CN101579701A - Preparation process of copper pipe material for electronic thermotubes - Google Patents
Preparation process of copper pipe material for electronic thermotubes Download PDFInfo
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- CN101579701A CN101579701A CNA2009100652108A CN200910065210A CN101579701A CN 101579701 A CN101579701 A CN 101579701A CN A2009100652108 A CNA2009100652108 A CN A2009100652108A CN 200910065210 A CN200910065210 A CN 200910065210A CN 101579701 A CN101579701 A CN 101579701A
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Abstract
A preparation process of copper pipe material for electronic thermotubes comprises the following steps: casting, squeezing, saw cutting, straightening, rolling, bull block drawing, rewinding, annealing, drawing and packaging. Continuous drawing of tubular products can be realized, the productivity can be extremely improved to produce the copper pipe material meeting the practical requirements of clients for electronic thermotubes with small diameter, high precision, low cost and simple process; the dimensional tolerance of the product meets the requirements of international standard of GB17791-2007 or American standard of ASTM B111, and the hard performance satisfies that Rm is not less than 320MPa and the HV 0.3 is 105-130.
Description
Technical field
The present invention relates to a kind of nonferrous materials processing technology, especially a kind of preparation process of copper pipe material for electronic thermotubes.
Background technology
The electronics heat pipe is owing to have high thermal conductivity, good isothermal, the heat transfer area of cold and hot both sides can change arbitrarily, but advantage such as remotely transferring, temperature controllable is widely used in industries such as aerospace, military project, metallurgy, chemical industry, traffic, machinery and electronics.The electronics heat pipe mainly is divided into two kinds of plough groove type and sintered types with the copper pipe material by the production and processing mode, and the present invention is mainly sintered type electronics heat pipe the copper pipe material is provided.Adopt the copper pipe of existing technique for processing copper pipe preparation, can't satisfy the client and also need adopt 1000 ℃ of left and right sides heating copper tube to be reprocessed into electronics heat pipe and can not be wrinkling and requirement such as smooth surface, because the big present domestic electronics heat pipe of technology difficulty still need a large amount of imports with the copper pipe material through the copper pipe bending of high temperature heating back.
Summary of the invention
For overcoming above-mentioned deficiency, the present invention proposes a kind of preparation process of copper pipe material for electronic thermotubes, changed existing first drawing after annealing preparation technology, adopt the drawing processing mode of annealing earlier before the drawing processing again with big working modulus, reach and reduce dislocation and improve the recrystallization temperature effect, the copper pipe material of preparation can satisfy the client and adopt about 1000 ℃ heating to be reprocessed into the electronics heat pipe and high temperature heating back copper pipe bending is wrinkle resistant and requirement such as smooth surface; This technology has advantages such as production efficiency height, cost is low, technology is easy, and can provide the electronics heat pipe that satisfies client's specific (special) requirements copper pipe material, substitute import, satisfy industry electronics heat pipe copper pipe materials demands such as aerospace, military project, metallurgy, chemical industry, traffic, machinery and electronic technology.
Technical scheme of the present invention: material adopts high-purity oxygen-free copper, and the technological process of production adopts: founding, extruding, sawing, aligning, rolling, operations such as dish draws, rewinding, annealing, drawing, packing; Wherein focus on: founding, annealing and drawing procedure.
In the main technique that the present invention adopts: founding: use vaccum sensitive stove (centreless or core is arranged) to carry out melting and casting ingot blank, casting temperature: 1150～1250 ℃, casting speed: 2.5～3.5m/h; Extruding: adopt extruder and supporting plug to carry out the ingot blank of heating is pushed, extrusion process adopts water seal decortication mode, ingot casting heating-up temperature: 720～880 ℃, extrusion speed: 35～50mm/s, extrusion ratio: 21, press surplus thickness: 25～40mm, ingot casting through the heating furnace heating that extruder is attached troops to a unit is pushed in the hydraulic press recipient, extrusion axis extrudes ingot casting and flows out through mould outlet, mould outlet links to each other with a water-filled tank, and the pipe of extruding directly enters in the tank and cools off fast, can prevent the pipe surface oxidation, and refinement extrudes the crystal grain of pipe, carries out the ingot casting decortication when extruding; Rolling: as to adopt pipe mill and supporting plug that the pipe that extrudes is rolled, rolling feed: 6～14mm, normal mill speed: 120～145 strokes/min, lengthening coefficient: 8～10; Dish draws: adopt spinner block tenside equipment that rolling pipe is carried out the multi-pass disk and stretch, look passage in the drawing process and adopt different lengthening coefficients, lengthening coefficient is controlled between 1.30～1.45, and every time adopts the drawing-die of different size and the floating core head of different size according to different lengthening coefficients, moulding oil kinematic viscosity: 400～900mm outside using in drawing process
2/ s (40 ℃), interior moulding oil kinematic viscosity: 2800～3600mm
2/ s (40 ℃), the modular angle of stretching die: 9 °～12 °, the cone angle of floating core head: 6 °～9 °, the differential seat angle of stretching die and floating core head is 1 °～3 °; Rewinding: the pipe that uses re-reeler that dish is drawn carries out curling again, draw off rate: 300～400m/min, and onlinely carry out eddy current inspection; Annealing: the pipe after adopting bright annealing furnace to rewinding carries out bright annealing, the annealing process heating-up temperature: 360～600 ℃, and roller speed: 100～240mm/min, temperature retention time: 70～130min; Drawing: adopt the associating drawbench that annealed tube blank is carried out last passage stretch process and implement to process with the vertical bar drawing of big working modulus, elongation control is between 1.40～1.60, normal drawing speed: 10～100m/min, and onlinely carry out eddy current inspection, again through smoothing roll aligning and sawing, the applicability requirement that the copper pipe material after guaranteeing to process has certain rigidity, intensity, ductility, glacing flatness and satisfies the client; Packing: pack warehouse-in by customer requirement.
Beneficial effect of the present invention; Carry out vertical bar drawing processing after the employing dish draws and to have improved production efficiency greatly, meet customer need, and reduced process treatment process, further reduced production cost, substitute import electronics heat pipe copper pipe; Adopt the specification limit of the vertical bar product of this process production: φ 4～φ 25X0.3～2mm, its dimensional tolerance meets GB GB17791-2007 or U.S. mark ASTM B111 requirement; Hard state property can satisfy: Rm 〉=320Mpa, HV0.3:105～130.
The specific embodiment
The present invention is further described to provide the specific embodiment below:
Embodiment 1
A kind of hard attitude heat resistant material vertical bar pipe, specification φ 6X 0.30mm, external diameter permissible variation ± 0.03mm, wall thickness permissible variation ± 0.02mm, Rm 〉=320Mpa, Hv:105-130, glacing flatness＜12mm/3000mm;
1. founding: use vaccum sensitive stove to carry out founding, smelting temperature: 1150～1250 ℃, casting speed: 2.5～3.5m/h is cast as the ingot casting of φ 245mm specification.
2. extruding: use extruder to carry out the water seal decortication and with supporting plug ingot casting is pushed, extrusion process is a heating-up temperature: 740～880 ℃, and extrusion speed: 35～50mm/s, extrusion ratio: 21, press surplus thickness: 25～40mm, extrude into the pipe of φ 80X10mm.
3. sawing: use sawing machine that extrusion tube blank is cut off end to end.
4. align: usage level is rectified the sawing pipe is aligned.
5. rolling: as to use pipe mill that the aligning pipe is rolled into φ 39X1.8mm, feed: 12mm, normal mill speed: 120～145 strokes/min, lengthening coefficient: 10.45.
6. dish draws: adopt inverted spinner block tenside equipment that rolling pipe is carried out 11 passage disks and stretch, 1 passage lengthening coefficient is 1.40,2 passage lengthening coefficients are 1.40,3 passage lengthening coefficients are 1.39,4 passage lengthening coefficients are 1.39,5 passage lengthening coefficients are 1.39,6 passage lengthening coefficients are 1.38,7 passage lengthening coefficients are that 1.39,8 passage lengthening coefficients are that 1.38,9 passage lengthening coefficients are 1.36,10 passage lengthening coefficients are 1.38, be stretched to φ 8X0.34mm, the drawing-die of different size and the floating core head of different size, and in drawing process, use inside and outside moulding oil.
7. rewinding: adopt re-reeler that dish trombone slide base is carried out curling once more, draw off rate: 300～400m/min, and onlinely carry out eddy current inspection, roll up wide: 245mm, roll up external diameter＜1100mm.
8. annealing: adopt bright annealing furnace counterweight pipe crimping base to carry out bright annealing.Annealing process is: 360～600 ℃, and roller speed: 100～240mm/min, temperature retention time: 70～130min.
9. drawing: use the associating drawbench that the stretch process that the annealing pipe carries out last passage is implemented to process with the vertical bar drawing of big working modulus, lengthening coefficient: 1.40～1.60, to guarantee that the copper pipe after the drawing processing has certain rigidity, intensity, ductility, normal draw speed: 10～100m/s, and carry out eddy current inspection and level aligning, guarantee that finally the glacing flatness of tubing meets the requirements of the customers.
10. packing: tubing is attached troops to a unit at the associating drawbench and is directly carried out the scale sawing on the equipment, deburrs to the tubing two ends are online then, and tubing falls in the storage rack and dries and directly pack, put in storage delivery after removing sawdust.
Embodiment 2
A kind of hard attitude heat resistant material vertical bar pipe, specification φ 6X0.30mm, external diameter permissible variation ± 0.03mm, wall thickness permissible variation ± 0.02mm, Rm 〉=320Mpa, Hv:105-130, glacing flatness＜12mm/3000mm;
1. founding: use the centreless vaccum sensitive stove to carry out founding, smelting temperature: 1150～1250 ℃, casting speed: 2.5～3.5m/h is cast as the ingot casting of φ 245mm specification.
2. extruding: use extruder to carry out the water seal decortication and with supporting plug ingot casting is pushed, extrusion process is a heating-up temperature: 740～880 ℃, and extrusion speed: 35～50mm/s, extrusion ratio: 21, press surplus thickness: 25～40mm, extrude into the pipe of φ 80X10mm.
3. sawing: use the extruder sawing device of attaching troops to a unit that extrusion tube blank is cut off end to end.
4. align: usage level is rectified the sawing pipe is aligned.
5. rolling: as to use pipe mill that the aligning pipe is rolled into φ 39X1.8mm, feed: 12mm, normal mill speed: 120～145 strokes/min, lengthening coefficient: 10.45.
6. dish draws: adopt inverted disk machine drawing that rolling pipe is carried out 11 passage disks and stretch, 1 passage lengthening coefficient is 1.40,2 passage lengthening coefficients are 1.40,3 passage lengthening coefficients are 1.39,4 passage lengthening coefficients are 1.39,5 passage lengthening coefficients are 1.39,6 passage lengthening coefficients are 1.38,7 passage lengthening coefficients are that 1.39,8 passage lengthening coefficients are that 1.38,9 passage lengthening coefficients are 1.36,10 passage lengthening coefficients are 1.38, be stretched to φ 8X0.34mm, the drawing-die of different size and the floating core head of different size, and in drawing process, use inside and outside moulding oil.
7. rewinding: adopt re-reeler that dish trombone slide base is carried out curling once more, draw off rate: 300～400m/min, and onlinely carry out eddy current inspection, roll up wide: 245mm, roll up external diameter＜1100mm.
8. annealing: adopt bright annealing furnace counterweight pipe crimping base to carry out bright annealing.Annealing process is: 360～600 ℃, and roller speed: 100～240mm/min, temperature retention time: 70～130min.
9. drawing: use the associating drawbench that the stretch process that the annealing pipe carries out last passage is implemented to process with the vertical bar drawing of big working modulus, lengthening coefficient: 1.40～1.60, to guarantee that stretching back copper pipe has certain rigidity, intensity, ductility, normal draw speed: 10～100m/s, and carry out eddy current inspection and the strong 14 rollers aligning of level, guarantee that finally the glacing flatness of tubing meets the requirements of the customers.
10. packing: tubing is attached troops to a unit at the associating drawbench and is directly carried out the scale sawing on the equipment, deburrs to the tubing two ends are online then, and tubing falls in the storage rack and dries and directly pack, put in storage delivery after removing sawdust.
Embodiment 3
A kind of hard attitude heat resistant material vertical bar pipe, specification φ 6X0.30mm, external diameter permissible variation ± 0.03mm, wall thickness permissible variation ± 0.02mm, Rm 〉=320Mpa, Hv:105-130, glacing flatness＜12mm/3000mm.
1. founding: using has the core vaccum sensitive stove to carry out founding, smelting temperature: 1150～1250 ℃, casting speed: 2.5～3.5m/h is cast as the ingot casting of φ 245mm specification.
2. extruding: use extruder to carry out the water seal decortication and with supporting plug ingot casting is pushed, extrusion process is a heating-up temperature: 740～880 ℃, and extrusion speed: 35～50mm/s, extrusion ratio: 21, press surplus thickness: 25～40mm, extrude into the pipe of φ 80X10mm.
3. sawing: use the extruder sawing device of attaching troops to a unit that extrusion tube blank is cut off end to end.
4. align: usage level is rectified the sawing pipe is aligned.
5. rolling: as to use pipe mill that the aligning pipe is rolled into φ 39X1.8mm, feed: 12mm, normal mill speed: 120～145 strokes/min, lengthening coefficient: 10.45.
6. dish draws: adopt inverted disk machine drawing that rolling pipe is carried out 11 passage disks and stretch, 1 passage lengthening coefficient is 1.40,2 passage lengthening coefficients are 1.40,3 passage lengthening coefficients are 1.39,4 passage lengthening coefficients are 1.39,5 passage lengthening coefficients are 1.39,6 passage lengthening coefficients are 1.38,7 passage lengthening coefficients are that 1.39,8 passage lengthening coefficients are that 1.38,9 passage lengthening coefficients are 1.36,10 passage lengthening coefficients are 1.38, be stretched to φ 8X0.34mm, the drawing-die of different size and the floating core head of different size, and in drawing process, use inside and outside moulding oil.
7. rewinding: adopt re-reeler that dish trombone slide base is carried out curling once more, draw off rate: 300～400m/min, and onlinely carry out eddy current inspection, roll up wide: 245mm, roll up external diameter＜1100mm.
8. annealing: adopt bright annealing furnace counterweight pipe crimping base to carry out bright annealing.Annealing process is: 360～600 ℃, and roller speed: 100～240mm/min, temperature retention time: 70～130min.
9. drawing: use the associating drawbench that the stretch process that the annealing pipe carries out last passage is implemented to process with the vertical bar drawing of big working modulus, lengthening coefficient: 1.40～1.60, to guarantee that stretching back copper pipe has certain rigidity, intensity, ductility, normal draw speed: 10～100m/s, and carry out eddy current inspection and the strong 14 rollers aligning of level, guarantee that finally the glacing flatness of tubing meets the requirements of the customers.
10. packing: tubing is attached troops to a unit at the associating drawbench and is directly carried out the scale sawing on the equipment, deburrs to the tubing two ends are online then, and tubing falls in the storage rack and dries and directly pack, put in storage delivery after removing sawdust.
Claims (4)
1, a kind of preparation process of copper pipe material for electronic thermotubes, be by: founding, extruding, sawing, aligning, rolling, dish draws, rewinding, annealing, drawing, packaging process constitute; It is characterized in that: founding, annealing, drawing procedure;
Described founding: use vaccum sensitive stove to carry out founding, smelting temperature: 1150～1250 ℃, casting speed: 2.5～3.5m/h;
Described annealing: adopt bright annealing furnace to carry out bright annealing, annealing process is: 360～600 ℃, and roller speed: 100～240mm/min, temperature retention time: 70～130min;
Described drawing: the vertical bar drawing processing of using the associating drawbench that last passage is stretched and implements the band working modulus, lengthening coefficient: 1.40～1.60.
2, a kind of preparation process of copper pipe material for electronic thermotubes according to claim 1 is characterized in that: adopt and to carry out earlier that the drawing processing mode with big working modulus is prepared electronics heat pipe copper pipe after the bright annealing processing.
3, a kind of preparation process of copper pipe material for electronic thermotubes according to claim 1 is characterized in that: the vaccum sensitive stove that founding is used is the centreless vaccum sensitive stove.
4, a kind of preparation process of copper pipe material for electronic thermotubes according to claim 1 is characterized in that: the vaccum sensitive stove that founding is used is for there being the core vaccum sensitive stove.
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Effective date of registration: 20170810 Address after: 471039 No. 50, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: China Aluminum Luoyang Copper Processing Co., Ltd. Address before: 471039 No. 50, Jianshe Road, Henan, Luoyang Patentee before: Zhonglu Luoyang Copper Industry Co., Ltd. |
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