阅读说明：本技术 一种工业用冷却铜背板摩擦搅拌焊接方法 (Friction stir welding method for industrial cooling copper back plate ) 是由 松本光裕 于 2021-07-12 设计创作，主要内容包括：本发明涉及一种工业用冷却铜背板摩擦搅拌焊接方法,该方法包括：工业用冷却铜背板包括本体和阶梯槽,摩擦搅拌焊接机的搅拌头上设置有焊针,在焊针运行到本体上预设的拔针位置时,继续移动焊针,使焊针朝远离预设的拔针位置的方向移动一段距离,接着将焊针按照一定路线返回至预设的拔针位置,最后拔针。本申请的焊接方法不是直接在预设的拔针位置进行拔针,而是使焊针继续移动一段距离,然后返回至预设的拔针位置,这样可将本体的材料推至预设的拔针位置处,使预设的拔针位置处的材料密度提高,这样可有效防止拔针位置处留下的孔出现空气或液体泄漏的问题。(The invention relates to a friction stir welding method for an industrial cooling copper back plate, which comprises the following steps: the industrial cooling copper back plate comprises a body and a stepped groove, a welding needle is arranged on a stirring head of the friction stir welding machine, when the welding needle runs to a preset needle pulling position on the body, the welding needle is continuously moved, the welding needle is moved for a distance towards a direction away from the preset needle pulling position, then the welding needle is returned to the preset needle pulling position according to a certain route, and finally the welding needle is pulled out. According to the welding method, the welding needle is not directly pulled out from the preset needle pulling position, but the welding needle is enabled to continuously move for a certain distance and then returns to the preset needle pulling position, so that the material of the body can be pushed to the preset needle pulling position, the material density of the preset needle pulling position is improved, and the problem of air or liquid leakage of a hole reserved in the needle pulling position can be effectively solved.)

1. An industrial cooling copper backboard friction stirring welding method is characterized by comprising the following steps:

the industrial cooling copper back plate comprises a body and a stepped groove, a welding needle is arranged on a stirring head of the friction stir welding machine, when the welding needle runs to a preset needle pulling position on the body, the welding needle is continuously moved, the welding needle is moved for a distance towards a direction away from the preset needle pulling position, then the welding needle is returned to the preset needle pulling position according to a certain route, and finally the welding needle is pulled out.

2. The friction stir welding method of an industrial cooled copper backing plate as recited in claim 1, wherein said path is an arc-shaped path.

3. The friction stir welding method for the industrial cooled copper back plate according to claim 1, wherein welding pins are respectively disposed at both ends of a stirring head of the friction stir welding machine, the two welding pins are respectively a first welding pin and a second welding pin, and when the first welding pin is operated, the second welding pin is accommodated in an accommodating chamber disposed on the friction stir welding machine.

4. The friction stir welding method of an industrial cooled copper backing plate as recited in claim 1, wherein the predetermined needle pulling position is on the body on one side of the stepped groove.

5. The friction stir welding method of an industrial cooled copper backing plate according to claim 1, wherein the welding pin has a circular truncated cone shape, and a diameter of a lower end of the welding pin is smaller than a diameter of an upper end thereof.

6. The friction stir welding method of an industrial cooled copper backing plate as recited in claim 5, wherein the stepped groove is closed by a cover plate, and the bottom surface of the welding pin is located a distance above the bottom surface of the cover plate.

7. The friction stir welding method of an industrial cooled copper backing plate as claimed in claim 5, wherein the holes are filled by pressing the material of the body into the holes of the industrial cooled copper backing plate with a welding pin.

8. The friction stir welding method of an industrial cooled copper backing plate as recited in claim 1, wherein the tips of the stirring head are inclined in a direction opposite to the advancing direction of the stirring head.

Technical Field

The invention relates to the field of manufacturing of industrial cooling copper back plates, in particular to a friction stir welding method of an industrial cooling copper back plate.

Background

The industrial cooling copper back plate comprises a body and a stepped groove. The upper portion of ladder groove is the apron standing groove, and the lower part of ladder groove is the cooling trough. The stepped groove is closed by a cover plate. The cover plate and the stepped groove are fixed together by a friction stir welding method.

In the traditional friction stir welding method, a pin pulling position is selected at the final welding position, and the pin pulling position is used for pulling out the welding pin after the welding is finished. After the welding pin is pulled out, a hole is left on the body, and the hole is generally close to the stepped groove. In some cases, air or liquid leaks may occur at the location of the holes.

Disclosure of Invention

In view of the above, it is necessary to provide a friction stir welding method for an industrial cooled copper back plate, which is directed to the problem that the conventional method is prone to air or liquid leakage at the position of the hole.

An industrial cooling copper back plate friction stirring welding method comprises the following steps:

the industrial cooling copper back plate comprises a body and a stepped groove, a welding needle is arranged on a stirring head of the friction stir welding machine, when the welding needle runs to a preset needle pulling position on the body, the welding needle is continuously moved, the welding needle is moved for a distance towards a direction away from the preset needle pulling position, then the welding needle is returned to the preset needle pulling position according to a certain route, and finally the welding needle is pulled out.

According to the welding method, the welding needle is not directly pulled out from the preset needle pulling position, but the welding needle is enabled to continuously move for a certain distance and then returns to the preset needle pulling position, so that the material of the body can be pushed to the preset needle pulling position, the material density of the preset needle pulling position is improved, and the problem of air or liquid leakage of a hole reserved in the needle pulling position can be effectively solved.

In one embodiment, the path is an arcuate path.

In one embodiment, two ends of a stirring head of the friction stir welding machine are respectively provided with a welding pin, the two welding pins are respectively a first welding pin and a second welding pin, and when the first welding pin works, the second welding pin can be accommodated in an accommodating cavity arranged on the friction stir welding machine.

In one embodiment, the preset needle pulling position is arranged on the body on one side of the stepped groove.

In one embodiment, the welding needle is in a circular truncated cone shape, and the diameter of the lower end of the welding needle is smaller than that of the upper end of the welding needle.

In one embodiment, the stepped groove is closed by a cover plate, and the bottom surface of the welding pin is located at a certain distance above the bottom surface of the cover plate.

In one embodiment, the holes are filled by pressing the material of the body into the holes of an industrial cooled copper backing plate with a welding pin.

In one embodiment, the welding pins of the mixing head are inclined in the opposite direction to the advancing direction of the mixing head.

Drawings

Fig. 1 is a schematic diagram of a moving track of a stir head in a friction stir welding method for an industrial cooled copper backing plate according to an embodiment of the present application.

Fig. 2 is a schematic view of the bottom surface of the welding pin of the embodiment of the present application positioned a distance above the bottom surface of the cover plate.

Fig. 3 is a schematic view of a stirring head provided with a first welding pin and a second welding pin at two ends thereof, respectively, according to an embodiment of the present application.

Fig. 4 is a schematic diagram of the embodiment of the present application, in which the material of the body is pressed into the hole of the industrial cooling copper back plate by the welding pin, so that the hole is filled.

Wherein:

110. body 120, ladder groove 130, apron

140. Preset needle pulling position 150, route 160, hole

210. A stirring head 220, a welding pin 221, a first welding pin 222 and a second welding pin

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1, embodiments of the present application provide a friction stir welding method for an industrial cooled copper backing plate, the method comprising:

the industrial cooling copper back plate comprises a body 110 and a stepped groove 120, a welding pin 220 is arranged on a stirring head 210 of the friction stir welding machine, when the welding pin 220 runs to a preset pin pulling position 140 on the body 110, the welding pin 220 is continuously moved, the welding pin 220 is moved for a distance towards a direction away from the preset pin pulling position 140, then the welding pin 220 is returned to the preset pin pulling position 140 according to a certain route 150, and finally the pin is pulled out.

When the welding method is used, after the rotating welding needle 220 moves to the preset needle pulling position 140, the welding needle 220 continues to move for a certain distance under the driving of the stirring head 210, then, under the driving of the stirring head 210, the welding needle 220 returns to the preset needle pulling position 140, so that the material of the body 110 can be pushed to the preset needle pulling position 140, the density of the material at the preset needle pulling position 140 is improved, and finally, the needle is pulled at the position, so that the problem of air or liquid leakage of a hole left at the needle pulling position can be effectively prevented.

Specifically, the route 150 may be set by itself. The route 150 may be set according to the size of the space on the body 110. According to the path 150, the welding pin 220 is moved a distance on the body 110 and then returns to the predetermined pin pulling position 140.

For example, the path 150 may be an arc-shaped path, i.e., the entire path 150 is in the shape of an arc.

Further, an arcuate path of minimum radius may be taken. This is highly efficient.

It is understood that the above-described route 150 may be implemented in other ways. As long as the needle pulling position 140 can be returned to the preset needle pulling position according to the route 150.

Specifically, two ends of the stirring head 210 of the friction stir welding machine are respectively provided with a welding pin, the two welding pins are respectively a first welding pin 221 and a second welding pin 222, and when the first welding pin 221 works, the second welding pin 222 can be accommodated in an accommodating cavity arranged on the friction stir welding machine.

Due to the arrangement of the first welding pin 221 and the second welding pin 222, when the first welding pin 221 is worn to a certain extent and needs to be replaced, the up-down position of the stirring head 210 can be exchanged. The first welding pins 221 are positioned in the accommodating cavities, and the second welding pins 222 are operated.

Specifically, the preset needle pulling position 140 is on the body 110 on one side of the stepped groove 120. As shown in fig. 1, the stepped groove 120 of the body 110 has a U-shape. A preset needle withdrawing position 140 is provided at one side of the end of the U-shaped stepped groove 120. When the stirring head 210 drives the welding pin to move to the position, the stirring head 210 is continuously moved to drive the welding pin to continuously move, and then the welding pin returns to the preset pin pulling position 140 according to the route shown in fig. 1, and finally the pin can be pulled at the maintaining position.

In this embodiment, as shown in fig. 2, the welding pin is in a circular truncated cone shape, and the diameter of the lower end of the welding pin is smaller than that of the upper end of the welding pin.

In this embodiment, the stepped groove 120 is closed by a cover plate 130, and the bottom surface of the welding pin is located a certain distance above the bottom surface of the cover plate 130. With this arrangement, during the movement of the welding pin 220, the material pushed by the welding pin 220 does not enter the stepped groove 120. And does not adversely affect the overall shape of the stepped slot 120. The distance may be set according to the thickness of the cap plate 130 and the position of the stepped groove 120.

In this embodiment, the material of the body 110 is pressed into the holes 160 of the industrial cooling copper back plate by the rotating welding pins, so that the holes 160 are filled.

As shown in fig. 4, some of the holes 160 in the cooled copper backing plate need to be filled. At this time, the material of the body 110 can be pressed into the hole 160 of the industrial cooling copper back plate by moving the soldering pin 220 and passing the rotating soldering pin 220 through one side of the hole 160, so that the hole 160 is filled.

Further, referring to fig. 1, on the moving path of the stirring head 210, the hole 160 on the path may be filled by the movement of the welding pin 220, and after the stirring head 210 returns to the preset pin pulling position 140, the pin is pulled again.

In this embodiment, the welding pins of the stirring head 210 are inclined in the direction opposite to the advancing direction of the stirring head 210. For example, as shown in fig. 4, the arrow indicates the forward direction of the stirring head 210, and the welding pins of the stirring head 210 are inclined in the direction opposite to the forward direction of the stirring head 210.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.