CN104043674A - Preparation method of yellow stainless steel/titanium alloy bimetal composite tube - Google Patents
Preparation method of yellow stainless steel/titanium alloy bimetal composite tube Download PDFInfo
- Publication number
- CN104043674A CN104043674A CN201410272357.5A CN201410272357A CN104043674A CN 104043674 A CN104043674 A CN 104043674A CN 201410272357 A CN201410272357 A CN 201410272357A CN 104043674 A CN104043674 A CN 104043674A
- Authority
- CN
- China
- Prior art keywords
- tube
- stainless steel
- titanium alloy
- composite tube
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Metal Extraction Processes (AREA)
Abstract
The invention provides a preparation method of a yellow stainless steel/titanium alloy bimetal composite tube, belonging to the technical field of bimetal composite tube preparation. The preparation method is characterized by firstly sleeving two metal tubes subjected to deoiling, acid pickling and polishing with a wire brush together, secondly inserting a core rod into the inner tube, carrying out plastic processing on the two metal tubes once or multiple times, thirdly carrying out finishing and drawing treatment, and finally washing the inner and outer surfaces and cutting the head and the tail, thus obtaining a finished product of the composite tube, wherein the total wall thickness reduction rate during plastic processing is 20-80%; the wall thickness reduction rate of the final pass is 10%; the feeding angle of a plastic processing hammer head is 90 degrees; the discharge speed is 1-5m/min. The stainless steel is used as the inner layer and the outer layer of the composite tube. The method has the advantages that not only can the bimetal composite tube with high bonding strength be obtained but also the equipment is simple, the production flexibility is high and the cost is low.
Description
Technical field:
The present invention relates to a kind of production and processing method of pipe, particularly relate to two yellow stainless steel/titanium alloy composite bimetal pipes.
Technical background:
Along with industry developments such as Aero-Space, ocean engineering, electricity power, petrochemical industries, homogenous material is more and more difficult to meet actual instructions for use in performance, by two or more Material claddings with different performance together, the composite that significantly improves Integrated using performance comes into one's own day by day.Utilize metal composite technology production stratiform multiple tube, make this composite pipe have the advantage of two (many) kinds metal concurrently; Also can, by design thickness rate, adjust the thermal conductivity of this composite pipe shell, intensity, electrical conductivity, the performance indications such as thermal coefficient of expansion are to meet application requirements; And can guarantee that multiple tube has high air-tightness.Owing to having the not available combination property of single metal tube, multiple tube is widely used in pipe, heating furnace pipe and the pipe for apparatus for conveying in the fields such as oil, chemical industry, nuclear industry, medicine equipment, food processing, refrigerating industry.Wherein, typical case's one class bimetallic tubing is that a kind of metal meets requirement of strength or possesses excellent heat conductivity performance, another kind of metal has good anticorrosive or abrasion resistance properties, make like this bimetallic tubing not only there is desired high strength, high heat conductance, but also there is good anticorrosion, the performance such as wear-resistant.
The production technology of composite bimetal pipe mainly contains the hot-working composite algorithms such as the cold working composite algorithms such as drawing, roll extrusion, spinning, hydraulic expanding-forming, vacuumizing method and hot extrusion, thermal diffusion welding, centrifugal casting, but all there is the problems such as complex process, equipment investment is large, energy consumption is high in hot-working composite algorithm, and at high temperature the retention time is longer, interface easily produces compound between brittle metal, affects the serviceability of bimetal tube.
Summary of the invention:
The problem existing in order to solve above-mentioned technique, the present invention proposes and utilize complex technique to obtain the composite billet being integrated by metallurgical binding, again through the process of plastic working (as plastic working, drawing etc.)-annealing work hardening and the residual stress of composite wood (eliminate)-spark machined.Adopt plastic working to turn forging (being called for short " plastic working ") technique to bimetal tube, particularly titanium alloy/stainless steel, stainless steel/aluminium composite pipe carry out the method for combined shaping, the method can not only obtain the composite bimetal pipe that bond strength is high, and equipment is simple, production flexibility is large, cost is low.
In order to achieve the above object, technical scheme of the present invention is: first two kinds of metal tubes after surface treatment are nested together, then in inner tube, insert plug, adopt plastic working bimetal tube to be carried out to the plastic working processing of one or many.Plastic working processing have technique simple, save material, the advantage such as with low cost, be applicable to multiple material processing, be a kind of method of economy, Quick-forming axle class and pipe part.Small size in plastic processing deformation process (small deformation district) repeatedly forges the three-dimensional compressive stress distortion of generation, be conducive to realize large pass deformation (much larger than the pass deformation of drawing and hydraulic expanding-forming), be conducive to produce the multiple tube that bond strength is high.
Concrete steps of the present invention are as follows:
Step 1: pre-treatment.The inner surface of clad metal pipe is carried out to oil removing cleaning, pickling and wire brush polishing; Metal mandrel is carried out to alignment.If surface is cleaner and oxide is less after oil removing, can save pickling and remove the step of oxide-film, directly carry out wire brush polishing, polishing is to expose fresh metallic matrix as standard;
Step 2: sleeve combination.Inner tube is packed in outer tube, the two gap (be called shell clearance, refer to outer tube diameter and inner tube external diameter difference 1/2nd) between 0.1mm～1.0mm, (under the prerequisite that can assemble smoothly, reducing the gap of two pipes) as far as possible; After mandrel outer is evenly coated lubricating oil, insert in inner tube, the gap of plug and inner tube is between 0.1mm～1.0mm.The diameter that the wall ratio of outer tube and inner tube can be determined the bare terminal end of plug according to actual user demand is greater than the diameter of its workspace, also be greater than the internal diameter of outer pipe, thereby the feeding while being conducive to plastic working, and tubing can not extend and be pressed into the bare terminal end of plug because of distortion, thereby has avoided plug cannot deviate from the generation of situation;
Step 3: plastic working is compound.Oxidized for preventing the fresh metal that step 1 polish, should after polishing, carry out as early as possible temperature-room type plasticity processing processing, when plastic working, total wall thickness reduction is between 20%～80%, rolling pass can be 1～6 passage as required, the wall thickness reduction of last passage is in 10% left and right, be conducive to improve surface quality, plastic working tup angle of feed is 90 °, and discharging speed can be between 1～5m/min;
Step 4: finishing processing.Tube surfaces after plastic working can produce many rough hammerings, can apply 1 drawing of gage variation during a pass reduction between 5%～25%, improves dimensional accuracy and the surface quality of tubing.Finally by inside and outside surface clean, cutting head cutting tail, obtains multiple tube finished product.；
Step 5: spark machined becomes the metal composite pipe of multiple special-shaped cross-section.
The invention has the advantages that:
1, manufacturing process of the present invention utilizes the feature that plastic working small deformation district repeatedly forges, is out of shape under three-dimensional compressive stress state, can realize large pass deformation, can process the metal of multiple difficult distortion, and circumferentially evenly compression, can not form breach and crackle because being out of shape the inhomogeneous material that causes, the multiple tube bond strength of producing is higher than the additive method such as drawing and expand tube.
2, the required deformation force of shaping of the present invention is little, and instrument, die life are high, and the required driving force of equipment is little, adopts low power motor just can realize shaping, and operating cost is low.
3, the present invention produces flexibly, technique is simple, do not need expand tube in advance compound, only need sleeve pipe just can directly carry out plastic working shaping, and the size of changing according to the actual requirements plug, forging hammer just can be produced the composite bimetal pipe of different size, various combination.
4, the diameter of plug bare terminal end of the present invention is greater than the diameter of its workspace, also be greater than the internal diameter of outer pipe, thereby can bring in feeding with clamping, and tubing can not extend and not be pressed into the bare terminal end of plug because of distortion, avoid plug cannot deviate from the generation of situation.
Detailed description of the invention:
Below in conjunction with embodiment, technical scheme of the present invention is described further.
Produce yellow stainless steel/titanium alloy composite bimetal pipe.
(1) pre-treatment: yellow stainless steel tube specification is Φ 18.5 × 2.6mm, titanium alloy tube specification is Φ 12.7 × 0.55mm, shell clearance is 0.3mm, diameter of mandrel is Φ 11.4mm (material is mould steel), yellow stainless steel tube and titanium alloy tube are carried out to oil removing with 5%NaOH solution, omit acid pickling step, directly with wire brush, the outer surface of the inner surface of yellow stainless steel tube and titanium alloy tube is polished to fresh metallic matrix.
(2) sleeve combination: the titanium alloy tube of having polished is inserted in yellow stainless steel tube, and mandrel outer inserts in titanium alloy tube after evenly coating lubricating oil.
(3) plastic working is compound: two pipes that assemble are processed 6 passages through temperature-room type plasticity, external diameter situation of change is: 18.5 → 18 → 17.3 → 16.6 → 16 → 15.3 → 14.6mm, gage variation during a pass reduction is respectively 1.6%, 8.1%, 10.5%, 11.8%, 15.6%, 18.4%, total wall thickness reduction is 50.8%, total section shrinkage rate is 57.9%, obtains being of a size of the multiple tube of Φ 14.6 × 1.55mm.
(4) finishing and post processing: slough plug from multiple tube, cut head and afterbody, obtain the composite bimetal pipe that is of a size of Φ 14 × 1.4mm.This area within a jurisdiction face is smooth and fit tightly, and after 20% enlarging, bilayer still fits tightly and cylindrical crack-free phenomenon, intact after flaring test;
(5) step 5: spark machined becomes the metal composite pipe of multiple special-shaped cross-section.
Claims (1)
1. the preparation method of yellow stainless steel/titanium alloy composite bimetal pipe, it is characterized in that first two kinds of metal tubes after surface treatment being nested together, then in inner tube, insert plug, adopt plastic working bimetal tube to be carried out to the plastic working processing of one or many, concrete steps are as follows:
(1) pre-treatment: yellow stainless steel tube specification is Φ 18.5 × 2.6mm, titanium alloy tube specification is Φ 12.7 × 0.55mm, shell clearance is 0.3mm, diameter of mandrel is Φ 11.4mm (material is mould steel), yellow stainless steel tube and titanium alloy tube are carried out to oil removing with 5%NaOH solution, omit acid pickling step, directly with wire brush, the outer surface of the inner surface of yellow stainless steel tube and titanium alloy tube is polished to fresh metallic matrix.
(2) sleeve combination: the titanium alloy tube of having polished is inserted in yellow stainless steel tube, and mandrel outer inserts in titanium alloy tube after evenly coating lubricating oil.
(3) plastic working is compound: two pipes that assemble are processed 6 passages through temperature-room type plasticity, external diameter situation of change is: 18.5 → 18 → 17.3 → 16.6 → 16 → 15.3 → 14.6mm, gage variation during a pass reduction is respectively 1.6%, 8.1%, 10.5%, 11.8%, 15.6%, 18.4%, total wall thickness reduction is 50.8%, total section shrinkage rate is 57.9%, obtains being of a size of the multiple tube of Φ 14.6 × 1.55mm.
(4) finishing and post processing: slough plug from multiple tube, cut head and afterbody, obtain the composite bimetal pipe that is of a size of Φ 14 × 1.4mm.This area within a jurisdiction face is smooth and fit tightly, and after 20% enlarging, bilayer still fits tightly and cylindrical crack-free phenomenon, intact after flaring test;
(5) step 5: spark machined becomes the metal composite pipe of multiple special-shaped cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272357.5A CN104043674A (en) | 2014-06-18 | 2014-06-18 | Preparation method of yellow stainless steel/titanium alloy bimetal composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272357.5A CN104043674A (en) | 2014-06-18 | 2014-06-18 | Preparation method of yellow stainless steel/titanium alloy bimetal composite tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104043674A true CN104043674A (en) | 2014-09-17 |
Family
ID=51497347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410272357.5A Pending CN104043674A (en) | 2014-06-18 | 2014-06-18 | Preparation method of yellow stainless steel/titanium alloy bimetal composite tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104043674A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794523A (en) * | 2018-12-24 | 2019-05-24 | 钢铁研究总院 | A kind of preparation method of rippled interface steel-composite ti pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371413Y (en) * | 1999-04-15 | 2000-03-29 | 宝鸡有色金属加工厂 | Laminated metal composite tube |
| CN1320493A (en) * | 2001-05-18 | 2001-11-07 | 祁国臣 | Manufacturing method of high-bonding-force bimetal composite pipe |
| US20050251987A1 (en) * | 2004-04-12 | 2005-11-17 | Urech Bowman A | System and method for producing bimetallic line pipe |
| JP2007167925A (en) * | 2005-12-26 | 2007-07-05 | Jaroc:Kk | Mandrel-movable type swaging machine |
| CN103286155A (en) * | 2012-05-09 | 2013-09-11 | 深圳市北科航飞生物医学工程有限公司 | Manufacturing method of cobalt/iron composite tube for coronary stent and auxiliary equipment |
-
2014
- 2014-06-18 CN CN201410272357.5A patent/CN104043674A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371413Y (en) * | 1999-04-15 | 2000-03-29 | 宝鸡有色金属加工厂 | Laminated metal composite tube |
| CN1320493A (en) * | 2001-05-18 | 2001-11-07 | 祁国臣 | Manufacturing method of high-bonding-force bimetal composite pipe |
| US20050251987A1 (en) * | 2004-04-12 | 2005-11-17 | Urech Bowman A | System and method for producing bimetallic line pipe |
| JP2007167925A (en) * | 2005-12-26 | 2007-07-05 | Jaroc:Kk | Mandrel-movable type swaging machine |
| CN103286155A (en) * | 2012-05-09 | 2013-09-11 | 深圳市北科航飞生物医学工程有限公司 | Manufacturing method of cobalt/iron composite tube for coronary stent and auxiliary equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794523A (en) * | 2018-12-24 | 2019-05-24 | 钢铁研究总院 | A kind of preparation method of rippled interface steel-composite ti pipe |
| CN109794523B (en) * | 2018-12-24 | 2020-05-26 | 钢铁研究总院 | Preparation method of corrugated interface steel-titanium composite pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103878203B (en) | The preparation method of a kind of composite bimetal pipe | |
| CN103170798B (en) | A kind of processing method of high-quality large-diameter thin-wall metal cylinder | |
| CN104043677A (en) | Preparation method of carbon steel tube/stainless steel tube composite tube | |
| CN107052079B (en) | A kind of forming method of heavy caliber thick wall short radius high temperature alloy elbow | |
| CN103861888B (en) | A kind of preparation method of high-performance copper/composite ti pipe | |
| CN102632094B (en) | Method for improving surface quality of titanium and titanium alloy pipes and drawing die | |
| CN102615138B (en) | Method for manufacturing titanium pipe | |
| CN102463272A (en) | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes | |
| CN103658225B (en) | A kind of non-ferrous metal has seam elbow cooling formation technic | |
| CN103934303A (en) | Preparation method of high performance copper/ aluminum composite pipe | |
| CN102371288A (en) | Preparation method of high-precision and high-strength titanium alloy seamless tube | |
| CN104475479A (en) | Technology for preparing small-bore and thick-wall metal tubes by rotary swaging technique | |
| CN106944494A (en) | A kind of preparation method of heavy caliber thick wall seamless titanium alloy barrel body | |
| CN104607512B (en) | Bend forming method of large-angle pipeline with high precision, large pipe diameter and small bending diameter ratio | |
| CN101934341A (en) | Forging technology of TC4 titanium alloy cylindrical part | |
| CN102773398B (en) | Method for forging slender and thick-walled pipe fittings | |
| CN101716716B (en) | Method for expanding titanium T-shaped pipe | |
| CN109801756B (en) | Preparation method of copper-aluminum composite wire | |
| CN104259331B (en) | The manufacture method of Φ 512mm × 37mm Hi-grade steel coupling blank | |
| CN104174807B (en) | The manufacture method of a kind of heavy caliber titanium thick-wall tube | |
| CN102873126B (en) | Manufacturing method of large-aperture thin-walled seamless steel tube for nuclear power plant | |
| CN104475615B (en) | A kind of preparation method of Double-metal composite finned tube | |
| CN104438428A (en) | Manufacturing method of small-specification TA16 titanium alloy thick-wall pipe | |
| CN104043675A (en) | Preparation method of aluminium alloy/stainless steel bimetal composite tube | |
| CN104043674A (en) | Preparation method of yellow stainless steel/titanium alloy bimetal composite tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |