CN202780254U - Transition joint for small-diameter dissimilar material welding - Google Patents
Transition joint for small-diameter dissimilar material welding Download PDFInfo
- Publication number
- CN202780254U CN202780254U CN 201220439042 CN201220439042U CN202780254U CN 202780254 U CN202780254 U CN 202780254U CN 201220439042 CN201220439042 CN 201220439042 CN 201220439042 U CN201220439042 U CN 201220439042U CN 202780254 U CN202780254 U CN 202780254U
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- composite plate
- flanges
- welding
- welded
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Abstract
The utility model relates to a transition joint for small-diameter dissimilar material welding, which is used for welding and connecting the positions between a first material and a second material; the material quality of the first material is different from the second material; the joint is provided with two flanges; the first flange is made of a material identical with the first material; the second flange is made of a material identical with the second material; a composite board made of the first material and the second material is arranged between the two flanges, and the two ends of the composite board are respectively embedded and inserted into the first flange and the second flange; a part of the composite board contacted with the first flange is the first material; a part of the composite board contacted with the second flange is the second material; welding connection is performed on a contact surface between the first flange and the part of the first material of the composite board; welding connection is performed on a contact surface between the second flange and the part of the second material of the composite board; and a groove is formed at the internal diameter of one surface of the at least one of the first flange and the second flange required to be welded with the composite board.
Description
Technical field
The utility model relates to a kind of when welding for different materials, the transit joint that adopts between the material.
Background technology
The interface of two kinds of different materials in the prior art, adopt the flange of both sides bi-material to connect to realize, add the composite plate of bi-material in the middle of the flange of two kinds of different materials, weld to reach the purpose that is connected with composite plate with the one side of flange material same material; The internal diameter of composite plate can be less than the internal diameter of flange when internal diameter was little, and welding is carried out between the additional part of composite plate and flange inner hole surface.
When linking up, can not directly weld the interface of two kinds of different materials, the uneven chemical components of foreign material welding point and the tissue and the heterogeneity of mechanical properties problem that cause therefrom are very outstanding, not only weld seam is often different from the composition of mother metal, even the composition of weld seam itself also is inhomogeneous, this mainly be since when welding dilution rate existence cause.The overall performance impact of the inhomogeneities butt joint of this chemical composition is larger.It is too large to connect corrosivity with two direct shimmings of flange, and poor sealing is so add the purpose that the composite plate of bi-material reaches connection in the middle of the flange with two kinds of different materials.One side with composite plate and flange material same material is welded respectively; The internal diameter of composite plate can be less than the internal diameter of flange when internal diameter was little, and welding is carried out between the additional part of composite plate and flange inner hole surface, has so just formed the foreign material transit joint.
This jointing and welding manner have increased the stress of composite plate to be concentrated, and has reduced the circulation area of medium.Reason is after the additional part of composite plate is welded with the flange inner hole surface, can produce in the welding position welding residual stress, and form structural mutation in the flange inner hole surface, cause the stress of structure to concentrate, the increase of composite plate has also caused reducing of flange endoporus flow area.
Summary of the invention
The one side inner radius bevel that the utility model adopts flange and composite plate to weld, first composite plate and the one side seal weld that needs with the air gun welding, after being soldered with air gun, then the another side of composite plate is docked with other flange, put in the welding another side with welding rod, thereby finish welding job.
Adopt welding point described in the utility model and welding method, be welded to connect so that adopt between flange material and the composite plate same material, lower structural sudden change and cause stress to concentrate the maximization of flange endoporus flow area.
The utility model adopts a kind of foreign material welding transit joint, described joint is used for and will be welded to connect between the first material and the second material, described the first material is different from the second Material texture, described joint has two flanges, described the first flange has the material identical with the first material, described the second flange has the material identical with the second material, the composite plate that has described the first and second materials between two flanges, the composite plate two ends are nested described the first and second flanges inside that is inserted into respectively, the composite plate that wherein contacts with the first flange partly is the first material, the composite plate that contacts with described the second flange partly is the second material, be welded to connect at the first flange and composite plate the first material part contact-making surface, be welded to connect at the second flange and composite plate the second material part contact-making surface, the one side inner radius of at least one flange that wherein said the first and second flanges and composite plate need be welded has groove.Preferably, also have groove in the composite plate inner radius that has the groove position corresponding to the flange face internal diameter, wherein the flange face bevel angle is greater than the composite plate bevel angle.
For example, with respect to vertical discovery, flange face has 40 °-60 ° cut, and composite plate has 10 ° of-15 ° of grooves.The groove of composite plate is as far as possible little, in order to avoid affect the composite bed of composite plate.The groove that while flange and composite plate assemble will be tried one's best greatly, because welding gun will weld at internal diameter, the space is narrower and small, and groove is opened more greatly, and is more outward-dipping to make things convenient for the welder to transport arc and to observe the molten bath.
Preferably adopt securing member to connect between the first and second flanges.
Preferably described securing member is the securing member that screw bolt and nut forms.
The using method of transit joint of the present utility model, to use air gun to carry out seal welding in described composite plate and the first or second flange contact facings, then the contact-making surface at described composite plate and another flange uses air gun to carry out seal welding, and then the composite plate of seal welding is fastenedly connected between employing securing member in the restraint location place of the first and second flanges reservation is to the first flange, the second flange and described flange.
Description of drawings
Fig. 1 is the structural representation of the utility model transit joint one embodiment
The specific embodiment
Below in conjunction with Fig. 1 transit joint described in the utility model is further detailed, as shown in Figure 1, described transit joint has the first flange 1, the second flange 4 and the composite plate 2 between the first flange 1 and the second flange 4, wherein said composite plate 2 has two parts, left half has identical material with 1 contact of the first flange and with the first flange 1, right half and the contact of the second flange 4 and have the material identical with the second flange 4 use air guns to carry out seal welding at the first flange 1, the second flange 4 with described composite plate 2 contact positions 5.Have for settling tight fastening position 3 with part in the corresponding position of the first flange 1 and the second flange 4, the securing member that preferably can adopt screw bolt and nut to form comes fastening transit joint of the present utility model.
Above embodiment further specifies of the present utility model, and those skilled in the art are that above-mentioned explanation is not limited to protection domain of the present utility model with being to be understood that.
Claims (4)
1. a path foreign material welds and uses transit joint, described joint is used for and will be welded to connect between the first material and the second material, it is characterized in that described the first material is different from the second Material texture, described joint has two flanges, the first flange has the material identical with the first material, the second flange has the material identical with the second material, the composite plate that has described the first and second materials between two flanges, the composite plate two ends are nested described the first and second flanges inside that is inserted into respectively, the composite plate that wherein contacts with the first flange partly is the first material, the composite plate that contacts with described the second flange partly is the second material, be welded to connect at the first flange and composite plate the first material part contact-making surface, be welded to connect at the second flange and composite plate the second material part contact-making surface, the one side inner radius of at least one flange that wherein said the first and second flanges and composite plate need be welded has groove.
2. transit joint is used in a kind of path foreign material welding according to claim 1, is characterised in that and adopts securing member to connect between the first and second flanges.
3. transit joint is used in a kind of path foreign material welding according to claim 2, is characterised in that described securing member is the securing member that screw bolt and nut forms.
4. transit joint is used in a kind of path foreign material welding according to claim 1, is characterised in that in the composite plate inner radius that has the groove position corresponding to the flange face internal diameter also have groove, and wherein the flange face bevel angle is greater than the composite plate bevel angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439042 CN202780254U (en) | 2012-08-31 | 2012-08-31 | Transition joint for small-diameter dissimilar material welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439042 CN202780254U (en) | 2012-08-31 | 2012-08-31 | Transition joint for small-diameter dissimilar material welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202780254U true CN202780254U (en) | 2013-03-13 |
Family
ID=47807593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220439042 Expired - Fee Related CN202780254U (en) | 2012-08-31 | 2012-08-31 | Transition joint for small-diameter dissimilar material welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202780254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814593A (en) * | 2012-08-31 | 2012-12-12 | 苏州拓维工程装备有限公司 | Transition joint for welding small-diameter dissimilar materials |
-
2012
- 2012-08-31 CN CN 201220439042 patent/CN202780254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814593A (en) * | 2012-08-31 | 2012-12-12 | 苏州拓维工程装备有限公司 | Transition joint for welding small-diameter dissimilar materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |