CN110497072A - Fabrication process of metal rubber damping sandwich panel based on vacuum electron beam welding - Google Patents
Fabrication process of metal rubber damping sandwich panel based on vacuum electron beam welding Download PDFInfo
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- CN110497072A CN110497072A CN201910920841.7A CN201910920841A CN110497072A CN 110497072 A CN110497072 A CN 110497072A CN 201910920841 A CN201910920841 A CN 201910920841A CN 110497072 A CN110497072 A CN 110497072A
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- 238000003466 welding Methods 0.000 title claims abstract description 108
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 55
- 229920001967 Metal rubber Polymers 0.000 title claims abstract description 31
- 238000013016 damping Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000011162 core material Substances 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005686 electrostatic field Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000012792 core layer Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006399 behavior Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- 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
- B23K15/00—Electron-beam welding or cutting
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- Engineering & Computer Science (AREA)
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- Electron Sources, Ion Sources (AREA)
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Abstract
本发明提出基于真空电子束焊接的金属橡胶阻尼夹芯板制备工艺，所述夹芯板的上面板和下面板均为金属的板材，芯材为以金属丝编织而成的具有空间网状结构的金属橡胶；所述工艺用于以焊接工艺使板材覆于金属橡胶表面以制备高阻尼夹芯板结构，所述工艺包括以下步骤；A1、以超声波清洗板材和芯材，直至板材和芯材的焊接面处的氧化物和杂质被去除；A2、对板材与芯材进行装配，并以焊接夹具把板材与芯材固定形成待焊接件，把待焊接件移至真空室，以排气装置对真空室抽真空；A3、对面板板材与芯材间的焊接位进行预热后，以真空电子束焊机对焊接位进行焊接，使板材以焊接方式与芯材连接形成夹芯板；本发明能以电子束焊接方式制备金属橡胶阻尼夹芯板。
The present invention proposes a process for preparing a metal-rubber damping sandwich panel based on vacuum electron beam welding. The upper panel and the lower panel of the sandwich panel are both metal plates, and the core material is woven with metal wires and has a spatial network structure. The metal rubber; the process is used to cover the metal rubber surface with a welding process to prepare a high damping sandwich panel structure, and the process includes the following steps; A1, cleaning the plate and core material with ultrasonic waves until the plate and core material The oxides and impurities at the welding surface are removed; A2. Assemble the plate and core material, and fix the plate and core material with a welding fixture to form a piece to be welded, move the piece to be welded to a vacuum chamber, and use an exhaust device Vacuum the vacuum chamber; A3. After preheating the welding position between the panel plate and the core material, weld the welding position with a vacuum electron beam welding machine, so that the plate is connected with the core material by welding to form a sandwich panel; The invention can prepare metal rubber damping sandwich panels by electron beam welding.
Description
技术领域technical field
本发明涉及焊接工艺领域，尤其是基于真空电子束焊接的金属橡胶阻尼夹芯板制备工艺。The invention relates to the field of welding technology, in particular to the preparation technology of a metal rubber damping sandwich panel based on vacuum electron beam welding.
背景技术Background technique
随着航空航天、航海化工和核能装备等工业技术的发展，对减振缓冲功能性弹性结构材料综合性能的要求日益增高，通过金属丝编织而成具有空间网状结构的金属橡胶不仅能满足在高低温、大载荷冲击、盐雾等复杂服役环境，还提升了材料的弹性阻尼性能。夹芯结构是由两层较薄的面板和中间较厚的轻质多孔芯层构成，结合了面板和芯层的优异特性，具有轻质、高比强度、高比刚度和耐冲击等优良性能。在能够满足强度和刚度的条件下,使用夹芯材料后结构的减重性能明显提高,同时还能减小噪声和振动产生的危害。研究和制备金属阻尼夹心结构为复合夹芯板高通量的制备工艺链和闭环性能调控提供科学的指导，对发展高性能金属复合功能构件的先进制造技术和理论具有重要意义。With the development of industrial technologies such as aerospace, marine chemical industry and nuclear energy equipment, the requirements for the comprehensive performance of vibration-damping and buffering functional elastic structural materials are increasing. Complex service environments such as high and low temperature, heavy load impact, and salt spray have also improved the elastic damping performance of the material. The sandwich structure is composed of two thinner panels and a thicker lightweight porous core layer in the middle. It combines the excellent characteristics of the panels and the core layer, and has excellent properties such as light weight, high specific strength, high specific stiffness and impact resistance. . Under the condition that the strength and stiffness can be satisfied, the weight reduction performance of the structure is obviously improved after using the sandwich material, and the harm caused by noise and vibration can also be reduced at the same time. The research and preparation of metal damping sandwich structures provides scientific guidance for the high-throughput preparation process chain and closed-loop performance regulation of composite sandwich panels, and is of great significance to the development of advanced manufacturing technologies and theories of high-performance metal composite functional components.
现有的金属橡胶阻尼夹芯板制备方法主要是螺栓连接和胶粘法。这种方法存在的问题和缺陷主要有：The existing methods for preparing metal-rubber damping sandwich panels are mainly bolt connection and gluing. The problems and defects of this method mainly include:
1）胶粘法制备金属阻尼夹芯板，通常是使用胶黏剂将实体金属面板与芯层大面积黏接复合在一起，存在结合强度低、耐高温性能差、腐蚀失效的问题，且承载能力小，易分层。1) The metal damping sandwich panel is prepared by the adhesive method, which usually uses an adhesive to bond the solid metal panel and the core layer together in a large area, which has the problems of low bonding strength, poor high temperature resistance, and corrosion failure. Small capacity, easy to layer.
2）螺栓连接法制备金属阻尼夹芯板，界面结合强度低，产品规格小，工作时受力不均匀容易发生局部失效，使得夹芯板寿命大大降低。2) The metal damping sandwich panel is prepared by the bolt connection method, the interface bonding strength is low, the product specification is small, and the force is uneven during work, which is prone to local failure, which greatly reduces the life of the sandwich panel.
胶粘法和螺栓连接都属于物理连接方式，产品稳定性能差，使用环境具有一定的局限性，极大的限制了大尺寸化的夹芯板的制备和在相关领域的应用。Both the glue method and the bolt connection are physical connection methods, the product stability is poor, and the use environment has certain limitations, which greatly limits the preparation of large-sized sandwich panels and their application in related fields.
发明内容Contents of the invention
本发明提出基于真空电子束焊接的金属橡胶阻尼夹芯板制备工艺，能以电子束焊接方式制备金属橡胶阻尼夹芯板。The invention proposes a preparation process of the metal rubber damping sandwich panel based on vacuum electron beam welding, and the metal rubber damping sandwich panel can be prepared by electron beam welding.
本发明采用以下技术方案。基于真空电子束焊接的金属橡胶阻尼夹芯板制备工艺，所述夹芯板的上面板（13）和下面板（11）均为金属的板材，芯材（12）为以金属丝编织而成的具有空间网状结构的金属橡胶；所述工艺用于以焊接工艺使板材覆于金属橡胶表面以制备高阻尼夹芯板结构，所述工艺包括以下步骤；The present invention adopts the following technical solutions. The preparation process of the metal rubber damping sandwich panel based on vacuum electron beam welding, the upper panel (13) and the lower panel (11) of the sandwich panel are both metal plates, and the core material (12) is braided with metal wire A metal rubber with a space network structure; the process is used to cover the surface of the metal rubber with a welding process to prepare a high damping sandwich panel structure, and the process includes the following steps;
A1、以超声波清洗板材和芯材，直至板材和芯材的焊接面处的氧化物和杂质被去除；A1. Clean the plate and core material with ultrasonic waves until the oxides and impurities on the welding surface of the plate and core material are removed;
A2、对板材与芯材进行装配，并以焊接夹具（8）把板材与芯材固定形成待焊接件，把待焊接件移至真空室（9），以排气装置（10）对真空室抽真空；A2. Assemble the plate and core material, and fix the plate and core material with a welding fixture (8) to form a piece to be welded, move the piece to be welded to the vacuum chamber (9), and use the exhaust device (10) to clean the vacuum chamber Vacuum;
A3、对面板板材与芯材间的焊接位（28）进行预热后，以真空电子束焊机对焊接位进行焊接，使板材以焊接方式与芯材连接形成夹芯板。A3. After preheating the welding position (28) between the panel plate and the core material, weld the welding position with a vacuum electron beam welding machine, so that the plate is connected with the core material by welding to form a sandwich panel.
在步骤A3后还包括以下步骤；After step A3, the following steps are also included;
A4、在真空室内对夹芯板进行真空保温；A4. Carry out vacuum insulation on the sandwich panel in the vacuum chamber;
A5、把完成真空保温的夹芯板取出真空室后，对夹芯板进行急冷淬火。A5. After the sandwich panel completed vacuum insulation is taken out of the vacuum chamber, the sandwich panel is rapidly cooled and quenched.
所述金属橡胶包括有以金属丝编织而成的金属丝螺旋卷结构（29）；在焊接时，所述焊接位处焊接界面的熔深为金属丝螺旋卷直径的1-1.5倍。The metal rubber includes a metal wire spiral structure (29) braided by metal wire; during welding, the penetration depth of the welding interface at the welding position is 1-1.5 times the diameter of the metal wire spiral coil.
所述焊接时的焊接参数优选为；所述真空室的真空度为8×10-2Pa，所述真空电子束焊机采用电子束的电压为60KV，电子束电流3.7mA，焊接速度3mm/min。The welding parameters during the welding are preferably: the vacuum degree of the vacuum chamber is 8 × 10-2Pa, the voltage of the electron beam used by the vacuum electron beam welding machine is 60KV, the electron beam current is 3.7mA, and the welding speed is 3mm/min .
所述真空电子束焊机包括电子枪（1）；所述电子枪包括灯丝（2）、阴极（3）、阳极（4）；电子枪的发射方向上顺序设有磁透镜（5）和偏转线圈（6）；所述灯丝由灯丝电源（17）供电；所述阳极和阴极由高压加速电源（14）供电；所述高压加速电源的输出端处串联有电阻（16）；所述偏转线圈由偏转电源（15）供电。The vacuum electron beam welding machine includes an electron gun (1); the electron gun includes a filament (2), a cathode (3), and an anode (4); a magnetic lens (5) and a deflection coil (6) are sequentially arranged in the emission direction of the electron gun ); the filament is powered by a filament power supply (17); the anode and cathode are powered by a high-voltage accelerating power supply (14); a resistor (16) is connected in series at the output end of the high-voltage accelerating power supply; the deflection coil is powered by a deflection power supply (15) POWER SUPPLY.
当焊机工作时，电子枪的灯丝在真空环境中发射电子，所述阳极和阴极形成高压静电场对灯丝发射的电子加速形成电子束（7）；所述磁透镜对电子束聚焦以形成高密度电子束；所述偏转线圈对高密度电子束的方向进行控制，使高密度电子束轰击至焊接位处，使焊接处的板材和芯材在高温下发生物理冶金行为以进行焊接。When the welder is working, the filament of the electron gun emits electrons in a vacuum environment, and the anode and cathode form a high-voltage electrostatic field to accelerate the electrons emitted by the filament to form an electron beam (7); the magnetic lens focuses the electron beam to form a high-density Electron beam: The deflection coil controls the direction of the high-density electron beam, so that the high-density electron beam bombards the welding position, so that the plate and core material at the welding position undergo physical metallurgical behavior at high temperature for welding.
所述焊接夹具为左右对称结构，包括立于底座（22）上的两根支撑杆（18）；所述底座固定于固定花盘（23）上；每根支撑杆上均套有一可滑动的导向柱（19）；所述导向柱可被导向柱紧固件锁定于支撑杆上；两个导向柱处均设有带定位手柄（21）的横向的定位螺杆（20）；定位螺杆末端设有固定槽（26）；当进行焊接时，两个导向柱的固定槽槽口相对形成待焊接件的容置结构，固定槽以槽壁处的带紧固手柄（24）的紧固螺杆（25）对待焊接件（27）进行固定；当需调整待焊接件的位置和姿态时，可通过移动或旋转导向柱来调整待焊接件的高度和角度。The welding fixture has a left-right symmetrical structure, including two support rods (18) standing on the base (22); the base is fixed on a fixed faceplate (23); each support rod is covered with a slidable guide column (19); the guide column can be locked on the support rod by the guide column fastener; the two guide columns are provided with a horizontal positioning screw (20) with a positioning handle (21); the end of the positioning screw is provided with Fixing groove (26); when welding, the fixing groove notches of the two guide columns are opposite to form the accommodating structure of the parts to be welded, and the fixing groove is formed by the fastening screw rod (25) with the fastening handle (24) at the groove wall. ) to fix the piece to be welded (27); when the position and posture of the piece to be welded need to be adjusted, the height and angle of the piece to be welded can be adjusted by moving or rotating the guide column.
所述焊接位（28）在夹芯板的上表面和下表面处按网格状行列密集分布。The welding positions (28) are densely distributed in grid-like rows and columns at the upper surface and the lower surface of the sandwich panel.
所述密集分布的焊接位中，相邻的焊接位在电子束焊接后相互连接形成深且窄的焊缝。Among the densely distributed welding positions, adjacent welding positions are connected to each other after electron beam welding to form a deep and narrow weld.
所述芯材的空间网状结构为以金属丝编织而成的金属丝螺旋卷结构经相互咬合而形成。The spatial network structure of the core material is formed by interlocking the helical winding structure of metal wires woven by metal wires.
本发明的优点在于：The advantages of the present invention are:
1）采用真空电子束焊接技术焊接异种结构金属复合材料，焊接参数可以精确调整，保证焊接接头的宽度和深度，精确控制焊接界面的熔深为金属丝螺旋卷直径的1-1.5倍，有效的减小了成形过程中产生的变形；1) Vacuum electron beam welding technology is used to weld heterogeneous metal composite materials. The welding parameters can be adjusted precisely to ensure the width and depth of the welded joints. The penetration depth of the welded interface is precisely controlled to be 1-1.5 times the diameter of the spiral coil of the metal wire. Reduced deformation during the forming process;
2）焊接时在面板和芯层界面上发生的一系列物理冶金行为，使面板和芯层形成理想的冶金结合，较现有的物理连接技术，金属面板与芯层界面可以获得更高的结合强度和更好的力学性能；2) A series of physical metallurgical behaviors that occur at the interface between the face plate and the core layer during welding make the face plate and the core layer form an ideal metallurgical bond. Compared with the existing physical connection technology, the interface between the metal face plate and the core layer can obtain a higher bond Strength and better mechanical properties;
3）真空电子束焊接采用空间网状结构焊接轨迹，焊缝一致性和组织性能好，保证芯层金属橡胶与金属面板充分融合，有效提高界面的结合强度；3) Vacuum electron beam welding adopts a spatial network structure welding track, which has good weld consistency and organizational performance, ensures the full fusion of the core metal rubber and the metal panel, and effectively improves the bonding strength of the interface;
4）生产设备结构简单，金属阻尼夹心板尺寸精度高，生产过程可控性强，再现性高。4) The structure of the production equipment is simple, the dimensional accuracy of the metal damping sandwich panel is high, the production process is highly controllable, and the reproducibility is high.
通过本发明制备的夹芯板，可用于航空航天、汽车与轨道交通运输、舰船与海洋工程、建筑和防护工程等领域机械结构部件中，在满足强度和刚度的条件下，实现重型设备的轻量化,提高设备的使用寿命。The sandwich panel prepared by the present invention can be used in mechanical structural components in the fields of aerospace, automobile and rail transportation, ship and marine engineering, construction and protection engineering, etc., and realize the rigidity of heavy equipment under the condition of satisfying strength and rigidity. Lightweight, improve the service life of equipment.
附图说明Description of drawings
下面结合附图和具体实施方式对本发明进一步详细的说明：Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
附图1是本发明的示意图；Accompanying drawing 1 is the schematic diagram of the present invention;
附图2是焊接夹具的示意图；Accompanying drawing 2 is the schematic diagram of welding fixture;
附图3是本发明在焊接时电子枪的移动轨迹示意图；Accompanying drawing 3 is the moving locus schematic diagram of electron gun when welding of the present invention;
附图4是焊接完成的夹芯板在焊接位处的剖切示意图；Accompanying drawing 4 is the cut-away schematic diagram of the sandwich panel that has been welded at the welding position;
附图5是焊接完成的夹芯板的网格状行列焊缝轨迹示意图；Accompanying drawing 5 is the schematic diagram of the grid-shaped row and column weld track of the welded sandwich panel;
图中：1-电子枪；2-灯丝；3-阴极；4-阳极；5-磁透镜；6-偏转线圈；7-电子束；8-焊接夹具；9-真空室；10-排气装置；11-下面板；12-芯材；13-上面板；14-高压加速电源；15-偏转电源；16-电阻；17-灯丝电源；18-支撑杆；19-导向柱；20-定位螺杆；21-定位手柄；22-底座；24-紧固手柄；25-紧固螺杆；26-固定槽；27-待焊接件；28-焊接位；29-金属丝螺旋卷结构；100-焊缝。In the figure: 1-electron gun; 2-filament; 3-cathode; 4-anode; 5-magnetic lens; 6-deflection coil; 7-electron beam; 8-welding fixture; 9-vacuum chamber; 10-exhaust device; 11-lower panel; 12-core material; 13-upper panel; 14-high voltage acceleration power supply; 15-deflection power supply; 16-resistance; 17-filament power supply; 18-support rod; 21-positioning handle; 22-base; 24-fastening handle; 25-fastening screw; 26-fixing groove; 27-piece to be welded; 28-welding position;
具体实施方式Detailed ways
如图1-5所示，基于真空电子束焊接的金属橡胶阻尼夹芯板制备工艺，所述夹芯板的上面板13和下面板11均为金属的板材，芯材12为以金属丝编织而成的具有空间网状结构的金属橡胶；所述工艺用于以焊接工艺使板材覆于金属橡胶表面以制备高阻尼夹芯板结构，所述工艺包括以下步骤；As shown in Figures 1-5, the preparation process of the metal rubber damping sandwich panel based on vacuum electron beam welding, the upper panel 13 and the lower panel 11 of the sandwich panel are both metal plates, and the core material 12 is braided with metal wire The formed metal rubber with a spatial network structure; the process is used to cover the surface of the metal rubber with a welding process to prepare a high damping sandwich panel structure, and the process includes the following steps;
A1、以超声波清洗板材和芯材，直至板材和芯材的焊接面处的氧化物和杂质被去除；A1. Clean the plate and core material with ultrasonic waves until the oxides and impurities on the welding surface of the plate and core material are removed;
A2、对板材与芯材进行装配，并以焊接夹具8把板材与芯材固定形成待焊接件，把待焊接件移至真空室9，以排气装置10对真空室抽真空；A2. Assemble the plate and core material, and fix the plate and core material with welding fixture 8 to form a piece to be welded, move the piece to be welded to the vacuum chamber 9, and evacuate the vacuum chamber with the exhaust device 10;
A3、对面板板材与芯材间的焊接位28进行预热后，以真空电子束焊机对焊接位进行焊接，使板材以焊接方式与芯材连接形成夹芯板。A3. After preheating the welding position 28 between the panel plate and the core material, weld the welding position with a vacuum electron beam welding machine, so that the plate is connected with the core material by welding to form a sandwich panel.
在步骤A3后还包括以下步骤；After step A3, the following steps are also included;
A4、在真空室内对夹芯板进行真空保温；A4. Carry out vacuum insulation on the sandwich panel in the vacuum chamber;
A5、把完成真空保温的夹芯板取出真空室后，对夹芯板进行急冷淬火。A5. After the sandwich panel completed vacuum insulation is taken out of the vacuum chamber, the sandwich panel is rapidly cooled and quenched.
所述金属橡胶包括有以金属丝编织而成的金属丝螺旋卷结构29；在焊接时，所述焊接位处焊接界面的熔深为金属丝螺旋卷直径的1-1.5倍。The metal rubber includes a wire helical coil structure 29 braided with metal wires; during welding, the penetration depth of the welding interface at the welding position is 1-1.5 times the diameter of the metal wire helical coil.
所述焊接时的焊接参数优选为；所述真空室的真空度为8×10-2Pa，所述真空电子束焊机采用电子束的电压为60KV，电子束电流3.7mA，焊接速度3mm/min。The welding parameters during the welding are preferably: the vacuum degree of the vacuum chamber is 8 × 10-2Pa, the voltage of the electron beam used by the vacuum electron beam welding machine is 60KV, the electron beam current is 3.7mA, and the welding speed is 3mm/min .
所述真空电子束焊机包括电子枪1；所述电子枪包括灯丝2、阴极3、阳极4；电子枪的发射方向上顺序设有磁透镜5和偏转线圈6；所述灯丝由灯丝电源17供电；所述阳极和阴极由高压加速电源14供电；所述高压加速电源的输出端处串联有电阻16；所述偏转线圈由偏转电源15供电。Described vacuum electron beam welder comprises electron gun 1; Described electron gun comprises filament 2, cathode 3, anode 4; On the emitting direction of electron gun, be provided with magnetic lens 5 and deflection coil 6 in sequence; Described filament is powered by filament power supply 17; The anode and cathode are powered by a high-voltage accelerating power supply 14; a resistor 16 is connected in series at the output end of the high-voltage accelerating power supply; the deflection coil is powered by a deflection power supply 15.
当焊机工作时，电子枪的灯丝在真空环境中发射电子，所述阳极和阴极形成高压静电场对灯丝发射的电子加速形成电子束7；所述磁透镜对电子束聚焦以形成高密度电子束；所述偏转线圈对高密度电子束的方向进行控制，使高密度电子束轰击至焊接位处，使焊接处的板材和芯材在高温下发生物理冶金行为以进行焊接。When the welding machine is working, the filament of the electron gun emits electrons in a vacuum environment, and the anode and cathode form a high-voltage electrostatic field to accelerate the electrons emitted by the filament to form an electron beam 7; the magnetic lens focuses the electron beam to form a high-density electron beam The deflection coil controls the direction of the high-density electron beam, so that the high-density electron beam bombards the welding position, so that the plate and core material at the welding position undergo physical metallurgical behavior at high temperature for welding.
所述焊接夹具为左右对称结构，包括立于底座22上的两根支撑杆18；所述底座固定于固定花盘23上；每根支撑杆上均套有一可滑动的导向柱19；所述导向柱可被导向柱紧固件锁定于支撑杆上；两个导向柱处均设有带定位手柄21的横向的定位螺杆20；定位螺杆末端设有固定槽26；当进行焊接时，两个导向柱的固定槽槽口相对形成待焊接件的容置结构，固定槽以槽壁处的带紧固手柄24的紧固螺杆25对待焊接件27进行固定；当需调整待焊接件的位置和姿态时，可通过移动或旋转导向柱来调整待焊接件的高度和角度。The welding fixture is a left-right symmetrical structure, including two support rods 18 standing on the base 22; the base is fixed on the fixed faceplate 23; each support rod is covered with a slidable guide column 19; the guide The column can be locked on the support rod by the guide column fastener; the two guide columns are provided with a horizontal positioning screw 20 with a positioning handle 21; the end of the positioning screw is provided with a fixing groove 26; when welding, the two guides The notches of the fixing slots of the columns are relatively formed to accommodate the parts to be welded, and the fastening screw 25 with the fastening handle 24 at the groove wall is used to fix the parts to be welded 27 in the fixed groove; , the height and angle of the parts to be welded can be adjusted by moving or rotating the guide column.
所述焊接位28在夹芯板的上表面和下表面处按网格状行列密集分布。The welding positions 28 are densely distributed in grid-like rows and columns at the upper surface and the lower surface of the sandwich panel.
所述密集分布的焊接位中，相邻的焊接位在电子束焊接后相互连接形成深且窄的焊缝。Among the densely distributed welding positions, adjacent welding positions are connected to each other after electron beam welding to form a deep and narrow weld.
所述芯材的空间网状结构为以金属丝编织而成的金属丝螺旋卷结构经相互咬合而形成。The spatial network structure of the core material is formed by interlocking the helical winding structure of metal wires woven by metal wires.
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