阅读说明：本技术 一种钛合金支板的电子束焊接结构增强方法 (Electron beam welding structure reinforcing method for titanium alloy support plate ) 是由 倪建成 孙培秋 吴茂昌 于速 赵飞 于 2021-11-13 设计创作，主要内容包括：一种钛合金支板的电子束焊接结构增强方法,钛合金支板带有空腔结构。具体包括如下步骤：加强筋位置的确定、钻孔、修配加强筋、清理钛合金支板及加强筋、氩弧焊定位加强筋、电子束焊接、钳修、使用超声波去除钛合金支板焊接残余应力。本发明具有以下技术特点：一是加强筋位置定位精确；二是真空电子束焊接质量稳定；三是加强筋与钛合金支板结合强度高。(An electron beam welding structure reinforcing method for a titanium alloy support plate, wherein the titanium alloy support plate is provided with a cavity structure. The method specifically comprises the following steps: the method comprises the steps of determining the position of a reinforcing rib, drilling, repairing the reinforcing rib, cleaning a titanium alloy supporting plate and the reinforcing rib, positioning the reinforcing rib through argon arc welding, welding an electron beam, repairing by using a clamp, and removing the welding residual stress of the titanium alloy supporting plate through ultrasonic waves. The invention has the following technical characteristics: firstly, the position of the reinforcing rib is accurately positioned; secondly, the welding quality of the vacuum electron beam is stable; thirdly, the reinforcing rib and the titanium alloy support plate have high bonding strength.)

1. An electron beam welding structure reinforcing method of a titanium alloy support plate is characterized in that:

a. determination of the position of reinforcing bars

Determining the position of a reinforcing rib by drilling a hole in the titanium alloy support plate, scribing at the positions L1 and L2 away from the ends of the titanium alloy support plate and D1 and D2 away from the edges, and determining the drilling positions, namely the hole 1 to the hole 4;

b. drilling holes

According to the position determined by scribing, drilling holes 1-4 on two sides of the titanium alloy support plate respectively, so that the two sides of the titanium alloy support plate are through at the drilling positions;

c. repairing reinforcing rib

Repairing the reinforcing ribs according to the process requirements, wherein the reinforcing ribs are required to have no fracture marks and smooth surfaces; the length of the reinforcing rib is not shorter than that of the titanium alloy support plate, and the height of the reinforcing rib is not higher than that of the inner cavity of the titanium alloy support plate;

d. cleaning titanium alloy support plate and reinforcing rib

Cleaning the cavity of the titanium alloy support plate, drilling holes and removing impurities on the surface of the reinforcing rib;

e. argon arc welding positioning reinforcing rib

Filling the reinforcing rib into the cavity of the titanium alloy support plate along the axial direction of the titanium alloy support plate corresponding to the positions of the holes 1-4; performing argon arc welding positioning on the titanium alloy support plate and the reinforcing rib in the holes 1-4;

f. electron beam welding

Respectively carrying out electron beam welding on the filled reinforcing ribs on two sides of the titanium alloy support plate;

g. pliers repairing device

Removing the redundant parts of the reinforcing ribs on the two sides of the titanium alloy support plate by using pliers to enable the surfaces on the two sides of the titanium alloy support plate to be flat;

h. and removing the welding residual stress of the titanium alloy support plate by using ultrasonic waves.

2. The method of claim 1, wherein: in the step b, the aperture of the holes 1-4 is 2 mm.

3. The method of claim 1, wherein: electron beam welding should meet the following technical specifications:

welding: the scanning waveform is circular wave, the acceleration voltage is 150kV, the focusing is 2085mA, the scanning frequency is 20Hz, the scanning amplitude is 0.4mm, the welding speed is 8mm/s, and the welding beam current is 2.7 mA;

modification welding: the scanning waveform is circular wave, the accelerating voltage is 150kV, the focusing is 2145mA, the scanning frequency is 20Hz, the scanning amplitude is 1.6mm, the welding speed is 8mm/s, and the welding beam current is 2.0 mA.

Technical Field

The invention relates to the technical field of aerospace and aviation, and particularly provides an electron beam welding structure reinforcing method for a titanium alloy support plate.

Background

The titanium alloy support plate is of a thin-wall structure, and the risk of mechanism damage caused by poor structural strength exists in use.

Disclosure of Invention

The invention aims to provide a method for reinforcing an electron beam welding structure of a titanium alloy support plate with a cavity, which achieves the purpose of fixing a reinforcing rib and prevents the structural damage in the using process by positioning the mounting position of the reinforcing rib and carrying out electron beam welding on the reinforcing rib.

The invention particularly provides a method for reinforcing an electron beam welding structure of a titanium alloy support plate, wherein the titanium alloy support plate is provided with a cavity structure. The method specifically comprises the following steps:

a. and (3) determining the position of the reinforcing rib: the position of the reinforcing rib is determined by drilling a hole in the titanium alloy support plate, and scribing is carried out at the positions L1 and L2 away from the ends of the titanium alloy support plate and D1 and D2 away from the edges, so that the drilling positions, namely the hole 1 to the hole 4, are determined.

b. Drilling: according to the position determined by scribing, holes 1-4 are drilled on the two sides of the titanium alloy support plate respectively, so that the two sides of the titanium alloy support plate are through at the drilling positions.

c. Repairing reinforcing ribs: the reinforcing ribs are repaired according to the process requirements, and the reinforcing ribs are required to have no fracture marks and smooth surfaces. The length of the reinforcing rib is not shorter than that of the titanium alloy support plate, and the height of the reinforcing rib is not higher than that of the inner cavity of the titanium alloy support plate.

d. Cleaning a titanium alloy support plate and a reinforcing rib: no impurities exist in the cavity of the titanium alloy support plate, the drilled hole and the surface of the reinforcing rib.

e. Argon arc welding positioning reinforcing ribs: and filling the reinforcing rib into the cavity of the titanium alloy support plate along the axial direction of the titanium alloy support plate corresponding to the positions of the holes 1-4. And performing argon arc welding positioning on the titanium alloy support plate and the reinforcing rib in the holes 1-4.

f. Electron beam welding: and (4) respectively carrying out electron beam welding on the filled reinforcing ribs on two sides of the titanium alloy support plate.

g. Repairing pliers: and (4) removing the redundant parts of the reinforcing ribs on the two sides of the titanium alloy support plate by using pliers, so that the surfaces of the two sides of the titanium alloy support plate are smooth.

h. And removing the welding residual stress of the titanium alloy support plate by using ultrasonic waves.

Specifically, the aperture of the holes 1 to 4 in the step b is 2 mm.

The electron beam welding parameters are shown in the following table:

the invention has the following technical characteristics:

1. the reinforcing rib position is accurate. According to the invention, after the holes 1-4 of the titanium alloy support plate are determined by scribing and drilling, the reinforcing rib is filled into the cavity of the titanium alloy support plate, and then the positioning is carried out through argon arc welding, so that the reinforcing rib can be accurately positioned, and a stable effect is achieved.

2. The welding quality of the vacuum electron beam is stable. The vacuum electron beam welding process is simple, easy to operate and stable in welding quality.

3 the reinforcing rib and the titanium alloy support plate have high bonding strength. The titanium alloy has the characteristic of high strength, and the reinforcing ribs are added in the cavities of the titanium alloy support plates, so that the deformation of the titanium alloy support plates is reduced, and the overall mechanical performance of the titanium alloy support plates is improved.

Drawings

The invention is described in further detail below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a drilling location of the present invention;

FIG. 2 is a schematic view of the reinforcing bar filling of the present invention;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of an electron beam welding process for reinforcing bars according to the present invention;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is an effect diagram of the present invention.

Detailed Description

Description of the symbols of the drawings:

1 titanium alloy support plate, 201 holes 1, 202 holes 2, 203 holes 3, 204 holes 4, 3 reinforcing ribs and 4 electron beam welding seams.

Example 1

The purpose of this embodiment is to provide a method for reinforcing an electron beam welding structure of a titanium alloy support plate with a cavity, and the method achieves the purpose of fixing a reinforcing rib by positioning the mounting position of the reinforcing rib and electron beam welding of the reinforcing rib, and prevents structural damage during use.

The embodiment specifically provides a method for reinforcing an electron beam welding structure of a titanium alloy support plate, wherein the titanium alloy support plate is provided with a cavity structure. The method specifically comprises the following steps:

a. and (3) determining the position of the reinforcing rib: the position of the reinforcing rib is determined by drilling a hole in the titanium alloy support plate, and scribing is carried out at the positions L1 and L2 away from the ends of the titanium alloy support plate and D1 and D2 away from the edges, so that the drilling positions, namely the hole 1 to the hole 4, are determined.

b. Drilling: according to the position determined by scribing, holes 1-4 are drilled on the two sides of the titanium alloy support plate respectively, so that the two sides of the titanium alloy support plate are through at the drilling positions.

c. Repairing reinforcing ribs: the reinforcing ribs are repaired according to the process requirements, and the reinforcing ribs are required to have no fracture marks and smooth surfaces. The length of the reinforcing rib is not shorter than that of the titanium alloy support plate, and the height of the reinforcing rib is not higher than that of the inner cavity of the titanium alloy support plate.

d. Cleaning a titanium alloy support plate and a reinforcing rib: no impurities exist in the cavity of the titanium alloy support plate, the drilled hole and the surface of the reinforcing rib.

e. Argon arc welding positioning reinforcing ribs: and filling the reinforcing rib into the cavity of the titanium alloy support plate along the axial direction of the titanium alloy support plate corresponding to the positions of the holes 1-4. And performing argon arc welding positioning on the titanium alloy support plate and the reinforcing rib in the holes 1-4.

f. Electron beam welding: and (4) respectively carrying out electron beam welding on the filled reinforcing ribs on two sides of the titanium alloy support plate.

g. Repairing pliers: and (4) removing the redundant parts of the reinforcing ribs on the two sides of the titanium alloy support plate by using pliers, so that the surfaces of the two sides of the titanium alloy support plate are smooth.

h. And removing the welding residual stress of the titanium alloy support plate by using ultrasonic waves.

Specifically, the aperture of the holes 1 to 4 in the step b is 2 mm.

The electron beam welding parameters are shown in the following table:

the embodiment has the following technical characteristics:

1. the reinforcing rib position is accurate. In the embodiment, after the holes 1-4 are determined by scribing and drilling the titanium alloy support plate, the reinforcing ribs are filled in the cavities of the titanium alloy support plate, and then the reinforcing ribs can be accurately positioned by argon arc welding positioning, so that a stable effect is achieved.

2. The welding quality of the vacuum electron beam is stable. The vacuum electron beam welding process is simple, easy to operate and stable in welding quality.

3 the reinforcing rib and the titanium alloy support plate have high bonding strength. The titanium alloy has the characteristic of high strength, and the reinforcing ribs are added in the cavities of the titanium alloy support plates, so that the deformation of the titanium alloy support plates is reduced, and the overall mechanical performance of the titanium alloy support plates is improved.

Example 2

The invention specifically provides a method for reinforcing an electron beam welding structure of a titanium alloy support plate, wherein the titanium alloy support plate is provided with a cavity structure, and is characterized in that:

a. and (3) determining the position of the reinforcing rib: as shown in FIG. 1, scribing is carried out at positions L1 and L2 away from the ends of the titanium alloy support plate and D1 and D2 away from the ends of the titanium alloy support plate, and drilling positions, namely holes 1 to 4, are determined.

b. Drilling: as shown in figure 1, holes 1-4 are drilled on two sides of the titanium alloy support plate respectively according to the position determined by the scribing, so that the two sides of the titanium alloy support plate are through at the drilling positions. Wherein, the holes 1(201), 2(202), 3(203) and 4(204) are distributed on two sides of the titanium alloy support plate and respectively correspond to the positions.

c. Repairing reinforcing ribs: repairing the reinforcing ribs according to the process requirements, wherein the reinforcing ribs are required to have no fracture marks and smooth surfaces; the length of the reinforcing rib is not shorter than that of the titanium alloy support plate, and the height of the reinforcing rib is not higher than that of the inner cavity of the titanium alloy support plate.

d. Cleaning a titanium alloy support plate and a reinforcing rib: the hollow cavity of the titanium alloy support plate is cleaned, the hole is drilled, the surface of the reinforcing rib is smooth, and impurities are avoided.

e. Argon arc welding positioning reinforcing ribs: as shown in fig. 2 and 3, the reinforcing rib is filled into the cavity of the titanium alloy support plate along the axial direction of the titanium alloy support plate at the position corresponding to the hole 1 to the hole 4; performing argon arc welding positioning on the titanium alloy support plate and the reinforcing rib in the holes 1-4;

f. electron beam welding: as shown in fig. 4 and 5, the filled reinforcing ribs are respectively subjected to electron beam welding on both sides of the titanium alloy support plate.

g. Repairing pliers: after the surface of the electron beam welding seam is visually inspected, the redundant parts of the reinforcing ribs on two sides of the titanium alloy support plate are removed by clamping, so that the surfaces on two sides of the titanium alloy support plate are smooth.

h. And removing the welding residual stress of the titanium alloy support plate by using ultrasonic waves.

The rest of the structure, technical solution, implementation mode and expected effect of the present example are the same as those of example 1.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.