CN108311542A - A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe - Google Patents
A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe Download PDFInfo
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- CN108311542A CN108311542A CN201810082963.9A CN201810082963A CN108311542A CN 108311542 A CN108311542 A CN 108311542A CN 201810082963 A CN201810082963 A CN 201810082963A CN 108311542 A CN108311542 A CN 108311542A
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- pipe
- tube
- layer composite
- stainless steel
- inner tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- Mechanical Engineering (AREA)
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe, belongs to multiple tube manufacturing process technology field.It is characterized in：（1）Stainless steel tube and carbon steel pipe are chosen respectively as outer, interior, middle tube, 45 ~ 75 ° of inclined-plane is processed into the end face that inside and outside layer is answered to pipe；（2）External pipe internal surface, middle pipe inner and outer surfaces and inner tube outer surface polished, pickling, alcoholic solution are cleaned and dried up；（3）Inner tube set is mounted in middle pipe, then middle pipe is sleeved in outer tube, left and right alignment forms the trapezoidal annular groove in left and right end；（4）The thawing molten steel of high strength stainless steel is poured in protective gas environment, is formed after natural cooling and is covered side,（5）Three-layer composite pipe base is vacuumized and sealed；（6）Three-layer composite pipe base is put into after being heated in heating furnace and is rolled；（7）Carry out subsequent heat treatment.Advantage is：Multiple tube made of this method is easy to weld, and enhances weld seam bond strength, improves production efficiency.
Description
Technical field
The invention belongs to multiple tube manufacturing process technology fields, and in particular to a kind of stainless steel tube rolls three layers with carbon steel pipe
The method of multiple tube.
Background technology
Stainless steel is increasingly widely utilized with carbon steel composite tube, and manufacturing method is used two kinds of unlike materials
Steel plate weld together, be rolled into multiple tube by curling, weld ddge, the shortcomings that this technology is stainless steel layer ten in welded pipe
Divide difficulty, and weld(ing) deposit ingredient is unintelligible, stainless steel cladding structural constituent is unstable etc., make weld strength by shadow
Ring, at the same the base of different-metal material welding, transition zone, coating use different welding methods, cause welding complexity, inefficiency,
Cost increases.
Invention content
It is an object of the present invention to provide a kind of methods of stainless steel tube and carbon steel pipe composite rolling three-layer composite pipe, can be effectively
Overcome disadvantage existing in the prior art.
The invention is realized in this way, it is characterised in that implementation steps are：
（1）As shown in Figure 1, choosing, outer tube and inner tube are respectively outer tube 1 and inner tube 3, middle layer are middle pipe 2, outer tube 1 it is interior
Diameter is d1, the outer diameter of inner tube 3 is D1, the outer diameter of middle pipe 2 is D2, internal diameter d2, and d1=D2, D1=d2, the end of outer tube 1 or so, which is made, inclines
Inclination angle-α=45 ° ~ 75 ° are made in angle α=45 ° ~ 75 °, the end of inner tube 3 or so, and inner and outer pipe length is identical, and middle length of tube is inside and outside tube wall
Shortest length；
（2）The outer surface of the inner surface and inner tube 3 of the inner and outer surfaces of middle pipe 2 and outer tube 1 is polished, pickling, alcohol liquid are washed
Totally and dry up；
（3）Inner tube 3 is sleeved in middle pipe 2, then middle pipe 2 is sleeved in outer tube 1, left and right end alignment forms left and right end ladder
Shape annular groove；
（4）Under protective gas, side 4 is covered to pouring high strength stainless steel in trapezoidal annular groove, and between reserved logical inlet pipe faying face
Vacuum-pumping tube, vacuumized between pipe faying face after cooling, vacuum degree be 1.0 × 10-3Pa, be made into after sealing three layers it is compound
Pipe；
（5）It puts above-mentioned three-layer composite pipe base into heating furnace and is heated to 1200 DEG C ~ 1250 DEG C；
（6）Three-layer composite pipe base after heating is sent into pipe mill to roll, start rolling temperature is 1000 DEG C ~ 1150 DEG C, finish to gauge
Temperature is 930 DEG C ~ 1000 DEG C；Oblique milling nip angle is 10.5 °, and roll off angle is 15 °, and mill speed is 0.5m/s ~ 2m/s；
（7）Subsequent heat treatment is carried out after rolling.
Advantage of the present invention and good effect：
The present invention solves the problems, such as current three-layer metal multiple tube difficulty welding, inefficiency.Pass through the group of three-layer composite pipe
The both ends of base, the three-layer composite pipe produced are high strength stainless steel material of the same race, the welding being more advantageous in this way between multiple tube.
To simplify the welding procedure of three-layer composite pipe, production efficiency is improved.Meanwhile only used it is a small amount of easily weld it is high-strength stainless
Steel saves material as side is covered.
Description of the drawings
Fig. 1 is outer, in, axial schematic cross-section after inner tube suit
Fig. 2 three-layer composite pipe base axial sectional diagrammatical view illustrations
1-outer tube in figure, 2-middle pipes, 3-inner tubes, α-outer tube end inclination angle ,-α-inner pipe ends inclination angle,
4-trapezoidal annular grooves, 5-high strength stainless steels cover side, 6-vacuum-pumping tubes.
Specific implementation：
It is now multiple pipe to produce 304 stainless steels, Q345R carbon steels is for base tubes.As shown in Figure 1：
Implementation steps are：
1. 304 stainless steel tubes of selection are as outer tube 1 and inner tube 3, using Q345R carbon steel pipes as middle pipe 2,1 internal diameter d of outer tube1=
60mm, 3 outer diameter D of inner tube1=55mm, the outer diameter D of middle pipe 22=60mm, internal diameter d2=55mm, 1 end inclination alpha=45 ° of outer tube, inner tube 3
End inclination angle-α=45 °, it is interior, in, the peripheral wall length of outer tube be respectively 500mm, 490mm, 500mm；
2. the outer surface of the inner surface and inner tube 3 of the inner and outer surfaces of middle pipe 2 and outer tube 1 is polished, pickling, alcohol liquid are washed
And drying；
3. by it is interior, in, outer tube be set in together, the alignment of left and right end, as shown in Figure 1；
4. under protective gas environmental protection, in above-mentioned be set in together, in the trapezoidal annular groove at domestic and abroad three-layer pipe or so end
It pours high strength stainless steel and covers side 5, and the reserved vacuum-pumping tube 6 being passed through between faying face, vacuumized between pipe faying face after cooling,
And encrypt envelope；
5. putting above-mentioned three-layer composite pipe base into heating furnace is heated to 1250 DEG C；
6. the three-layer composite pipe base come out of the stove is sent into pipe mill rolling, start rolling temperature is 1150 DEG C, and finishing temperature is 950 DEG C, tiltedly
It is 10.5 ° to roll nip angle, and roll off angle is 15 °, mill speed 1m/s；
After hot rolling, subsequent heat treatment is carried out.
Claims (1)
1. a kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe, it is characterised in that implementation steps are as follows：
1）It is respectively outer tube to choose outer tube and inner tube（1）And inner tube（3）, middle layer be middle pipe（2）, outer tube（1）Internal diameter
For d1, inner tube（3）Outer diameter be D1, middle pipe（2）Outer diameter be D2, internal diameter d2, and d1=D2, D1=d2, outer tube（1）Left and right end system
At inclination alpha=45 ° ~ 75 °, inner tube（3）Inclination angle-α=45 ° ~ 75 ° are made in left and right end, and inner and outer pipe length is identical, middle length of tube be it is interior,
The shortest length of outer tube wall；
2）By middle pipe（2）Inner and outer surfaces and outer tube（1）Inner surface and inner tube（3）Outer surface polished, pickling, wine
Sperm wash clean simultaneously dries up；
3）By inner tube（3）It is sleeved on middle pipe（2）It is interior, then by middle pipe（2）It is sleeved on outer tube（1）Interior, left and right alignment is formed left and right
Hold trapezoidal annular groove；
4）Under protective gas, side is covered to pouring high strength stainless steel in trapezoidal annular groove（4）, and between reserved logical inlet pipe faying face
Vacuum-pumping tube, the sealed after being vacuumized between pipe faying face after cooling forms three-layer composite pipe base；Suction be 1.0 ×
10-3Pa；
5）It puts above-mentioned three-layer composite pipe base into heating furnace and is heated to 1200 DEG C ~ 1250 DEG C；
6）Three-layer composite pipe base after heating is sent into pipe mill to roll, start rolling temperature is 1000 DEG C ~ 1150 DEG C, finish to gauge temperature
Degree is 930 DEG C ~ 1000 DEG C；Oblique milling nip angle is 10.5 °, and roll off angle is 15 °, and mill speed is 0.5m/s ~ 2m/s；
7）Subsequent heat treatment is carried out after rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082963.9A CN108311542A (en) | 2018-01-29 | 2018-01-29 | A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082963.9A CN108311542A (en) | 2018-01-29 | 2018-01-29 | A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108311542A true CN108311542A (en) | 2018-07-24 |
Family
ID=62888008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810082963.9A Pending CN108311542A (en) | 2018-01-29 | 2018-01-29 | A kind of method of stainless steel tube and carbon steel pipe rolling three-layer composite pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN108311542A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116393515A (en) * | 2023-06-09 | 2023-07-07 | 太原理工大学 | Continuous rolling equipment and method for thermal controllable interface of seamless metal composite pipe |
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| CN1210044A (en) * | 1998-08-14 | 1999-03-10 | 侯贤忠 | Carbon steel pipe with inner and outer corrosionproof stainless steel coatings and production thereof |
| CN1368410A (en) * | 2002-03-07 | 2002-09-11 | 胡莉英 | Technology for making composite metal pipe with internal and external attached layers or internal liner layer |
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2018
- 2018-01-29 CN CN201810082963.9A patent/CN108311542A/en active Pending
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| JPS6018205A (en) * | 1983-07-11 | 1985-01-30 | Sumitomo Metal Ind Ltd | Manufacture of titanium-clad steel material |
| JPS62187509A (en) * | 1986-02-13 | 1987-08-15 | Nippon Steel Corp | Production of seamless composite steel pipe |
| CN1210044A (en) * | 1998-08-14 | 1999-03-10 | 侯贤忠 | Carbon steel pipe with inner and outer corrosionproof stainless steel coatings and production thereof |
| CN1368410A (en) * | 2002-03-07 | 2002-09-11 | 胡莉英 | Technology for making composite metal pipe with internal and external attached layers or internal liner layer |
| CN1553071A (en) * | 2003-06-07 | 2004-12-08 | 韩静涛 | Manufacturing method for composite metal pipe |
| CN2648225Y (en) * | 2003-07-02 | 2004-10-13 | 赵惠敏 | Thin layer stainless steel composite steel pipe |
| CN104441822A (en) * | 2014-11-29 | 2015-03-25 | 首钢总公司 | Stainless steel and carbon steel composite plate and production method thereof |
| CN105014311A (en) * | 2015-06-02 | 2015-11-04 | 天津理工大学 | Preparation method for bimetal metallurgy composite pipe of three-layer structure |
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| 张根成等: "冶金复合双金属无缝钢管斜轧扩径模拟", 《锻压技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116393515A (en) * | 2023-06-09 | 2023-07-07 | 太原理工大学 | Continuous rolling equipment and method for thermal controllable interface of seamless metal composite pipe |
| CN116393515B (en) * | 2023-06-09 | 2023-08-04 | 太原理工大学 | Continuous rolling equipment and method for thermal controllable interface of seamless metal composite pipe |
| US11911840B1 (en) | 2023-06-09 | 2024-02-27 | Taiyuan University Of Technology | Continuous rolling device and method continuous rolling device and method with interfacial temperature-force controllability for seamless metal cladding pipe |
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Application publication date: 20180724 |