CN102644005A - Copper material for manufacturing motor and manufacturing method thereof - Google Patents
Copper material for manufacturing motor and manufacturing method thereof Download PDFInfo
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- CN102644005A CN102644005A CN2011101596329A CN201110159632A CN102644005A CN 102644005 A CN102644005 A CN 102644005A CN 2011101596329 A CN2011101596329 A CN 2011101596329A CN 201110159632 A CN201110159632 A CN 201110159632A CN 102644005 A CN102644005 A CN 102644005A
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Abstract
The invention provides a copper material for manufacturing a motor. The copper material consists of copper and silicon. The copper material comprises the following components in percentage by weight: 0.2-2% of silicon and the balance of copper. A manufacturing method of the copper material comprises the following steps: respectively weighing the copper and the silicon in percentage by weight; putting cathode copper cut in a strip shape and rubbly silicon into a hearth together; then heating a body to be melted; sufficiently stirring the body to be melted at a fused state and uniformly diffusing the silicon in a melted body of the copper; stopping stirring when the temperature of the melted body reaches 1150 DEG C; standing the melted body in a furnace and then casting to obtain an ingot; obtaining a stretching blank on an extruder by using water-seal heat squeezing; and finally, obtaining the copper material by cold drawing. The copper material provided by the invention has the advantages of stronger anti-oxidation and anti-corrosion capabilities, proper conductivity and good mechanical properties, particularly a property that a mechanical property index is not changed in a high-thermal condition. When a rotor conducting strip of a large motor is manufactured, the volume and weight of the motor can relatively reduced, the working reliability of the motor is improved, and the service life is prolonged.
Description
Technical field
The present invention relates to field of metallurgy, relate in particular to the copper material of microalloying, particularly a kind of copper material and method of manufacture thereof that is used for the motor manufacturing.
Background technology
Copper is because its good electroconductibility, good anti-oxidant and erosion resistance, mechanical property and be prone to the performance of machine-shaping preferably are widely used in power transmission, the dynamo-electric manufacturing and other every field.
Be in the equipment of propulsion source with the electric energy, motor is the heart of equipment.In the structure of motor, be that main rotor winding sliver with material is an aorta of keeping its heart works better with copper.Each startup of large-size machine all can cause huge energy input to rotor bar.To be used for the big torque traction electric machine that the city rail bullet train is representative, its work characteristics is that heavy load starting or even overload start, and the start and stop cycle is short, frequency is high.Motor is in shutdown process, and stall can be converted into heat energy makes rotor produce high heat, and along with the rising of sliver temperature, its tensile strength can obviously descend.Because heating and cooling are carried out repeatedly, sliver is influenced by repeated stress, is very easily broken or because of cripling makes rotor winding and stator friction, influences the normal operation of equipment, becomes the principal mode of electrical fault inefficacy.
In the prior art, adopt fine copper to make this type of large-size machine, and improve the intensity of sliver, with the supporting capacity of completion under high loading with the method that strengthens the sliver sectional area.In addition, also there are the cupromanganese of employing or duraluminum to substitute fine copper and make rotor winding sliver.
A kind of scheme before the employing, the sectional area of expanded motor rotor winding sliver, though its tensile strength and rigidity all increase, the size of each component of large-size machine all correspondence increases to some extent, has caused the compelled increase of motor volume and weight.The power consumption certainly that produces owing to the increase of rotor winding rotational inertia also increases thereupon.
The alloyed copper that cupromanganese and other metals and copper constitute owing to tend to contain other metallic elements in these metals, makes that chemical property, conductivity, the mechanical property of these alloyed copper are extremely unstable, and weldableness is poor.Make the end of rotor winding sliver breaks with this type of alloyed copper easily.
Duraluminum is low because of its intensity and antifatigue limiting proportion copper, and in identical application scenario, its working reliability and work-ing life are not as copper material.
Summary of the invention
The invention provides a kind of copper material that motor is made that is used for, the described this copper material that is used for the motor manufacturing will solve the sliver machinery of the Large Rotor that prior art interalloy copper constitutes and the technical problem of physicals difference.
This copper material that motor is made that is used for of the present invention is made up of copper and silicon, and the weight percent of described silicon in described copper material is 0.2%～2%, and surplus is described copper.
Further, the weight percent of described silicon in described copper material is 0.2%～0.5%.
Further, the weight percent of described silicon in described copper material is 0.5%～0.9%.
Further, the weight percent of described silicon in described copper material is 0.9%～1.3%.
Further, the weight percent of described silicon in described copper material is 1.3%～2%.
Further, described copper is a cathode copper.
The present invention also provides the method for manufacture of above-mentioned copper material, wherein, takes by weighing copper and silicon respectively according to weight percent; Cathode copper that cuts into strip and rubbly silicon are dropped into burner hearth together, then the heating treat melt, treat fully to stir when melt becomes molten and make silicon equably fusion be diffused in the melt of copper; When melt temperature reaches 1150 ℃～1170 ℃, stop to stir, quiet stove begins casting and obtains ingot casting after 10～15 minutes; Then ingot casting is heated to 880 ℃～920 ℃; On extrusion machine, adopt the water seal hot extrusion to obtain the blank that stretches again, extrusion speed is 38mm/s～50mm/s, obtains copper material through cold drawing at last.
Confirm through test: silicon and copper have very strong bonding force, and when copper was in molten state, silicon can be easy in the solution that fusion is diffused into copper, and can make this alloyed copper have better mechanical property than fine copper.The tensile strength of the rotor winding sliver that fine copper is made is that 250～270MPa, unit elongation are 7%～10%, and the tensile strength of the rotor winding sliver that silicon-containing alloy copper is made is that 270～310 MPa, unit elongation are greater than 14%.Because silicon is a kind of semiconductor material, so the specific conductivity that alloyed copper can be effectively adjusted in its adding is to satisfy the requirement of electric machine design parameter.When silicone content was among 0.2%～2% in the alloyed copper, alloyed copper can reach the object of the invention.If silicone content is within 0.2% in the alloyed copper, the critical temperature that its mechanical property and high heat are kept mechanical property will obviously descend; If its welding property will obviously descend when silicone content is on 2% in the alloyed copper.
The present invention and prior art are compared, and its effect is actively with tangible.The present invention has overcome the existing deficiency of material on performance that is used for rotor winding sliver, and a kind of copper material of novel microalloying is provided.Copper material of the present invention has stronger anti-oxidant, corrosion resistance, appropriate specific conductivity, and the favorable mechanical performance particularly has the characteristic that its mechanical performance index does not change under the condition of high heat.When the present invention is used for the manufacturing of rotor bar of large-size machine, can reduce the volume and the weight of motor relatively, improve the safety of its work, increase the service life.
Embodiment
The invention provides a kind of copper material that motor is made that is used for, be made up of copper and silicon, the weight percent that described silicon accounts for described copper material is 0.2%～2%, and surplus is described copper.
Further, described copper is a cathode copper.
The present invention makes the method for above-mentioned copper material, takes by weighing copper and silicon respectively according to weight percent, and cathode copper that cuts into strip and rubbly silicon are dropped into burner hearth together; Then the heating treat melt, treat fully to stir when melt becomes molten and make silicon equably fusion be diffused in the melt of copper, when melt temperature reaches 1150 ℃～1170 ℃; Stop to stir; Quiet stove begins casting and obtains ingot casting after 10～15 minutes, then ingot casting is heated to 880 ℃～920 ℃, on extrusion machine, adopts the water seal hot extrusion to obtain the blank that stretches again; Extrusion speed is 38mm/s～50mm/s, obtains copper material through cold drawing at last.
In the actual selection alloyed copper during silicone content, be according to the parameter of electric machine and require to confirm the position of silicone content among 0.2%～2% by the specific conductivity of sliver.
According to the product design requirement; With the certain electric conductivity value is standard; Silicone content is a foundation with this standard in the alloyed copper; Then by required specific conductivity separately, selection determined value in the respective range of " rule of thumb data of silicone content and conductivity relation the alloy " regulation, said " rule of thumb data of silicone content and conductivity relation in the alloy " as follows:
When specific conductivity is (30～20) m/ Ω mm
2The time, silicone content is 0.2%～0.5% in the alloy,
When specific conductivity is (20～12) m/ Ω mm
2The time, silicone content is 0.5%～0.9% in the alloy,
When specific conductivity is (12～10) m/ Ω mm
2The time, silicone content is 0.9%～1.3% in the alloy,
When specific conductivity is (10～6.5) m/ Ω mm
2The time, silicone content is 1.3%～2% in the alloy.
The present invention has effectively improved the mechanical property of material, makes the tensile strength of motor rotor conducting bar improve 10%～15% than fine copper, and the critical temperature of keeping mechanical property under the high hot state is brought up to 400 ℃ by 320 ℃ of fine copper.The present invention is used for the manufacturing and designing of rotor bar of equal-wattage motor, can alleviate the volume and weight of motor significantly, and the work of motor is more reliable, longer service life.
Claims (7)
1. one kind is used for the copper material that motor is made, and it is characterized in that: be made up of copper and silicon, the weight percent of described silicon in described copper material is 0.2%～2%, and surplus is described copper.
2. the copper material that is used for the motor manufacturing as claimed in claim 1, it is characterized in that: the weight percent of described silicon in described copper material is 0.2%～0.5%.
3. the copper material that is used for the motor manufacturing as claimed in claim 1, it is characterized in that: the weight percent of described silicon in described copper material is 0.5%～0.9%.
4. the copper material that is used for the motor manufacturing as claimed in claim 1, it is characterized in that: the weight percent of described silicon in described copper material is 0.9%～1.3%.
5. the copper material that is used for the motor manufacturing as claimed in claim 1, it is characterized in that: the weight percent of described silicon in described copper material is 1.3%～2%.
6. the copper material that is used for the motor manufacturing as claimed in claim 1, it is characterized in that: described copper is a cathode copper.
7. the described a kind of method of manufacture that is used for the copper material of motor manufacturing of claim 1 is characterized in that: take by weighing copper and silicon respectively according to weight percent, cathode copper that cuts into strip and rubbly silicon are dropped into burner hearth together; Then the heating treat melt, treat fully to stir when melt becomes molten and make silicon equably fusion be diffused in the melt of copper, when melt temperature reaches 1150 ℃～1170 ℃; Stop to stir; Quiet stove begins casting and obtains ingot casting after 10～15 minutes, then ingot casting is heated to 880 ℃～920 ℃, on extrusion machine, adopts the water seal hot extrusion to obtain the blank that stretches again; Extrusion speed is 38mm/s～50mm/s, obtains copper material through cold drawing at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101596329A CN102644005A (en) | 2011-06-15 | 2011-06-15 | Copper material for manufacturing motor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101596329A CN102644005A (en) | 2011-06-15 | 2011-06-15 | Copper material for manufacturing motor and manufacturing method thereof |
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| CN102644005A true CN102644005A (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101596329A Pending CN102644005A (en) | 2011-06-15 | 2011-06-15 | Copper material for manufacturing motor and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300714A (en) * | 2013-07-16 | 2015-01-21 | 上海电气集团上海电机厂有限公司 | Novel squirrel-cage motor rotor conducting bar and manufacturing method thereof |
| CN108220544A (en) * | 2018-01-09 | 2018-06-29 | 北京有色金属研究总院 | A kind of preparation method of railway power through track high conductivity copper conductor |
| CN110578070A (en) * | 2019-10-30 | 2019-12-17 | 吉林大学 | Method for improving oxidation resistance of copper by using authigenic non-metallic oxide composite film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236071A (en) * | 2009-03-31 | 2010-10-21 | Nippon Mining & Metals Co Ltd | Cu-Co-Si COPPER ALLOY FOR ELECTRONIC MATERIAL, AND METHOD OF MANUFACTURING THE SAME |
| WO2011065939A1 (en) * | 2009-11-24 | 2011-06-03 | Luvata Appleton Llc | Copper alloy enclosures |
-
2011
- 2011-06-15 CN CN2011101596329A patent/CN102644005A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236071A (en) * | 2009-03-31 | 2010-10-21 | Nippon Mining & Metals Co Ltd | Cu-Co-Si COPPER ALLOY FOR ELECTRONIC MATERIAL, AND METHOD OF MANUFACTURING THE SAME |
| WO2011065939A1 (en) * | 2009-11-24 | 2011-06-03 | Luvata Appleton Llc | Copper alloy enclosures |
Non-Patent Citations (1)
| Title |
|---|
| 王丽等: "C18000铜镍铬硅合金棒生产工艺研究", 《铜加工》, no. 3, 31 December 2006 (2006-12-31), pages 26 - 30 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300714A (en) * | 2013-07-16 | 2015-01-21 | 上海电气集团上海电机厂有限公司 | Novel squirrel-cage motor rotor conducting bar and manufacturing method thereof |
| CN108220544A (en) * | 2018-01-09 | 2018-06-29 | 北京有色金属研究总院 | A kind of preparation method of railway power through track high conductivity copper conductor |
| CN110578070A (en) * | 2019-10-30 | 2019-12-17 | 吉林大学 | Method for improving oxidation resistance of copper by using authigenic non-metallic oxide composite film |
| CN110578070B (en) * | 2019-10-30 | 2021-04-13 | 吉林大学 | Method for improving oxidation resistance of copper by using authigenic non-metallic oxide composite film |
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Application publication date: 20120822 |