CN107385275A - A kind of rotor of steam turbo generator copper alloy and its processing technology - Google Patents
A kind of rotor of steam turbo generator copper alloy and its processing technology Download PDFInfo
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- CN107385275A CN107385275A CN201710694169.5A CN201710694169A CN107385275A CN 107385275 A CN107385275 A CN 107385275A CN 201710694169 A CN201710694169 A CN 201710694169A CN 107385275 A CN107385275 A CN 107385275A
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- 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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- 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
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- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
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- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/117—Refining the metal by treating with gases
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- 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
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Crystallography & Structural Chemistry (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses a kind of rotor of steam turbo generator copper alloy and its processing technology, copper alloy is made up of copper, nickel, silicon, chromium, silver, magnesium, niobium etc., is prepared using processing technologys such as the cold deformation → subzero treatment → timeliness of melting → continuously extruded → cold deformation → solution hardening → second；Technical scheme provided by the invention, the excellent material performance of acquisition, fully meet the requirement of rotor of steam turbo generator.
Description
Technical field
The present invention relates to a kind of non-ferrous alloy material and its processing technology, more particularly to a kind of rotor of steam turbo generator
With copper alloy and its processing technology.
Background technology
Slot wedge is the part of stationary power generation trough inner stator bar, in order to improve generator off-center operation ability and guarantee
Safe and reliable when generator loading electric current causes the temperature to raise, high-rating generator requires that its slot wedge material must have higher lead
Electrically, while there is higher normal temperature and mechanical behavior under high temperature.At present, domestic large turbine-generator set manufacturing firm selects
Rotor of steam turbo generator slot wedge material, majority use Be-Co-Cu alloy material, and its chemical composition is：Beryllium 0.045%-0.75%, cobalt
2.5%-2.7%, zirconium 0.2-0.3%, at room temperature its tensile strength be more than 690MPa, yield strength is more than 590 MPa, elongation
More than 15%, conductance is more than 38.1%IACS；When temperature is 427 DEG C, its tensile strength is more than 520MPa, and yield strength is more than
450 MPa, elongation are more than 5%.But beryllium is harmful element, especially at high temperature, to human body and environment all pole
It is harmful, for the consideration to environmental protection and health etc., it is necessary to change Be-Co-Cu alloy material, development environment friend
Good rotor of steam turbo generator slot wedge material.
Patent 200510123011 discloses a kind of large-capacity steam turbine generator rotor copper alloy slot wedge and preparation method thereof,
Its alloying component is：Ni:1 .35~2 .05%, Si:0 .40~0 .80%, Cr:0 .05~0 .25%, Be: 0
.15~0 .40%, Cu:Surplus；Production technology mainly uses 920~980 DEG C of solution treatment, 35~50% cold deformations, 450~
500 DEG C of insulation 4~5h Ageing Treatments, air cooling.In the technical scheme, beryllium is harmful to environment, while price is high, and influences alloy
High-temperature stability, alloy is set to bear hot operation for a long time；Ni, Si quality proportioning are left in 2 .5~3 .5 in alloy
The right side, Si contents are relatively higher, and only some Si forms Ni2Si precipitated phases, to be dissolved state presence, conductance is only remaining Si
49%IACS.The .4 of patent 200510038051 discloses a kind of titan bronze for slot wedge on turbo generator rotor and its processing technology,
Its composition is： Be：0 .1~0 .3%, Ni：1 .5~2 .5%, Ti：0 .4~0 .6%, Cu：Surplus, conductance are only 47%
IACS, while high-temperature behavior is undesirable, working life is short, can not meet the needs of high-power generator long time running.Patent
201410249942.3 disclose a kind of preparation technology of Ultra-fine Grained high-performance CuCrNiSi alloy slot wedges.It is by using continuous
Extrusion process, crystal grain thinning is realized, afterwards again by chilly deformation and Ageing Treatment, realize the system of CuCrNiSi alloy slot wedges
It is standby.The technique improves the mechanical property of slot wedge, but its conductance is inclined by crystal grain refinement, working hardening and precipitation strength
Low, conductance only has 30~40%IACS.It is excellent that patent 201410620532.5 discloses a kind of easily extrusion forming high-temperature behavior
Copper alloy rotor slot wedge and its production method, include Ni, Cr, Si, Zr and Cu in its material, Ni content for 1.6wt%~
2.5wt%, Cr content are 0.05wt%~0.15wt%, and Si content is 0.5wt%~0.8wt%, and Zr content is
0.15wt%~0.25wt%.Its alloy material easily produces intercrystalline crack when big working modulus deforms, and have impact on the power of material
Performance is learned, potential safety hazard be present during use.Patent 200910248653.0 discloses a kind of high-strength nickel-chromium-silicon-copper alloy material
And its processing technology, the quality proportioning of the composition of alloy are：Ni：2.1%~2.9%, Cr：0.4%~0.7%, Si：0.3%
~0.7%；The processing technology used for：At founding, pressure processing, high temperature solid solution quenching heat treatment, cold pressure processing, timeliness are hot
Reason, machining.Although the alloy room-temperature property is preferable, its high-temperature behavior is less than the performance of Be-Co-Cu alloy material.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of rotor of steam turbo generator copper alloy and its processing technology.
The present invention is achieved by the following technical solutions：
A kind of rotor of steam turbo generator copper alloy, it is by weight percentage, composed of the following components：Copper, nickel, silicon, chromium, silver,
Magnesium, niobium；
The nickel content 1.8%~2.5%, silicone content 0.40%~0.60%, chromium content 0.60%~0.80%, silver content 0.10%~
0.20%th, content of magnesium 0.10%~0.20%, content of niobium 0.05~0.10%；
The total content of the elements such as the copper, nickel, silicon, chromium, silver, magnesium, niobium is more than 99.97%, the nickel content, the ratio of silicone content
It is 4.3：1；Silver content, content of magnesium, the ratio of content of niobium are 2：2：1.
A kind of processing technology of described rotor of steam turbo generator copper alloy comprises the following steps：
Melting → continuously extruded → cold deformation → solution hardening → second of cold deformation → subzero treatment → timeliness；
Described melting uses horizontal casting or continuous up-casting, and smelting temperature is 1200 DEG C~1250 DEG C；Melting raw material select
With conjunction among Cu-CATH-1, cupro-nickel intermediate alloy, copper silicon intermediate alloy, copper chromium intermediate alloy, copper zirconium intermediate alloy, copper niobium
Gold, fine silver, pure magnesium.
It is described using horizontal casting melting when, carry out covering copper liquid surface using cullet and borax, prevent copper liquid from inhaling
Gas；Wherein the ratio of cullet and borax is 3：1；A diameter of 30mm of horizontal casting copper bar, casting speed 500mm/min.
It is described using continuous up-casting melting when, using three disjunctor smelting equipments, described smelting equipment include melting furnace,
Holding furnace, compartment；It is connected between described melting furnace, compartment and holding furnace by flowing ditch, described stream ditch is higher by furnace bottom
200mm, the uniformity of copper liquid flowing can be promoted, the effect of slagging-off can be played；Online degasification dress is installed in described compartment
Put, be filled with 99.996% argon gas into copper liquid by online depassing unit, and by controlled rotation graphite shaft and rotor, will
In the argon gas press-in copper liquid of metering and micro-bubble is dispersed as, it is uniformly dispersed in copper liquid, so as to reach degasification, deoxidation
Purpose；Described argon gas export pressure 0.5MPa, flow 0.8Nm3/ h, rotor speed control is in 120r/min.Crystallizer goes out
Coolant-temperature gage is controlled at 20 DEG C~30 DEG C, and continuous up-casting speed is 550mm/min.
Described continuously extruded rotating speed is 3.5 revs/min, and the power of continuous extrusion apparatus is 600KW, continuously extruded
Ratio is 15~25, extrusion ratio 1.5, and extrusion temperature is 750 DEG C~850 DEG C, is used after continuously extruded and contains 20% alcohol
Solution is rapidly cooled to be less than 35 DEG C, and its crystallite dimension of the Cu alloy material of continuously extruded preparation is 0.003 ~ 0.007mm.
Described cold deformation carries out cold deformation using 60%~95% working modulus.
Described solution hardening be 960 DEG C be incubated 30 minutes, water quenching.
Second described of cold deformation carries out cold deformation using 35%~45% working modulus.
Described subzero treatment uses deep-cool treatment equipment, and temperature reduces by 50 DEG C per hour, until -180 DEG C, insulation
10 hours, then heat up 50 DEG C per hour, until room temperature.
Described aging temp is 450 DEG C~470 DEG C, and the time is 3 hours.
A kind of rotor of steam turbo generator copper alloy prepared by described processing technology, at room temperature its tensile strength be
The MPa of 690MPa~725, yield strength are the MPa of 590 MPa~610, and elongation is 16%~20%, conductance be 50%IACS~
55%IACS, softening temperature are more than 570 DEG C；When temperature is 427 DEG C, its tensile strength is the MPa of 550MPa~590, surrender
The MPa of the MPa of intensity 460~490, elongation 6%~10%.
The present invention mentality of designing and have the beneficial effect that：
1. the element and constituent content of optimum choice alloy material, alloy material of the invention contain copper, nickel, silicon, chromium, silver, magnesium,
Niobium；The nickel content 1.8%~2.5%, silicone content 0.40%~0.60%, chromium content 0.60%~0.80%, silver content 0.10%~
0.20%th, content of magnesium 0.10%~0.20%, content of niobium 0.05~0.10%；The elements such as the copper, nickel, silicon, chromium, silver, magnesium, niobium it is total
Content is more than 99.97%, and the nickel content, the ratio of silicone content are 4.3：1；Silver content, content of magnesium, the ratio of content of niobium are 2：
2：1.
Nickel and silicon can form compound N i2Si, Ni2Si is a kind of intermetallic compound, and hardness is very high, and size is small, significantly
Improve the hardness and intensity of alloy；The performance impact of the ratio alloy material of nickel and silicon is larger simultaneously, when 4.0 ＜ nickel contents/silicon
During content ＜ 4.5, the hardness and conductance of alloy material reach higher level, and during nickel content/silicone content ＜ 4.0, conductance is bright
Aobvious to reduce, hardness is also at relatively low level, and during nickel content/silicone content ＞ 4.5, the conductance of alloy material is basicly stable, but
It is that hardness is relatively low, for the present invention by substantial amounts of verification experimental verification, it is 4.3 to optimize nickel content and silicone content ratio：1, both ensure alloy
Material has excellent mechanical property, ensures that alloy material has excellent electric conductivity again.
Chromium can form the nanoscale Cr phases of Dispersed precipitate in alloy material, significantly improve the high temperatures of material
Can, chromium and silicon can form compound Cr3Si, Cr3The size of Si phase particles is several microns, can significantly improve alloy material
High-temperature stability, the Cr of disperse3Si phases particle is grown up to the crystallite dimension of alloy during being heated before quenching plays inhibitory action,
Significantly improve the mechanical property of alloy material；Chromium is little to the Conductivity of alloy material.
The addition of silver element is minimum to the Conductivity of alloy material, is produced when being added as alloying element significant solid
Molten strengthening effect, so as to improve the mechanical property of alloy material, meanwhile, the addition of silver element can significantly improve tying again for copper
Brilliant temperature, the softening temperature of copper is improved, the softening resistant performance that can be significantly improved.
The addition of magnesium elements can make density increase of the alloy material in ag(e)ing process precipitated phase, magnesium elements On Dislocation Motion
In the presence of effect is pulled, the performance of material can be improved.
The addition of niobium element can make it as crystallization nuclei crystal grain thinning, suppress growing up for precipitated phase, improve alloy material
The mechanical property of material, while significantly improve alloy material high-temperature behavior.
2. using continuous extruding technology, the material grains of preparation are tiny, significantly improve the performance of alloy material.
3. coming out technique using deep cooling, make the precipitate size of alloy tiny, develop into the dislocation in alloy material
Dislocation ring, the circumgranular dislocation ring of precipitated phase is set to hinder the migration of follow-up dislocation；Meanwhile subzero treatment makes to produce in alloy material
Raw twin, and obstruction is played a part of in motion of the twin to plastic history Dislocations, promotes the intensity of alloy material to improve.
Technical scheme provided by the invention, the alloy material excellent performance of acquisition, fully meets rotor of steam turbo generator
Requirement.
Embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
Embodiment 1
A kind of processing technology of rotor of steam turbo generator copper alloy comprises the following steps：
Melting → continuously extruded → cold deformation → solution hardening → second of cold deformation → subzero treatment → timeliness
Described melting uses horizontal casting or continuous up-casting, and smelting temperature is 1200 DEG C；The high-purity the moon of melting raw material selection
It is pole copper, cupro-nickel intermediate alloy, copper silicon intermediate alloy, copper chromium intermediate alloy, copper zirconium intermediate alloy, copper niobium intermediate alloy, fine silver, pure
Magnesium.
Described copper alloy includes the elements such as copper, nickel, silicon, chromium, silver, magnesium, niobium；The nickel content 1.8%~2.0%, silicon contain
Amount 0.40%~0.50%, chromium content 0.60%, silver content 0.10%, content of magnesium 0.10%, content of niobium 0.05%；
The total content of the elements such as the copper, nickel, silicon, chromium, silver, magnesium, niobium is more than 99.97%, the nickel content, the ratio of silicone content
It is 4.3：1；Silver content, content of magnesium, the ratio of content of niobium are 2：2：1.
It is described using horizontal casting melting when, carry out covering copper liquid surface using cullet and borax, prevent copper liquid from inhaling
Gas；Wherein the ratio of cullet and borax is 3：1；A diameter of 30mm of horizontal casting copper bar, casting speed 500mm/min.
It is described using continuous up-casting melting when, using three disjunctor smelting equipments, described smelting equipment include melting furnace,
Holding furnace, compartment；It is connected between described melting furnace, compartment and holding furnace by flowing ditch, described stream ditch is higher by furnace bottom
200mm, the uniformity of copper liquid flowing can be promoted, the effect of slagging-off can be played；Online degasification dress is installed in described compartment
Put, be filled with 99.996% argon gas into copper liquid by online depassing unit, and by controlled rotation graphite shaft and rotor, will
In the argon gas press-in copper liquid of metering and micro-bubble is dispersed as, it is uniformly dispersed in copper liquid, so as to reach degasification, deoxidation
Purpose；Described argon gas export pressure 0.5MPa, flow 0.8Nm3/ h, rotor speed control is in 120r/min.Crystallizer goes out
Coolant-temperature gage is controlled at 30 DEG C, and continuous up-casting speed is 550mm/min.
Described continuously extruded rotating speed is 3.5 revs/min, and the power of continuous extrusion apparatus is 600KW, continuously extruded
Ratio is 25, extrusion ratio 1.5, and extrusion temperature is 850 DEG C, is used after continuously extruded cold rapidly containing 20% alcoholic solution
But to 30 DEG C, its crystallite dimension of the Cu alloy material of continuously extruded preparation is 0.005mm.
Described cold deformation carries out cold deformation using 95% working modulus；Described solution hardening is 960 DEG C of insulations 30
Minute, water quenching；Second described of cold deformation carries out cold deformation using 45% working modulus；Described subzero treatment uses
Deep-cool treatment equipment, 50 DEG C of temperature reductions per hour, until -180 DEG C, 10 hours are incubated, is then heated up 50 DEG C per hour,
Until room temperature；Described aging temp is 470 DEG C, and the time is 3 hours；A kind of steam turbine generator prepared by described processing technology
Rotor copper alloy, its tensile strength is 690MPa at room temperature, and yield strength is 590 MPa, elongation 20%, conductance
For 55%IACS, softening temperature is 590 DEG C；When temperature is 427 DEG C, its tensile strength is 550MPa, the MPa of yield strength 460,
Elongation 10%.
Embodiment 2
A kind of processing technology of rotor of steam turbo generator copper alloy comprises the following steps：
Melting → continuously extruded → cold deformation → solution hardening → second of cold deformation → subzero treatment → timeliness
Described melting uses horizontal casting or continuous up-casting, and smelting temperature is 1250 DEG C；The high-purity the moon of melting raw material selection
It is pole copper, cupro-nickel intermediate alloy, copper silicon intermediate alloy, copper chromium intermediate alloy, copper zirconium intermediate alloy, copper niobium intermediate alloy, fine silver, pure
Magnesium.
Described copper alloy includes the elements such as copper, nickel, silicon, chromium, silver, magnesium, niobium；The nickel content 2.1%~2.5%, silicon contain
Amount 0.51%~0.60%, chromium content 0.80%, silver content 0.20%, content of magnesium 0.20%, content of niobium 0.10%；
The total content of the elements such as the copper, nickel, silicon, chromium, silver, magnesium, niobium is more than 99.97%, the nickel content, the ratio of silicone content
It is 4.3：1；Silver content, content of magnesium, the ratio of content of niobium are 2：2：1.
It is described using horizontal casting melting when, carry out covering copper liquid surface using cullet and borax, prevent copper liquid from inhaling
Gas；Wherein the ratio of cullet and borax is 3：1；A diameter of 30mm of horizontal casting copper bar, casting speed 500mm/min.
It is described using continuous up-casting melting when, using three disjunctor smelting equipments, described smelting equipment include melting furnace,
Holding furnace, compartment；It is connected between described melting furnace, compartment and holding furnace by flowing ditch, described stream ditch is higher by furnace bottom
200mm, the uniformity of copper liquid flowing can be promoted, the effect of slagging-off can be played；Online degasification dress is installed in described compartment
Put, be filled with 99.996% argon gas into copper liquid by online depassing unit, and by controlled rotation graphite shaft and rotor, will
In the argon gas press-in copper liquid of metering and micro-bubble is dispersed as, it is uniformly dispersed in copper liquid, so as to reach degasification, deoxidation
Purpose；Described argon gas export pressure 0.5MPa, flow 0.8Nm3/ h, rotor speed control is in 120r/min.Crystallizer goes out
Coolant-temperature gage is controlled at 20 DEG C, and continuous up-casting speed is 550mm/min.
Described continuously extruded rotating speed is 3.5 revs/min, and the power of continuous extrusion apparatus is 600KW, continuously extruded
Ratio is 20, extrusion ratio 1.5, and extrusion temperature is 750 DEG C, is used after continuously extruded cold rapidly containing 20% alcoholic solution
But to 30 DEG C, its crystallite dimension of the Cu alloy material of continuously extruded preparation is 0.005mm.
Described cold deformation carries out cold deformation using 90% working modulus；Described solution hardening is 960 DEG C of insulations 30
Minute, water quenching；Second described of cold deformation carries out cold deformation using 35% working modulus；Described subzero treatment uses
Deep-cool treatment equipment, 50 DEG C of temperature reductions per hour, until -180 DEG C, 10 hours are incubated, is then heated up 50 DEG C per hour,
Until room temperature；Described aging temp is 450 DEG C, and the time is 3 hours；A kind of steam turbine generator prepared by described processing technology
Rotor copper alloy, its tensile strength is 725 MPa at room temperature, and yield strength is 610 MPa, elongation 16%, conductance
For 50%IACS, softening temperature is 600 DEG C；When temperature is 427 DEG C, its tensile strength is 590 MPa, yield strength 490
MPa, elongation 6%.
Claims (10)
1. a kind of rotor of steam turbo generator copper alloy and its processing technology, it is characterised in that：By copper, nickel, silicon, chromium, silver, magnesium,
The components such as niobium form, by weight percentage, the nickel content 1.8%~2.5%, silicone content 0.40%~0.60%, chromium content
0.60%~0.80%, silver content 0.10%~0.20%, content of magnesium 0.10%~0.20%, content of niobium 0.05~0.10%；The copper,
The total content of the elements such as nickel, silicon, chromium, silver, magnesium, niobium is more than 99.97%, and the nickel content, the ratio of silicone content are 4.3：1；Silver contains
Amount, content of magnesium, the ratio of content of niobium are 2：2：1；Described processing technology：Melting → continuously extruded → cold deformation → solution hardening
→ second cold deformation → subzero treatment → timeliness；Rotor of steam turbo generator copper alloy prepared by described processing technology,
Its tensile strength is the MPa of 690MPa~725 at room temperature, and yield strength is the MPa of 590 MPa~610, elongation is 16%~
20%, conductance is 50%IACS~55%IACS, and softening temperature is more than 570 DEG C；When temperature is 427 DEG C, its tensile strength is
The MPa of 550MPa~590 MPa, the MPa of yield strength 460~490, elongation 6%~10%.
2. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Described
Melting uses horizontal casting or continuous up-casting, and smelting temperature is 1200 DEG C~1250 DEG C；The high-purity negative electrode of melting raw material selection
It is copper, cupro-nickel intermediate alloy, copper silicon intermediate alloy, copper chromium intermediate alloy, copper zirconium intermediate alloy, copper niobium intermediate alloy, fine silver, pure
Magnesium.
3. a kind of rotor of steam turbo generator copper alloy as claimed in claim 2 and its processing technology, are characterised by：Described
During using horizontal casting melting, carry out covering copper liquid surface using cullet and borax, prevent copper liquid air-breathing；Wherein cullet and
The ratio of borax is 3：1；A diameter of 30mm of horizontal casting copper bar, casting speed 500mm/min.
4. a kind of rotor of steam turbo generator copper alloy as claimed in claim 2 and its processing technology, are characterised by：Described
During using continuous up-casting melting, using three disjunctor smelting equipments, described smelting equipment includes melting furnace, holding furnace, compartment；Institute
It is connected between melting furnace, compartment and the holding furnace stated by flowing ditch, described stream ditch is higher by furnace bottom 200mm, can promote copper liquid stream
Dynamic uniformity, the effect of slagging-off can be played；Online depassing unit is installed in described compartment, passes through online depassing unit
99.996% argon gas is filled with into copper liquid, and by controlled rotation graphite shaft and rotor, by the argon gas press-in copper liquid of metering
And micro-bubble is dispersed as, it is uniformly dispersed in copper liquid, so as to reach the purpose of degasification, deoxidation；Described argon gas goes out
Mouth pressure 0.5MPa, flow 0.8Nm3/ h, rotor speed control is in 120r/min；Crystallizer leaving water temperature is controlled 20 DEG C~30
DEG C, continuous up-casting speed is 550mm/min.
5. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Described
Continuously extruded rotating speed is 3.5 revs/min, and the power of continuous extrusion apparatus be 600KW, continuously extruded ratio for 15~
25, extrusion ratio 1.5, extrusion temperature is 750 DEG C~850 DEG C, uses after continuously extruded and is cooled down rapidly containing 20% alcoholic solution
To being less than 35 DEG C, its crystallite dimension of the Cu alloy material of continuously extruded preparation is 0.003 ~ 0.007mm.
6. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Cold deformation
Cold deformation is carried out using 60%~95% working modulus.
7. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Solid solution is quenched
Fire be 960 DEG C be incubated 30 minutes, water quenching.
8. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Second
Cold deformation carries out cold deformation using 35%~45% working modulus.
9. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：Described
Subzero treatment uses deep-cool treatment equipment, and temperature reduces by 50 DEG C per hour, until -180 DEG C, is incubated 10 hours, then often
50 DEG C of hour heating, until room temperature.
10. a kind of rotor of steam turbo generator copper alloy as claimed in claim 1 and its processing technology, are characterised by：It is described
Aging temp be 450 DEG C~470 DEG C, the time be 3 hours.
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|---|---|---|---|---|
| CN107723502A (en) * | 2017-11-28 | 2018-02-23 | 徐高杰 | A kind of electromagnetism propels device with high-precision V-type copper section bar |
| CN108118180A (en) * | 2017-12-25 | 2018-06-05 | 浙江力博实业股份有限公司 | A kind of preparation method of Cu-Cr-Zr alloy band used for lead frame |
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| CN107723502A (en) * | 2017-11-28 | 2018-02-23 | 徐高杰 | A kind of electromagnetism propels device with high-precision V-type copper section bar |
| CN108118180A (en) * | 2017-12-25 | 2018-06-05 | 浙江力博实业股份有限公司 | A kind of preparation method of Cu-Cr-Zr alloy band used for lead frame |
| CN108118179A (en) * | 2017-12-25 | 2018-06-05 | 浙江力博实业股份有限公司 | A kind of preparation method of high-performance cupraloy band |
| CN108220670A (en) * | 2018-01-11 | 2018-06-29 | 中北大学 | A kind of Cu-Ni-Si-Mg alloy sheet strips casting-rolling method and casting and rolling installation |
| CN111378864A (en) * | 2018-12-27 | 2020-07-07 | 有研工程技术研究院有限公司 | Method for improving conductivity of continuous casting copper-chromium-silver alloy rod |
| CN111378864B (en) * | 2018-12-27 | 2021-06-01 | 有研工程技术研究院有限公司 | Method for improving conductivity of continuous casting copper-chromium-silver alloy rod |
| CN112080664A (en) * | 2020-08-28 | 2020-12-15 | 西安斯瑞先进铜合金科技有限公司 | Copper-zirconium material for motor rotor and preparation method thereof |
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