するため１本発明者は、前述のエンドタ
ブの製造面における原料粉末の不均一性を解消できる方
策について鋭意研究を重ねた結果、ここに本発明をなし
たものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present inventor has conducted extensive research into ways to eliminate the non-uniformity of the raw material powder in the production of the aforementioned end tabs, and has hereby developed the present invention. This is what was done.
すなわち、本発明は、耐火材製エンドタブを製造するに
際し、該エンドタブの表裏面の双方に堰と溶融金属受は
面とが互い違いに配置できる形状の金型を使用し、この
金型に原料粉末を単純挿入することにより、プレス成形
時の成形圧力を金型全体にわたって均一化し、耐火材の
分布を均一にすることを特徴とする溶接用耐火材製エン
ドタブの製造方法を要旨とするものである。That is, when manufacturing an end tab made of refractory material, the present invention uses a mold having a shape that allows the weir and the molten metal receiver to be arranged alternately on both the front and back surfaces of the end tab, and the raw material powder is placed in this mold. The gist of the present invention is to provide a method for manufacturing a refractory end tab for welding, which is characterized in that the molding pressure during press molding is made uniform over the entire mold by simply inserting the refractory material, and the refractory material is evenly distributed. .
また、か）る溶接用耐火材製エンドタブは、堰と溶融金
属受は面とを有する耐火材製エンドタブにおいて、表裏
面の双方に、堰と溶融金属受は面とが互い違いに配置さ
れている使用面を備えていることを特徴とするものであ
る。In addition, in the refractory end tab for welding, the weir and the molten metal receiver are arranged alternately on both the front and back surfaces of the refractory end tab that has a weir and a molten metal receiver. It is characterized by having a usable surface.
以下に本発明を更に詳述する。The present invention will be explained in further detail below.
（実施例）
第１図は溶接用耐火材製エンドタブの一例を示しており
、（ａ）は使用面の表面、（ｂ）は裏面を示し。(Example) Fig. 1 shows an example of an end tab made of refractory material for welding, in which (a) shows the front surface for use, and (b) shows the back surface.
（Ｃ）は断面図である。(C) is a sectional view.
エンドタブ１は、堰２と溶融金属受は面３からなる使用
面を有しており、（ｅ）に図示の如く表面の堰２□及び
溶融金属受は面３と裏面の堰２１′及び溶融金属受は面
３′がそれぞれ互い違いに配置されている。The end tab 1 has a usable surface consisting of a weir 2 and a molten metal receiver surface 3, and as shown in FIG. The surfaces 3' of the metal receivers are arranged alternately.
このような形状にする理由は、プレス成形工程時の成形
圧力を均一化するためである。The reason for such a shape is to equalize the molding pressure during the press molding process.
すなわち、従来のエンドタブは、第８図の断面図に示す
ように、堰及び溶融金属受は面を有するものの、それら
は表面と裏面とにおいて鏡面対称に形成されていた。こ
のため、金型内に原料粉末を単純挿入してプレス成形す
ると、成形圧力が不均一となり、したがって、金型内で
原料粉末が不均一な分布状態で成形されることになる。That is, in the conventional end tab, as shown in the cross-sectional view of FIG. 8, although the weir and the molten metal receiver have surfaces, they are formed in mirror symmetry on the front and back surfaces. For this reason, if raw material powder is simply inserted into a mold and press-molded, the molding pressure will be non-uniform, and therefore the raw material powder will be molded in a non-uniform distribution state within the mold.
これを防止するため、従来は、金型内への原料粉末挿入
に際し、使用面の形状に相当する金型の凹凸部の大きさ
等に応じて、原料供給量を変化させ、全体に均一に分布
させる特別の手段（例、金型振動装置）が必要であった
。しかし、このように細心の注意を払って原料粉末を金
型内に挿入しても、元来プレス成形圧力が不均一に作用
するような形状であるため、完全に均一化することは困
難であった０例えば、第８図の形状のエンドタブの場合
、堰２の部位には大きな成形圧力が作用し、溶融金属受
は面３の部位には小さな成形圧力が作用するので、プレ
ス成形時には、特に堰と溶融金属受は面との境目で一定
しない圧力が作用すると共に、原料粉末が堰の部分から
溶融金属受は面へ若干移動する傾向になり、境目での成
形圧力が不充分となるため、各部位での成形後の密度が
異なっている。To prevent this, conventionally, when inserting the raw material powder into the mold, the amount of raw material supplied was varied depending on the size of the uneven part of the mold corresponding to the shape of the surface to be used, so that the amount of raw material supplied was uniform throughout the mold. Special means of distribution (eg, mold vibrator) were required. However, even if the raw material powder is inserted into the mold with great care, it is difficult to make it completely uniform because the shape of the raw material powder is such that the press molding pressure acts unevenly. For example, in the case of an end tab with the shape shown in Fig. 8, a large forming pressure acts on the weir 2 part, and a small forming pressure acts on the molten metal receiver on the surface 3 part, so during press forming, In particular, uneven pressure acts on the boundary between the weir and the molten metal receiver, and the raw material powder tends to move slightly from the weir to the surface of the molten metal receiver, resulting in insufficient forming pressure at the boundary. Therefore, the density after molding differs in each part.
一方、本発明においては、金型を、エンドタブの表裏面
の双方に堰と溶融金属受は面とが互い違いに配置できる
形状に設計したため、エンドタブのどの部位においても
成形圧力を殆ど均一に与えることかできるので、堰、溶
融金属受は面並びにそれらの境目のいずれの部位も実質
的に同じ密度で成形される。したがって、金型への原料
粉末挿入も単純に、すなわち、原料供給量を変化させて
全体に均一に分布させる特別の手段を使用することなく
、行えば足りる０例えば、金型の一箇所に原料粉末を挿
入するだけで良く、各部位におおよそ均一に分布される
ようにならす程度の配慮で良い。On the other hand, in the present invention, the mold is designed so that the weir and the molten metal receiver can be arranged alternately on both the front and back surfaces of the end tab, so that the molding pressure can be applied almost uniformly to all parts of the end tab. Therefore, the weir and molten metal receiver are formed with substantially the same density on both the surfaces and the boundaries between them. Therefore, it is sufficient to simply insert the raw material powder into the mold, that is, without using special means to change the raw material supply amount and distribute it uniformly throughout the mold. It is sufficient to simply insert the powder, and care is sufficient to ensure that it is distributed approximately uniformly in each region.
なお、エンドタブの製造法としては、上記金型設計及び
原料粉末挿入の点を除き、通常の工程及び条件で良い。Note that the end tab may be manufactured using normal steps and conditions, except for the above-mentioned mold design and insertion of raw material powder.
一般的には、原料配合→造粒→金型への原料粉末挿入→
ブレス成形→乾燥→焼成の工程である。しかし、原料と
しては、強度、耐熱性、耐熱衝撃性等の点より、Ａ ｆ
ｉ、ｏお＝５０〜７０ｕｔ％、５ｉＯｉ ： ３５〜５
０ｗｔ％を主成分とし、その他をＭｇＯ−に、０−Ｆｅ
、Ｏ，・ＣａＯ： １％以下に規制した組成のものが望
ましい。Generally, raw material blending → granulation → inserting raw material powder into mold →
The process is breath molding → drying → firing. However, from the viewpoint of strength, heat resistance, thermal shock resistance, etc., A f
i, o=50~70ut%, 5iOi: 35~5
0wt% is the main component, the others are MgO-, 0-Fe
, O, ·CaO: It is desirable that the composition be regulated to 1% or less.
このように、本発明法により製造される溶接用耐火材製
エンドタブの形状は、表裏面の双方に。In this way, the shape of the refractory material end tab for welding manufactured by the method of the present invention is the same on both the front and back surfaces.
堰と溶融金属受は面とが互い違いに配置されている使用
面を備えている限り、形状、厚さ、高さ等々において１
種々の変更が可能である。以下にその一例を示す。Weirs and molten metal receivers are the same in shape, thickness, height, etc., as long as they have working surfaces that are arranged alternately.
Various modifications are possible. An example is shown below.
変１銖よ
本例は、第１図に示すように、溶融金属受は面３にルー
トフェース４を形成した形状である。In this example, as shown in FIG. 1, the molten metal receiver has a shape in which a root face 4 is formed on the surface 3.
従来、母材の開先加工は、ＪＡＳＳ６や鉄骨工事技術指
針等で指導されているとおり、ルートフェースを２■取
ることが奨励されている（第２図参照）。これは、端部
の初層、特にスタート部はバックステップ法を用いて充
分にわかし、溶は込み不足を防止するためである。Conventionally, when preparing a bevel for the base material, it has been recommended to take a 2-inch root face, as instructed by JASS6 and Steel Construction Technical Guidelines (see Figure 2). This is because the initial layer at the end, especially the start part, is thoroughly softened using the back step method to prevent insufficient penetration.
従来のエンドタブは、ルートフェースが取られていない
ので、第４＠に示す毎く斜線部分の損傷が大きい。すな
わち、溶接後にエンドタブ１を取り外す作業は、第３図
に示す如くエンドタブの上部から剥がす手順が通常であ
り、その際、従来のエンドタブでは、第４図に示す斜線
部分に応力が働き、その部分が欠は易いことと相俟って
、損傷されるためである。Since the root face of the conventional end tab is not removed, the shaded area as shown in the 4th @ is severely damaged. In other words, the normal procedure for removing the end tab 1 after welding is to peel it off from the top of the end tab as shown in Fig. 3. At that time, with conventional end tabs, stress acts on the shaded area shown in Fig. 4, and that area This is because they are easily damaged and are easily damaged.
仮にルートフェースを取った場合、従来のエンドタブの
製造法では、堰と溶融金属受は面との境目での成形圧力
が充分でないため、角が欠けてしまい、溶接欠陥を発生
するという問題があり、そのような形状を採用できない
。If the root face is removed, there is a problem with the conventional manufacturing method of end tabs, where the forming pressure at the boundary between the weir and the molten metal receiver is not sufficient, resulting in the corners being chipped and welding defects. , such a shape cannot be adopted.
一方、本発明によれば、角の部位でも充分に成形される
ので、エンドタブを如何なる形状にも設計でき、ルート
フェース部４を形成した形状を採用できる。したがって
、第５図に示すように、エンドタブ１として、そのルー
トフェース部４が母材のルートフェースに２ｍｍ程度か
ぶる寸法のものを用いるだけで、初層溶接のスタート部
で母材の溶は込みを充分得ることができる。On the other hand, according to the present invention, even the corner portions can be sufficiently formed, so that the end tab can be designed in any shape, and the shape in which the root face portion 4 is formed can be adopted. Therefore, as shown in Fig. 5, by simply using an end tab 1 whose root face portion 4 overlaps the root face of the base metal by about 2 mm, penetration into the base metal at the starting point of the first layer weld can be achieved. You can get enough.
しかも、上述のように母材開先面にルートフェースを取
っていない場合（第６図参照）でも、同様にして初層溶
接のスタート部で母材の溶は込みを充分得ることができ
ることは明らかである。Moreover, even if the root face is not formed on the base metal groove surface as described above (see Figure 6), it is possible to obtain sufficient penetration of the base metal at the starting point of the first layer welding in the same way. it is obvious.
髪展■又
本例は、第１図に示すように、溶融金属受は面側の基端
部をテーパー状に形成した形状である。In addition, in this example, as shown in FIG. 1, the molten metal receiver has a tapered base end on the surface side.
このような形状にすると、変形例１で説明したのと同様
の理由により、母材の溶は込みが充分得られる。更には
、第５図に示す如く、バックステップ法による母材の溶
は込み時にアークによりエンドタブ部分が殆ど損傷しな
いので、溶接後のエンドタブの剥がしが極めて容易とな
り、ビード面上に耐火材が残存する恐れがない。なお、
テーパーの角度は適宜法めることができる。With such a shape, sufficient melt penetration of the base material can be obtained for the same reason as explained in Modification 1. Furthermore, as shown in Fig. 5, the end tab part is hardly damaged by the arc when the base metal is melted by the back step method, so it is extremely easy to peel off the end tab after welding, and the refractory material remains on the bead surface. There is no fear of it happening. In addition,
The angle of the taper can be determined as appropriate.
炎症■立
本例は、第７図に示すように、従来のエンドタブよりも
薄くした場合である。This example shows the case where the end tab is made thinner than the conventional end tab, as shown in FIG.
前述のとおり、本発明によれば、エンドタブ全体が充分
な成形圧力によって成形され、焼成されているので、充
分な強度を有するので、エンドタブの厚さを薄くするこ
とができ、コストダウンの効果も得られる。例えば、溶
融金属受は面の厚さ（１）が１６＋ｕ＋で一定とした場
合、従来のエンドタブでは、全体の厚さ（Ｔ）は余盛高
さ（表裏面の各堰の高さ）４ｍｍを加えると２４ｍ１ｌ
＋必要であるのに対し、本発明のエンドタブは１６ｍｍ
＋４ｍｍ＝２０Ｈに薄くでき、且つ強度等の問題がない
。As mentioned above, according to the present invention, the entire end tab is molded and fired with sufficient molding pressure, so it has sufficient strength, so the thickness of the end tab can be reduced, and the cost can be reduced. can get. For example, if the surface thickness (1) of the molten metal receiver is constant at 16+u+, then in the conventional end tab, the overall thickness (T) is the height of the excess (the height of each weir on the front and back surfaces) of 4 mm. Add 24ml/l
+ required, whereas the end tab of the present invention is 16 mm
It can be made as thin as +4mm=20H, and there are no problems with strength, etc.
このように、本発明では溶融金属受は面の厚さ（１）に
対するタブ全体の厚さ（Ｔ）がｔ／Ｔ≦２０／１６の如
く薄くできる。As described above, in the present invention, the molten metal receiver can be made thin such that the total thickness (T) of the tab relative to the surface thickness (1) satisfies t/T≦20/16.
勿論１本発明においては、エンドタブの形状は、上述の
形状のもののみに限定されないことは云うまでもない。Of course, in the present invention, the shape of the end tab is not limited to the above-described shape.
（発明の効果）
以上説明したように、本発明によれば、充分な強度を有
すると共に、欠陥のない高品質の溶接用耐火材製エンド
タブを安価に提供できる。(Effects of the Invention) As described above, according to the present invention, a high-quality end tab made of a refractory material for welding that has sufficient strength and is free from defects can be provided at a low cost.
第１図は本発明のエンドタブの一例を示す図で、（ａ）
は表面の平面図、（ｂ）は裏面の平面図、（Ｃ）は断面
図であり、
第２図は母材の開先面（ルートフェース２ ｍｍ）を示
す断面図、
第３図は溶接後にエンドタブを取り外す要領を示す説明
図。
第４図は従来のエンドタブの損傷箇所を示す回、第５図
は母材にエンドタブを取付けた状態を示す説明図、
第６図は母材の開先面（ルートフェースなし）を示す断
面図、
第７図は本発明のエンドタブの形状、寸法（ｍ−）を説
明する断面図、
第８図は従来のエンドタブの形状、寸法（＋＋＋ｍ）を
説明する断面図である。
１・・・エンドタブ、２．２２．２．′・・・堰、３・
・・溶融金属受は面、４・・・ルートフェース部、５・
・・母材、６・・・裏当材。FIG. 1 is a diagram showing an example of the end tab of the present invention, (a)
is a plan view of the front surface, (b) is a plan view of the back surface, and (C) is a cross-sectional view. Figure 2 is a cross-sectional view showing the groove surface of the base metal (root face 2 mm), and Figure 3 is a welding surface. An explanatory diagram showing how to remove the end tab later. Figure 4 shows the damaged parts of the conventional end tab, Figure 5 is an explanatory diagram showing the state where the end tab is attached to the base metal, and Figure 6 is a sectional view showing the groove surface of the base metal (without root face). , FIG. 7 is a sectional view illustrating the shape and dimensions (m-) of the end tab of the present invention, and FIG. 8 is a sectional view illustrating the shape and dimensions (+++m) of a conventional end tab. 1... End tab, 2.22.2. '...Weir, 3.
...The molten metal receiver is a surface, 4...Root face part, 5.
...Base material, 6...Backing material.
Claims (6)
タブの表裏面の双方に堰と溶融金属受け面とが互い違い
に配置できる形状の金型を使用し、この金型に原料粉末
を単純挿入することにより、プレス成形時の成形圧力を
金型全体にわたって均一化し、耐火材の分布を均一にす
ることを特徴とする溶接用耐火材製エンドタブの製造方
法。(1) When manufacturing end tabs made of refractory material, a mold with a shape that allows weirs and molten metal receiving surfaces to be arranged alternately on both the front and back surfaces of the end tab is used, and the raw material powder is simply inserted into this mold. A method for manufacturing a refractory end tab for welding, characterized in that the forming pressure during press molding is made uniform over the entire mold, and the distribution of the refractory material is made uniform.
体の厚さ（Ｔ）がｔ／Ｔ≦２０／１６である請求項１に
記載の方法。(2) The method according to claim 1, wherein the thickness (T) of the entire tab relative to the thickness (t) of the molten metal receiving surface satisfies t/T≦20/16.
ブにおいて、表裏面の双方に、堰と溶融金属受け面とが
互い違いに配置されている使用面を備えていることを特
徴とする溶接用耐火材製エンドタブ。(3) A refractory end tab having a weir and a molten metal receiving surface, the welding characterized by having use surfaces on both the front and back surfaces in which the weir and the molten metal receiving surface are alternately arranged. End tab made of fireproof material.
請求項３に記載の溶接用耐火材製エンドタブ。(4) The end tab made of a refractory material for welding according to claim 3, wherein the end tab is provided with a root face.
側にテーパーが施されている請求項３に記載の溶接用耐
火材製エンドタブ。(5) The end tab made of a refractory material for welding according to claim 3, wherein the weir of the end tab is tapered on the molten metal receiving surface side.
体の厚さ（Ｔ）がｔ／Ｔ≦２０／１６である請求項３、
４又は５に記載の溶接用耐火材製エンドタブ。(6) Claim 3, wherein the thickness (T) of the entire tab with respect to the thickness (t) of the molten metal receiving surface satisfies t/T≦20/16;
The end tab made of a refractory material for welding according to 4 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431290A JPH03294100A (en) | 1990-04-10 | 1990-04-10 | End tab made of refactory material for welding and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431290A JPH03294100A (en) | 1990-04-10 | 1990-04-10 | End tab made of refactory material for welding and its manufacture |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26385796A Division JP2802304B2 (en) | 1996-09-13 | 1996-09-13 | End tab made of refractory material for welding and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03294100A true JPH03294100A (en) | 1991-12-25 |
Family
ID=14106760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9431290A Pending JPH03294100A (en) | 1990-04-10 | 1990-04-10 | End tab made of refactory material for welding and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03294100A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119398A (en) * | 1984-11-16 | 1986-06-06 | Sumikin Yousetsubou Kk | Welding end tab |
| JPS6229199U (en) * | 1985-08-08 | 1987-02-21 |
-
1990
- 1990-04-10 JP JP9431290A patent/JPH03294100A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119398A (en) * | 1984-11-16 | 1986-06-06 | Sumikin Yousetsubou Kk | Welding end tab |
| JPS6229199U (en) * | 1985-08-08 | 1987-02-21 |
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