CN204986165U - Inner surface -welding bimetal elbow - Google Patents
Inner surface -welding bimetal elbow Download PDFInfo
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- CN204986165U CN204986165U CN201520735914.2U CN201520735914U CN204986165U CN 204986165 U CN204986165 U CN 204986165U CN 201520735914 U CN201520735914 U CN 201520735914U CN 204986165 U CN204986165 U CN 204986165U
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- elbow
- welding bead
- bimetal
- welding
- overlay cladding
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Abstract
The utility model provides an inner surface -welding bimetal elbow, includes the elbow body, and the elbow body is curved pipeline, and the outside circular arc that leans on of elbow body is called the outer arc, and inboard circular arc is called the inner arc, and the elbow body includes the basic unit, whole build -up welding have the overlay on the medial surface of basic unit, and the overlay comprises the sub - overlay more than two -layer, and the gross thickness of overlay is 2 -4mm, the overlay comprises a plurality of welding beads, the welding bead of overlay is the annular, the technological problem that has solved effectively that ocean engineering, oil shale air to open are adopted and corroded at the occasion technical field pipeline that uses the acid chloride catalyst.
Description
Technical field
The utility model belongs to Machining Technology field, particularly relates to a kind of elbow.
Background technique
At present, along with the fast development of plumbing installations, oil transportation in all parts of the country, gas pipeline are laid the market demand and are day by day increased, particularly ocean engineering, oil shale gas exploitation and in the occasion using acid chloride catalyzer, very high to the anticorrosive wear-resistant of pipe fitting, tensile property, high temperature resistance peeling ability and resisting corrosion of chlorine ion cracking Capability Requirement.The pipe fitting of machinery produced with combination expands with heat and contract with cold when welding, and is unfavorable for welding.
At present, producing what adopt is a kind of technique for overlaying of routine, first inner wall overlaying one deck carbon steel at straight tube, stainless steel, alloyed steel and other material, formula machine shaping is handed over to be tee union by piling the supervisor's cold/hot shaped welded again, wherein, thermoforming is easy to cause plied timber decay resistance to decline, cause the phenomenon of layering and two skins, and antistatic effect declines greatly, and cold forming needs stress-relieving by beat treatment, also easily cause material corrosion performance to decline, do not reach desirable effect.
Model utility content
The purpose of this utility model is to provide a kind of inner wall overlaying bimetal elbow, ensures that elbow can not layering when welding.
The technical solution of the utility model is:
A kind of inner wall overlaying bimetal elbow, comprise elbow body, elbow body is the pipeline of arc, the circular arc in the outer part of elbow body is called outer arc, inner arc is called inner arc, and elbow body comprises basic unit, and on the inner side surface of described basic unit, all heap is welded with overlay cladding, overlay cladding is made up of two-layer above sub-overlay cladding, and the total thickness of overlay cladding is 2-4mm; Overlay cladding is made up of multiple welding bead, and ringwise, some welding beads distribute along the center line of elbow body the welding bead of described overlay cladding successively, and the width of wall scroll welding bead broadens from inner arc gradually to outer arc place.
As the nominal diameter≤DN200 of elbow body, the width of welding bead is 4 ~ 8mm, and the minimum width of welding bead at inner arc place is 4mm, and the Extreme breadth of welding bead at outer arc place is 8mm.
As the nominal diameter >=DN200 of elbow body, the width of welding bead is 3 ~ 6mm, and the minimum width of welding bead at inner arc place is 3mm, and the Extreme breadth of welding bead at outer arc place is 6mm.
The height of welding bead is 1 ~ 2mm.
The thickness of the sub-overlay cladding of individual layer is 1-2mm.
The angular range of elbow body is 30 ~ 135 degree.
Elbow body is 90 degree of elbows.
The material of overlay cladding is stainless steel, nickel-base alloy or abrasion resistance alloy.
Overlay cladding is superposed by two-layer built-up welding and is formed.
The amount of lap of adjacent welding bead is 30% ~ 50%.
The present invention is under the prerequisite not changing pipe fitting performance, at a kind of Ni-Cr solid solution strengthened alloy of the finished product inner annular built-up welding that pushing is good, main intensified element is Mo and Nb, and its feature main manifestations is: 1, from low temperature to high temperature 980 degrees Celsius all there is good stretchability and anti-fatigue performance; 2, there is excellent fatigue strength and resisting corrosion of chlorine ion cracking ability; 3, there is high temperature resistance peeling and oxidability; 4, in seawater and industrial gas environment, produce corrosion hardly, to seawater and salt solution, there is very high corrosion resistance.The utility model belongs to annular built-up welding, meet the high quality of client, high standard demand, and feature is widely used so that its high performance-price ratio, highly corrosion resistant, high wear resistance and high temperature resistance be anti-oxidant etc., achieve significant economic benefit and social benefit, efficiently solve ocean engineering, oil shale gas exploitation and using the technical barrier of occasion technical field corrosive pipeline of acid chloride catalyzer.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing A of Fig. 1;
Fig. 3 is the schematic shapes of wall scroll welding bead;
Fig. 4 is the schematic diagram of welding bead in elbow interior wall.
Embodiment
As shown in Figure 1, 2, the utility model comprises elbow body 1, elbow body is the pipeline of arc, the circular arc in the outer part of elbow body is called outer arc 2, inner arc is called inner arc 3, elbow body comprises basic unit 4, on the inner side surface of described basic unit 4, all heap is welded with overlay cladding 5, overlay cladding 5 material is Ni-Cr solid solution strengthened alloy, main intensified element is Mo and Nb, overlay cladding 5 is made up of (the present embodiment is 2 layers) two-layer above sub-overlay cladding 6, and the thickness of sub-overlay cladding 6 is the total thickness H=2-4mm of 1-2mm, overlay cladding 5.Overlay cladding 5 is made up of multiple welding bead 7, welding bead 7 ringwise, some welding beads 7 distribute successively along the center line of elbow body 1, the amount of lap of adjacent welding bead 7 is 30% ~ 50%, as shown in Figure 3, the width of wall scroll welding bead 7 broadens from inner arc 3 gradually to outer arc 2 place, and as shown in Figure 4, wall scroll welding bead 7 is less than the width at outer arc 2 place at the width at inner arc 3 place.
As the nominal diameter≤DN200 of elbow body 1, the width m=4 ~ 8mm of welding bead 7, welding bead 7 is 4mm at the minimum width at inner arc 3 place, and welding bead 7 is 8mm at the Extreme breadth at outer arc 2 place.
As the nominal diameter >=DN200 of elbow body 1, the width m=3 ~ 6mm of welding bead 7, welding bead 7 is 3mm at the minimum width at inner arc 3 place, and welding bead 7 is 6mm at the Extreme breadth at outer arc 2 place.
Height h=1 ~ the 2mm of welding bead 7.
The angular range of elbow body 1 is 30 ~ 135 degree.Common elbow is 90 degree of elbows, or one eighth bend.The present embodiment is 90 degree of elbows.
Working process: built-up welding welding gun is split type welding gun, inside and outside in fan-shaped swing, the amplitude of oscillation is maximum outside realizing, and inboard is the narrowest, and width gradually changes, and realizes, by wide to narrow, subtracting change gradually by narrow broadening, and ensures inwall each point built-up welding consistency of thickness.
This product is annular built-up welding, compares vertical shape heap and is welded in pipeline radial force more rationally, and more reasonable for fluid scouring corrosion, and the binding site of longitudinal measure is easily washed and corrodes into comb teeth-shaped, affects working life, and circumferential weld does not then exist this phenomenon.
Claims (10)
1. an inner wall overlaying bimetal elbow, comprise elbow body, elbow body is the pipeline of arc, the circular arc in the outer part of elbow body is called outer arc, inner arc is called inner arc, it is characterized in that: elbow body comprises basic unit, and on the inner side surface of described basic unit, all heap is welded with overlay cladding, overlay cladding is made up of two-layer above sub-overlay cladding, and the total thickness of overlay cladding is 2-4mm; Overlay cladding is made up of multiple welding bead, and ringwise, some welding beads distribute along the center line of elbow body the welding bead of described overlay cladding successively, and the width of wall scroll welding bead broadens from inner arc gradually to outer arc place.
2. a kind of inner wall overlaying bimetal elbow according to claim 1, it is characterized in that: as the nominal diameter≤DN200 of elbow body, the width of welding bead is 4 ~ 8mm, and the minimum width of welding bead at inner arc place is 4mm, and the Extreme breadth of welding bead at outer arc place is 8mm.
3. a kind of inner wall overlaying bimetal elbow according to claim 1, it is characterized in that: as the nominal diameter >=DN200 of elbow body, the width of welding bead is 3 ~ 6mm, and the minimum width of welding bead at inner arc place is 3mm, and the Extreme breadth of welding bead at outer arc place is 6mm.
4. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: the height of welding bead is 1 ~ 2mm.
5. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: the thickness of the sub-overlay cladding of individual layer is 1-2mm.
6. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: the angular range of elbow body is 30 ~ 135 degree.
7. a kind of inner wall overlaying bimetal elbow according to claim 6, is characterized in that: elbow body is 90 degree of elbows.
8. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: the material of overlay cladding is Ni-Cr solid solution strengthened alloy.
9. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: overlay cladding is superposed by two-layer built-up welding and formed.
10. a kind of inner wall overlaying bimetal elbow according to claim 1-3 arbitrary, is characterized in that: the amount of lap of adjacent welding bead is 30% ~ 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735914.2U CN204986165U (en) | 2015-09-22 | 2015-09-22 | Inner surface -welding bimetal elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735914.2U CN204986165U (en) | 2015-09-22 | 2015-09-22 | Inner surface -welding bimetal elbow |
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| Publication Number | Publication Date |
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| CN204986165U true CN204986165U (en) | 2016-01-20 |
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| CN201520735914.2U Active CN204986165U (en) | 2015-09-22 | 2015-09-22 | Inner surface -welding bimetal elbow |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605359A (en) * | 2016-02-16 | 2016-05-25 | 湖州久立管件有限公司 | Reinforced elbow and overlay welding method thereof |
| CN110081438A (en) * | 2019-04-01 | 2019-08-02 | 深圳市能源环保有限公司 | Integrated garbage incinerator turning fire grate segment with surfacing layer |
| CN114309127A (en) * | 2020-09-29 | 2022-04-12 | 郑州万达重工股份有限公司 | Inner wall surfacing small-bending-radius bent pipe and forming method thereof |
-
2015
- 2015-09-22 CN CN201520735914.2U patent/CN204986165U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605359A (en) * | 2016-02-16 | 2016-05-25 | 湖州久立管件有限公司 | Reinforced elbow and overlay welding method thereof |
| CN110081438A (en) * | 2019-04-01 | 2019-08-02 | 深圳市能源环保有限公司 | Integrated garbage incinerator turning fire grate segment with surfacing layer |
| CN114309127A (en) * | 2020-09-29 | 2022-04-12 | 郑州万达重工股份有限公司 | Inner wall surfacing small-bending-radius bent pipe and forming method thereof |
| CN114309127B (en) * | 2020-09-29 | 2023-09-26 | 郑州万达重工股份有限公司 | Inner wall surfacing small bending radius bent pipe and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Inner surface -welding bimetal elbow Effective date of registration: 20180621 Granted publication date: 20160120 Pledgee: Bank of Zhengzhou, Longhai branch, Limited by Share Ltd Pledgor: Zhengzhou Wanda's heavy industry limited company Registration number: 2018990000469 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190819 Granted publication date: 20160120 Pledgee: Bank of Zhengzhou, Longhai branch, Limited by Share Ltd Pledgor: Zhengzhou Wanda's heavy industry limited company Registration number: 2018990000469 |