CN108515287A - A kind of welding structure and its welding method - Google Patents

Abstract

The present invention provides a welding structure and a welding method thereof. A first annular component and a second annular component are joined by coaxial welding. The welding structure comprises that the first annular component includes a first annular component joined to the second annular component. The joint part; the second ring part includes a second joint part engaged with the first ring part; the first joint part and the second joint part are provided with an X-shaped groove; the first joint part The joint surface of the joint with the second joint part is Z-shaped. A welding method mainly welds the welding structure of the present invention, which mainly welds the first contact surface and the second contact surface of the joint surface respectively, wherein the transition contact surface is used to prevent welding slag from flowing to the first contact surface or the second contact surface , High welding quality, low damage rate, avoid misalignment, high coaxiality after welding, often used in products with high precision.

Description

A kind of welding structure and its welding method

technical field

The invention relates to the field of welding, in particular to a welding structure and a welding method thereof.

Background technique

At present, welding technology is widely used along with the rapid development of metal industry and non-metal industry. Welding technology is mainly the operation method of connecting two or more base metals into a whole by using welding materials under high temperature or high pressure conditions. .

The existing lap joint method of the welding seam adopts an X-shaped groove, and the two ring parts are directly butted, and the butt joint surface here is a plane. This welding method has the following disadvantages: there is only one contact surface when the welds are butt-jointed, and it is easy to miss welding. When welding one side, it is easy to miss welding, and the welding slag flows directly to the other side. When welding the other side, the welding slag needs to be cleaned, which is time-consuming. If the welding slag is not cleaned up, welding defects such as slag inclusions will be caused by the welding slag on the other side; when the ring parts are welded, the butt joint surface uses a contact surface, and the welding is prone to misalignment, and the coaxiality of the ring parts is not good. Good guarantee, increase the damage rate of ring parts.

Contents of the invention

The object of the present invention is to provide a welding structure and its welding method, which are used to solve the problems of missing welding, slag inclusion, unguaranteed coaxiality or high damage rate in the prior art.

To achieve the above object, the present invention provides the following technical solutions:

A welded structure in which a first ring-shaped member and a second ring-shaped member are joined by coaxial welding, the first ring-shaped member including a first engagement portion engaged with the second ring-shaped member;

the second annular member includes a second engaging portion engaged with the first annular member;

The first joint part and the second joint part are provided with X-shaped grooves;

The joint surface of the joint between the first joint part and the second joint part is Z-shaped.

Wherein, the joint surface at the joint between the first joint part and the second joint part includes a first contact surface, a transition contact surface and a second contact surface sequentially connected.

Wherein, the first contact surface forms an angle of 75°-85° with the axis of the first annular component.

Wherein, the transition contact surface forms an angle of 10°-15° with the axis of the first annular component.

Wherein, the second contact surface is perpendicular to the axis of the first ring component.

Wherein, the X-shaped groove includes a first groove connecting the first contact surface and a second groove connecting the second contact surface.

Wherein, the groove angles of the first groove and the second groove are both 85°-95°.

A welding method comprising:

overlapping the first joint portion of the first annular member with the second joint portion of the second annular member;

The first joint part and the second joint part are provided with X-shaped grooves;

The joint surface of the joint between the first joint part and the second joint part is Z-shaped, and includes a first contact surface, a transition contact surface and a second contact surface sequentially connected;

The first contact surface is welded from the first groove connecting the first contact surface in the X-shaped groove, and the second contact surface is welded from the second groove connecting the second contact surface in the X-shaped groove.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above solution, the joint surface of the first joint part of the first ring part of the welding structure of the present invention and the second joint part of the second ring part has a Z-shaped structure, which avoids the phenomenon of missing welding in welding, and has high welding quality and low damage rate. Low; the first ring-shaped part and the second ring-shaped part of the present invention are welded and combined to avoid misalignment, and the coaxiality after welding is high, which is often used in products with high precision.

Description of drawings

Fig. 1 is the sectional view of the welded structure of prior art;

Fig. 2 is a cross-sectional view of the welded structure of the present invention.

Reference signs:

1. The first ring part; 101. The first joint part; 2. The second ring part; 201. The second joint part; 3. The first groove; 4. The first contact surface; 5. The transition contact surface; 6. The second contact surface; 7. The second groove.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The invention aims at the existing problems of missing welding, slag inclusion, unguaranteed coaxiality or high damage rate, and provides a welding structure and a welding method thereof.

As shown in FIG. 2, the embodiment of the present invention provides a welded structure, the first annular component 1 and the second annular component 2 are joined by coaxial welding;

The first ring component 1 includes a first engaging portion 101 engaged with the second ring component 2;

The second ring component 2 includes a second engaging portion 201 engaged with the first ring component 1;

The first joint portion 101 and the second joint portion 201 are provided with an X-shaped groove;

The joint surface of the joint between the first joint part 101 and the second joint part 201 is Z-shaped.

When the first ring part 1 and the second ring part 2 of the present invention are joined by welding, since the joint surface is in a Z shape, missing welding is avoided, the welding quality is high, the coaxiality is good, and misalignment does not occur. It is often used in products with high precision requirements.

Wherein, the joint surface of the joint between the first joint part 101 and the second joint part 201 includes a first contact surface 4 at an angle of 75°-85° with the axis of the first ring component 1, preferably 80° °, the transition contact surface 5 and the second contact surface 6 are sequentially connected by the first contact surface 4, the transition contact surface 5 forms an angle of 10°-15° with the axis of the first ring component 1, the The second contact surface 6 is perpendicular to the axis of the first ring part 1 .

At this time, the first contact surface 4 is sequentially connected to the transition contact surface 5 and the second contact surface 6. When welding the first contact surface 4, welding slag is prevented from flowing to the second contact surface 6, and the second contact surface 6 is welded again. The second contact surface 6 ensures welding quality and saves time and effort.

The transition contact surface 6 is used to prevent welding slag from flowing to the first contact surface 5 or the second contact surface 7 .

Wherein, the X-shaped groove includes a first groove 3 connecting the first contact surface and a second groove 7 connecting the second contact surface.

At this time, the X-shaped groove design is convenient for welding.

Wherein, the groove angles of the first groove 3 and the second groove 7 are both 85°-95°, preferably 90°.

The embodiment of the present invention provides a welding method, comprising:

First, overlap the first joint portion 101 of the first ring component 1 with the second joint portion 201 of the second ring component 2;

At this time, the joint surface of the joint between the first joint part 101 and the second joint part 201 is Z-shaped, and when the first ring part 1 and the second ring part 2 are welded together, the joint surface It is Z-shaped, avoiding missing welding, high welding quality, good coaxiality, and no misalignment. It is often used in products with high precision requirements.

Wherein, the first joint portion 101 and the second joint portion 201 are provided with an X-shaped groove;

Wherein, the joint surface of the joint between the first joint part 101 and the second joint part 201 is Z-shaped, and includes the first contact surface 5, the transition contact surface 6 and the second contact surface 7 connected sequentially;

The transition contact surface 6 can prevent welding slag from flowing to the first contact surface 5 or the second contact surface 7 .

Again, welding the first contact surface 4 from the first groove 3 connecting the first contact surface 4 in the X-shaped groove;

Finally, the second contact surface 6 is welded from the second groove 7 connecting the second contact surface 6 in the X-shaped groove.

At this time, when the first contact surface 4 is welded, welding slag is prevented from flowing to the second contact surface 6, and the second contact surface 6 is welded again to ensure welding quality and save time and effort.

In the welding method of the present invention, the welding sequence of welding the first contact surface 4 and welding the second contact surface 6 does not affect the welding quality.

In the above solution, the joint surface of the first joint part of the first ring part of the welding structure of the present invention and the second joint part of the second ring part has a Z-shaped structure, which avoids the phenomenon of missing welding in welding, and has high welding quality and low damage rate. Low; the first ring-shaped part and the second ring-shaped part of the present invention are welded and combined to avoid misalignment, and the coaxiality after welding is high, which is often used in products with high precision.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "one end", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "equipped with" and "connected" should be interpreted in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediary. Fixed connections can be common technical solutions such as welding, screwing and tightening. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (8)

1. A welded structure in which a first ring-shaped part and a second ring-shaped part are coaxially welded together, characterized in that, the first annular member includes a first engagement portion engaging the second annular member; the second annular member includes a second engaging portion engaged with the first annular member; The first joint part and the second joint part are provided with X-shaped grooves; The joint surface of the joint between the first joint part and the second joint part is Z-shaped. 2. The welded structure according to claim 1, characterized in that, the joint surface of the joint between the first joint part and the second joint part comprises a first contact surface, a transition contact surface and a second contact surface sequentially connected. Two contact surfaces. 3. The welded structure according to claim 2, wherein the first contact surface forms an angle of 75°-85° with the axis of the first ring member. 4. The welding structure according to claim 2, wherein the transitional contact surface forms an angle of 10°-15° with the axis of the first annular member. 5. The welded structure of claim 2, wherein the second contact surface is perpendicular to the axis of the first annular member. 6. The welded structure according to claim 2, wherein the X-shaped groove comprises a first groove connecting the first contact surface and a second groove connecting the second contact surface. 7. The welded structure according to claim 6, wherein the groove angles of the first groove and the second groove are both 85°-95°. 8. A welding method for welding the welded structure according to any one of claims 1-7, characterized in that it comprises: overlapping the first joint portion of the first annular member with the second joint portion of the second annular member; The first joint part and the second joint part are provided with X-shaped grooves; The joint surface of the joint between the first joint part and the second joint part is Z-shaped, and includes a first contact surface, a transition contact surface and a second contact surface sequentially connected; The first contact surface is welded from the first groove connecting the first contact surface in the X-shaped groove, and the second contact surface is welded from the second groove connecting the second contact surface in the X-shaped groove.