CN103203445A - Preparation method of cast copper cage rotor - Google Patents
Preparation method of cast copper cage rotor Download PDFInfo
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- CN103203445A CN103203445A CN2013101085888A CN201310108588A CN103203445A CN 103203445 A CN103203445 A CN 103203445A CN 2013101085888 A CN2013101085888 A CN 2013101085888A CN 201310108588 A CN201310108588 A CN 201310108588A CN 103203445 A CN103203445 A CN 103203445A
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Abstract
The invention discloses a preparation method of a cast copper cage rotor. The preparation method comprises the following steps of: firstly preparing a cast mold cavity by adopting lost-wax investment molding technology; and then placing the cast mold cavity on a low pressure casting machine to perform quick casting molding. According to the preparation method of the cast copper cage rotor, the lost-wax investment molding technology and the low pressure casting technology are combined; a rubber wax-casting mold used in the lost-wax investment molding technology is not only low in cost and convenient to demold but also capable of being used repeatedly; the low pressure casting machine is used for quickly casting and molding the cast mold cavity in the low pressure casting technology, the production efficiency is high, and the whole cast mold cavity is full of copper water from the bottom up quickly under the pressure during the casting process; the casting speed is high, and a conducting bar of the rotor is not easy to disconnect during quick casting process of copper water; and no matter inside or on the surface of the prepared cage rotor, bubbles are not easy to form, so that the quality of the prepared cage rotor is improved.
Description
Technical field
The present invention relates to field of motor manufacturing, relate in particular to a kind of preparation method of cast copper cage rotor.
Background technology
Because conduction, the heat conductivility of copper are very good, be widely used in and make various electric wires, cable etc., use less at the cage rotor of cast type alternating current asynchronous induction machine.In recent years, along with the development of motor high efficiency, the research and development of cast copper cage rotor have all been carried out both at home and abroad.Extrusion process is used in the preparation of cast copper cage rotor at present more, for example number of patent application is CN200710066135.8, patent name is in the patent of invention of " a kind of pressure casting method of induction motor copper cage rotor and die casting equipment ", a kind of pressure casting method and die casting equipment of inductor motor copper cage rotor are disclosed, be applicable to the die casting of fine copper and high-copper alloy, belong to non-ferrous metal metallurgy and calendering processing technique field.The pressure casting method of this invention comprises mould preliminary treatment, the melting of copper material, liquation die cast, reaches the hardening refrigerating work procedure.The die casting equipment that the pressure casting method of this invention adopts is made of die casting machine and melting furnace, and wherein: melting furnace is included as crucible and the intermediate frequency furnace of one; The die casting machine mould comprises that a plurality of assemblies of inserting of employing are connected.Because the fusing point height of copper, so above pressure casting method exists the die casting life-span short, the finished product rate is low, and production cost is higher, is unfavorable for the shortcomings such as manufacturing of large rotor.
And number of patent application is CN201210172773.9, patent name is in the patent of invention of " a kind of method of cage rotor fine copper casting ", disclose a kind of method of cage rotor casting fine copper, it may further comprise the steps: 1) apply one deck high-temperature insulation coating in rotor core earlier; 2) sheathed rubber casting wax pattern tool in rotor core then waters and casts out the wax pattern identical with default cage rotor shape, and prefabricated cast gate wax pattern and the rising head wax pattern of welding; 3) manufacture the sand mold shell outside rotor core and wax pattern, and the sand mold shell is solidified, heating makes the wax-pattern fusing and wax liquid is poured out, and then the sand mold shell is put into sandbox; 4) the heating sandbox pours into 1100-1200 ℃ copper water then to 500-750 ℃ in the sand mold shell; 5) treat sandbox cooling after, remove sand mold shell, cast gate and rising head, obtain described cast copper cage rotor.Adopt above method, though the rubber casting wax pattern tool cost that uses is low, can reuse, but because the fusing point height of fine copper, easy oxidation and flowability are poor, production efficiency is low, and the easy bar that breaks that produces of the rotor bar of preparation, and the cage rotor of preparation is no matter be that inside or surface easily exist bubble.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of production efficiency height, cost is low, and the rotor bar of preparation is difficult for the preparation method of the cast copper cage rotor of the disconnected bar of generation.
Technical scheme of the present invention is: a kind of preparation method of cast copper cage rotor, described preparation method adopt dewax fusible pattern technology preparation cast die cavity earlier, will pour into a moulds die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applies one deck high-temperature insulation coating in rotor core earlier;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in the end ring position welding of wax pattern downside in advance with the cast gate wax pattern of wax system, in the end ring position welding of wax pattern upside in advance with the rising head wax pattern of wax system;
3) make the sand mold shell outside rotor core and wax pattern, and the sand mold shell is solidified, heating sand mold shell makes the wax pattern fusing, and wax liquid is poured out, and then the sand mold shell is put into sandbox;
4) with electric induction furnace the copper water in the crucible of low die casting machine is heated, Jiang Tongshui is heated to 1100 ~ 1200 ℃; The sandbox that will be heated to 150 ~ 350 ℃ then places on the low die casting machine;
5) again the cast gate of sandbox bottom is aimed at the cone-shaped gate that hangs down die casting machine, upper cavity toward the interior crucible of low die casting machine feeds Compressed Gas, force the interior copper water of crucible to pour into and be full of the die cavity of whole sand mold shell by the cast gate of sandbox bottom, pressurize is carried out in sand mold shell mould chamber, after copper water-setting in sand mold shell mould chamber is solid, remove the Compressed Gas of crucible upper cavity, sandbox is taken off from low die casting machine;
6) treat sandbox cooling after, remove sand mold shell, cast gate and rising head, obtain described cast copper cage rotor.
The raw material of the high-temperature insulation coating in the described step 1) is one or more the mixing in following: waterglass, above thin silica flour, fine ceramic powder or other exotic material of 250 orders are connected thereby can prevent from producing between the electrical sheet surface of the copper water that pours into later and rotor core.
The raw material of the sand mold shell in the described step 3) is quartz sand and waterglass.
The raw material of the sand mold shell in the described step 3) can also be resin sand.
In the described step 3), it is to adopt the feeding carbon dioxide that the sand mold shell is solidified fast that the sand mold shell solidifies.
In the described step 3), after the sand mold shell is put into sandbox, between sandbox and sand mold shell, tamp sand, be convenient to the fixing of sand mold shell, after also being convenient to back Tong Shui and pouring into the sand mold shell, even sand mold shell part is now split, also can not cause the casting failure.
In the described step 4), in the crucible of low die casting machine, feed inert gas or reducibility gas earlier, and then with electric induction furnace the copper water in the crucible is heated, thereby can prevent that copper water is oxidized.
In the described step 4), sandbox is heated to 150 ~ 350 ℃, and main purpose is that iron core is carried out preheating, thoroughly gasification residual steam and volatile foreign material in rotor core and sand, prevent above steam and volatile foreign material to the influence of back copper water pouring operation, thereby improve the quality of products.Relative prior art can reduce the heating-up temperature of sandbox, because copper water pouring operation of the present invention under low pressure carries out.Under low pressure, can make copper water be full of the die cavity of whole sand mold shell fast, the flowing velocity of copper water is fast, so do not need by rotor core is heated to 500 ℃ with on guarantee the flowability of copper water, so not only can reduce the preheat temperature of rotor core, reduce distortion unshakable in one's determination, can also improve the flowability of copper water, and then improved the production efficiency of cast copper cage rotor.
The preparation method of cast copper cage rotor of the present invention, in conjunction with dewax fusible pattern technology and low-pressure casting process, the rubber casting wax pattern tool that uses in the dewax fusible pattern technology not only with low cost, be convenient in demoulding, and can repeatedly reuse; Adopt low die casting machine that the cast die cavity is carried out quick casting in the low-pressure casting process, production efficiency height not only, and in the casting process, copper water is full of whole cast die cavity fast from the bottom up under pressure, not only casting speed is fast, and copper water is in quick casting process, and rotor bar is difficult for producing disconnected bar, the cage rotor of preparation is no matter be that inside or surface are difficult for existing bubble, thus the quality of the cage rotor of raising preparation.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Structural representation when Fig. 1 casts for cast copper cage rotor of the present invention.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the specific embodiment.
As shown in Figure 1, technical scheme of the present invention is: a kind of preparation method of cast copper cage rotor, described preparation method adopts dewax fusible pattern technology preparation cast die cavity earlier, will pour into a mould die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applies one deck high-temperature insulation coating in rotor core 1 earlier;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) 1 then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in end ring position 2 weldings of wax pattern downside in advance with the cast gate wax pattern of wax system, in end ring position 3 weldings of wax pattern upside in advance with rising head (exhaust outlet of the holding concurrently) wax pattern of wax system;
3) make sand mold shell 4 outside rotor core 1 and wax pattern, and sand mold shell 4 is solidified, heating sand mold shell 4 makes the wax pattern fusing, and wax liquid is poured out, and then sand mold shell 4 is put into sandbox 5;
4) with electric induction furnace the copper water 8 in the crucible 7 of low die casting machine 6 is heated, copper water 8 is heated to 1100 ~ 1200 ℃; The sandbox 5 that will be heated to 150 ~ 350 ℃ then places on the low die casting machine 6;
5) again the cast gate 9 of sandbox 5 bottoms is aimed at the cone-shaped gate 10 that hangs down die casting machine, feed Compressed Gas toward the upper cavity of hanging down the crucible 7 in the die casting machine 6, force crucible 7 interior copper water 8 to pour into and be full of the die cavity of whole sand mold shell 4 by the cast gate 9 of sandbox 5 bottoms, sand mold shell 4 die cavities are carried out pressurize, after copper water 8 in sand mold shell 4 die cavities solidifies, remove the Compressed Gas of crucible 7 upper cavity, sandbox 5 is taken off from low die casting machine 6;
6) treat sandbox 5 cooling after, remove sand mold shell 4, cast gate 9 and rising head 11, obtain described cast copper cage rotor.
Embodiment 1
A kind of preparation method of cast copper cage rotor, described preparation method adopt dewax fusible pattern technology preparation cast die cavity earlier, will pour into a moulds die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applying one deck in rotor core 1 earlier is the high-temperature insulation coating of raw material with waterglass;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) 1 then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in end ring position 2 weldings of wax pattern downside in advance with the cast gate wax pattern of wax system, in end ring position 3 weldings of wax pattern upside in advance with the rising head wax pattern of wax system;
3) outside rotor core 1 and wax pattern, be that raw material is made sand mold shell 4 with quartz sand and waterglass, and feed carbon dioxide sand mold shell 4 is solidified, heating sand mold shell 4 makes the wax pattern fusing, and wax liquid is poured out, then sand mold shell 4 is put into sandbox 5, tamp sand 12 at sandbox 5 and 4 on sand mold shell;
4) in the crucible 7 of low die casting machine 6, feed inert gas or reducibility gas, with electric induction furnace the copper water 8 in the crucible 7 of low die casting machine 6 is heated again, copper water 8 is heated to 1100 ℃; The sandbox 5 that will be heated to 350 ℃ then places on the low die casting machine 6;
5) again the cast gate 9 of sandbox 5 bottoms is aimed at the cone-shaped gate 10 that hangs down die casting machine 6, feed Compressed Gas by Compressed Gas pipeline 13 toward the upper cavity of hanging down the crucible 7 in the die casting machine 6, force crucible 7 interior copper water 8 to pour into and be full of the die cavity of whole sand mold shell 4 from the cast gate 9 of sandbox 5 bottoms by the depositing 14 of low die casting machine, sand mold shell 4 die cavities are carried out pressurize, after copper water 8 in sand mold shell 4 die cavities solidifies, remove the Compressed Gas of crucible 7 upper cavity, sandbox 5 is taken off from low die casting machine 6;
6) treat sandbox 5 cooling after, remove sand mold shell 4, cast gate 9 and rising head 11, obtain described cast copper cage rotor.
Embodiment 2
A kind of preparation method of cast copper cage rotor, described preparation method adopt dewax fusible pattern technology preparation cast die cavity earlier, will pour into a moulds die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applying one deck in rotor core 1 earlier is the high-temperature insulation coating of raw material with the fine ceramic powder;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) 1 then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in end ring position 2 weldings of wax pattern downside in advance with the cast gate wax pattern of wax system, in end ring position 3 weldings of wax pattern upside in advance with the rising head wax pattern of wax system;
3) outside rotor core 1 and wax pattern be that raw material is made sand mold shell 4 with resin sand, and feed carbon dioxide sand mold shell 4 is solidified, heating sand mold shell 4 makes the wax pattern fusing, and wax liquid is poured out, then sand mold shell 4 is put into sandbox 5, tamp sand 12 at sandbox 5 and 4 on sand mold shell;
4) in the crucible 7 of low die casting machine 6, feed inert gas or reducibility gas, with electric induction furnace the copper water 8 in the crucible 7 of low die casting machine 6 is heated again, copper water 8 is heated to 1200 ℃; The sandbox 5 that will be heated to 150 ℃ then places on the low die casting machine 6;
5) again the cast gate 9 of sandbox 5 bottoms is aimed at the cone-shaped gate 10 that hangs down die casting machine 6, feed Compressed Gas by Compressed Gas pipeline 13 toward the upper cavity of hanging down the crucible 7 in the die casting machine 6, force crucible 7 interior copper water 8 to pour into and be full of the die cavity of whole sand mold shell 4 from the cast gate 9 of sandbox 5 bottoms by the depositing 14 of low die casting machine, sand mold shell 4 die cavities are carried out pressurize, after copper water 8 in sand mold shell 4 die cavities solidifies, remove the Compressed Gas of crucible 7 upper cavity, sandbox 4 is taken off from low die casting machine 6;
6) treat sandbox 5 cooling after, remove sand mold shell 4, cast gate 9 and rising head 11, obtain described cast copper cage rotor.
Embodiment 3
A kind of preparation method of cast copper cage rotor, described preparation method adopt dewax fusible pattern technology preparation cast die cavity earlier, will pour into a moulds die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applying one deck in rotor core 1 earlier is the high-temperature insulation coating of raw material with waterglass and the thin silica flour more than 250 orders;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) 1 then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in end ring position 2 weldings of wax pattern downside in advance with the cast gate wax pattern of wax system, in end ring position 3 weldings of wax pattern upside in advance with the rising head wax pattern of wax system;
3) outside rotor core 1 and wax pattern, be that raw material is made sand mold shell 4 with quartz sand and waterglass, and feed carbon dioxide sand mold shell 4 is solidified, heating sand mold shell 4 makes the wax pattern fusing, and wax liquid is poured out, then sand mold shell 4 is put into sandbox 5, tamp sand 12 at sandbox 5 and 4 on sand mold shell;
4) in the crucible 7 of low die casting machine 6, feed inert gas or reducibility gas, with electric induction furnace the copper water 8 in the crucible 7 of low die casting machine 6 is heated again, copper 8 water are heated to 1150 ℃; The sandbox 5 that will be heated to 220 ℃ then places on the low die casting machine 6;
5) again the cast gate 9 of sandbox 5 bottoms is aimed at the cone-shaped gate 10 that hangs down die casting machine 6, feed Compressed Gas by Compressed Gas pipeline 13 toward the upper cavity of hanging down the crucible 7 in the die casting machine 6, force crucible 7 interior copper water 8 to pour into and be full of the die cavity of whole sand mold shell 4 from the cast gate 9 of sandbox 5 bottoms by the depositing 14 of low die casting machine, sand mold shell 4 die cavities are carried out pressurize, after copper water 8 in sand mold shell 4 die cavities solidifies, remove the Compressed Gas of crucible 7 upper cavity, sandbox 5 is taken off from low die casting machine 6;
6) treat sandbox 5 cooling after, remove sand mold shell 4, cast gate 9 and rising head 11, obtain described cast copper cage rotor.
Claims (7)
1. the preparation method of a cast copper cage rotor is characterized in that: described preparation method adopts dewax fusible pattern technology preparation cast die cavity earlier, will pour into a mould die cavity again and be placed on to hang down on the die casting machine and carry out quick casting, and it may further comprise the steps:
1) applies one deck high-temperature insulation coating in rotor core earlier;
2) the rubber casting wax pattern tool of sheathed cage rotor in the rotor core of handling through step 1) then waters and casts out the wax pattern identical with default cage rotor shape; After sloughing the casting wax pattern tool, in the end ring position welding of wax pattern downside in advance with the cast gate wax pattern of wax system, in the end ring position welding of wax pattern upside in advance with the rising head wax pattern of wax system;
3) make the sand mold shell outside rotor core and wax pattern, and the sand mold shell is solidified, heating sand mold shell makes the wax pattern fusing, and wax liquid is poured out, and then the sand mold shell is put into sandbox;
4) with electric induction furnace the copper water in the crucible of low die casting machine is heated, Jiang Tongshui is heated to 1100 ~ 1200 ℃; The sandbox that will be heated to 150 ~ 350 ℃ then places on the low die casting machine;
5) again the cast gate of sandbox bottom is aimed at the cone-shaped gate that hangs down die casting machine, upper cavity toward the interior crucible of low die casting machine feeds Compressed Gas, force the interior copper water of crucible to pour into and be full of the die cavity of whole sand mold shell by the cast gate of sandbox bottom, pressurize is carried out in sand mold shell mould chamber, after copper water-setting in sand mold shell mould chamber is solid, remove the Compressed Gas of crucible upper cavity, sandbox is taken off from low die casting machine;
6) treat sandbox cooling after, remove sand mold shell, cast gate and rising head, obtain described cast copper cage rotor.
2. the preparation method of cast copper cage rotor according to claim 1 is characterized in that: the raw material of the high-temperature insulation coating in the described step 1) is one or more the mixing in following: waterglass, above thin silica flour or the fine ceramic powder of 250 orders.
3. the preparation method of cast copper cage rotor according to claim 1, it is characterized in that: the raw material of the sand mold shell in the described step 3) is quartz sand and waterglass.
4. the preparation method of cast copper cage rotor according to claim 1, it is characterized in that: the raw material of the sand mold shell in the described step 3) is resin sand.
5. the preparation method of cast copper cage rotor according to claim 3 is characterized in that: in the described step 3), it is to adopt to feed carbon dioxide the sand mold shell is solidified fast that the sand mold shell solidifies.
6. the preparation method of cast copper cage rotor according to claim 1 is characterized in that: in the described step 3), after the sand mold shell is put into sandbox, tamp sand between sandbox and sand mold shell.
7. the preparation method of cast copper cage rotor according to claim 1 is characterized in that: in the described step 4), feed inert gas or reducibility gas earlier in the crucible of low die casting machine, and then with electric induction furnace the copper water in the crucible is heated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310108588.8A CN103203445B (en) | 2013-03-29 | 2013-03-29 | A kind of preparation method of cast copper cage rotor |
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| CN201310108588.8A CN103203445B (en) | 2013-03-29 | 2013-03-29 | A kind of preparation method of cast copper cage rotor |
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| CN103203445A true CN103203445A (en) | 2013-07-17 |
| CN103203445B CN103203445B (en) | 2016-09-21 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103785795A (en) * | 2014-01-15 | 2014-05-14 | 洛阳轴研科技股份有限公司 | Casting method for solid cage rotor |
| CN104117635A (en) * | 2014-07-03 | 2014-10-29 | 浙江汉声精密机械有限公司 | Improved rotor sand mold |
| CN104190875A (en) * | 2014-09-12 | 2014-12-10 | 中国船舶重工集团公司第十二研究所 | Composite casting mold forming method for complex thin-wall casing |
| CN105834363A (en) * | 2016-06-03 | 2016-08-10 | 扬州峰明金属制品有限公司 | Precise low-pressure lost wax casting system |
| CN103795197B (en) * | 2014-01-15 | 2016-08-17 | 洛阳轴研科技股份有限公司 | A kind of casting method of electro spindle closed slot copper rotor |
| CN105880521A (en) * | 2016-05-03 | 2016-08-24 | 宋照峰 | Casting method of copper rotor |
| CN105945258A (en) * | 2016-06-03 | 2016-09-21 | 扬州峰明金属制品有限公司 | Low-pressure fusible mold precise casting process |
| CN105964971A (en) * | 2016-05-27 | 2016-09-28 | 宋照峰 | Vacuum semi-solid copper rotor die-casting method |
| CN107498025A (en) * | 2017-08-22 | 2017-12-22 | 福建聚能机械制造有限公司 | Low-pressure casting method for aluminum alloy motor casing with built-in spiral coil water channel |
| CN107511469A (en) * | 2017-10-13 | 2017-12-26 | 安阳恒安电机有限公司 | A kind of squirrel cage motor rotor low pressure cast copper equipment, cast copper and its cast copper method |
| CN109128024A (en) * | 2018-09-18 | 2019-01-04 | 西安西工大超晶科技发展有限责任公司 | A kind of method that casting is quickly developed |
| CN110090924A (en) * | 2019-05-30 | 2019-08-06 | 保定风帆精密机械科技有限公司 | A kind of Wax mold of interior reticulate pattern casing precision casting and its manufacture and casting method |
| CN111496225A (en) * | 2020-05-22 | 2020-08-07 | 山西电机制造有限公司 | Low-pressure cast aluminum pressurizing process for cast aluminum rotor of three-phase asynchronous high-voltage motor |
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| CN102904350A (en) * | 2012-10-16 | 2013-01-30 | 浙江京马电机有限公司 | Copper induction motor |
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| CN1122065A (en) * | 1994-10-26 | 1996-05-08 | 富士电机株式会社 | Method for low pressure casti squirrel-cage rotator |
| CN102688986A (en) * | 2012-05-30 | 2012-09-26 | 福建尤迪电机制造有限公司 | Method for casting squirrel cage rotor with fine copper |
| CN102904350A (en) * | 2012-10-16 | 2013-01-30 | 浙江京马电机有限公司 | Copper induction motor |
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| CN103795197B (en) * | 2014-01-15 | 2016-08-17 | 洛阳轴研科技股份有限公司 | A kind of casting method of electro spindle closed slot copper rotor |
| CN103785795A (en) * | 2014-01-15 | 2014-05-14 | 洛阳轴研科技股份有限公司 | Casting method for solid cage rotor |
| CN104117635A (en) * | 2014-07-03 | 2014-10-29 | 浙江汉声精密机械有限公司 | Improved rotor sand mold |
| CN104190875A (en) * | 2014-09-12 | 2014-12-10 | 中国船舶重工集团公司第十二研究所 | Composite casting mold forming method for complex thin-wall casing |
| CN105880521B (en) * | 2016-05-03 | 2018-09-14 | 宋照峰 | Copper rotor casting method |
| CN105880521A (en) * | 2016-05-03 | 2016-08-24 | 宋照峰 | Casting method of copper rotor |
| CN105964971A (en) * | 2016-05-27 | 2016-09-28 | 宋照峰 | Vacuum semi-solid copper rotor die-casting method |
| CN105945258A (en) * | 2016-06-03 | 2016-09-21 | 扬州峰明金属制品有限公司 | Low-pressure fusible mold precise casting process |
| CN105945258B (en) * | 2016-06-03 | 2018-05-04 | 扬州峰明金属制品有限公司 | A kind of low pressure investment precision casting technology |
| CN105834363B (en) * | 2016-06-03 | 2018-05-22 | 扬州峰明金属制品有限公司 | A kind of low pressure loses the close casting system of cerotin |
| CN105834363A (en) * | 2016-06-03 | 2016-08-10 | 扬州峰明金属制品有限公司 | Precise low-pressure lost wax casting system |
| CN107498025A (en) * | 2017-08-22 | 2017-12-22 | 福建聚能机械制造有限公司 | Low-pressure casting method for aluminum alloy motor casing with built-in spiral coil water channel |
| CN107511469A (en) * | 2017-10-13 | 2017-12-26 | 安阳恒安电机有限公司 | A kind of squirrel cage motor rotor low pressure cast copper equipment, cast copper and its cast copper method |
| CN109128024A (en) * | 2018-09-18 | 2019-01-04 | 西安西工大超晶科技发展有限责任公司 | A kind of method that casting is quickly developed |
| CN110090924A (en) * | 2019-05-30 | 2019-08-06 | 保定风帆精密机械科技有限公司 | A kind of Wax mold of interior reticulate pattern casing precision casting and its manufacture and casting method |
| CN110090924B (en) * | 2019-05-30 | 2024-02-09 | 保定风帆精密机械科技有限公司 | Wax mould for inner net sleeve precise casting and manufacturing and casting method thereof |
| CN111496225A (en) * | 2020-05-22 | 2020-08-07 | 山西电机制造有限公司 | Low-pressure cast aluminum pressurizing process for cast aluminum rotor of three-phase asynchronous high-voltage motor |
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