A device for backside gas protection of argon arc welding seam of titanium alloy ring radiator

Abstract

The utility model discloses a titanium alloy annular radiator argon arc welding weld back gas blowing protection's device, including the protection cover, the steel wool and the gas guide pipe of setting in the protection cover inside and setting in the rectifier board of protection cover inside upper end, the protection cover is by the side plate and a bottom plate with hole composition, and the side plate end is provided with the grid tooth of curved radian, and the radian of grid tooth is determined according to the camber surface of annular radiator. The protection gas enters the gas guide pipe by the gas inlet of gas guide pipe bottom, and is discharged by the export pipe with the exhaust hole of top after the shunt pipe, and the protection gas is filled in the steel wool of protection cover after export pipe discharge and is disturbed, and the protection gas after disturbance discharges the air in the protection cover, and finally is discharged evenly through the rectifier board, thereby the back of argon arc welding weld is not oxidized. The side plate end has the grid tooth of bending, and the grid tooth can be bent according to the camber surface of annular radiator, thereby making the protection device adhere to the weld back that needs protection, making the protection sufficient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to titanium alloy argon arc welding weld protection technical field, specifically relates to a kind of titanium alloy annular radiator argon arc welding weld backside gas blowing protection device. BACKGROUND

[0002] Titanium alloy is because of the activity of material, titanium alloy temperature is above 200 DEG C starts to absorb hydrogen, 400 DEG C above starts to absorb oxygen, 600 DEG C above starts to absorb nitrogen. It is easy to react with gas in air in air, and product quality sharply drops, so it is necessary to protect the weld of titanium alloy. In the method for protecting the back of the argon arc weld of the existing titanium alloy annular radiator, a gas blowing pipe is used for tracking protection, which cannot ensure that the weld is in a protective atmosphere at all times, and the protection effect is not good.

[0003] Currently, the argon arc welding back protection of titanium alloy annular radiator usually has the following three problems:

[0004] 1. The protection area is small, and the weld leaves the protection area before the temperature drops to 200 DEG C or above;

[0005] 2. The protection effect is poor, causing the weld quality to sharply drop;

[0006] 3. The protection device has poor adhesion, which causes harmful gases to easily mix into the protection area during the back gas protection of the titanium alloy argon arc weld.

[0007] The Chinese utility model patent with publication number CN214079745U discloses a finned radiator friction stir welding double-side argon gas protection device, which comprises a work platform, a cuboid support body is arranged on the work platform, workpiece fixing devices are arranged on both sides of the support body in width, gas inlets are arranged at both ends of the support body in length, the support body top surface has a workpiece support positioning surface, a gas discharge hole is arranged in the support positioning surface, and a groove is arranged at the position of the gas discharge hole. The support body gas channel design completely accommodates the weld length, so that the welding area of the two butt joint workpieces is in a full-range argon gas protection range, effectively avoiding the generation of joint S curve defects, thereby ensuring the strength of the weld joint; the structure is reasonable, simple to manufacture, convenient to position, high in stability and easy to clean and maintain. The structure of the device applied to the annular radiator can cause poor adhesion and insufficient protection.

[0008] As described above, the existing method for protecting the back of the argon arc weld of the titanium alloy annular radiator has many defects, which leads to poor weld quality. UTILITY MODEL CONTENTS

[0009] To solve the above problems, the utility model aims to provide a device for protecting the back of the argon arc weld of a titanium alloy annular radiator.

[0010] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of titanium alloy annular radiator argon arc welding weld back face gas protection's device, including protective cover, steel wool and gas guide pipe being arranged in the protective cover inside, and rectifier plate being arranged at the upper end in the protective cover inside;

[0011] The protective cover is composed of a side plate and a bottom plate with holes, and the end of the side plate is provided with a curved grid tooth.

[0012] Further, the gas guide pipe includes an inlet pipe and a discharge pipe, and a plurality of shunt pipes are connected between the inlet pipe and the discharge pipe.

[0013] Further, the shunt pipes are connected to the inlet pipe and the discharge pipe by argon arc welding.

[0014] Further, the hole of the gas guide pipe inserted into the bottom plate of the protective cover is connected to the external protective gas.

[0015] Further, the remaining area of the protective cover inside the space occupied by the gas guide pipe is filled with steel wool.

[0016] Further, a rectifier plate is horizontally arranged at the upper end of the steel wool filled area, and the rectifier plate is arranged at the lower area of the grid tooth of the side plate of the protective cover, forming a closed area with the inside of the protective cover.

[0017] Further, a plurality of slits are evenly arranged on the rectifier plate.

[0018] Compared with the prior art, the utility model has the following advantages: the device solves the problem of oxidation of the weld back surface during titanium alloy argon arc welding, improves the weld quality and reliability of the product, and mainly as follows,

[0019] 1. The protective gas enters the gas guide pipe from the gas inlet at the bottom of the gas guide pipe, is discharged from the discharge pipe with exhaust holes above after passing through the shunt pipe, and the protective gas discharged from the discharge pipe is disturbed by the steel wool filled in the protective cover, the disturbed protective gas displaces the air in the protective cover, and finally is uniformly discharged through the rectifier plate, thereby protecting the back surface of the argon arc welding weld from oxidation.

[0020] 2. The end of the side plate is provided with a curved grid tooth, and the grid tooth can be curved according to the curved surface of the annular radiator, so that the protective device fits the back surface of the weld to be protected, and the protection is sufficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A front view of the air blowing protection device on the back side of the argon arc weld of a titanium alloy annular radiator.

[0023] Figure 2 Top view of the air blowing protection device on the back side of the argon arc weld of a titanium alloy annular radiator.

[0024] Figure 3 Side view of the air blowing protection device on the back side of the argon arc weld of a titanium alloy annular radiator.

[0025] Figure 4 This is a top view of the protective cover in this utility model;

[0026] Figure 5 This is a partial detail view of the side panel of the protective cover in this utility model;

[0027] Figure 6 This is a front view of the air guide tube in this utility model;

[0028] Figure 7 This is a side view of the air guide tube in this utility model;

[0029] Figure 8 for Figure 6 AA section view in the middle;

[0030] Figure 9 This is a top view of the rectifier plate in this utility model;

[0031] Figure 10 This is a side view of the rectifier plate in this utility model;

[0032] In the diagram, 1-protective cover; 2-steel wool; 3-air guide pipe; 4-rectifier plate; 5-side plate; 6-bottom plate; 7-diverter pipe; 8-outlet pipe; 9-inlet pipe. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0034] The back of the weld of the titanium alloy annular radiator is mainly protected by a gas blowing pipe during argon arc welding. However, the titanium alloy is active, and oxidation reaction is prone to occur during the argon arc welding process if the protection is not in place, thereby reducing the product quality. The back of the weld is protected by a protection cover for the back of the weld during argon arc welding, so as to solve the problems of small protection area and poor protection effect of the back of the weld during argon arc welding of the existing titanium alloy annular radiator.

[0035] As shown in Figures 1-3 , the device for blowing gas to protect the back of the weld during argon arc welding of a titanium alloy annular radiator comprises a protection cover 1, steel wool 2, a gas guide pipe 3 and a rectifier plate 4. As shown in Figure 4 , the protection cover 1 is composed of four side plates 5 and a bottom plate 6, and the side plates 5 are as shown in Figure 5 . The gas guide pipe 3 is as shown in Figures 6-8 . The rectifier plate is as shown in Figures 9-10 .

[0036] During the working of the protection device, the protection device is close to the back of the welded area, the protection gas enters the gas guide pipe 3 from the inlet pipe 9 at the bottom of the gas guide pipe 3, is discharged from the upper gas discharge pipe 8 with gas holes, is disturbed by the steel wool 2 filled in the protection cover, the disturbed protection gas discharges the air in the protection cover 1, and is finally uniformly discharged through the rectifier plate 4, so that the back of the weld during argon arc welding is not oxidized.

[0037] The protection cover 1 is composed of four side plates 5 and a bottom plate 6 with holes, the connecting parts are fixed by argon arc welding, the end of the side plate 5 is provided with a curved grid tooth, the grid tooth can be curved according to the curved surface of the annular radiator, so that the protection device is close to the back of the weld to be protected.

[0038] The inlet pipe 9 of the gas guide pipe 3 is connected with the external protection gas through the hole in the bottom plate 6 of the protection cover 1.

[0039] The inside of the protection cover 1 is filled with steel wool 2 except the gas guide pipe 3.

[0040] The inlet pipe 9, the shunt pipe 7 and the discharge pipe 8 of the gas guide pipe 3 are connected by argon arc welding, and the discharge pipe 8 is provided with gas guide holes around the radial direction.

[0041] The device for blowing gas to protect the back of the weld during argon arc welding of a titanium alloy annular radiator is introduced in detail, the structure and working principle of the device are described by using specific examples, and the above examples are only used to help understand the method and core idea of the device. It should be pointed out that the device can be improved and modified without departing from the principle of the device, and these improvements and modifications also fall within the protection scope of the device.

Claims

1. An apparatus for backside gas shielding of argon arc welds of titanium alloy annular heat sinks, characterized by: The utility model relates to a protective cover (1), steel wool (2) and air guide pipe (3) arranged inside the protective cover (1) and rectifier plate (4) arranged at the upper end inside the protective cover (1). The protective cover (1) is composed of a side plate (5) and a bottom plate (6) with holes, and the end of the side plate (5) is provided with a grid tooth with a curved arc, and the curvature of the grid tooth is determined according to the curved surface of the annular radiator.

2. The apparatus of claim 1, wherein: The air guide pipe (3) comprises an inlet pipe (9) and a discharge pipe (8), and a plurality of shunt pipes (7) are connected between the inlet pipe (9) and the discharge pipe (8), and a plurality of air outlet holes are formed around the discharge pipe (8).

3. The apparatus of claim 2 wherein: the apparatus further comprises a gas source; and the gas source is connected to the gas supply tube. The shunt pipe (7) is connected with the inlet pipe (9) and the discharge pipe (8) by argon arc welding.

4. The apparatus of claim 1, wherein: The inlet pipe (9) of the air guide pipe (3) is inserted into the hole of the bottom plate (6) of the protective cover (1) and connected with the external protective gas.

5. The apparatus of claim 1, wherein: The remaining area of the protective cover (1) is filled with steel wool (2) except the space occupied by the air guide pipe (3).

6. The apparatus of claim 1, wherein: A rectifier plate (4) is arranged horizontally at the upper end of the steel wool (2) filling area, and the rectifier plate (4) is arranged at the lower area of the grid tooth of the side plate (5) of the protective cover (1), and forms a closed area with the inside of the protective cover (1).

7. The apparatus of claim 1, wherein: A plurality of strip grooves are uniformly arranged on the rectifier plate (4).

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