CN108405820B - A kind of horizontal casting Rolling Production brass tube technique - Google Patents
A kind of horizontal casting Rolling Production brass tube technique Download PDFInfo
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- CN108405820B CN108405820B CN201810243128.9A CN201810243128A CN108405820B CN 108405820 B CN108405820 B CN 108405820B CN 201810243128 A CN201810243128 A CN 201810243128A CN 108405820 B CN108405820 B CN 108405820B
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- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 70
- 239000010951 brass Substances 0.000 title claims abstract description 70
- 238000005266 casting Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000005096 rolling process Methods 0.000 title claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 56
- 239000000956 alloy Substances 0.000 claims abstract description 56
- 238000002844 melting Methods 0.000 claims abstract description 45
- 230000008018 melting Effects 0.000 claims abstract description 45
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 40
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000004321 preservation Methods 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 23
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000009785 tube rolling Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 claims description 30
- 238000002425 crystallisation Methods 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 28
- 238000010792 warming Methods 0.000 claims description 28
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 27
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 27
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 27
- 229910001096 P alloy Inorganic materials 0.000 claims description 24
- 238000005554 pickling Methods 0.000 claims description 21
- 238000005520 cutting process Methods 0.000 claims description 20
- 229910052725 zinc Inorganic materials 0.000 claims description 20
- 239000011701 zinc Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 19
- 230000005494 condensation Effects 0.000 claims description 19
- 230000008025 crystallization Effects 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 11
- 230000035807 sensation Effects 0.000 claims description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000003610 charcoal Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 239000004615 ingredient Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 229910052727 yttrium Inorganic materials 0.000 claims description 10
- 239000001307 helium Substances 0.000 claims description 9
- 229910052734 helium Inorganic materials 0.000 claims description 9
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 239000013078 crystal Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
Abstract
The invention discloses a kind of techniques of horizontal casting Rolling Production brass tube；Its master operation includes melting, heat preservation cooling, horizontal casting, cuts, removes removing oxide layer, tube rolling annealing；Wherein by the control to material content, and it is added to rare earth alloy in melting, improves the refinement of crystal grain, promote processing performance, conducive to the production of rolling, promotes lumber recovery；Technological parameter is optimized simultaneously and really, using the brass tube of present invention process parameter production preparation, outer diameter and wall thickness deviation are small, and precision is high, and mechanical performance is strong；And present invention process is applicable in the horizontal casting Rolling Production of all specification brass tubes, it is easy to spread.
Description
Technical field
The present invention relates to alloy manufacturing fields, and in particular to the method for horizontal casting Rolling Production brass tube.
Background technique
Existing brass tube production technology is ingot casting, extruding, stretching or ingot casting, extruding, tube rolling, stretching, Product Process route
It is long, and BRASS FORGE squeezes by heating and forms brass pipe blanks, syringe needle bending deformation when pipe is due to perforation is also easy to produce bias, squeezes
Pressure passage will also lose 20% lumber recovery, and then cause brass tube lumber recovery relatively low, in addition, the pipe formed is needed by anti-
It stretches 12 times again, this leads to the reduction of brass tube uniformity, and yield rate further declines, to improve being produced into for brass tube
This.
There is remarkable advantage compared with traditional handicraft using the horizontal continuous casting process, be mainly manifested in: (1) eliminating the de- of molding
Mould, mould preparation, ingot casting soaking and cogging process shorten process and reduce labour, reduce capital construction investment, improving production efficiency；(2)
The waste for reducing raw material, improves recovery rate of iron；(3) soaking pit reheating operation is eliminated, reduces energy consumption, further
Shorten the process-cycle；(4) metal is rapidly cooled, compact crystallization, even tissue, and slab quality is good；(5) tundish and crystallizer
It is linked to be an entirety, avoids secondary oxidation, slab purity is high.
The process that a kind of horizontal casting prepares bathroom brass tube is disclosed in Chinese granted patent CN103695703,
It finds that the technique has limitation by multiple practical proof, may not apply to extensive brass tube production, main cause is
The technique directly rolls slab pipe without annealing, but its processing performance of different brass tubes is different, for processability
The low brass tube of energy, yield rate is lower instead for Direct Rolling, this reason directly limits horizontal casting production brass tube technique
Popularization.
Summary of the invention
Present invention aim to address deficiency existing for above-mentioned technology, a kind of horizontal casting Rolling Production brass tube is provided
Technique, this method has determined scientific and reasonable processing step and technological parameter, so that the technique is applicable in required brass tube
Preparation.
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
Melting: being warming up to 120-150 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 760-810 DEG C with 5 DEG C/min rate, protects
After warm 10min, casting furnace melting 30-45min is added in cathode copper；It is warming up to 880-920 DEG C with 5 DEG C/min rate again, heat preservation
After 5min, copper-phosphorus alloy is added and carries out deoxidation removal of impurities, melting 30-50min；950-990 DEG C is risen to 5 DEG C/min rate again, is protected
Rare earth alloy, melting 35-45min are added after warm 5min；1250-1300 DEG C is risen to 5 DEG C/min rate again, after keeping the temperature 5min,
Zinc is added, melting 25-40min obtains melt, and in the oxygen barrier heat preservation of charcoal layer of alloy molten solution surface covering 130-170mm thickness；Its
In, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, and the mass fraction of phosphorus accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc
Mass ratio be 63-72:0.03-0.05:0.003-0.005:25-36；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 10-15mm/s, and condensation hydraulic pressure control is in 0.2-0.5MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed 200- are obtained
225mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1650-1800mm/min, speed of mainshaft 450-520r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 850-880 DEG C with the rate of 3 DEG C/min, keep the temperature 3-
After 5h, vacuum degree is kept, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, repeats annealing and pickling 3-4
After secondary, finished product is obtained.
Wherein, the rare earth alloy is Mg-Gd-Y-Zn alloy, and preparation process is that 55:3.5:1.8:1.3 in mass ratio claims
Magnesium, gadolinium, yttrium, zinc powder are taken, and powder is preheated to 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C,
Under conditions of helium protection, 700 DEG C are risen to the rate of 10 DEG C/min, after magnesium powder is completely dissolved, after keeping the temperature 10min, is added
Enter zinc powder, rises to 800 DEG C with the rate of 5 DEG C/min, after keeping the temperature 5min, gadolinium powder, yttrium is added after zinc powder is completely dissolved in stirring
Powder keeps temperature-resistant, stirring, after gadolinium powder and yttrium powder are completely dissolved, after keeping the temperature 25min, remove the gred, after static 30min, will melt
Liquid imports crystallizer, controls melt flow velocity 25mm/s, condensation hydraulic pressure control is in 0.5MPa in crystallizer, and crystallisation by cooling to obtain the final product.
The present invention has the advantages that present invention process can be suitably used for all types of brass tube horizontal casting rollings, technique
In controlled to endangering impurity element (Bi, Pb, Sb, Si, Sn etc.) content, and be added to rare earth alloy in melting, have
Conducive to the refinement of crystal grain, processing performance is promoted, conducive to the production of rolling, promotes lumber recovery；The present invention carries out technological parameter
Optimization, using the brass tube of present invention process parameter production preparation, outer diameter and wall thickness deviation are small, and precision is high, and mechanical performance is strong；
Removing oxide layer is gone using Centreless lathe, high-efficient, copper pipe outer round surface is high-quality, high yield rate；Pipe is not necessarily in preparation process
Annealing and pickling can roll, and simplify production procedure, reduce discharge of wastewater, improve production efficiency；It is cold using annular distance type
Pipe mill rolling, product specification multiplicity, dimensional accuracy are higher.
Specific embodiment:
Embodiment 1
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: being warming up to 150 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 810 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 30min is added in cathode copper；920 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 50min；990 DEG C are risen to 5 DEG C/min rate again, rare earth alloy is added after keeping the temperature 5min, is melted
Refine 35min；1300 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 40min obtains melt, and in alloy
The oxygen barrier heat preservation of charcoal layer of molten surface covering 170mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the quality of phosphorus
Score accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 72:0.03:0.005:36；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 15mm/s, and condensation hydraulic pressure control is in 0.5MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
200mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1650mm/min, speed of mainshaft 520r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 880 DEG C with the rate of 3 DEG C/min, after keeping the temperature 5h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 2
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: being warming up to 120 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 760 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 45min is added in cathode copper；880 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 30min；950 DEG C are risen to 5 DEG C/min rate again, rare earth alloy is added after keeping the temperature 5min, is melted
Refine 45min；1250 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 25-40min obtains melt, and is closing
The oxygen barrier heat preservation of charcoal layer of golden molten surface covering 130mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the matter of phosphorus
Amount score accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 63:0.05:0.003:25；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 10mm/s, and condensation hydraulic pressure control is in 0.2MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
225mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1800mm/min, speed of mainshaft 450r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 850 DEG C with the rate of 3 DEG C/min, after keeping the temperature 3h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 3
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: being warming up to 140 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 790 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 35min is added in cathode copper；900 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 40min；975 DEG C are risen to 5 DEG C/min rate again, rare earth alloy is added after keeping the temperature 5min, is melted
Refine 40min；1285 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 30min obtains melt, and in alloy
The oxygen barrier heat preservation of charcoal layer of molten surface covering 150mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the quality of phosphorus
Score accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 68:0.04:0.004:30；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 15mm/s, and condensation hydraulic pressure control is in 0.4MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
210mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1700mm/min, speed of mainshaft 500r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 865 DEG C with the rate of 3 DEG C/min, after keeping the temperature 3h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 4
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
Melting: being warming up to 135 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 800 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 35min is added in cathode copper；900 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 35min；960 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 45min；Again with 5 DEG C/min speed
Rate rises to 1280 DEG C, and after keeping the temperature 5min, zinc is added, and melting 25min obtains melt, and thick in alloy molten solution surface covering 140mm
The oxygen barrier heat preservation of charcoal layer；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, and the mass fraction of phosphorus accounts for 14%；Cathode copper, copper phosphorus
Alloy, rare earth alloy, zinc mass ratio be 66:0.03:0.004:32；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 15mm/s, and condensation hydraulic pressure control is in 0.3MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
215mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1750mm/min, speed of mainshaft 515r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 865 DEG C with the rate of 3 DEG C/min, after keeping the temperature 4h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 5
A kind of horizontal casting Rolling Production brass tube technique, specific steps are as follows:
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: being warming up to 140 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 800 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 35min is added in cathode copper；910 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 40min；980 DEG C are risen to 5 DEG C/min rate again, rare earth alloy is added after keeping the temperature 5min, is melted
Refine 40min；1270 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 30min obtains melt, and in alloy
The oxygen barrier heat preservation of charcoal layer of molten surface covering 150mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the quality of phosphorus
Score accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 63:0.03:0.006:25；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 15mm/s, and condensation hydraulic pressure control is in 0.4MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
220mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1700mm/min, speed of mainshaft 510r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 870 DEG C with the rate of 3 DEG C/min, after keeping the temperature 4h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 6
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: casting furnace is warming up to 1300 DEG C, after keeping the temperature 1h, successively by cathode copper, copper-phosphorus alloy, rare earth alloy, zinc
Smelting furnace is added, melting 40min obtains melt, and in the oxygen barrier heat preservation of charcoal layer of alloy molten solution surface covering 160mm thickness；Wherein,
The mass fraction of copper accounts for 86% in copper-phosphorus alloy, and the mass fraction of phosphorus accounts for 14%；The matter of cathode copper, copper-phosphorus alloy, rare earth alloy, zinc
Amount is than being 70:0.04:0.004:31；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 12mm/s, and condensation hydraulic pressure control is in 0.3MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed are obtained
215mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1700mm/min, speed of mainshaft 490r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 870 DEG C with the rate of 3 DEG C/min, after keeping the temperature 3-5h,
Vacuum degree being kept, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times,
Obtain finished product.
Embodiment 7
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated
To 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with 10 DEG C/min's
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min,
After keeping the temperature 5min, gadolinium powder, yttrium powder is added after zinc powder is completely dissolved in stirring, keeps temperature-resistant, stirring, to gadolinium powder and yttrium powder
It after being completely dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s,
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in crystallizer；
Melting: being warming up to 140 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 800 DEG C with 5 DEG C/min rate, keeps the temperature 10min
Afterwards, casting furnace melting 35min is added in cathode copper；910 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper phosphorus is added
Alloy carries out deoxidation removal of impurities, melting 35min；970 DEG C are risen to 5 DEG C/min rate again, rare earth alloy is added after keeping the temperature 5min, is melted
Refine 35min；1300 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 40min obtains melt, and in alloy
The oxygen barrier heat preservation of charcoal layer of molten surface covering 130mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the quality of phosphorus
Score accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 68:0.03:0.005:29；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, cooling into crystallizer after sampling analysis ingredient is qualified
Crystallization controls melt flow velocity 13mm/s, and condensation hydraulic pressure control is in 0.2MPa in crystallizer；
Continuous up-casting: after melt crystallization, continuously casting is pulled up by dragger, obtains brass pipe blanks, lead speed
130mm/min, above draw pitch be 1mm, above draw stop draw frequency be 130 beats/min, above draw temperature be 1150 DEG C；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-
1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1750mm/min, speed of mainshaft 470r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base
Pipe, then by base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 865 DEG C with the rate of 3 DEG C/min, after keeping the temperature 5h, protect
Vacuum degree is held, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains
Finished product.
Embodiment 8
The lumber recovery for recording embodiment 1-7, measures the finished product outer diameter and wall thickness deviation of its preparation, and is processed into standard
Sample measures its tensile strength and elongation percentage, and data are as follows:
| Project | Lumber recovery | Outside diameter tolerance (mm) | Wall thickness deviation (mm) | Tensile strength (MPa) | Elongation percentage (%) |
| Embodiment 1 | 97.2% | 0.04 | 0.06 | 176.5 | 33.5 |
| Embodiment 2 | 96.5% | 0.05 | 0.06 | 172.3 | 31.2 |
| Embodiment 3 | 98.3% | 0.04 | 0.05 | 181.9 | 35.6 |
| Embodiment 4 | 84.4% | 0.06 | 0.07 | 122.6 | 22.7 |
| Embodiment 5 | 85.7% | 0.06 | 0.06 | 163.8 | 29.8 |
| Embodiment 6 | 77.1% | 0.07 | 0.09 | 154.3 | 19.4 |
| Embodiment 7 | 75.3% | 0.08 | 0.1 | 162.7 | 13.6 |
Above-mentioned data are analyzed it is found that embodiment 1-3 uses technique of the present invention and parameter, it is seen that its lumber recovery,
Precision, mechanical property are superior to other embodiments, and embodiment 3 is preferred plan；Embodiment 4 is not added with rare earth alloy,
Lumber recovery and mechanical property are declined；The rare earth alloy amount that embodiment 5 is added is big, good mechanical properties, but under lumber recovery
Drop is obvious；For embodiment 6 by the way of directly heating up, lumber recovery and mechanical properties decrease are obvious；Embodiment 7 is connected using top-guiding type
Casting, indices decline obviously；It can thus be concluded that going out, present invention process is added to rare earth alloy in melting, is conducive to crystalline substance
The refinement of grain promotes processing performance, conducive to the production of rolling, promotes lumber recovery, and technological parameter is optimized in the present invention,
Using the brass tube of present invention process parameter production preparation, outer diameter and wall thickness deviation are small, and precision is high, and mechanical performance is strong.
Claims (2)
1. a kind of horizontal casting Rolling Production brass tube technique, it is characterised in that:
Specific steps are as follows:
Melting: being warming up to 120-150 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 760-810 DEG C with 5 DEG C/min rate, heat preservation
After 10min, casting furnace melting 30-45min is added in cathode copper；It is warming up to 880-920 DEG C with 5 DEG C/min rate again, heat preservation
After 5min, copper-phosphorus alloy is added and carries out deoxidation removal of impurities, melting 30-50min；950-990 DEG C is risen to 5 DEG C/min rate again, is protected
Rare earth alloy, melting 35-45min are added after warm 5min；1250-1300 DEG C is risen to 5 DEG C/min rate again, after keeping the temperature 5min,
Zinc is added, melting 25-40min obtains melt, and in the oxygen barrier heat preservation of charcoal layer of alloy molten solution surface covering 130-170mm thickness；Its
In, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, and the mass fraction of phosphorus accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc
Mass ratio be 63-72:0.03-0.05:0.003-0.005:25-36；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, and after sampling analysis ingredient is qualified, ties into crystallizer is cooling
Crystalline substance controls melt flow velocity 10-15mm/s, and condensation hydraulic pressure control is in 0.2-0.5MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed 200- are obtained
225mm/min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is removed into removing oxide layer, lathe input and output material speed 1650- through Centreless lathe vehicle face
1800mm/min, speed of mainshaft 450-520r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base pipe, then
By base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 850-880 DEG C with the rate of 3 DEG C/min, after keeping the temperature 3-5h,
Vacuum degree being kept, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times,
Obtain finished product；
Wherein, the rare earth alloy be Mg-Gd-Y-Zn alloy, preparation process be 55:3.5:1.8:1.3 in mass ratio weigh magnesium,
Gadolinium, yttrium, zinc powder, and powder is preheated to 180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, in helium
Under conditions of protection, 700 DEG C are risen to the rate of 10 DEG C/min, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added,
800 DEG C are risen to the rate of 5 DEG C/min, stirring after keeping the temperature 5min, is added gadolinium powder, yttrium powder, keeps after zinc powder is completely dissolved
Temperature-resistant, stirring after keeping the temperature 25min, removes the gred after gadolinium powder and yttrium powder are completely dissolved, after static 30min, melt is imported
Crystallizer controls melt flow velocity 25mm/s, and condensation hydraulic pressure control is in 0.5MPa in crystallizer, and crystallisation by cooling to obtain the final product.
2. a kind of horizontal casting Rolling Production brass tube technique according to claim 1, it is characterised in that: specific steps
Are as follows:
The preparation of rare earth alloy: 55:3.5:1.8:1.3 in mass ratio weighs magnesium, gadolinium, yttrium, zinc powder, and powder is preheated to
180 DEG C, then magnesium powder is placed in the smelting furnace for being pre-heated to 100 DEG C, under conditions of helium protection, with the speed of 10 DEG C/min
Rate rises to 700 DEG C, after magnesium powder is completely dissolved, after keeping the temperature 10min, zinc powder is added, rises to 800 DEG C with the rate of 5 DEG C/min, stirs
It mixes, after zinc powder is completely dissolved, after keeping the temperature 5min, gadolinium powder, yttrium powder is added, keeps temperature-resistant, stirring is complete to gadolinium powder and yttrium powder
It after fully dissolved, after keeping the temperature 25min, removes the gred, after static 30min, melt is imported into crystallizer, controls melt flow velocity 25mm/s, knot
For condensation hydraulic pressure control in 0.5MPa, crystallisation by cooling is spare up to rare earth alloy in brilliant device；
Melting: being warming up to 140 DEG C for casting furnace, keeps the temperature 1h, then be warming up to 790 DEG C with 5 DEG C/min rate, will after keeping the temperature 10min
Casting furnace melting 35min is added in cathode copper；900 DEG C are warming up to 5 DEG C/min rate again, after keeping the temperature 5min, copper-phosphorus alloy is added
Carry out deoxidation removal of impurities, melting 40min；975 DEG C are risen to 5 DEG C/min rate again, rare earth alloy, melting is added after keeping the temperature 5min
40min；1285 DEG C are risen to 5 DEG C/min rate again, after keeping the temperature 5min, zinc is added, melting 30min obtains melt, and molten in alloy
The oxygen barrier heat preservation of charcoal layer of liquid surface covering 150mm thickness；Wherein, the mass fraction of copper accounts for 86% in copper-phosphorus alloy, the quality point of phosphorus
Number accounts for 14%；Cathode copper, copper-phosphorus alloy, rare earth alloy, zinc mass ratio be 68:0.04:0.004:30；
Heat preservation cooling: melt imports holding furnace by chute and keeps the temperature, and after sampling analysis ingredient is qualified, ties into crystallizer is cooling
Crystalline substance controls melt flow velocity 15mm/s, and condensation hydraulic pressure control is in 0.4MPa in crystallizer；
Horizontal casting: after melt crystallization, by dragger horizontally tracting continuously casting, brass pipe blanks, casting speed 210mm/ are obtained
min；
Cutting: brass pipe blanks by with dragger associated with integral type sawing machine cut, length accuracy control in 0-1cm；
It removes removing oxide layer: the brass pipe blanks after cutting is gone into removing oxide layer, lathe input and output material speed through Centreless lathe vehicle face
1700mm/min, speed of mainshaft 500r/min；
Tube rolling annealing: by the brass pipe blanks for removing removing oxide layer using annular distance type cold pilger mill roll needed for specification base pipe, then
By base pipe under conditions of vacuum degree is -0.1MPa, after being heated to 865 DEG C with the rate of 3 DEG C/min, after keeping the temperature 3h, keep true
Reciprocal of duty cycle, and after being cooled to 30 DEG C or less with the rate of 10 DEG C/min, pickling is dry, after repeating annealing and pickling 3-4 times, obtains into
Product.
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Denomination of invention: A horizontal continuous casting and rolling process for producing brass tubes Granted publication date: 20191126 Pledgee: Jiangxi Yiyang Rural Commercial Bank Co.,Ltd. Pledgor: Jiangxi Audy Brasswork Inc. Registration number: Y2024980011992 |