CN103042366A - Manufacturing technique for copper pipes for magnetrons - Google Patents
Manufacturing technique for copper pipes for magnetrons Download PDFInfo
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- CN103042366A CN103042366A CN2013100119355A CN201310011935A CN103042366A CN 103042366 A CN103042366 A CN 103042366A CN 2013100119355 A CN2013100119355 A CN 2013100119355A CN 201310011935 A CN201310011935 A CN 201310011935A CN 103042366 A CN103042366 A CN 103042366A
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Abstract
The invention discloses a manufacturing technique for copper pipes for magnetrons. The manufacturing technique comprises: (a) horizontal continuous casting; (b) surface milling; (c) three-roller planetary rolling; (d) straight pulling for sizing; (e) cleaning; and (f) checking and storing. Compared with the prior art, raw materials utilized by the manufacturing technique comprise standard cathode copper and high-purity cathode copper, the material utilization is wide, the technical processes are changed into 6 processes from the prior 12 processes, and prior equipment in copper pipe plants can be used for manufacturing. The technical process is short, occupied manufacturing sites are few, the production efficiency is high, the yield is high, the production cost is low, the energy consumption is little, and the applicability is wide.
Description
Technical field
The present invention relates to technical field of nonferrous metal processing, relate in particular to a kind of production technology of copper pipe for magnetic control pipe.
Background technology
Energy-saving and emission-reduction are long-term policies of national industry development, and the development of an enterprise also needs ceaselessly to open up out frontier.Except development air-conditioner pipe and communication tube, to the special pipe development, extremely be necessary for existing copper pipe manufacturer, wherein, the magnetron that is used for micro-wave oven then is good selection.The production technology of original copper pipe for magnetic control pipe is generally: batching-melting-converter-deoxidation-casting-extruding-tube rolling-stretch-strip off the skin-stretch-finishing-inspection warehouse-in is totally 12 procedures, its raw material require to be Cu-CATH-1, complex process, the equipment needed thereby investment is large, floor space is many, the production operation personnel are many, energy consumption is high, the production process waste material is many.
The employed copper pipe specification requirement of magnetron is higher, and it mainly is to composition requirement and dimensional discrepancy:
1), composition requires: O≤5ppm, P≤6ppm, S≤15ppm, Fe≤10ppm, and do not allow grain boundaries that hydrogen embrittlement, boundary segregation phenomenon are arranged.
2), dimensional discrepancy (mm)
| Specification | Outside diameter tolerance | Wall thickness deviation | Eccentricity % |
| 39x1.85(external diameter x wall thickness) | ±0.05 | ±0.05 | ≤0.15 |
3), mechanical property
| The trade mark | State | Tensile strength (N/mm2) | Hardness (HV1) |
| TU1 | Y | ≥315 | ≥80 |
Summary of the invention
Purpose of the present invention provide a kind of under copper pipe factory existence conditions by improve equipment, distribution and adjusting process, produce the production technology of the copper pipe for magnetic control pipe that microwave-oven-heating equipment uses.
The production technology of this copper pipe for magnetic control pipe provided by the invention comprises the steps:
(a) horizontal casting;
(b) mill face;
(c) three-roller planetary is rolling;
(d) vertical pulling scale;
(e) clean;
(f) check warehouse-in.
Described horizontal casting comprises the steps:
(1) selects Cu-CATH-1 or standard cathode copper as batching, guarantee that before reinforced its dry tack free and surface are without the copper beans;
(2) adopt melting furnace to melt, after it fills it up with batching, add charcoal and close fire door, 450～500 ℃ of calcinings 5～7 hours, prevent from entering copper liquid at adition process oxygen before charcoal uses, the charcoal cladding thickness is 100～150mm, and the smelting temperature of melting furnace is 1130～1200 ℃; When the selection standard tough cathode was batching, the phosphor copper that adds P≤6ppm carried out deoxidation;
(3) the copper water in the melting furnace being changed in the holding furnace over to insulation and copper water will tightly protect, and the crystalline flake graphite that adds thickness 100～150mm covers the copper water surface;
(4) adding content of rare earth in holding furnace is that 0.010% rare earth alloy copper carries out deoxygenation and crystal grain thinning;
(5) with horizontal casting out the wall thickness of copper pipe be controlled at 90 ± 1mm, reduce again casting speed to 240～280mm/min and continue casting 30 minutes, return at last normal speed and adopt crystallizer to cool off.
The described face that mills is with ingot casting surface scale mill off, and ingot casting is aligned the depth of cut 0.4～1.2mm.
Described three-roller planetary is rolling to be comprised the steps:
(1) use 3 roller heads to substitute survey tool, to three-roller planetary rolling mill bearing and roller head position adjustments and correction, it is 0.025mm that survey tool requires the tolerance of circular runout, and the tolerance of cylindricity is 0.005mm;
(2) control mill data: main speed 400 ± 10r/min, auxiliary fast 600～800r/min, rate of bending 14～18r/min, rolling speed 8～15 r/min, stable rolling enter pipe speed 0.8～1.5 r/min, propelling pressure 18～22kN, stable rolling exit velocity 0.9～1m/min, pusher dolly uniform motion;
(3) roll out be of a size of (46～48) x(2.4～2.8) copper pipe of mm.
Described vertical pulling scale comprises the steps:
(1) guarantees the wall thickness (WT max-WT min) of rolling rear copper pipe≤0.25mm;
(2) the rolling copper pipe is carried out a time and stretch, the stretch process rate is 1.2～1.8; Guarantee that rolling copper pipe does not swing in the time of the vertical pulling progressive die, the tube reducing that requires according to vertical pulling subtracts the wall thickness requirement, and stretching die is of a size of 39.65 ± 0.02mm, 25～30 ° of angles, floating core head size: microcephaly: 35.95 ± 0.02 mm, major part: 40.7 ± 0.02mm, 26～30 ° of angles.
For realizing that the rolled steel tube that milling train is produced is carried out wall thickness control, reduce rolling deviation, in described vertical pulling scale step 1, with roller head three-roller planetary rolling mill bearing and roller head method for correcting position are comprised the steps:
(1) at first measures three survey tool gaps with thickness gauge, make three survey tool gaps consistent by adjusting;
(2) after being contained in survey tool on the milling train, respectively it is gone to horizontal direction, utilize level meter slowly to adjust and guarantee the survey tool level;
(3) manually control the rotation attachment driving shaft again and make the survey tool rotation, measure one by one survey tool and beat, it is beated at 0.05～0.08mm by adjusting each survey tool of assurance;
(4) after guaranteeing that survey tool is beated, dial gauge is fixed on the auxiliary mould, rotate main transmission main rotary shaft or the subrack of walking around, rotor rack drives three survey tool revolution, and three survey tools maximum of the number of degrees from dial gauge is relative to each other in 0.08～0.1mm; If difference is larger, then adjust separately one or two survey tool, it is met the demands;
(5) load onto three roller heads, measure the gap between three roller heads, make three roller head gaps consistent with step 1 Measuring Time gap by thickness gauge;
(6) the rolling calibration coupon of selection 46～48mm rotates attachment driving shaft three rolls is contacted gently with the calibration coupon, and can twitch back and forth.
Compared with prior art, the raw material of employing of the present invention comprise standard standard cathode copper and Cu-CATH-1, and stock utilization is wide, and technological process also becomes six roads by existing 12 roads, can utilize copper pipe factory existing equipment to produce.Technological process of the present invention is short, takies production site few, and production efficiency is high, and lumber recovery is high, and production cost is low, less energy consumption, and adaptability is extensive.
Description of drawings
Fig. 1 is the schematic diagram that the roller head among the present invention substitutes survey tool.
The specific embodiment
Embodiment 1
1, horizontal casting
(1) select Cu-CATH-1 as batching, guarantee its dry tack free and surface without the copper beans before reinforced, all furnace charges and coverture all will carry out drying operation;
(2) above-mentioned batching being put into melting furnace melts, fill it up with rear interpolation charcoal and close fire door until batching, the charcoal cladding thickness is 100～150mm, the smelting temperature of melting furnace is 1130～1200 ℃, prevent from entering copper liquid at adition process oxygen, calcine 5～7 hours (containing intensification/cooling) at 450～500 ℃ before charcoal uses;
(3) the copper water in the melting furnace being changed in the holding furnace over to insulation and copper water will tightly protect, and the crystalline flake graphite that adds thickness 100～150mm covers the copper water surface;
(4) adding content of rare earth in holding furnace is that 0.010% rare earth alloy copper carries out deoxygenation and crystal grain thinning;
(5) with horizontal casting out the wall thickness of copper pipe be controlled at 90 ± 1mm, reduce again casting speed to 240～280mm/min and continue casting 30 minutes, return at last normal speed, production process is not changed chute and is avoided sneaking into oxygen, adopts crystallizer to cool off.
2, mill face
With ingot casting surface scale mill off, and ingot casting aligned the depth of cut 0.4～1.2mm.
3, three-roller planetary is rolling
(1) use 3 roller heads to substitute survey tool, to three-roller planetary rolling mill bearing and roller head position adjustments and correction, it is 0.025mm that survey tool requires the tolerance of circular runout, and the tolerance of cylindricity is 0.005mm;
(2) control mill data: main speed 400 ± 10r/min, auxiliary fast 600～800r/min, rate of bending 14～18r/min, rolling speed 8～15 r/min, stable rolling enter pipe speed 0.8～1.5 r/min, propelling pressure 18～22kN, stable rolling exit velocity 0.9～1m/min, pusher dolly uniform motion;
(3) roll out be of a size of (46～48) x(2.4～2.8) copper pipe of mm.
4, vertical pulling scale
(1) guarantees the wall thickness (WT max-WT min) of rolling rear copper pipe≤0.25mm;
(2) the rolling copper pipe is carried out a time and stretch, the stretch process rate is 1.2～1.8; Guarantee that rolling copper pipe does not swing in the time of the vertical pulling progressive die, the tube reducing that requires according to vertical pulling subtracts the wall thickness requirement, and stretching die is of a size of 39.65 ± 0.02mm, 25～30 ° of angles, floating core head size: microcephaly: 35.95 ± 0.02 mm, major part: 40.7 ± 0.02mm, 26～30 ° of angles.
5, clean
Copper pipe behind the vertical pulling is put into cleaning case, add cleaning agent and clean.
6, check warehouse-in
Copper pipe after cleaning is checked, and qualified products are put into the product storehouse.
Embodiment 2
1, horizontal casting
(1) the selection standard tough cathode guarantees its dry tack free and surface without the copper beans, without surperficial hangers as batching before reinforced, and all furnace charges and coverture all will carry out drying operation;
(2) above-mentioned batching being put into melting furnace melts, fill it up with rear interpolation charcoal and close fire door until batching, the charcoal cladding thickness is 100～150mm, the smelting temperature of melting furnace is 1130～1200 ℃, prevent from entering copper liquid at adition process oxygen, calcine 5～7 hours (containing intensification/cooling) at 450～500 ℃ before charcoal uses; Measure copper water weight and constituent content, add phosphor copper and carry out deoxidation, guarantee P≤6ppm, add again 0.12～0.25% the further deoxygenation of calcium boride according to oxygen content situation in the copper liquid;
(3) the copper water in the melting furnace being changed in the holding furnace over to insulation and copper water will tightly protect, and the crystalline flake graphite that adds thickness 100～150mm covers the copper water surface;
(4) adding content of rare earth in holding furnace is that 0.010% rare earth alloy copper carries out deoxygenation and crystal grain thinning;
(5) with horizontal casting out the wall thickness of copper pipe be controlled at 90 ± 1mm, reduce again casting speed to 240～280mm/min and continue casting 30 minutes, return at last normal speed, production process is not changed chute and is avoided sneaking into oxygen, adopts crystallizer to cool off.
2, mill face
With ingot casting surface scale mill off, and ingot casting aligned the depth of cut 0.4～1.2mm.
3, three-roller planetary is rolling
(1) use 3 roller heads to substitute survey tool, to three-roller planetary rolling mill bearing and roller head position adjustments and correction, it is 0.025mm that survey tool requires the tolerance of circular runout, and the tolerance of cylindricity is 0.005mm;
(2) control mill data: main speed 400 ± 10r/min, auxiliary fast 600～800r/min, rate of bending 14～18r/min, rolling speed 8～15 r/min, stable rolling enter pipe speed 0.8～1.5 r/min, propelling pressure 18～22kN, stable rolling exit velocity 0.9～1m/min, pusher dolly uniform motion.
(3) roll out be of a size of (46～48) x(2.4～2.8) copper pipe of mm.
4, vertical pulling scale
(1) guarantees the wall thickness (WT max-WT min) of rolling rear copper pipe≤0.25mm;
(2) the rolling copper pipe is carried out a time and stretch, the stretch process rate is 1.2～1.8; Guarantee that rolling copper pipe does not swing in the time of the vertical pulling progressive die, the tube reducing that requires according to vertical pulling subtracts the wall thickness requirement, and stretching die is of a size of 39.65 ± 0.02mm, 25～30 ° of angles, floating core head size: microcephaly: 35.95 ± 0.02 mm, major part: 40.7 ± 0.02mm, 26～30 ° of angles.
5, clean
Copper pipe behind the vertical pulling is put into cleaning case, add cleaning agent and clean.
6, check warehouse-in
Copper pipe after cleaning is checked, and qualified products are put into the product storehouse.
Before using processing step of the present invention, need be with survey tool to three-roller planetary rolling mill bearing and roller head position correction, bearing calibration comprises the steps:
(1) at first measures three survey tool gaps with thickness gauge, make three survey tool gaps consistent by adjusting;
(2) after being contained in survey tool on the milling train, respectively it is gone to horizontal direction, utilize level meter slowly to adjust and guarantee the survey tool level;
(3) manually control the rotation attachment driving shaft again and make the survey tool rotation, measure one by one survey tool and beat, it is beated at 0.05～0.08mm by adjusting each survey tool of assurance;
(4) after guaranteeing that survey tool is beated, dial gauge is fixed on the auxiliary mould, rotate main transmission main rotary shaft (or the subrack of walking around), rotor rack drives three survey tool revolution, and three survey tools maximum of the number of degrees from dial gauge is relative to each other in 0.08～0.1mm; If difference is larger, then adjust separately one or two survey tool, it is met the demands.
(5) load onto three roller heads, measure the gap between three roller heads, make three roller head gaps consistent with step 1 Measuring Time gap by thickness gauge.
(6) the rolling calibration coupon of selection 46～48mm rotates attachment driving shaft three rolls is contacted gently with the calibration coupon, and can twitch back and forth.
Claims (6)
1. the production technology of a copper pipe for magnetic control pipe is characterized in that comprising the steps:
(a) horizontal casting;
(b) mill face;
(c) three-roller planetary is rolling;
(d) vertical pulling scale;
(e) clean;
(f) check warehouse-in.
2. the production technology of copper pipe for magnetic control pipe according to claim 1 is characterized in that described horizontal casting comprises the steps:
(1) selects Cu-CATH-1 or standard cathode copper as batching, guarantee that before reinforced its dry tack free and surface are without the copper beans;
(2) adopt melting furnace to melt, after it fills it up with batching, add charcoal and close fire door, 450～500 ℃ of calcinings 5～7 hours, prevent from entering copper liquid at adition process oxygen before charcoal uses, the charcoal cladding thickness is 100～150mm, and the smelting temperature of melting furnace is 1130～1200 ℃; When the selection standard tough cathode was batching, the phosphor copper that adds P≤6ppm carried out deoxidation;
(3) the copper water in the melting furnace being changed in the holding furnace over to insulation and copper water will tightly protect, and the crystalline flake graphite that adds thickness 100～150mm covers the copper water surface;
(4) adding content of rare earth in holding furnace is that 0.010% rare earth alloy copper carries out deoxygenation and crystal grain thinning;
(5) with horizontal casting out the wall thickness of copper pipe be controlled at 90 ± 1mm, reduce again casting speed to 240～280mm/min and continue casting 30 minutes, return at last normal speed and adopt crystallizer to cool off.
3. the production technology of copper pipe for magnetic control pipe according to claim 1 is characterized in that the described face that mills is with ingot casting surface scale mill off, and ingot casting is aligned the depth of cut 0.4～1.2mm.
4. the production technology of copper pipe for magnetic control pipe according to claim 1 is characterized in that described three-roller planetary is rolling to comprise the steps:
(1) use 3 roller heads to substitute survey tool, to three-roller planetary rolling mill bearing and roller head position adjustments and correction, it is 0.025mm that survey tool requires the tolerance of circular runout, and the tolerance of cylindricity is 0.005mm;
(2) control mill data: main speed 400 ± 10r/min, auxiliary fast 600～800r/min, rate of bending 14～18r/min, rolling speed 8～15 r/min, stable rolling enter pipe speed 0.8～1.5 r/min, propelling pressure 18～22kN, stable rolling exit velocity 0.9～1m/min, pusher dolly uniform motion;
(3) roll out be of a size of (46～48) x(2.4～2.8) copper pipe of mm.
5. the production technology of copper pipe for magnetic control pipe according to claim 1 is characterized in that described vertical pulling scale comprises the steps:
(1) guarantees the wall thickness (WT max-WT min) of rolling rear copper pipe≤0.25mm;
(2) the rolling copper pipe is carried out a time and stretch, the stretch process rate is 1.2～1.8; Guarantee that rolling copper pipe does not swing in the time of the vertical pulling progressive die, the tube reducing that requires according to vertical pulling subtracts the wall thickness requirement, and stretching die is of a size of 39.65 ± 0.02mm, 25～30 ° of angles, floating core head size: microcephaly: 35.95 ± 0.02 mm, major part: 40.7 ± 0.02mm, 26～30 ° of angles.
6. the production technology of copper pipe for magnetic control pipe according to claim 4 is characterized in that with roller head three-roller planetary rolling mill bearing and roller head method for correcting position being comprised the steps: in described vertical pulling scale step 1
(1) at first measures three survey tool gaps with thickness gauge, make three survey tool gaps consistent by adjusting;
(2) after being contained in survey tool on the milling train, respectively it is gone to horizontal direction, utilize level meter slowly to adjust and guarantee the survey tool level;
(3) manually control the rotation attachment driving shaft again and make the survey tool rotation, measure one by one survey tool and beat, it is beated at 0.05～0.08mm by adjusting each survey tool of assurance;
(4) after guaranteeing that survey tool is beated, dial gauge is fixed on the auxiliary mould, rotate main transmission main rotary shaft or the subrack of walking around, rotor rack drives three survey tool revolution, and three survey tools maximum of the number of degrees from dial gauge is relative to each other in 0.08～0.1mm; If difference is larger, then adjust separately one or two survey tool, it is met the demands;
(5) load onto three roller heads, measure the gap between three roller heads, make three roller head gaps consistent with step 1 Measuring Time gap by thickness gauge;
(6) the rolling calibration coupon of selection 46～48mm rotates attachment driving shaft three rolls is contacted gently with the calibration coupon, and can twitch back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310011935.5A CN103042366B (en) | 2013-01-14 | 2013-01-14 | Manufacturing technique for copper pipes for magnetrons |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310011935.5A CN103042366B (en) | 2013-01-14 | 2013-01-14 | Manufacturing technique for copper pipes for magnetrons |
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| CN103042366B CN103042366B (en) | 2015-04-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707876A (en) * | 2014-12-16 | 2015-06-17 | 特能传热科技（中山）有限公司 | Technology for making copper tube used for magnetron anode tube |
| CN105149407A (en) * | 2015-09-17 | 2015-12-16 | 特能传热科技（中山）有限公司 | Manufacturing technology for high-purity oxygen-free copper bar for producing magnetron |
| CN117340333A (en) * | 2023-12-04 | 2024-01-05 | 常州润来科技有限公司 | Self-checking copper pipe surface milling device and detection method |
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| US4242894A (en) * | 1978-03-31 | 1981-01-06 | Wean United, Inc. | Method and apparatus for producing thin tubes in a skew-rolling mill |
| RU2046688C1 (en) * | 1993-04-02 | 1995-10-27 | Акционерное общество "Электростальский завод тяжелого машиностроения" | Stand of the planetary mill of helical rolling |
| JP2002263757A (en) * | 2001-03-06 | 2002-09-17 | Yokohama Kiko Techno Kk | Rotary swaging machine |
| CN1979496A (en) * | 2005-12-02 | 2007-06-13 | 中国科学院金属研究所 | Copper-alloy pipe-material casting-milling technology parameter designing and optimizing method |
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2013
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| US4242894A (en) * | 1978-03-31 | 1981-01-06 | Wean United, Inc. | Method and apparatus for producing thin tubes in a skew-rolling mill |
| RU2046688C1 (en) * | 1993-04-02 | 1995-10-27 | Акционерное общество "Электростальский завод тяжелого машиностроения" | Stand of the planetary mill of helical rolling |
| JP2002263757A (en) * | 2001-03-06 | 2002-09-17 | Yokohama Kiko Techno Kk | Rotary swaging machine |
| CN1979496A (en) * | 2005-12-02 | 2007-06-13 | 中国科学院金属研究所 | Copper-alloy pipe-material casting-milling technology parameter designing and optimizing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707876A (en) * | 2014-12-16 | 2015-06-17 | 特能传热科技（中山）有限公司 | Technology for making copper tube used for magnetron anode tube |
| CN105149407A (en) * | 2015-09-17 | 2015-12-16 | 特能传热科技（中山）有限公司 | Manufacturing technology for high-purity oxygen-free copper bar for producing magnetron |
| CN117340333A (en) * | 2023-12-04 | 2024-01-05 | 常州润来科技有限公司 | Self-checking copper pipe surface milling device and detection method |
| CN117340333B (en) * | 2023-12-04 | 2024-02-13 | 常州润来科技有限公司 | Self-checking copper pipe surface milling device and detection method |
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Denomination of invention: Production process of copper tube for magnetron tube Effective date of registration: 20221024 Granted publication date: 20150408 Pledgee: Agricultural Bank of China Limited Changsha Wangcheng District sub branch Pledgor: HUNAN C-KINGDOM INTERNATIONAL COPPER Co.,Ltd. Registration number: Y2022430000093 |