CN108215345A - A kind of nested three extruding metals pipe - Google Patents
A kind of nested three extruding metals pipe Download PDFInfo
- Publication number
- CN108215345A CN108215345A CN201810077097.4A CN201810077097A CN108215345A CN 108215345 A CN108215345 A CN 108215345A CN 201810077097 A CN201810077097 A CN 201810077097A CN 108215345 A CN108215345 A CN 108215345A
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- 239000002184 metal Substances 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 150000002739 metals Chemical class 0.000 title claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 25
- 238000001125 extrusion Methods 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 9
- 238000005097 cold rolling Methods 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000012958 reprocessing Methods 0.000 abstract description 4
- 238000001192 hot extrusion Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 73
- 239000010949 copper Substances 0.000 description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 150000001721 carbon Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000009750 centrifugal casting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Extrusion Of Metal (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention provides a kind of for squeezing three metal nesting pipes of production composite bimetal pipe.The pipe is formed by outer layer, internal layer and the middle layer nesting between ectonexine, and the nested bonding crack at the pipe both ends carries out sealing with weld seam；The material of the middle layer is Cu or its alloy.Thickness is no more than 3mm；The nesting faying face is cone.The three metals nesting extrusion tube blank simple production process, qualification rate is high, and production cost is low.In hot extrusion, the low melting point of Cu is made full use of to form the multiple tube with high metallurgical junction resultant force, the reprocessing production of cold rolling, cold-drawn for small-bore composite seamless pipe lays the foundation.
Description
Technical field
The present invention is applied to bimetal tube production field, provides a kind of three gold medals for extruding production composite bimetal pipe
Belong to nested pipe.
Background technology
In bimetal tube manufacturing field, with the innovation and development of technology, production method is various, have welding, centrifugation,
Nesting, extruding, hot rolling etc..For bimetallic seamless pipe, extruded tube quality is high, is increasingly paid attention to by industrial circle,
But it is higher due to squeezing cost, it is chiefly used in the production for the bimetallic seamless pipe that operating mode is harsh, performance requirement is very high.
The pipe of Thermometal extrusion pipe is mostly produced using centrifugal casting, and Xinxing Cast Pipes Co., Ltd carries out in this respect
Numerous studies experiments, and achieve multinomial patent.But since centrifugal casting bi-metal double extruded stock processing parameter is various, dress
Standby complicated, rejection rate is higher, and production cost remains high.
In order to reduce the production cost of Thermometal extrusion pipe, start bimetallic mechanical nesting pipe occur, after extruding
It can generate metallurgical compound.But it is relatively weak by the extruding hollow forging ectonexine binding force that the pipe is extruded from, large deformation than
Ectonexine is layered in the case of cold rolling, is influenced the product quality of bimetal tube, is scrapped when serious.
Invention content
Technical problem solved by the invention is：
In order to improve the binding force squeezed between hollow forging ectonexine, increase a thin layer low melting point between the ectonexine of nested pipe
Metal layer increases the binding force of ectonexine using the third layer metal melted.
The technical solution adopted in the present invention is：
A kind of three extruding metals pipe is formed by outer layer, internal layer and the middle layer nesting between ectonexine, in the pipe
The nested bonding crack at both ends carries out sealing with weld seam.The material of the middle layer is Cu or its alloy.Thickness is no more than 3mm.Institute
Nested faying face is stated as cone.
Advantageous effect of the invention is：The three extruding metal pipe simple production process of nesting, qualification rate is high, production cost
It is low.In hot extrusion, the low melting point of Cu is made full use of to form the multiple tube with high metallurgical junction resultant force, be small-bore compound nothing
The reprocessing production of cold rolling, the cold-drawn of slit-tube lays the foundation.
Description of the drawings
Fig. 1 is 1 structure diagram of embodiment；
Fig. 2 is 1 nested procedure schematic diagram of embodiment；
Fig. 3 is 2 structure diagram of embodiment；
Fig. 4 is 2 nested procedure schematic diagram of embodiment；
Wherein：1- outer layers, 2- internal layers, 3- weld seams, 4- middle layers.
Specific embodiment
Embodiment 1：304L/Cu/20G.
The present embodiment structure as shown in Figure 1, three extruding metal pipes by outer layer 1, internal layer 2 and between ectonexine in
Interbed 3 is formed, and the material of outer layer 1 is 304L, and the material of internal layer 2 is 20G.4 material of middle layer is copper or its alloy.The extruded tube
The thickness and pipe length of each layer of base ectonexine determines by extruder extrusion cylinder, production tube ectonexine area ratio, intermediate layer thickness
No more than 3mm.
304L/20G is combined into quality control and is mainly used for alkaline boiler, and outer layer 304L is mainly used for lye anti-corrosion, internal layer 20G master
Play the role of increasing heat transfer coefficient, improve heat transfer efficiency, middle layer copper or its alloy have at 2 points：First, in increase
Binding force between outer layer, second is that preventing the carbon atom outer layers in internal layer from spreading.
304L/20G composite finished products pipe is used for a long time under 600-750 DEG C of operating mode, and ectonexine is poor there are carbon atom concn,
In the long-term course of work, the carbon atom of internal layer can be slowly spread in outer layers 304L, so as to influence the anti-corrosive properties of 304L
Can, reduce its service life.And a thin layer Cu is added between the two layers, the diffusion of carbon atom can be effectively prevent.
In addition, since the fusing point of Cu is less than 1100 DEG C, the extrusion temperature of three layers of extrusion tube blank generally at 1200 DEG C or so,
Under this extrusion temperature, the Cu of middle layer has dissolved, and in the extrusion process of three dimension stress, liquid Cu is squeezed with ectonexine
The new atom gone out be diffused weight it is molten, play the role of welding so that the binding force of ectonexine greatly increases, so as to meet greatly
The cold rolling requirement of deformation ratio, is conducive to produce small-bore 304L/20G composite seamless pipes.
Since the thermal conductivity factor of Cu is higher than 20G, so one layer of Cu middle layer very thin in production tube will not reduce 304L/
The heat transfer efficiency of 20G multiple tubes.
It is a variety of that centrifuge tube, hot-rolled pipe, extruded tube, welded tube etc. can be used in the raw material of the outer layer 304L of three extruding metal pipes
The production of the various ways such as casting, rolling, forging can be used in form, the raw material of internal layer 20G, and interlayer Cu or its alloy can be adopted
It is made of modes such as copper facing, nestings.
For ensure it is nested be smoothed out, the faying face of inside and outside layer is processed into circular conical surface, i.e., the outer surface of internal layer,
The inner surface of outer layer is processed using special purpose machine tool, to ensure that the gradient of each layer assembling circular conical surface is consistent.Due to 4 thickness of middle layer
Thin, total thickness is unfavorable for machining less than 3mm, and the mode of copper facing or nesting can be used, i.e., plates one layer of Cu in the outer surface of internal layer 2,
Or be nested on the outer surface of internal layer 2 using the high-ductility of Cu or its alloy, it is fitted close with internal layer.
Before the assembling of ectonexine nesting, a variety of heating measures such as gas furnace, electric furnace, induction furnace can be used to add outer layer 304L
Heat is to 200-500 DEG C.Then it is the big mouth of outer layer 1 is upright upwards, as shown in Fig. 2, internal layer 2 and middle layer 4 are nested in rapidly
In outer layer 1.
The groove of the weld seam 3 at three extruding metal pipe both ends can be processed before nesting, can also be added after nested cooling
Work, finally using stainless steel electrode or welding rod special for special sealing.Its purpose one is when being heated at high temperature before extrusion, prevents ectonexine knot
Conjunction face enters air and faying face is caused to aoxidize；Second is that when squeezing, liquid Cu is prevented to be extruded out.
During nesting, high pressure can be used in coming into full contact between guarantee middle layer and ectonexine, such as very heavy
Top, hydraulic press, hydraulic press etc. are laminated into outer layer by interior, and the tight fit of faying face is obtained using the high-ductility of interlayer Cu.
The three extruding metals pipe simple production process, qualification rate is high, is nearly free from waste product, production cost is low.In heat
During extruding, the low melting point of Cu is made full use of to form the 304L/20G composite seamless pipes with high metallurgical junction resultant force, be small-bore
The cold rolling of 304L/20G composite seamless pipe large deformation, the reprocessing production of cold-drawn lay the foundation.
Embodiment 2: 16Mn /Cu/825.
For the present embodiment structure as shown in figure 3, the material of outer layer 1 is 16Mn, the material of internal layer 2 is 825 nickel-base alloys, intermediate
The material of layer 4 is fine copper or copper alloy.The inside and outside layer thickness and length of three extruding metal pipes are by extruder extrusion cylinder, production tube
For ectonexine area than determining, intermediate layer thickness is no more than 2mm.
16Mn/825 are combined into the conveying that quality control is mainly used for antiseptic fluid, and 825 nickel-base alloys are mainly used for anti-corrosion,
The use intensity of 16Mn principal security pipes.
The effect of middle layer and 1 middle layer of embodiment in the present embodiment is basically identical, when improve ectonexine 16Mn with
Binding force between 825, second is that preventing carbon spread.16Mn/825 are combined into quality control and are chiefly used in room temperature, the anti-blocking of Cu of middle layer
The effect of diffusion is little, unless being used for hot environment for a long time.
The diversified forms such as centrifuge tube, hot-rolled pipe, extruded tube, welded tube can be used in the raw material of outer layer 16Mn or solid blank adds
Work forms, and the production of the various ways such as casting, forging, extruding can be used in 825 nickel-base alloy of internal layer.To reduce the material of internal layer 825
Cost, it is preferred to use tubing is to increase stock utilization.
To ensure being smoothed out for nesting, preferably with the nested mode that faying face is circular conical surface.By the outer surface of internal layer,
The inner surface of outer layer is processed using special purpose machine tool, to ensure that the gradient of assembling circular conical surface is consistent.Since intermediate layer thickness is thin, always
Thickness is unfavorable for machining, the mode of copper facing or nesting can be used, i.e., one layer of Cu is plated in the outer surface of internal layer or is utilized less than 2mm
The high-ductility of Cu or its alloy is nested on the outer surface of internal layer.
Before the assembling of outer layer nesting, a variety of heating measures such as gas furnace, electric furnace, induction furnace can be used to heat outer layer 16Mn
To 200-400 DEG C.By 1 vertical stand-up of outer layer, as shown in Figure 4, then the nickel-base alloy 825 for wrapping up middle layer 4 is managed rapidly
Vertical drop is nested in outer layer 1.
The groove of the weld seam 3 at three extruding metal pipe both ends can be processed before nesting, can also be added after nested cooling
Work, finally using nickel-base welding rod sealing.Its purpose in the same manner as in Example 1, when being heated at high temperature before extrusion, prevents ectonexine from combining
Face enters air and faying face is caused to aoxidize.When squeezing, liquid Cu is prevented to be extruded out.
During nesting, high pressure can be used in coming into full contact between guarantee middle layer and ectonexine, such as very heavy
Top, hydraulic press, hydraulic press etc. are laminated into outer layer by interior, and the tight fit of faying face is obtained using the high-ductility of interlayer Cu.
The three extruding metals pipe simple production process, qualification rate is high, is nearly free from waste product, production cost is low.In heat
During extruding, the low melting point of Cu is made full use of to form the 16Mn/825 composite seamless pipes with high metallurgical junction resultant force, be small-bore
The cold rolling of 16Mn/825 composite seamless pipe large deformation, the reprocessing production of cold-drawn lay the foundation.
Claims (3)
1. a kind of three extruding metal pipes, it is characterised in that：The pipe is by outer layer（1）, internal layer（2）And between ectonexine
Middle layer（3）Nesting forms, the nested bonding crack weld seam at the pipe both ends（3）Carry out sealing, the middle layer（3）
Material be Cu or its alloy.
2. three extruding metals pipe according to claim 1, it is characterised in that：The nesting faying face is cone.
3. three extruding metals pipe according to claim 2, it is characterised in that：The middle layer（3）Thickness is no more than
3mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077097.4A CN108215345A (en) | 2018-01-26 | 2018-01-26 | A kind of nested three extruding metals pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077097.4A CN108215345A (en) | 2018-01-26 | 2018-01-26 | A kind of nested three extruding metals pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108215345A true CN108215345A (en) | 2018-06-29 |
Family
ID=62669148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810077097.4A Withdrawn CN108215345A (en) | 2018-01-26 | 2018-01-26 | A kind of nested three extruding metals pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN108215345A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590275A (en) * | 2020-05-26 | 2020-08-28 | 西安瑞鑫科金属材料有限责任公司 | Preparation method of metal-based composite conductor blank |
| CN113446212A (en) * | 2021-08-05 | 2021-09-28 | 济南隆超石油机械锻造有限公司 | Bimetal cylinder sleeve easy to disassemble and assemble |
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| SU1088901A1 (en) * | 1983-03-05 | 1984-04-30 | Московский Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Институт Стали И Сплавов | Method of producing bimetal tubes by diffusion welding |
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| CN102581250A (en) * | 2012-03-27 | 2012-07-18 | 新兴铸管股份有限公司 | Centrifugally cast TP310Cb/T11 bimetal composite tube blank and method for producing same |
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| CN105499304A (en) * | 2015-12-08 | 2016-04-20 | 昆明理工大学 | Semi-solid forming method of composite pipe |
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| JPH01197081A (en) * | 1988-01-29 | 1989-08-08 | Sumitomo Metal Ind Ltd | Manufacture of high corrosion resistant double metal pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590275A (en) * | 2020-05-26 | 2020-08-28 | 西安瑞鑫科金属材料有限责任公司 | Preparation method of metal-based composite conductor blank |
| CN113446212A (en) * | 2021-08-05 | 2021-09-28 | 济南隆超石油机械锻造有限公司 | Bimetal cylinder sleeve easy to disassemble and assemble |
| CN113446212B (en) * | 2021-08-05 | 2023-01-17 | 济南隆超石油机械锻造有限公司 | Bimetal cylinder sleeve easy to disassemble and assemble |
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