CN101007386A - Preparation and processing method of heterotypic dissimilar metals composite pipe shell - Google Patents
Preparation and processing method of heterotypic dissimilar metals composite pipe shell Download PDFInfo
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- CN101007386A CN101007386A CN 200710034326 CN200710034326A CN101007386A CN 101007386 A CN101007386 A CN 101007386A CN 200710034326 CN200710034326 CN 200710034326 CN 200710034326 A CN200710034326 A CN 200710034326A CN 101007386 A CN101007386 A CN 101007386A
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Abstract
The invention discloses a special heterologous metal composite pipe shell preparation method which treats the surface of coated metal pipe and metal core rob; It assemblies the metal core rob which is treated in coated metal tube and installs it on the positioning device of bottom, puts the coated metal pipe and metal core rob which are assembled in cylindrical annular tube, the bottom positioning device is installed on the bottom of cylindrical annular tube; setting explosives and electric detonator between the coated metal pipe and cylindrical annular tube uniformly, detonates electric detonator and realizes the explosive recombination of two metal of coated metal pipe and metal core rob in a moment; heat treats the combination rob which is connected and combined by explosion at temperature of 400 DEG C-950DEG C, plastic working the combination rob and prepares the needed combination rob material; machining it with electric spark and preparing various metal composite pipe shells with special cross section. The method has stable use performance, simple production processes, high production efficiency and low manufacturing costs.
Description
Technical field
The present invention relates to a kind of preparation processing method of shell, particularly relate to a kind of preparation processing method of heterotypic dissimilar metals composite pipe shell.
Background technology
Electronic equipment develops towards high-power, microminiaturized direction, and the requirement of the overall characteristics such as (leading) heat of loosing, intensity, rigidity, conduction, thermal expansion matching and processing characteristics of material is improved day by day.Performances such as the special-shaped Can that is used for military projects such as electronics, communication and civil equipment requires to have high strength, high heat conduction, high sealing, single metal is difficult to satisfy this requirement.
Utilize the metal composite technology to prepare the stratiform multiple tube, make this composite pipe have the advantage that two (many) plant metal concurrently; Also can adjust the thermal conductivity of this composite pipe shell by the design thickness rate, intensity, electrical conductivity, performance indications such as thermal coefficient of expansion are to satisfy application requirements; And can guarantee that multiple tube has high air-tightness.
Chinese patent CN2485066Y discloses " the compound bar of a kind of carbon steel core stainless steel ", and pressing last layer stainless steel substrates promptly circumnutates in the outside of carbon steel plug.Compound rod of this stainless steel and single carbon steel bar or stainless steel bars compare, and the surface is comparatively attractive in appearance, and is corrosion-resistant, has higher rigidity intensity; But its interface bond strength is lower, outer layer thickness is inhomogeneous, surface quality is difficult to control.This structural deficiency in use easily comes off compound bar behind the pressurized of interface.Chinese patent CN1513637A discloses the method that technology path that " a kind of production method of full coating copper core compound bar " proposed " compound-heat treatment-plastic working of exploding " prepares composite bar.The existing method of two kinds of metal material tubing combination-annealing-fixing short core print drawing-finishing that adopts prepares the compound special-shaped shell (Wang Jun of copper-Monel, the vacuum electronic technology, 2003, vol.66, no.4) bond strength is low but between satisfactory to both parties genus, and the metal bed thickness is wayward.The existing stainless steel that adopts jacket-pressing method to produce coats copper core bimetallic negative electrode compound bar; It is poor that extruding back two intermetallic bond qualities often appear in the product that this method is produced, in addition two intermetallics not in conjunction with and cause local cracking, stainless steel outer packed bed thickness is inhomogeneous, and product surface quality is difficult to control; Produce bimetallic compound bar with copper core outsourcing titanium material with casting-extruding or other vacuum proliferation-rolling method, the also normal bond strength that occurs between satisfactory to both parties genus is low, and outsourcing titanium layer thickness ununiformity is even, and surface quality is difficult to control.The preparation method of metal composite pipe (rod) material mainly contains at present: centre spinning, hot composite algorithm (as hot extrusion/rolling/drawing), cold forming method (drawing, spinning and roll extrusion etc.), dilatometry, thermal diffusion method etc.Above-mentioned process all is to adopt the solid phase composite algorithm basically: promptly make two metals form binding site on combination interface by plastic deformation, again through diffusion heat treatments, finally form the metallurgical binding at interface.The subject matter that these process routes exist is: owing to be under the high temperature for a long time, easily form crisp hard intermetallic compound between dissimilar metal, bond strength and air-tightness all can significantly reduce; In addition, require the working modulus of first passage big, because this moment, two metals were not that the difference of integral body and two Metal Mechanic Properties is easy to layering.
Summary of the invention
Technical problem to be solved by this invention is that the two intermetallic bond strengths that exist at above-mentioned produced in conventional processes multiple tube are low, cladding uneven thickness and be difficult to problems such as control, shell cross section is single, and firm metallurgical binding, the bond strength height of realization between a kind of composition metal is provided; Cladding thickness is even and be easy to control, and cross section can be processed into the type shape of multiple complexity; Composite pipe shell satisfies intensity and heat conductivility requirement, the preparation processing method of the heterotypic dissimilar metals composite pipe shell that serviceability is stable.
For solving the problems of the technologies described above, the preparation processing method of heterotypic dissimilar metals composite pipe shell provided by the invention is characterized in that this side's work comprises:
(1), the inner surface to the clad metal pipe carries out the oil removing cleaning, cleaning refreshes; Metal mandrel is carried out alignment, and refresh process is carried out on its surface;
(2), follow these steps to assemble the location:
A. be assembled into treated metal mandrel in the clad metal pipe and be installed on the positioner of bottom, the stifled upper top positioner at the top of clad metal pipe and metal mandrel has the gap of 0.5mm-2.5mm between clad metal inside pipe wall and the metal mandrel;
B. clad metal pipe and the metal mandrel that assembles placed in the cylindrical casing, the bottom positioner places the cylindrical casing bottom;
C. be distributed into explosive between clad metal pipe and cylindrical casing equably, it is the thick 10mm-50mm of explosive radially, loads onto the detonator positioner at the cylindrical casing top, inserts electric cap on the detonator positioner;
(3), ignite electric cap, moment realizes that clad metal pipe and two kinds of Metal Explosion of metal mandrel are compound;
(4), to the compound bar of the compound connection of exploding is heat-treated at 400-950 ℃, plastic working (as swage, drawing) obtains required specification composite bar;
(5), spark machined becomes the metal composite shell of multiple special-shaped cross-section.
Described explosive is No. 2 rock ammonium antimony/wood powder/NaCl composite explosives or No. 2 rock explosives or No. 4 rock explosives.
The present invention proposes and utilize the blast complex technique to obtain the compound base that is integrated by metallurgical junction, again through the process of plastic working (as swaging drawing etc.)-annealing (work hardening and the residual stress of elimination composite wood)-spark machined.This method is because composite blank is the integral body that has had firm metallurgical binding, therefore multiple material promptly is out of shape with identical relatively deformation velocity and deflection simultaneously with core in follow-up swaging/drawing deformation process, can avoid the problems such as fracture of mobile, the local cracking of the insoluble interface debonding that produces in deformation process of other complex method, multiple layer or core; And shell can be processed into the cross-sectional type shape of multiple complexity.Thereby the intensity height, heat conductivility and the air-tightness that have guaranteed heterotypic dissimilar metals composite pipe shell are good.
The present invention compared with prior art has firm metallurgical binding, bond strength height between compound bar two metal interfaces; Cladding thickness is even and be easy to control, can be processed into the cross-sectional type shape of multiple complexity; Composite pipe shell satisfies intensity and heat conductivility requirement, and serviceability is stable; Production process is simple and direct, production efficiency height, low cost of manufacture.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is different kinds of metal tubes/compound assembling schematic diagram of rod blast;
Fig. 2 is the cross-sectional structure schematic diagram of dissimilar metal compound bar;
Fig. 3 is the structural representation of heterotypic dissimilar metals composite pipe shell cross section.
The specific embodiment
Embodiment 1:
(1), referring to Fig. 1, the Monel compo pipe that selects wall thickness 1mm is a clad metal pipe 7, and its inner surface is carried out oil removing clean, cleaning refreshes; Selecting diameter is that the non-oxygen copper bar of 5mm is a metal mandrel 6, to its alignment and surperficial refresh process;
(2), follow these steps to assemble the location:
A. be assembled into treated non-oxygen copper bar in the Monel compo pipe and be installed on the positioner 8 of bottom, the stifled upper top positioner 5 at the top of Monel compo pipe and non-oxygen copper bar has the gap of 0.5mm between Monel compo pipe inwall and the non-oxygen copper bar;
B. Monel compo pipe and the non-oxygen copper bar that assembles placed in the cylindrical casing 3, bottom positioner 8 places cylindrical casing 3 bottoms;
C. be distributed into explosive 4 equably between Monel compo pipe and cylindrical casing 3, explosive 4 is No. 4 rock explosives, and it is the thick 10mm of explosive radially, loads onto detonator positioner 2 at cylindrical casing 3 tops, inserts electric cap 1 on detonator positioner 2;
(3), ignite electric cap 1, moment realizes that Monel compo pipe and two kinds of Metal Explosion of non-oxygen copper bar are compound, obtain Monel alloy/oxygen-free copper core bimetallic compound bar billet, its interface shearing bond strength is greater than oxygen-free copper matrix intensity (shear fracture occurs in the copper matrix);
(4), to the compound bar of the compound connection of exploding 400 ℃ of annealing, the processing of swaging; Surface finish, grinding are to required diameter, and finished product cross-sectional structure such as Fig. 2 show;
(5), spark machined becomes special-shaped shell, finished product cross-sectional structure such as Fig. 3 show.
Embodiment 2:
Referring to Fig. 1, Fig. 2 and Fig. 3, its processing method is referring to embodiment 1, and the nickel pipe that selects wall thickness 2.5mm is a clad metal pipe 7, and its inner surface is carried out oil removing clean, and cleaning refreshes; Selecting diameter is that the T2 copper rod of 38mm is a metal mandrel 6, to its alignment and surperficial refresh process; By Fig. 1 assembly is installed then, requires to have between nickel inside pipe wall and the T2 copper rod 2.5mm blast gap; Use No. 2 rock explosive, radially the thick 50mm of explosive ignites electric cap 1; Obtain nickel/copper core bimetallic compound bar billet, its interface shearing bond strength is greater than T2 copper matrix strength (shear fracture occurs in the copper matrix); In 950 ℃ of annealing of temperature, surface finish, grinding are to required diameter, and its cross-sectional structure such as Fig. 2 show.Spark machined becomes special-shaped shell, and the finished product cross-sectional structure is referring to Fig. 3.
Embodiment 3:
Referring to Fig. 1, Fig. 2 and Fig. 3, its processing method is referring to embodiment 1, and the TA2 that selects wall thickness 2.0mm is a clad metal pipe 7, and its inner surface is carried out oil removing clean, and cleaning refreshes; Selecting diameter is that the T2 of 30mm is a metal mandrel 6, to its alignment and surperficial refresh process; By Fig. 1 assembly is installed then, requires to have between TA2 inside pipe wall and the T2 copper rod 1.5mm blast gap; Use rock ammonium antimony/wood powder/NaCl composite explosives No. 2, radially the thick 30mm of explosive ignites electric cap 1; Obtain TA2/T2 bimetallic compound bar billet, its interface shearing bond strength is greater than T2 matrix strength (shear fracture occurs in the T2 matrix); In 700 ℃ of annealing of temperature, surface finish, grinding are to required diameter, and its cross-sectional structure such as Fig. 2 show.Spark machined becomes special-shaped shell, and the finished product cross-sectional structure is referring to Fig. 3.
Claims (2)
1, a kind of preparation processing method of heterotypic dissimilar metals composite pipe shell is characterized in that this side's work comprises:
(1), the inner surface to the clad metal pipe carries out the oil removing cleaning, cleaning refreshes; Metal mandrel is carried out alignment, and refresh process is carried out on its surface;
(2), follow these steps to assemble the location:
A. be assembled into treated metal mandrel in the clad metal pipe and be installed on the positioner of bottom, the stifled upper top positioner at the top of clad metal pipe and metal mandrel has the gap of 0.5mm-2.5mm between clad metal inside pipe wall and the metal mandrel;
B. clad metal pipe and the metal mandrel that assembles placed in the cylindrical casing, the bottom positioner places the cylindrical casing bottom;
C. be distributed into explosive between clad metal pipe and cylindrical casing equably, it is the thick 10mm-50mm of explosive radially, loads onto the detonator positioner at the cylindrical casing top, inserts electric cap on the detonator positioner;
(3), ignite electric cap, moment realizes that clad metal pipe and two kinds of Metal Explosion of metal mandrel are compound;
(4), to the compound bar of the compound connection of exploding is heat-treated at 400-950 ℃, plastic working (as swage, drawing) obtains required specification composite bar;
(5), spark machined becomes the metal composite shell of multiple special-shaped cross-section.
2, the preparation processing method of heterotypic dissimilar metals composite pipe shell according to claim 1 is characterized in that: described explosive is No. 2 rock ammonium antimony/wood powder/NaCl composite explosives or No. 2 rock explosives or No. 4 rock explosives.
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| CN 200710034326 CN101007386A (en) | 2007-01-26 | 2007-01-26 | Preparation and processing method of heterotypic dissimilar metals composite pipe shell |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189326A (en) * | 2011-05-27 | 2011-09-21 | 南京三邦金属复合材料有限公司 | Explosive welding method for titanium-copper composite rod |
| CN102990301A (en) * | 2012-11-27 | 2013-03-27 | 南京三乐电子信息产业集团有限公司 | Method for processing composite pipe shell with 120-degree equally divided straight flutes |
| CN103840142A (en) * | 2014-03-06 | 2014-06-04 | 成羽 | Manufacturing method and application of nickel coated copper composite material and storage battery and spark plug utilizing nickel coated copper composite material as electrode |
| CN104043673A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of hot dip galvanized steel tube/titanium bimetal composite tube |
| CN104043677A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of carbon steel tube/stainless steel tube composite tube |
| CN104043675A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of aluminium alloy/stainless steel bimetal composite tube |
| CN108044228A (en) * | 2018-01-30 | 2018-05-18 | 郑州宇光复合材料有限公司 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
| CN108723574A (en) * | 2018-06-21 | 2018-11-02 | 马晓峰 | Seamless composite steel tube and its production technology |
| CN112975104A (en) * | 2021-02-03 | 2021-06-18 | 沈阳中钛装备制造有限公司 | Preparation method of titanium-tantalum composite tube |
-
2007
- 2007-01-26 CN CN 200710034326 patent/CN101007386A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189326A (en) * | 2011-05-27 | 2011-09-21 | 南京三邦金属复合材料有限公司 | Explosive welding method for titanium-copper composite rod |
| CN102990301A (en) * | 2012-11-27 | 2013-03-27 | 南京三乐电子信息产业集团有限公司 | Method for processing composite pipe shell with 120-degree equally divided straight flutes |
| CN103840142A (en) * | 2014-03-06 | 2014-06-04 | 成羽 | Manufacturing method and application of nickel coated copper composite material and storage battery and spark plug utilizing nickel coated copper composite material as electrode |
| CN103840142B (en) * | 2014-03-06 | 2016-08-24 | 成羽 | The manufacture method of nickel copper-clad composite and application, accumulator, spark plug |
| CN104043673A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of hot dip galvanized steel tube/titanium bimetal composite tube |
| CN104043677A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of carbon steel tube/stainless steel tube composite tube |
| CN104043675A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Preparation method of aluminium alloy/stainless steel bimetal composite tube |
| CN108044228A (en) * | 2018-01-30 | 2018-05-18 | 郑州宇光复合材料有限公司 | A kind of copper-aluminium joint explosion welding apparatus used for transmission line |
| CN108723574A (en) * | 2018-06-21 | 2018-11-02 | 马晓峰 | Seamless composite steel tube and its production technology |
| CN112975104A (en) * | 2021-02-03 | 2021-06-18 | 沈阳中钛装备制造有限公司 | Preparation method of titanium-tantalum composite tube |
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