CN108723621B - Side welding method of deformable metal foil structure with small initial included angle - Google Patents
Side welding method of deformable metal foil structure with small initial included angle Download PDFInfo
- Publication number
- CN108723621B CN108723621B CN201810596857.2A CN201810596857A CN108723621B CN 108723621 B CN108723621 B CN 108723621B CN 201810596857 A CN201810596857 A CN 201810596857A CN 108723621 B CN108723621 B CN 108723621B
- Authority
- CN
- China
- Prior art keywords
- point
- metal foil
- deformable metal
- foil structure
- welded
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Connection Of Plates (AREA)
Abstract
A side welding method for a deformable metal foil structure with a small initial included angle belongs to the field of special welding and connection of deformable metal foil structures, and particularly relates to a side welding method for a deformable metal foil structure with a small initial included angle. The invention aims to solve the problem of difficult welding of the side part of the deformable metal foil structure with a small initial included angle. The side welding method comprises the following steps: firstly, arranging a joint; secondly, setting 6 spot welding positions; thirdly, pressing and forming to obtain a deformable metal foil structure before brazing; fourthly, spot welding is carried out to obtain a spot-welded structure; and fifthly, performing heat treatment in a furnace to complete the welding of the side part of the deformable metal foil structure with a small initial included angle. The advantages are that: sustainable 1.2atm differential pressure. The method is mainly used for welding the side parts of the deformable metal foil structure with a small initial included angle.
Description
Technical Field
The invention belongs to the field of special welding and connection of deformable metal foil structures, and particularly relates to a side welding method of a deformable metal foil structure with a small initial included angle.
Background
The deformable structure can change volume by folding and unfolding, and cannot be damaged in the folding and unfolding process, so that the deformable structure is widely applied to aerospace. Compared with a deformable structure made of a high polymer material, the deformable structure made of the metal material is good in overall rigidity and material strength, and excellent in ultraviolet irradiation resistance and shaping performance after expansion. Therefore, the method has good application potential. Although the application of deformable metal structures is reported abroad at present, related manufacturing technologies are not disclosed for confidentiality reasons, and domestic research is at the initial stage. The metal foil is easy to form relative to the plate, and is not easy to break the outer surface of the bending and wrinkle the inner surface when the bending is deformed, and meanwhile, the deformation resistance is small. Therefore, the metal foil is more suitable for manufacturing of deformable structural members with low load bearing requirements or multi-layer composites.
The forming and deformation process of a deformable metal foil structure generally consists of several stages: firstly, carrying out plastic forming and sealing connection on a structure to form a metal foil structure, connecting the side parts of the structure, and keeping the structure in an initial state after the connection is finished; secondly, folding the structure in the initial state into a small-volume state, and placing the small-volume state in a transport tool; then, the folded structure is unfolded by an external load to be in a large volume state, and the folded structure is put into use in the large volume state. The initial state of the structure influences the size of the folded structure, and further influences the size of the occupied transportation space. Generally, the smaller the initial state volume, the smaller the transport space occupied.
The volume of the structure in the initial state is small, which means that the included angle between adjacent units of the structure in the initial state is small. Because the joint is almost contacted with other parts of the structure, the space for welding operation is small, and the difficulty of connecting the side part of the deformable ultrathin metal foil structure with a small included angle in the initial state is higher. At present, no relevant technical report exists.
Disclosure of Invention
The invention aims to solve the problem of difficulty in welding the side part of the deformable metal foil structure with a small initial included angle, and provides a method for welding the side part of the deformable metal foil structure with the small initial included angle.
A side welding method of a deformable metal foil structure with a small initial included angle is specifically completed according to the following steps:
the method comprises the following steps that firstly, joints are arranged on two sides of a deformable metal foil structure foil plate, the deformable metal foil structure foil plate is in a parallelogram shape and consists of a plurality of identical triangular blades, the plane shape formed by two adjacent triangular blades is in the parallelogram shape, the two outermost triangular blades of the deformable metal foil structure foil plate are blades to be welded, the joints are arranged at the minimum acute angle end of the longest inclined edge of the blades to be welded, the joints arranged on the blades to be welded are in lap joint with the blades to be welded on the other side, and during lap joint welding, except that the outer joints of the blades to be welded cannot interfere with other parts;
secondly, 6 spot welding positions are arranged on the joint to ensure that the joint and the blade to be welded are uniformly fixed;
thirdly, after the deformable metal foil structure foil plate is pressed and formed through a steel die, coating brazing filler metal on the side part of the joint for sealing the joint during lap welding to obtain the deformable metal foil structure before brazing;
placing a clamping platform on a spot welding machine, placing the to-be-welded blade of the formed deformable metal foil structure on a bearing plate of the clamping platform, ensuring that the joint and the to-be-welded blade are placed flatly by the bearing plate, ensuring that 6 spot welding positions on the joint are all in the upper surface of the bearing plate, and then performing spot welding by using the spot welding machine corresponding to the 6 spot welding positions on the joint to obtain a spot-welded structure;
and fifthly, placing the spot-welded structure in a heat treatment furnace, brazing under the protection of nitrogen, and cooling to room temperature along with the furnace to complete the side welding of the deformable metal foil structure with a small initial included angle.
The invention has the advantages that:
1. the invention realizes the reliable connection of the side parts of the deformable metal foil structure with small initial included angle. The deformable metal foil structure with the small included angle in the initial state is small in operable space at the joint position and not easy to weld, and traditional spot welding and brazing are combined. Realize the fixed of joint through spot welding, increase the postweld intensity of joint. Meanwhile, the joint sealing connection is realized through brazing. The joint with good sealing performance and high strength is obtained.
2. On one hand, the joint with a specific shape and size is designed, so that the joint is ensured not to interfere with each other during and after connection, and in addition, the joint is arranged to be lapped, so that the joint has enough contact area to realize sealing connection; on the other hand, a specific clamping platform is designed during spot welding, so that the structure is prevented from being locally deformed due to the force application of a welding gun electrode during welding.
3. The deformable metal foil with small initial included angle obtained by welding of the invention has strong structural tightness, can bear 1.2atm differential pressure and meets the application requirements.
Drawings
Fig. 1 is a schematic structural view of a deformable metal foil structural foil, in which 4 denotes the deformable metal foil structural foil and 5 denotes a joint;
FIG. 2 is a schematic view showing the structure of a joint, wherein 5 is a joint and 6 is a spot welding position;
FIG. 3 is a schematic structural view of the clamping platform, in which 1 represents a base, 2 represents a support rod, and 3 represents a bearing plate;
fig. 4 shows a schematic view of a spot welding assembly, in which 1 denotes a base, 2 denotes a support bar, 7 denotes a deformable metal foil structure before brazing, and 8 denotes a welding head of a spot welder.
Detailed Description
The first embodiment is as follows: the embodiment is a side welding method of a deformable metal foil structure with a small initial included angle, which is specifically completed according to the following steps:
the method comprises the following steps that firstly, joints are arranged on two sides of a deformable metal foil structure foil plate, the deformable metal foil structure foil plate is in a parallelogram shape and consists of a plurality of identical triangular blades, the plane shape formed by two adjacent triangular blades is in the parallelogram shape, the two outermost triangular blades of the deformable metal foil structure foil plate are blades to be welded, the joints are arranged at the minimum acute angle end of the longest inclined edge of the blades to be welded, the joints arranged on the blades to be welded are in lap joint with the blades to be welded on the other side, and during lap joint welding, except that the outer joints of the blades to be welded cannot interfere with other parts;
secondly, 6 spot welding positions are arranged on the joint to ensure that the joint and the blade to be welded are uniformly fixed;
thirdly, after the deformable metal foil structure foil plate is pressed and formed through a steel die, coating brazing filler metal on the side part of the joint for sealing the joint during lap welding to obtain the deformable metal foil structure before brazing;
placing a clamping platform on a spot welding machine, placing the to-be-welded blade of the formed deformable metal foil structure on a bearing plate 3 of the clamping platform, ensuring that the joint and the to-be-welded blade are placed flatly by the bearing plate 3, ensuring that 6 spot welding positions on the joint are all in the upper surface of the bearing plate 3, and then performing spot welding at the 6 spot welding positions on the joint by using the spot welding machine to obtain a spot-welded structure;
and fifthly, placing the spot-welded structure in a heat treatment furnace, brazing under the protection of nitrogen, and cooling to room temperature along with the furnace to complete the side welding of the deformable metal foil structure with a small initial included angle.
The initial included angle refers to the included angle of two adjacent triangular blades. Some deformable structures have a large included angle, some deformable structures have a small included angle, the included angle of the deformable metal foil structure with the small initial included angle is less than 50 degrees, the initial included angle of the structure is small, and the problems caused by the small included angle are as follows: the side portions are not easily connected. Because there is not enough space to perform welding such as argon arc welding (for example, the welding gun of argon arc welding cannot be allowed to pass through due to the narrow space of the joint position). The best method is brazing, but it is necessary to secure the joint and the blade to which it is attached before brazing. And the brazing strength may be insufficient and thus spot welded before brazing. The purpose of spot welding is two: firstly, the joint can be fixed; secondly, the strength of the joint after brazing can be increased.
The second embodiment is as follows: the present embodiment differs from the first embodiment in that: in the first step, the deformable metal foil structure foil plate is composed of a plurality of identical triangular blades, wherein the length of the longest inclined edge of each triangular blade is 207mm, the length of the shortest edge of each triangular blade is 40mm, and the angle of the smallest acute angle corresponding to the shortest edge of each triangular blade is 11 degrees. The rest is the same as the first embodiment.
The angle of the deformable metal foil structure with a small initial angle made of the deformable metal foil structure foil provided by the present embodiment is 35 °.
The third concrete implementation mode: the present embodiment is different from the second embodiment in that: in the first step, the joint is a hexagon ABCDLK, the edge AB of the hexagon ABCDLK is positioned on the extension line of the shortest edge of the blade to be welded, the edge AK is overlapped with the longest oblique edge of the blade to be welded, the length of the edge AB is 30mm, the length of the edge BC is 28mm, the length of the edge CD is 65mm, the included angle between the edge AB and the edge BC is 117 degrees, the included angle between the edge BC and the edge CD is 159 degrees, the edge DL is a 45-degree chamfer edge, and the length of the edge DL is 2 mm. The rest is the same as the second embodiment.
The fourth concrete implementation mode: the present embodiment is different from the third embodiment in that: the 6 spot welding positions in the second step are respectively a point E, a point F, a point H, a point G, a point I and a point J, wherein the vertical distance between the point E, the point G, the point I and the point J and the edge AK is 6mm, the point E, the point G, the point I and the point J are sequentially arranged from A to K, the point E, the point G, the point I and the point J are distributed at equal intervals, the intervals are 17mm, and the length of AE is 12 mm; the vertical distance between the point F and the point H and the edge AK is 18mm, the point F and the point H are arranged from A to K in sequence, the distance between the point F and the point H is 17mm, and the length of AF is 25 mm. The rest is the same as the third embodiment.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: step four the centre gripping platform comprises base 1, bracing piece 2 and loading board 3, and 2 vertical fixes on base 1 of bracing piece, and 3 levels of loading board are fixed at bracing piece 2, and loading board 3 is triangle-shaped MNO, and loading board 3 is fixed together with bracing piece 2 along limit MN, and the length of limit MN is 134mm, and the length of limit MO is 311mm, and the length of limit NO is 368 mm. The rest is the same as the first to fourth embodiments.
The sixth specific implementation mode: the second to fifth embodiments are different from the first to fifth embodiments in that: and in the third step, after the deformable metal foil structure foil plate is pressed and formed through a steel die, coating brazing filler metal on the side part of the joint, and bonding the KL edge and the LD edge by using epoxy resin glue to obtain the deformable metal foil structure before brazing. The rest is the same as the second to fifth embodiments.
The invention is not limited to the above embodiments, and one or a combination of several embodiments may also achieve the object of the invention.
The following tests were carried out to confirm the effects of the present invention
Example 1: a side welding method of a deformable metal foil structure with a small initial included angle is specifically completed according to the following steps:
the method comprises the following steps that firstly, joints are arranged on two sides of a deformable metal foil structure foil plate, the deformable metal foil structure foil plate is in a parallelogram shape and consists of a plurality of identical triangular blades, the plane shape formed by two adjacent triangular blades is in the parallelogram shape, the two outermost triangular blades of the deformable metal foil structure foil plate are blades to be welded, the joints are arranged at the minimum acute angle end of the longest inclined edge of the blades to be welded, the joints arranged on the blades to be welded are in lap joint with the blades to be welded on the other side, and during lap joint welding, except that the outer joints of the blades to be welded cannot interfere with other parts;
secondly, 6 spot welding positions are arranged on the joint to ensure that the joint and the blade to be welded are uniformly fixed;
thirdly, after the deformable metal foil structure foil plate is pressed and formed through a steel die, coating brazing filler metal on the side part of the joint for sealing the joint during lap welding to obtain the deformable metal foil structure before brazing;
placing a clamping platform on a spot welding machine, placing the to-be-welded blade of the formed deformable metal foil structure on a bearing plate 3 of the clamping platform, ensuring that the joint and the to-be-welded blade are placed flatly by the bearing plate 3, ensuring that 6 spot welding positions on the joint are all in the upper surface of the bearing plate 3, and then performing spot welding at the 6 spot welding positions on the joint by using the spot welding machine to obtain a spot-welded structure;
and fifthly, placing the spot-welded structure in a heat treatment furnace, brazing under the protection of nitrogen, and cooling to room temperature along with the furnace to complete the side welding of the deformable metal foil structure with a small initial included angle.
In the first step of this embodiment, the deformable metal foil structure foil plate is composed of a plurality of identical triangular blades, wherein the length of the longest oblique side of each triangular blade is 207mm, the length of the shortest side is 40mm, and the angle of the smallest acute angle corresponding to the shortest side is 11 °.
In the first step of this embodiment, the joint is a hexagon ABCDLK, an edge AB of the hexagon ABCDLK is located on an extension line of a shortest edge of a blade to be welded, an edge AK coincides with a longest oblique edge of the blade to be welded, the length of the edge AB is 30mm, the length of the edge BC is 28mm, the length of the edge CD is 65mm, an included angle between the edge AB and the edge BC is 117 °, an included angle between the edge BC and the edge CD is 159 °, an edge DL is a 45 ° chamfered edge, and the length of the edge DL is 2 mm.
The 6 spot welding positions in the second step of this embodiment are respectively point E, point F, point H, point G, point I and point J, wherein the vertical distance between point E, point G, point I and point J and the edge AK is 6mm, point E, point G, point I and point J are sequentially from a to K, and point E, point G, point I and point J are distributed at equal intervals, the interval is 17mm, and the length of AE is 12 mm; the vertical distance between the point F and the point H and the edge AK is 12mm, the point F and the point H are arranged from A to K in sequence, the distance between the point F and the point H is 17mm, and the length of AF is 21 mm.
In this embodiment step four centre gripping platform comprises base 1, bracing piece 2 and loading board 3, and 2 vertical fixes on base 1 of bracing piece, and 3 levels of loading board are fixed at bracing piece 2, and loading board 3 is triangle-shaped MNO, and loading board 3 is fixed together along limit MN and bracing piece 2, and the length of limit MN is 134mm, and the length of limit MO is 311mm, and the length of limit NO is 368 mm.
In the third step of this embodiment, after the deformable metal foil structure foil plate is pressed and formed by the steel die, the brazing filler metal is coated on the side of the joint, and the edge KL and the edge LD are bonded by the epoxy resin adhesive, so as to obtain the deformable metal foil structure before brazing.
After the side part of the foil structure is connected by the method, the end part is connected with the flange to form a closed structure with an inner cavity. And introducing gas into the structure, and unfolding the structure. When the air pressure is greater than 1.2atm, the structure develops air leakage at the horizontal mid-plane position of the fold, indicating that the side structure can withstand at least 1.2atm of air pressure without failure.
Claims (6)
1. A side welding method of a deformable metal foil structure with a small initial included angle is characterized by comprising the following steps of:
the method comprises the following steps that firstly, joints are arranged on two sides of a deformable metal foil structure foil plate, the deformable metal foil structure foil plate is in a parallelogram shape and consists of a plurality of identical triangular blades, the plane shape formed by two adjacent triangular blades is in the parallelogram shape, the two outermost triangular blades of the deformable metal foil structure foil plate are blades to be welded, the joints are arranged at the minimum acute angle end of the longest inclined edge of the blades to be welded, the joints arranged on the blades to be welded are in lap joint with the blades to be welded on the other side, and during lap joint welding, except that the outer joints of the blades to be welded cannot interfere with other parts;
secondly, 6 spot welding positions are arranged on the joint to ensure that the joint and the blade to be welded are uniformly fixed;
thirdly, after the deformable metal foil structure foil plate is pressed and formed through a steel die, coating brazing filler metal on the side part of the joint for sealing the joint during lap welding to obtain the deformable metal foil structure before brazing;
placing a clamping platform on a spot welding machine, placing the to-be-welded blade of the formed deformable metal foil structure on a bearing plate (3) of the clamping platform, ensuring that the joint and the to-be-welded blade are placed flatly by the bearing plate (3), ensuring that the 6 spot welding positions on the joint are all in the upper surface of the bearing plate (3), and then performing spot welding by using the spot welding machine to correspond to the 6 spot welding positions on the joint to obtain a spot-welded structure;
and fifthly, placing the spot-welded structure in a heat treatment furnace, brazing under the protection of nitrogen, and cooling to room temperature along with the furnace to complete the side welding of the deformable metal foil structure with a small initial included angle.
2. The method of welding the sides of a small initial included angle deformable metal foil structure as claimed in claim 1, wherein in step one said deformable metal foil structure foil is comprised of a plurality of identical triangular shaped blades, wherein the longest hypotenuse of the triangular shaped blades is 207mm in length, the shortest side is 40mm in length, and the shortest side corresponds to a minimum acute angle of 11 °.
3. The method of claim 2, wherein in step one the joint is hexagonal ABCDLK, side AB of hexagonal ABCDLK is on the extension of the shortest side of the blade to be welded, side AK coincides with the longest oblique side of the blade to be welded, side AB has a length of 30mm, side BC has a length of 28mm, side CD has a length of 65mm, side AB forms an angle of 117 ° with side BC, side BC forms an angle of 159 ° with side CD, side DL forms a 45 ° chamfered edge, and side DL has a length of 2 mm.
4. The method for welding the side of a deformable metal foil structure with a small initial included angle of claim 3, wherein the 6 spot welding positions in step two are point E, point F, point H, point G, point I and point J, wherein the perpendicular distance between point E, point G, point I and point J and the edge AK is 6mm, the perpendicular distance between point E, point G, point I and point J is from A to K in sequence, and the point E, point G, point I and point J are distributed at equal intervals, the interval is 17mm, and the length of AE is 12 mm; the vertical distance between the point F and the point H and the edge AK is 18mm, the point F and the point H are arranged from A to K in sequence, the distance between the point F and the point H is 17mm, and the length of AF is 25 mm.
5. The method for welding the side part of the deformable metal foil structure with the small initial included angle of claim 3 or 4, wherein the clamping platform comprises a base (1), a support rod (2) and a bearing plate (3) in the fourth step, the support rod (2) is vertically fixed on the base (1), the bearing plate (3) is horizontally fixed on the support rod (2), the bearing plate (3) is a triangular MNO, the bearing plate (3) is fixed with the support rod (2) along the edge MN, the length of the edge MN is 134mm, the length of the edge MO is 311mm, and the length of the edge NO is 368 mm.
6. The method for welding the side part of the deformable metal foil structure with the small initial included angle as claimed in claim 5, wherein in the third step, after the deformable metal foil structure foil plate is pressed and formed through a steel die, the brazing filler metal is coated on the side part of the joint, and the side KL and the side LD are bonded through epoxy resin glue, so that the deformable metal foil structure before brazing is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596857.2A CN108723621B (en) | 2018-06-11 | 2018-06-11 | Side welding method of deformable metal foil structure with small initial included angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596857.2A CN108723621B (en) | 2018-06-11 | 2018-06-11 | Side welding method of deformable metal foil structure with small initial included angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108723621A CN108723621A (en) | 2018-11-02 |
| CN108723621B true CN108723621B (en) | 2020-06-09 |
Family
ID=63932919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810596857.2A Expired - Fee Related CN108723621B (en) | 2018-06-11 | 2018-06-11 | Side welding method of deformable metal foil structure with small initial included angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108723621B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759664A (en) * | 2019-03-12 | 2019-05-17 | 哈尔滨汽轮机厂有限责任公司 | The processing method of low pressure movable vane piece welding stellite alloy sheet defect elimination process |
| CN110842362B (en) * | 2019-12-09 | 2021-04-09 | 浙江普兴电子科技有限公司 | Method for welding deformable ultrathin structure metal inner layer-flexible middle layer-metal outer layer side part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3899815A (en) * | 1973-09-28 | 1975-08-19 | Rockwell International Corp | Thermal bed screen pack |
| CN102974946A (en) * | 2012-11-12 | 2013-03-20 | 西安航空动力股份有限公司 | Method for controlling deformation of sheet bar honeycomb during vacuum soldering and brazing |
| CN106216799A (en) * | 2016-09-29 | 2016-12-14 | 深圳市晟达真空钎焊技术有限公司 | Metallic plate and the weld jig of metal folding sheet vacuum brazing |
| CN106238582A (en) * | 2016-09-19 | 2016-12-21 | 哈尔滨工业大学 | A kind of mould using metal foil/thin plate making space deployable cabin section |
| CN106493505A (en) * | 2016-11-16 | 2017-03-15 | 中国人民解放军第五七九工厂 | The advanced method for welding that a kind of aero-engine stator blade three-dimensional dimension is repaired |
-
2018
- 2018-06-11 CN CN201810596857.2A patent/CN108723621B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3899815A (en) * | 1973-09-28 | 1975-08-19 | Rockwell International Corp | Thermal bed screen pack |
| CN102974946A (en) * | 2012-11-12 | 2013-03-20 | 西安航空动力股份有限公司 | Method for controlling deformation of sheet bar honeycomb during vacuum soldering and brazing |
| CN106238582A (en) * | 2016-09-19 | 2016-12-21 | 哈尔滨工业大学 | A kind of mould using metal foil/thin plate making space deployable cabin section |
| CN106216799A (en) * | 2016-09-29 | 2016-12-14 | 深圳市晟达真空钎焊技术有限公司 | Metallic plate and the weld jig of metal folding sheet vacuum brazing |
| CN106493505A (en) * | 2016-11-16 | 2017-03-15 | 中国人民解放军第五七九工厂 | The advanced method for welding that a kind of aero-engine stator blade three-dimensional dimension is repaired |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108723621A (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109397796B (en) | Curved surface sandwich metal plate | |
| JP4927315B2 (en) | Method for hydroforming articles and articles formed thereby | |
| CN108723621B (en) | Side welding method of deformable metal foil structure with small initial included angle | |
| US3072225A (en) | Honeycomb sandwich structure | |
| CN110948885B (en) | Laser swing welding method for lap joint structure of thermoplastic composite material and aluminum alloy | |
| CN111843098B (en) | Clamp for brazing aluminum honeycomb panel and brazing process | |
| CN104227182A (en) | Process for molding I-steel main welding seam non-back chipping full-penetration I-level component | |
| US3052021A (en) | Method of forming a multi-layer head | |
| CN102091861B (en) | Metal stud welding system combined with friction heat source | |
| CN206732428U (en) | Four plate-side plate welding fixtures of casing | |
| CN102126086B (en) | Laser weld-bonding method | |
| CN109604768A (en) | Rolling stock car door repair process | |
| CN112191994B (en) | Welding method and assembly process of press trolley | |
| JP3610274B2 (en) | Waveguide and manufacturing method thereof | |
| CN105140429A (en) | Laminated lithium battery aluminum shell structure and manufacturing method thereof | |
| JPH08230098A (en) | Metal sandwich structure and its production | |
| CN207953063U (en) | Ring supporting device | |
| CN105108367B (en) | A kind of tyre crane tack welding process | |
| CN107768566A (en) | A kind of easy-to-mount battery modules | |
| CN207504038U (en) | A kind of easy-to-mount battery modules | |
| CN210774745U (en) | Welded type storehouse body structure for preventing thermal expansion and cold contraction deformation | |
| CN110842362B (en) | Method for welding deformable ultrathin structure metal inner layer-flexible middle layer-metal outer layer side part | |
| CN109604384B (en) | High-strength box-type column distortion on-site correction method | |
| CN204075529U (en) | The transition structure of I-steel main weld not back chipping full penetration I level component | |
| CN102581415B (en) | Method for brazing foamed aluminum plate and aluminum plate by removing interfacial oxide films through bubble wall friction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20210611 |