JPH04274888A - Jointing method of sheet - Google Patents
Jointing method of sheetInfo
- Publication number
- JPH04274888A JPH04274888A JP5837891A JP5837891A JPH04274888A JP H04274888 A JPH04274888 A JP H04274888A JP 5837891 A JP5837891 A JP 5837891A JP 5837891 A JP5837891 A JP 5837891A JP H04274888 A JPH04274888 A JP H04274888A
- Authority
- JP
- Japan
- Prior art keywords
- electron beam
- welding
- beam welding
- alloy
- angle
- 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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 59
- 238000010894 electron beam technology Methods 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 10
- 229910019589 Cr—Fe Inorganic materials 0.000 claims abstract description 7
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 1
- 239000011324 bead Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000010953 base metal Substances 0.000 description 3
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は薄板の溶接方法に係り、
より詳しくは、表面張力の高い金属からなる薄板を電子
ビーム溶接する方法に関する。[Industrial Application Field] The present invention relates to a method of welding thin plates.
More specifically, the present invention relates to a method of electron beam welding a thin plate made of a metal with high surface tension.
【0002】0002
【従来の技術】従来、薄板の突合せ溶接に関しては、ア
ーク溶接をはじめ、TIG溶接、プラズマ溶接、レーザ
溶接及び電子ビーム溶接が行われているが、その基本的
思想はI型(シェヤー切断等で90°に加工された形状
)で突合せて溶接するが、このとき、極力板同士を近づ
けておくことが重要なポイントとなっており、そのため
にI型面をレーザ加工する等、極力突合せ面を近づける
工夫がなされてきた。[Prior Art] Conventionally, arc welding, TIG welding, plasma welding, laser welding, and electron beam welding have been used for butt welding of thin plates, but the basic idea is I type (Shear cutting, etc.). At this time, it is important to keep the plates as close as possible to each other, so the I-shaped surfaces are machined with a laser, etc. to make the butt surfaces as close as possible. Efforts have been made to bring it closer.
【0003】また、突合せ部を極力平板状況に近づける
ために、本発明者らは円筒形のパイプの溶接の場合に軸
方向からみた断面形状を楕円状にするなどの工夫を施し
てきたが、このような処理にも拘わらず、溶接部のビー
ドが溶接中に表面張力によって分離し、ビードを形成で
きないことが生じる場合やビード表面が凹む場合が生じ
た。[0003] Furthermore, in order to make the butt portion as close as possible to a flat plate situation, the present inventors have taken measures such as making the cross-sectional shape viewed from the axial direction elliptical when welding cylindrical pipes. Despite such treatment, there have been cases where the bead of the welded portion separates due to surface tension during welding, making it impossible to form the bead or causing the bead surface to become depressed.
【0004】0004
【発明が解しようとする課題】特に、ニチノール、イン
コネル(商品名)等の如く表面張力の高い金属で、薄板
になればなるほど、図1に示すI型面の突合せ状況が悪
いと、溶融池は表面張力によって両方の母材に引っ張ら
れて分離し、接合ができない状況が発生する。例えば、
薄板から円筒形のパイプを電子ビーム溶接により製作す
る場合、図1のように開先面を押さえる治具の距離を近
づけたり、図2に示すように溶接面が極力フラットにな
り易くする工夫(軸方向からみた断面形状が楕円状)を
検討してきた。しかし、このように細心の注意を払って
も電子ビーム溶接において溶融池が分離して接合できな
いことが発生した。[Problems to be Solved by the Invention] Particularly, as metals with high surface tension such as Nitinol and Inconel (trade name) are made thinner, if the butt condition of the I-shaped surfaces shown in Fig. 1 is poor, molten pools may occur. is pulled by both base materials due to surface tension and separates, resulting in a situation where bonding is impossible. for example,
When manufacturing a cylindrical pipe from a thin plate by electron beam welding, it is important to make the jig that presses the groove surface closer as shown in Figure 1, or to make the welding surface as flat as possible (as shown in Figure 2). The cross-sectional shape viewed from the axial direction is elliptical). However, even with such careful attention, the molten pool sometimes separates during electron beam welding, making it impossible to join.
【0005】そのため、開先面を図3に示すようにV型
に代えてI型に改良したが、このような場合でも、ミク
ロ的には板に隙間が生じているためか、溶融金属の表面
張力が強いためにビードが分離して接合できない状況が
発生した。[0005] Therefore, the groove surface was improved to an I-shape instead of a V-shape as shown in Fig. 3, but even in such a case, the molten metal could not be easily absorbed, probably due to microscopic gaps in the plate. Due to the strong surface tension, a situation occurred where the beads separated and could not be bonded.
【0006】本発明は、表面張力の高い金属からなる薄
板の電子ビーム溶接に関する上記従来技術の欠点を解消
して、ビードが分離することなく良好な接合部が得られ
る方法を提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a method that eliminates the above-mentioned drawbacks of the prior art regarding electron beam welding of thin plates made of metals with high surface tension, and that allows a good joint to be obtained without bead separation. That is.
【0007】[0007]
【課題を解決するための手段】上述の如く、電子ビーム
溶接中、表面張力によってビードが分離するのを前述の
ような方法で解決できない場合のあることが判明したが
、その原因としては、理論的にはゼロギャップでセット
できるものの、実質的にはギャップを生じていないため
か、溶接中に熱変形で溶接が進むにつれて板同士の間に
隙間が生じる、或いは溶融金属の表面張力が強くてビー
ドが分離しているのいずれが原因かは不明であるが、結
果的にビードが分離する現象が生じたためと考えられる
。[Means for Solving the Problems] As mentioned above, it has been found that during electron beam welding, the separation of beads due to surface tension may not be solved by the above-mentioned method. Although it can be set with zero gap, there is a gap between the plates as the welding progresses due to thermal deformation during welding, probably because there is no gap in reality, or because the surface tension of the molten metal is strong. Although it is unclear which of the factors is the cause of the bead separation, it is thought that the phenomenon of bead separation occurred as a result.
【0008】すなわち、溶接中に熱変形で溶接が進むに
つれて板同士の間に隙間が生じている場合のあることが
わかり、これは板を抑える拘束力を強化することで一部
分は解決できた。しかし、ギャップをできるだけなくし
、板を抑える拘束力を強化しても、溶融金属の表面張力
が強いためか、ビードが分離する現象は解消できなかっ
た。[0008] That is, it has been found that as the welding progresses due to thermal deformation during welding, gaps may be formed between the plates, and this can be partially resolved by strengthening the restraining force that holds the plates. However, even after eliminating the gap as much as possible and strengthening the restraining force that holds the plate in place, the phenomenon of bead separation could not be resolved, perhaps due to the strong surface tension of the molten metal.
【0009】そこで、本発明者らは、突合せ形状を図4
に示すように薄板の端部に角度θを付けた形状とし、そ
の後、突合せ部を抵抗スポットで部分的に接合して突合
せ部を固定した後、図5に示すような治具で固定し、電
子ビーム溶接したところ、良好な結果を得ることができ
、ここに本発明をなしたものである。[0009] Therefore, the inventors of the present invention determined the butt shape as shown in FIG.
As shown in Figure 5, the edge of the thin plate is shaped to have an angle θ, and then the abutting part is partially joined with a resistance spot to fix the abutting part, and then fixed with a jig as shown in Figure 5. When electron beam welding was performed, good results were obtained, and the present invention was made here.
【0010】すなわち、本発明は、Ni−Ti系合金か
らなる薄板を電子ビーム溶接するに際し、突合せ部を3
0°〜45°の角度を持って突合せできる形状に加工し
た後、該突合せ部を電子ビーム溶接することを特徴とす
るものである。That is, in the present invention, when electron beam welding a thin plate made of a Ni-Ti alloy, the butt portion is
It is characterized in that after processing into a shape that allows abutting at an angle of 0° to 45°, the abutting portion is welded with an electron beam.
【0011】また、他の本発明は、Ni−Cr−Fe系
合金からなる薄板を電子ビーム溶接するに際し、突合せ
部を30°〜60°の角度を持って突合せできる形状に
加工した後、該突合せ部を電子ビーム溶接することを特
徴とするものである。[0011] Another aspect of the present invention is that when electron beam welding a thin plate made of a Ni-Cr-Fe alloy, after processing the abutting portion into a shape that allows the butt to be abutted at an angle of 30° to 60°, It is characterized by electron beam welding of the butt portions.
【0012】以下に本発明を更に詳述する。The present invention will be explained in more detail below.
【0013】本発明は、要するに、Ni−Ti系合金、
Ni−Cr−Fe系合金等のように溶接時の表面張力が
高い金属からなる薄板を電子ビーム溶接する際に、突合
せ部の形状として材質に応じた適切な角度を持たせた形
状とし、この突合せ部を電子ビーム溶接するのである。[0013] In short, the present invention provides a Ni-Ti alloy,
When electron beam welding thin plates made of metals with high surface tension during welding, such as Ni-Cr-Fe alloys, the shape of the butt part is made with an appropriate angle depending on the material. The butt portions are welded using an electron beam.
【0014】Ni−Ti系合金としては、Ni:48〜
52%、Ti:48〜52%を主成分として含有する合
金であり、代表的な組成としてニチノール(商品名)が
挙げられる。また、Ni−Cr−Fe系合金としては、
Ni:72.0%以上、Cr:14〜17%、Fe:6
〜10%を主成分として含有する合金であり、代表的な
組成としてインコネル(商品名)が挙げられる。勿論、
主成分以外の元素としては、Ni−Ti系合金の場合は
Fe、Cu、Nb、Alなど、Ni−Cr−Fe系合金
の場合はC、Mn、Si、Ti、Alなどが適宜含有し
得る。[0014] As the Ni-Ti alloy, Ni: 48~
Ti: 48-52% as a main component, and Nitinol (trade name) is a typical composition. In addition, as a Ni-Cr-Fe alloy,
Ni: 72.0% or more, Cr: 14-17%, Fe: 6
It is an alloy containing ~10% as a main component, and Inconel (trade name) is a typical composition. Of course,
Elements other than the main components may include Fe, Cu, Nb, Al, etc. in the case of Ni-Ti alloys, and C, Mn, Si, Ti, Al, etc. in the case of Ni-Cr-Fe alloys. .
【0015】本発明で云う薄板とは、通常、板厚が1.
0mm以下のものである。[0015] The thin plate referred to in the present invention usually has a thickness of 1.
The diameter is 0 mm or less.
【0016】突合せ部は、レーザ加工等により、図4に
示すように角度θを持った形状に加工する。Ni−Ti
系合金の場合、端部角度θが45゜を超えると溶接結果
が劣るので、45゜以下とする必要がある。また、Ni
−Cr−Fe系合金の場合、端部角度θが60゜を超え
ると溶接結果が劣るので、60゜以下とする必要がある
。しかし、いずれの合金系の場合も、15゜のように小
さい角度に加工するのは製作困難であるので、下限は3
0゜とする。The abutting portion is processed by laser processing or the like into a shape having an angle θ as shown in FIG. Ni-Ti
In the case of alloys, if the end angle θ exceeds 45°, the welding result will be poor, so it is necessary to keep it at 45° or less. Also, Ni
In the case of -Cr-Fe alloys, if the end angle θ exceeds 60°, the welding result will be poor, so it is necessary to keep it below 60°. However, in the case of any alloy system, it is difficult to process to a small angle such as 15°, so the lower limit is 3.
Set it to 0°.
【0017】このように突合せ部を材質に応じて所定の
角度を持つ形状にすることにより良好な接合部が得られ
る理由は、必ずしも明確ではないが、次の理由によるも
のと考えられる。すなわち、接合部の溶融した金属が右
側の母材と左側の母材に引張られるが、この時、突合せ
部に角度を付けることにより、溶融した金属が一体化し
易くなっているものと推定される。つまり、突合せ部が
角度のある形状であるので母材に引張られると同時に溶
融した右と左の板の金属同士が角度のない場合よりもな
じみ易いため、一体化し易くなっているものと考えられ
る。The reason why a good joint can be obtained by forming the abutting part at a predetermined angle depending on the material is not necessarily clear, but it is thought to be due to the following reason. In other words, the molten metal at the joint is pulled between the base metal on the right side and the base metal on the left side, but at this time, it is presumed that by setting an angle to the butt part, it becomes easier for the molten metal to integrate. . In other words, since the abutment part has an angular shape, the metals of the right and left plates, which are melted at the same time as they are pulled against the base metal, fit together more easily than if there were no angles, so it is thought that it is easier to integrate them. .
【0018】電子ビーム溶接するに先立って、突合せ部
を抵抗スポット溶接により複数個所を接合して固定する
のが好ましい。これは、前述のように、抵抗スポット溶
接によって右と左の板が固定されていることは、溶接時
に溶解すると同時に溶融金属が既になじんでいるため、
一層良好な溶接結果が得られるものと考えられる。Prior to electron beam welding, it is preferable to join and fix the abutted portions at a plurality of locations by resistance spot welding. This is because, as mentioned above, the right and left plates are fixed by resistance spot welding, and the molten metal is already blended at the same time as it melts during welding.
It is believed that even better welding results can be obtained.
【0019】なお、電子ビーム溶接の条件は特に限定さ
れるものではない。また、円筒形のパイプの溶接に特に
適しているが、他の形状の継手、例えば平板同士の溶接
も可能であることは云うまでもない。Note that the conditions for electron beam welding are not particularly limited. Although it is particularly suitable for welding cylindrical pipes, it goes without saying that joints of other shapes, such as welding flat plates together, are also possible.
【0020】次に本発明の実施例を示す。Next, examples of the present invention will be shown.
【0021】[0021]
【実施例1】0.3mm及び0.5mm厚さで幅20m
mのニチノール(ニッケルとチタンの形状記憶合金、商
品名)からなる薄板を用いて、[Example 1] Width 20m with 0.3mm and 0.5mm thickness
Using a thin plate made of Nitinol (a shape memory alloy of nickel and titanium, trade name),
【表1】
に示すように板の端部角度θ(図4)を90°から15
°の範囲で加工し、この突合せ部について[Table 1] As shown in Table 1, the end angle θ (Fig. 4) of the plate is changed from 90° to 15°.
Processing is performed within the range of °, and about this butt part
【表2】
の溶接条件で電子ビーム溶接を行って円筒形パイプを製
造した。なお、突合せ部は予め図5及び図6に示す形状
の治具で固定すると共にその板幅方向の複数個所を抵抗
スポット溶接により固定した(図4参照)。この治具は
パイプ状にした供試材を挾み込むために上部分と下部分
とからなり、上部分は抵抗スポット溶接及び電子ビーム
溶接が可能な程度の寸法の開口部を備えており、裏当て
も用いた。Cylindrical pipes were manufactured by electron beam welding under the welding conditions shown in Table 2. Note that the abutting portions were fixed in advance using a jig having the shape shown in FIGS. 5 and 6, and a plurality of locations in the board width direction were fixed by resistance spot welding (see FIG. 4). This jig consists of an upper part and a lower part to sandwich the pipe-shaped test material, and the upper part has an opening large enough to allow resistance spot welding and electron beam welding. A backing was also used.
【0022】その結果、表1に示すように、端部角度θ
が45°以下の場合に良好な溶接結果が得られた。As a result, as shown in Table 1, the end angle θ
Good welding results were obtained when the angle was 45° or less.
【0023】[0023]
【実施例2】0.5mm及び1.0mm厚さで幅600
mmのインコネル600(商品名)を用いた以外は、実
施例1と同様の要領(但し、溶接条件は[Example 2] Width 600 with thickness of 0.5mm and 1.0mm
The procedure was the same as in Example 1 except that Inconel 600 (trade name) of mm was used (however, the welding conditions were
【表4】 の条件)にて電子ビーム溶接を行った。その結果、[Table 4] Electron beam welding was performed under the following conditions. the result,
【表
3】
に示すように、端部角度θが60°以下の場合に良好な
溶接結果が得られた。As shown in Table 3, good welding results were obtained when the end angle θ was 60° or less.
【0024】[0024]
【発明の効果】以上詳述したように、本発明によれば、
突合せ部に角度を持たせるので、表面張力の強い金属の
薄板が接合可能となり、その効果は大きい。特に円筒形
のパイプの溶接が可能であるので、棒材から中ぐりして
製作する場合に比べて遥かに低コストである。円筒形の
パイプ内に他の金属を積層する複合材の製造に適してい
る。[Effects of the Invention] As detailed above, according to the present invention,
Since the abutting portion is angled, thin metal plates with strong surface tension can be joined, which is highly effective. In particular, since it is possible to weld cylindrical pipes, the cost is much lower than manufacturing by boring from bar stock. Suitable for manufacturing composite materials where other metals are layered inside a cylindrical pipe.
【図1】従来の突合せ部の形状及び溶接要領を説明する
図で、(b)は(a)の場合よりも治具3を近付けた場
合を示している。FIG. 1 is a diagram illustrating the shape and welding procedure of a conventional butt part, and (b) shows a case where a jig 3 is brought closer than in (a).
【図2】従来法により円筒状パイプを溶接により製造す
る場合に断面形状を楕円状にし、溶接部を平板に近い状
態にした場合を説明する図である。FIG. 2 is a diagram illustrating a case where a cylindrical pipe is manufactured by welding according to a conventional method, and the cross-sectional shape is made elliptical, and the welded part is made into a state similar to a flat plate.
【図3】従来の突合せ部の形状を示す断面図で、(a)
はV型、(b)はI型の場合である。FIG. 3 is a cross-sectional view showing the shape of a conventional abutment part, (a)
is for V type, and (b) is for I type.
【図4】本発明における角度θを持つ形状の突合せ部の
断面とEBW及び抵抗スポット溶接要領を説明する斜視
図である。FIG. 4 is a perspective view illustrating a cross section, EBW, and resistance spot welding procedure of a butt portion having an angle θ in the present invention.
【図5】実施例に用いた突合せ部を固定する治具を示す
断面図である。FIG. 5 is a sectional view showing a jig for fixing the abutting portion used in the example.
【図6】実施例に用いた突合せ部を固定する治具を示す
平面図である。FIG. 6 is a plan view showing a jig for fixing the abutting portion used in the example.
【図7】実施例に用いた裏当ての平面図である。FIG. 7 is a plan view of the backing used in the example.
【図8】実施例に用いた裏当ての断面図である。FIG. 8 is a cross-sectional view of the backing used in the example.
1 母材(薄板) 2 母材(薄板) 3 治具 4 円筒状パイプ溶接用治具 5 裏当て EBW 電子ビーム溶接 t 板厚 1 Base material (thin plate) 2 Base material (thin plate) 3 Jig 4 Jig for cylindrical pipe welding 5 Backing EBW Electron beam welding t Plate thickness
Claims (3)
ビーム溶接するに際し、突合せ部を30°〜45°の角
度を持って突合せできる形状に加工した後、該突合せ部
を電子ビーム溶接することを特徴とする薄板の接合方法
。[Claim 1] When electron beam welding a thin plate made of a Ni-Ti alloy, the abutting portions are processed into a shape that can be butted at an angle of 30° to 45°, and then the abutting portions are electron beam welded. A method for joining thin plates characterized by:
を電子ビーム溶接するに際し、突合せ部を30°〜60
°の角度を持って突合せできる形状に加工した後、該突
合せ部を電子ビーム溶接することを特徴とする薄板の接
合方法。[Claim 2] When electron beam welding a thin plate made of a Ni-Cr-Fe alloy, the butt portion is set at an angle of 30° to 60°.
1. A method for joining thin plates, the method comprising processing thin plates into shapes that can be butted together at an angle of .degree., and then electron beam welding the abutted portions.
部を抵抗溶接により部分的に固定する請求項1又は2に
記載の方法。3. The method according to claim 1, wherein the abutting portion is partially fixed by resistance welding prior to electron beam welding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5837891A JPH04274888A (en) | 1991-02-28 | 1991-02-28 | Jointing method of sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5837891A JPH04274888A (en) | 1991-02-28 | 1991-02-28 | Jointing method of sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04274888A true JPH04274888A (en) | 1992-09-30 |
Family
ID=13082668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5837891A Pending JPH04274888A (en) | 1991-02-28 | 1991-02-28 | Jointing method of sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04274888A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107414279A (en) * | 2017-09-19 | 2017-12-01 | 南昌航空大学 | A kind of connection method for slab TiNi alloy and titanium alloy dissimilar materials |
CN107999950A (en) * | 2017-12-06 | 2018-05-08 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of middle pressure high-velocity electron beam welding method of titanium alloy thin wall casing |
-
1991
- 1991-02-28 JP JP5837891A patent/JPH04274888A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107414279A (en) * | 2017-09-19 | 2017-12-01 | 南昌航空大学 | A kind of connection method for slab TiNi alloy and titanium alloy dissimilar materials |
CN107999950A (en) * | 2017-12-06 | 2018-05-08 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of middle pressure high-velocity electron beam welding method of titanium alloy thin wall casing |
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