阅读说明：本技术 球形舱体赤道缝的电子束焊接接头结构及其焊接方法 (The electro-beam welding joint structure and its welding method of spherical cabin equator seam ) 是由 许德星 熊建坤 文仲波 曹天兰 张慧 郑亮亮 钟玉 吴海峰 杨林 周艳兵 李海涛 于 2019-08-20 设计创作，主要内容包括：本发明公开了一种球形舱体赤道缝的电子束焊接接头结构及其焊接方法,属于球形舱体赤道缝的电子束焊技术领域。本发明的一种球形舱体赤道缝的电子束焊接接头结构,包括上半球壳和下半球壳；上半球壳的外缘向外凸出有上外凸环台、向内凸出有上内凸环台；下半球壳的外缘向外凸出有下外凸环台、向内凸出有下内凸环台,且下内凸环台的内端向上折弯形成有锁底止口；上半球壳组装于下半球壳上,上半球壳与下半球壳之间留有用于焊接时排气的装配间隙；其中,上外凸环台位于下外凸环台上方,组合形成外凸环台接头；上内凸环台位于下内凸环台上方,并位于锁底止口内侧,组合形成内凸环台接头。本发明能够避免球形舱体内壁出现焊接飞溅,确保焊缝质量。(The invention discloses the electro-beam welding joint structures and its welding method of a kind of spherical cabin equator seam, belong to the electron beam welding technical field of spherical cabin equator seam.A kind of electro-beam welding joint structure of spherical cabin equator seam of the invention, including upper hemispherical shell and lower hemisphere shell；The outer rim of upper hemispherical shell has outwardly protruded evagination land, inwardly projecting has had upper convex land；The outer rim of lower hemisphere shell outwardly protruded lower evagination land, it is inwardly projecting have a lower convex land, and the upward bending in inner end of lower convex land is formed with lock end mouth；Upper hemispherical shell is assembled on lower hemisphere shell, the fit-up gap being vented when between upper hemispherical shell and lower hemisphere shell there are for welding；Wherein, upper evagination land is located above lower evagination land, and combination forms evagination land connector；Upper convex land is located above lower convex land, and is located on the inside of lock end mouth, and combination forms convex land connector.The present invention can be avoided wall in spherical tanks body and spatter occurs, it is ensured that weldquality.)

1. a kind of electro-beam welding joint structure of spherical shape cabin equator seam, including upper hemispherical shell (1) and lower hemisphere shell (2), It is characterized in that:

The outer rim of upper hemispherical shell (1) has outwardly protruded evagination land (11), inwardly projecting has had upper convex land (12)；

The outer rim of lower hemisphere shell (2) outwardly protruded lower evagination land (21), it is inwardly projecting have a lower convex land (22), and it is lower in The upward bending in inner end of bulge loop platform (22) is formed with lock end mouth (23)；

Upper hemispherical shell (1) is assembled on lower hemisphere shell (2), and combination forms spherical cabin to be welded, upper hemispherical shell (1) and lower half The fit-up gap C being vented when between spherical shell (2) there are for welding；

Wherein,

Upper evagination land (11) is located above lower evagination land (21), and combination forms evagination land connector (3)；

Upper convex land (12) is located above lower convex land (22), and is located on the inside of lock end mouth (23), and combination forms convex Land connector (4).

2. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: lower outer bulge loop The outer lower portion of platform (22) has outwardly protruded technique land (24).

3. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: upper internal projecting ring The bottom surface of platform (12) and the intersection of lateral surface are equipped with chamfering (13).

4. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: lock end mouth (23) intersection of top surface and medial surface is equipped with root face (5)；Or/and upper convex land (12) top surface and lateral surface friendship Root face (5) are equipped at remittance.

5. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: upper outer bulge loop The lateral surface of platform (11) is concordant with the lateral surface of lower evagination land (21).

6. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: upper internal projecting ring The top surface of platform (12) and the either flush of lock end mouth (22).

7. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: the assembly Clearance C is 0.05mm-0.5mm.

8. the electro-beam welding joint structure of spherical shape cabin equator as described in claim 1 seam, it is characterised in that: upper hemispherical shell (1) and the roughness of the fitting surface of lower hemisphere shell (2) is not more than Ra1.6, and flatness is not more than 0.02mm.

9. a kind of electron beam welding welding method of spherical shape cabin equator seam, it is characterised in that: any using such as claim 1-8 The electro-beam welding joint structure of spherical cabin equator seam described in, makes upper hemispherical shell (1) combine formation with lower hemisphere shell (2) Equator seam (6) is formed at spherical cabin to be welded, upper hemispherical shell (1) and the combination of lower hemisphere shell (2)；

Pass through upper hemispherical shell (1) with lower hemisphere shell (2) from welding on the outside of equator seam (6) using the welding manner of electron beam welding Equator weld seam is connected；

Polishing removal evagination land connector (3) and convex land connector (4).

10. such as the electron beam welding welding method of the described in any item spherical cabin equator seams of claim 1-9, feature exists In: when (6) are stitched in welding equator, using the welding position of horizontal position welding；Wherein, the welding-torch horizontal of electron beam welding is fixed, to be welded Spherical cabin rotation.

Technical field

The present invention relates to a kind of electro-beam welding joint structure, especially a kind of electron beam welding of spherical cabin equator seam Joint structure and its welding method belong to the electron beam welding technical field of spherical cabin equator seam.

Background technique

Frequently with the mode of stick electrode arc welding, this kind of welding manner flexibly and easily lead to for the equator seam welding of spherical cabin It is strong with property, but there are inevitable spatters.Therefore, when the inner wall of spherical cabin is not allow for spatter, hand Work welding electrode arc welding cannot be applicable in.

Certain spherical cabin is made of upper and lower hemispherical Shell, and according to design requirement, which uses electron beam welding equator Seam realizes the assembly connection of upper and lower hemispherical Shell, but wall is not allow for spatter in postwelding spherical tanks body and level weld seam requirement meets 100%RT+100%UT I grade of qualification of flaw detection.

In order to avoid spatter occurs in wall in spherical tanks body, it is ensured that weldquality；Therefore, the invention proposes a bulbs The electro-beam welding joint structure and its welding method of shape cabin equator seam.

Summary of the invention

Goal of the invention of the invention is: in view of the above problems, providing a kind of electronics of spherical cabin equator seam Beam welded joint structure and its welding method, the present invention can be avoided wall in spherical tanks body and spatter occur, it is ensured that weld seam matter Amount.

The technical solution adopted by the invention is as follows:

A kind of electro-beam welding joint structure of spherical shape cabin equator seam, including upper hemispherical shell and lower hemisphere shell；

The outer rim of upper hemispherical shell has outwardly protruded evagination land, inwardly projecting has had upper convex land；

The outer rim of lower hemisphere shell has outwardly protruded lower evagination land, inwardly projecting has had lower convex land, and lower convex land The upward bending in inner end be formed with lock end mouth；

Upper hemispherical shell is assembled on lower hemisphere shell, and combination forms spherical cabin to be welded, upper hemispherical shell and lower hemisphere shell Between there are for welding when the fit-up gap that is vented；Wherein,

Upper evagination land is located above lower evagination land, and combination forms evagination land connector；

Upper convex land is located above lower convex land, and is located on the inside of lock end mouth, and combination forms convex land connector.

When the design for the electro-beam welding joint structure stitched using spherical cabin equator of the invention, it will be apparent that, electron beam Welded joint structure refers to the welding point form before upper hemispherical shell and lower hemisphere shell welding.Due to the weldering in electron beam welding In termination process, so that weld seam front inevitably collapsing for molten pool metal occurs, therefore, have benefited from setting for evagination land connector Meter enables and collapses region and be located at evagination land joint location；During welding, due to there is the recoil of metallic vapour work With so that weld seam front horn mouth will inevitably occur, having benefited from the design of evagination land connector, so that horn mouth region Evagination land joint location can be located at；After the completion of welding, polishing removal evagination land connector, it can be ensured that the quality of weld seam. In view of the influence and electron beam needle point defect of beam power pulsation, have benefited from the design of convex land connector, so that electric Beamlet power pulsations influence area and electron beam needle point defect area can be located at convex land joint location；Welding is completed Afterwards, polishing removal convex land connector, it can be ensured that the quality of weld seam.The design for having benefited from locking end mouth, can be in episphere Shell and lower hemisphere shell play the role of positioning when assembling, in conjunction with the design of fit-up gap C so that upper hemispherical shell and lower hemisphere shell it Between form bleed passage (gas vent is upward), during welding, gas by fit-up gap C finally from upper convex land with The gas vent discharge for locking the formation between end mouth, so that the smooth in exhaust in welding process, avoids the production of weld blowhole defect It is raw.Locking end mouth is to design in the inner end of lower convex land, therefore, the gas vent formed between upper convex land and lock end mouth It is that upward, in the welding process, gas is discharged upwards, and has benefited from locking the design of end mouth, molten metal can be prevented It is splashed to wall in spherical tanks body.If lock end mouth does not design instead of in the inner end of lower convex land, locks the design of end mouth and exist The inner end of upper convex land is easy to appear the case where molten metal is splashed to wall in spherical tanks body then gas vent is directed downwardly；Cause This, it is necessary to it is the design of lock end mouth in the inner end of lower convex land, that is, the upward bending in the inner end of convex land is descended to be formed with lock bottom Seam allowance.After welding, final evagination land connector and convex land connector are to need removal of polishing, so that finally formed The equator section of weld joint of spherical cabin is more uniform, and welding mechanics performance is more uniform, the reliable in quality of weld seam.

Alternative, the outer lower portion of lower evagination land has outwardly protruded technique land.The design of technique land, passes through Technique land makes on spherical cabin clamping to turntable；It can be avoided turntable directly to contact with the outer wall of spherical cabin. Beneficial to the design of technique land, weld seam front molten pool metal is collapsed and can be flowed in technique land, can be avoided and molten bath gold occurs Category flows to or is splashed to the generation of the case where spherical tanks external wall.

Alternative, the bottom surface of upper convex land and the intersection of lateral surface are equipped with chamfering.The design of chamfering can increase The sectional area for the bleed passage that the corner of big upper convex land and lower convex land, lock end mouth is formed, bleed passage are turning Sectional area at angle is larger, is conducive to improve the smoothness being vented when welding.

Alternative, the intersection of the top surface and medial surface of locking end mouth is equipped with root face；Or/and upper convex land The intersection of top surface and lateral surface is equipped with root face.So that the gas vent sectional area formed between upper convex land and lock end mouth becomes Greatly, be conducive to the discharge of gas when welding.

Alternative, the lateral surface of upper evagination land is concordant with the lateral surface of lower evagination land.

It is alternative, the top surface of upper convex land and the either flush of lock end mouth.

Preferably, the fit-up gap C is 0.05mm-0.5mm.That is 0.05mm≤C≤0.5mm, it can be ensured that weld seam Quality.

Preferably, the roughness of the fitting surface of upper hemispherical shell and lower hemisphere shell is not more than Ra1.6, and flatness is not more than 0.02mm.It can ensure the quality of weld seam.

A kind of electron beam welding welding method of spherical shape cabin equator seam, the electronics stitched using above-mentioned spherical cabin equator Beam welded joint structure makes upper hemispherical shell combine to form spherical cabin to be welded, upper hemispherical shell and lower semisphere with lower hemisphere shell Equator seam is formed at the combination of shell；

Using the welding manner of electron beam welding, outside welding is stitched from equator, upper hemispherical shell and lower hemisphere shell is made to pass through equator Weld seam is connected；

Polishing removal evagination land connector and convex land connector.

Further, when welding equator is stitched, using the welding position of horizontal position welding；Wherein, the welding-torch horizontal of electron beam welding is solid Fixed, to be welded spherical cabin rotation.

In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:

The electro-beam welding joint structure and its welding method of a kind of spherical cabin equator seam of the invention；Have benefited from evagination The design of land connector, so that the region that collapses formed when electron beam welding is located at evagination land joint location with horn mouth region； The design for having benefited from convex land connector, enables beam power pulsations affect region and electron beam needle point defect area Positioned at convex land joint location；The design for having benefited from locking end mouth, can play the role of positioning, in conjunction with fit-up gap C's Design, so that bleed passage (gas vent is upward) is formd between upper hemispherical shell and lower hemisphere shell, so that the row in welding process Gas is smooth, avoids the generation of weld blowhole defect, can prevent molten metal and be splashed to wall in spherical tanks body.After welding, The equator section of weld joint of polishing removal evagination land connector and convex land connector, finally formed spherical shape cabin is more uniform, Welding mechanics performance is more uniform, the reliable in quality of weld seam.

Detailed description of the invention

Examples of the present invention will be described by way of reference to the accompanying drawings, in which:

Fig. 1 is the schematic diagram of spherical cabin；

Fig. 2 is the schematic diagram of the electro-beam welding joint structure of spherical cabin equator seam；

Fig. 3 is enlarged drawing at A in Fig. 2；

Fig. 4 is the first deformation schematic diagram of Fig. 3, wherein the top surface of lock end mouth and the intersection of medial surface are equipped with blunt Side 5；

Fig. 5 is second of deformation schematic diagram of Fig. 3, wherein the top surface of upper convex land and the intersection of lateral surface are equipped with Root face；

Fig. 6 is the third deformation schematic diagram of Fig. 3, wherein the top surface of lock end mouth and the intersection of medial surface are equipped with blunt Side；And the top surface of upper convex land and the intersection of lateral surface also are provided with root face；

Fig. 7 is the schematic cross-section when upper hemispherical shell in Fig. 2 is separated with lower hemisphere shell；

When Fig. 8 is that welding finishes, the schematic diagram of equator weld seam.

Marked in the figure: the upper evagination land of 1- upper hemispherical shell, 11-, the upper convex land of 12-, 13- chamfering, 2- lower hemisphere shell, Convex land, 23- lock end mouth, 24- technique land, 3- evagination land connector, 4- convex land under evagination land, 22- under 21- Connector, 5- root face, the equator 6- seam.

Specific embodiment

All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.

Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics .