CN105964971A - Vacuum semi-solid copper rotor die-casting method - Google Patents
Vacuum semi-solid copper rotor die-casting method Download PDFInfo
- Publication number
- CN105964971A CN105964971A CN201610358664.4A CN201610358664A CN105964971A CN 105964971 A CN105964971 A CN 105964971A CN 201610358664 A CN201610358664 A CN 201610358664A CN 105964971 A CN105964971 A CN 105964971A
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- Prior art keywords
- copper
- oxygen
- vacuum
- semisolid
- casting
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Classifications
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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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
Abstract
The invention belongs to the technical field of motors, relates to rotors and particularly provides a vacuum semi-solid copper rotor die-casting method. The vacuum semi-solid copper rotor die-casting method is mainly characterized by comprising the following steps of melting of a copper material, preparation of nondendritic-structure oxygen-free copper, equivalent division, preparation of semi-solid oxygen-free copper, vacuum die-casting and casting of a copper rotor. Compared with the prior art, the vacuum semi-solid copper rotor die-casting method has the advantages that the structure of a product is more compact and balanced, the electric conductivity and dynamic balance performance are better, and the rate of finished products is increased.
Description
Technical field
The invention belongs to motor technology field, relate to rotor, specifically a kind of vacuum semisolid pressure casting copper rotor method.
Background technology
Traditional motor rotor is cast-aluminum rotor.For saves energy, improving electric motor operation effect, someone explores and cast-aluminum rotor changes into copper casting rotor in recent years, but copper casting rotor production difficulty is bigger.
In the production process of copper casting rotor, the copper material melting stage there will be more bubble or the dynamic short circuit of copper liquid stream, causes copper rotor cast-internal to produce pore, cinder hole or generation " hydrogen embrittlement " phenomenon, have a strong impact on the performance quality of copper rotor, thus have influence on the working effect of motor.For anti-oxidation, someone takes in the copper material melting stage, in copper liquid, appropriate surface dopant is added when temperature reaches 800 DEG C, such as Linesless charcoal or alkali or Borax etc., in order to solve mobility, in copper liquid, add appropriate diluent when temperature reaches 1000 DEG C, such as phosphor-copper, but so owing to adding impurity in copper liquid, the electric conductivity of copper casting rotor can be reduced again, the most still have influence on the working effect of motor.
Summary of the invention
The present invention is through investigation, constantly explore, repetition test, purpose is to provide a kind of vacuum semisolid pressure casting copper rotor method, it is possible to preferably solves copper casting rotor and produces a difficult problem, it is ensured that copper material is in fusing, the whole production process of die casting, all without oxidized, do not have pore, cinder hole, finished product " hydrogen embrittlement " phenomenon, it is ensured that the mobility of copper liquid during die casting, be effectively improved the quality of copper casting rotor, performance.
In order to realize above-mentioned task, the technical solution used in the present invention is a kind of vacuum semisolid pressure casting copper rotor method of design, and technological process is as follows:
Copper material melts-prepare non-dendritic structure oxygen-free copper divided in equal amounts prepares semisolid oxygen-free copper evacuated die-casting process semisolid oxygen-free copper-copper casting rotor, wherein:
Copper material fusing step, melts copper material with smelting furnace；
Prepare non-dendritic structure oxygen-free copper step, use non-dendritic structure preparing device, oxygen-free copper is made non-dendritic structure oxygen-free copper；
Divided in equal amounts step, by non-dendritic structure oxygen-free copper, through supercooling, is partitioned into the copper amount required for single rotor；
Preparation semisolid oxygen-free copper step, heats the equivalent non-dendritic structure oxygen-free copper being partitioned into through heating furnace, makes spherical semisolid oxygen-free copper；
Evacuated die-casting process semisolid oxygen-free copper step, loads mould by silicon steel lamination, heating furnace, forcing press is placed in vacuum (-tight) housing together with mould, and at vacuum (-tight) housing outer side connection vacuum pump, spherical semisolid oxygen-free copper automatically rolls into mould by chute, uses forcing press die cast；
Copper casting rotor step, takes out copper casting rotor foundry goods in vacuum (-tight) housing, obtains copper casting rotor product.
In above-mentioned technological process, in order to improve the quality of copper casting rotor further, accelerate die casting step, wherein:
Melt step at copper material, also smelting furnace is placed in vacuum (-tight) housing.
In evacuated die-casting process semisolid oxygen-free copper step, also mould is preheated in heating furnace；Also by silicon steel sheet removing surface in addition, by the demagnetization in addition of silicon steel lamination, preheated.
Due to the fact that step and the measure using above-mentioned technological process, under vacuum anaerobic ambient condition, copper material is prepared as non-dendritic structure oxygen-free copper and spherical semisolid oxygen-free copper, automatically rolls into die casting etc., compared with prior art, there is product without " hydrogen embrittlement " phenomenon, internal pore-free, the finer and smoother densification of structure organization, equilibrium, the remarkable advantages such as electric conductivity and dynamic balance performance are more preferable, yield rate raising.
Detailed description of the invention
Vacuum semisolid pressure casting copper rotor method of the present invention, in concrete process flow steps, wherein in preparation semisolid oxygen-free copper step, the non-dendritic structure oxygen-free copper being partitioned into is heated to 1000-1200 DEG C through intermediate-frequency heating furnace, makes the solid-state rate of non-dendritic structure oxygen-free copper reach 0.4-0.7；Wherein preheating at mould, silicon steel lamination is hankered in advance, through intermediate frequency heating to 600-700 DEG C.
Utilizing the process of the present invention, the copper casting rotor product manufactured experimently out, through installation test, performance is good, works well, it is achieved that the task of the present invention.
Claims (3)
1. a vacuum semisolid pressure casting copper rotor method, is characterized in that using following technological process:
Copper material melts-prepare non-dendritic structure oxygen-free copper divided in equal amounts prepares semisolid oxygen-free copper evacuated die-casting process semisolid oxygen-free copper-copper casting rotor, wherein:
Copper material fusing step, melts copper material with smelting furnace；
Prepare non-dendritic structure oxygen-free copper step, use non-dendritic structure preparing device, oxygen-free copper is made non-dendritic structure oxygen-free copper；
Divided in equal amounts step, by non-dendritic structure oxygen-free copper, through supercooling, is partitioned into the copper amount required for single rotor；
Preparation semisolid oxygen-free copper step, heats the equivalent non-dendritic structure oxygen-free copper being partitioned into through heating furnace, makes spherical semisolid oxygen-free copper；
Evacuated die-casting process semisolid oxygen-free copper step, loads mould by silicon steel lamination, heating furnace, forcing press is placed in vacuum (-tight) housing together with mould, and at vacuum (-tight) housing outer side connection vacuum pump, spherical semisolid oxygen-free copper automatically rolls into mould by chute, uses forcing press die cast；
Copper casting rotor step, takes out copper casting rotor foundry goods in vacuum (-tight) housing, obtains copper casting rotor product.
Vacuum semisolid pressure casting copper rotor method the most according to claim 1, its feature melts step at copper material, is also placed in vacuum (-tight) housing by smelting furnace.
Vacuum semisolid pressure casting copper rotor method the most according to claim 1, mould, in evacuated die-casting process semisolid oxygen-free copper step, is also preheated in heating furnace by its feature；Also by silicon steel sheet removing surface in addition, by the demagnetization in addition of silicon steel lamination, preheated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358664.4A CN105964971B (en) | 2016-05-27 | 2016-05-27 | Vacuum semisolid pressure casting copper rotor method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358664.4A CN105964971B (en) | 2016-05-27 | 2016-05-27 | Vacuum semisolid pressure casting copper rotor method |
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| Publication Number | Publication Date |
|---|---|
| CN105964971A true CN105964971A (en) | 2016-09-28 |
| CN105964971B CN105964971B (en) | 2017-12-08 |
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| CN201610358664.4A Active CN105964971B (en) | 2016-05-27 | 2016-05-27 | Vacuum semisolid pressure casting copper rotor method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745102A (en) * | 2017-11-29 | 2018-03-02 | 江苏鑫海铜业有限公司 | A kind of anaerobic photovoltaic copper bar preparation method |
| CN109997291A (en) * | 2016-11-24 | 2019-07-09 | 法雷奥电机设备公司 | It takes turns the pole of the inductor of rotating electric machine |
Citations (9)
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|---|---|---|---|---|
| JPH10174389A (en) * | 1996-12-12 | 1998-06-26 | Hitachi Ltd | Cage rotor and its manufacture |
| CN1931474A (en) * | 2006-07-25 | 2007-03-21 | 周西省 | Casting process of copper squirrel rotor |
| CN101104889A (en) * | 2007-08-24 | 2008-01-16 | 云南铜业压铸科技有限公司 | Method for smelting pure copper or high-copper alloy raw material |
| CN101108416A (en) * | 2007-08-24 | 2008-01-23 | 云南铜业压铸科技有限公司 | Die-casting method of induction motor copper cage rotor and die casting device thereof |
| CN101847913A (en) * | 2009-03-24 | 2010-09-29 | 通用汽车环球科技运作公司 | The die casting of electric rotors |
| CN102240790A (en) * | 2011-07-20 | 2011-11-16 | 云南铜业压铸科技有限公司 | Brass rotor and preparation process thereof |
| CN102255456A (en) * | 2011-07-20 | 2011-11-23 | 云南铜业压铸科技有限公司 | Energy-saving casting copper rotor motor and manufacturing technology thereof |
| CN103203445A (en) * | 2013-03-29 | 2013-07-17 | 福建尤迪电机制造有限公司 | Preparation method of cast copper cage rotor |
| CN103949611A (en) * | 2014-01-15 | 2014-07-30 | 洛阳轴研科技股份有限公司 | Casting method of open slot copper rotor of electric main shaft |
-
2016
- 2016-05-27 CN CN201610358664.4A patent/CN105964971B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174389A (en) * | 1996-12-12 | 1998-06-26 | Hitachi Ltd | Cage rotor and its manufacture |
| CN1931474A (en) * | 2006-07-25 | 2007-03-21 | 周西省 | Casting process of copper squirrel rotor |
| CN101104889A (en) * | 2007-08-24 | 2008-01-16 | 云南铜业压铸科技有限公司 | Method for smelting pure copper or high-copper alloy raw material |
| CN101108416A (en) * | 2007-08-24 | 2008-01-23 | 云南铜业压铸科技有限公司 | Die-casting method of induction motor copper cage rotor and die casting device thereof |
| CN101847913A (en) * | 2009-03-24 | 2010-09-29 | 通用汽车环球科技运作公司 | The die casting of electric rotors |
| CN102240790A (en) * | 2011-07-20 | 2011-11-16 | 云南铜业压铸科技有限公司 | Brass rotor and preparation process thereof |
| CN102255456A (en) * | 2011-07-20 | 2011-11-23 | 云南铜业压铸科技有限公司 | Energy-saving casting copper rotor motor and manufacturing technology thereof |
| CN103203445A (en) * | 2013-03-29 | 2013-07-17 | 福建尤迪电机制造有限公司 | Preparation method of cast copper cage rotor |
| CN103949611A (en) * | 2014-01-15 | 2014-07-30 | 洛阳轴研科技股份有限公司 | Casting method of open slot copper rotor of electric main shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109997291A (en) * | 2016-11-24 | 2019-07-09 | 法雷奥电机设备公司 | It takes turns the pole of the inductor of rotating electric machine |
| CN107745102A (en) * | 2017-11-29 | 2018-03-02 | 江苏鑫海铜业有限公司 | A kind of anaerobic photovoltaic copper bar preparation method |
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| CN105964971B (en) | 2017-12-08 |
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