CN105798262A - Production process for integrated type water-cooled motor shell of new energy automobile - Google Patents
Production process for integrated type water-cooled motor shell of new energy automobile Download PDFInfo
- Publication number
- CN105798262A CN105798262A CN201610180277.6A CN201610180277A CN105798262A CN 105798262 A CN105798262 A CN 105798262A CN 201610180277 A CN201610180277 A CN 201610180277A CN 105798262 A CN105798262 A CN 105798262A
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- Prior art keywords
- water
- motor cabinet
- cooling motor
- motor shell
- energy automobile
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 50
- 238000005266 casting Methods 0.000 claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 10
- 239000006104 solid solution Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 53
- 239000004576 sand Substances 0.000 claims description 34
- 238000005516 engineering process Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 239000003973 paint Substances 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 5
- 238000013003 hot bending Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000032683 aging Effects 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 108091006146 Channels Proteins 0.000 description 14
- 102000010637 Aquaporins Human genes 0.000 description 11
- 108010063290 Aquaporins Proteins 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009736 wetting Methods 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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a production process for an integrated type water-cooled motor shell of a new energy automobile, and belongs to the field of motor shell production and manufacturing. The main process is characterized in that a precoated sand core manufacturing method is adopted for manufacturing a water channel core, the outer layer of the water channel core and the interior of a mold core are coated with refractory matter, then the water channel core is fixed into a mold, and a water-cooled motor shell casting blank is obtained through low-pressure pouring; then the water-cooled motor shell casting blank is subject to solid solution aging treatment, and after solid solution aging treatment is completed, welding sealing is carried out on a process hole of a water-cooled motor shell casting; and finally, the outer side of the water-cooled motor shell is subject to cleaning, precision machining and checking to obtain the integrated type water-cooled motor shell finished product. The production process is simple, time and labor are saved, the production efficiency is high, and the manufacturing cost is low; and the produced motor shell is subject to molten aluminum integrated casting molding, the radiating performance is good, the inner wall of the motor shell is smooth and flat, the combination property of the product is stable, and the requirement of a water-cooled drive motor of the new energy automobile can be well met.
Description
Technical field
The present invention relates to the production technology of a kind of new-energy automobile integral type water-cooling motor cabinet, belong to motor casing and manufacture field.
Background technology
At present, the production field of new-energy automobile water cooling motor housing, main process has two kinds, a kind of be inner shell and shell two body welding method, this process needs casting inner shell and shell respectively, then distinguishes machining, processes spiral channel on inner shell, then integral solder again, time-consuming, inefficiency, cost is high, and quality is unstable, it is easy to occur that weld seam leaks.Another kind is that pre-buried copper pipe or the embedding casting of stainless steel tube are in the method within motor casing, the drawback of this technique is that water channel is different from body material, heat conductivity and the coefficient of expansion are all different, and one after embedding casting, cannot be formed, cause that the heat dispersion of water-cooled casing is poor, it is impossible to meet the requirement of new-energy automobile water-cooled machine.
Summary of the invention
According to above deficiency of the prior art, the problem to be solved in the present invention is: providing a kind of perfect heat-dissipating, yield rate is high, beautiful appearance, combination property is stable, it is possible to meet the production technology of the new-energy automobile integral type water-cooling motor cabinet of new-energy automobile drive motor requirement.
The technical solution adopted for the present invention to solve the technical problems is:
The production technology of described new-energy automobile integral type water-cooling motor cabinet, comprises the following steps:
The first step, adopts precoated sand core-making method to make water channel core, and is coated with refractory material at water channel core outer layer；
Second step, is coated with refractory material by the core of water-cooling motor cabinet mould, then will scribble refractory material water channel core and be fixed in mould；
3rd step, carries out low-pressure casting acquisition water-cooling motor cabinet foundry goods blank by low-pressure casting process by the aluminum liquid of gas furnace melting in mould；
4th step, carries out fixation rates to water-cooling motor cabinet foundry goods blank；Water-cooling motor cabinet hardness and intensity are strengthened, and the precoated sand that water channel core is used carries out the defeated and dispersed process of high temperature, discharges it housing；
5th step, after fixation rates completes, carries out welded seal to casting technique hole required in water-cooling motor cabinet foundry goods manufacturing process；
6th step, to clearing up outside water-cooling motor cabinet, precision optical machinery processing and inspection obtain integral type water-cooling motor cabinet finished product.
The production technology of described new-energy automobile integral type water-cooling motor cabinet by being heated solidification by precoated sand, make and form precoated sand spiral channel core, the temperature being heating and curing controls at 220-240 degree, the spiral channel core formed is fixed in motor casing integrated mould, integral type water-cooling motor cabinet is obtained by the aluminum liquid low-pressure casting of fusing to mould, this technique is time saving and energy saving, make efficiency is high, cost is low, constant product quality is good, perfect heat-dissipating, do not have weld seam seepy question, the problem existing for pre-buried stainless steel tube or copper pipe can also be overcome simultaneously.
Preferred further, precoated sand core-making method is to adopt 40-70 order thermosetting phenolic resin precoated sand, gas forming amount≤10ml/g, room temperature bending strength >=4MPa, and hot bending strength >=4MPa, sand adopts high-temperature roasting sand.Thermosetting phenolic resin has very strong wetting capacity, and processability is good, and bulk density is big, and the porosity is low, adopts high-temperature roasting sand can increase substantially the intensity of precoated sand.
Preferred further, refractory material adopts alcohol radical graphite paint.Alcohol radical graphite paint good stability, has excellent thixotropy and levelability, and gas forming amount is little, has excellent anti-stick grittiness, it is possible to ensure that cast(ing) surface is bright and clean.
Preferred further, aluminum liquid adopts the fusing of natural gas aluminium melting furnace to obtain, and material is A356.The casting characters such as the aluminum liquid of A356 has good fluidity, and without hot cracking tendency, linear shrinkage is little, and air-tightness is good, and proportion is little, corrosion resistance is good, easy gas welding.
Preferred further, fixation rates adopts T6 to process technique, and solid solution temperature retention time is 8-10 hour, and timeliness temperature retention time is 5-7 hour.Improving water-cooling motor cabinet hardness and intensity, solid solubility temperature is 530-540 degree, and under high temperature, precoated sand is defeated and dispersed, is got rid of by the clearance hole on housing, and precoated sand forms spiral channel after discharging between inner shell and shell.
Preferred further, welding adopts argon arc welding that casting technique hole is welded.
The present invention is had the beneficial effect that
The production technology of new-energy automobile integral type water-cooling motor cabinet of the present invention is simple, time saving and energy saving, production efficiency is high, and cost of manufacture is low, and the motor case that this technique produces all adopts aluminum liquid integrally casting molding, perfect heat-dissipating, motor casing inner wall smooth is smooth, beautiful appearance, and product combination property is stable, do not have weld seam seepy question, it is possible to well meet the requirement of new-energy automobile water cooling driving motor.
Detailed description of the invention
Below embodiments of the invention are described further:
Embodiment 1:
A kind of energy automobile integral type water-cooling motor cabinet of 200KW, design 9 circle spiral channels, its assemble after for Public Transport Trade, it is desirable to it is safe efficient to guarantee to, good toughness, the combination property such as lightweight that motor casing has good quick heat radiating, intensity.Adopted main technique be:
The first step, adopts precoated sand core-making method to make spiral channel core, and is coated with alcohol radical graphite paint at spiral channel core outer layer；Wherein, precoated sand core-making method is to adopt 40-70 order thermosetting phenolic resin precoated sand, gas forming amount≤10ml/g, room temperature bending strength >=4MPa, hot bending strength >=4MPa；Sand adopts high-temperature roasting sand.
Second step, is coated with alcohol radical graphite paint by the core of water-cooling motor cabinet mould, is then fixed in mould by the spiral channel core scribbling alcohol radical graphite paint；
3rd step, is that A356 aluminum liquid carries out low-pressure casting acquisition water-cooling motor cabinet foundry goods blank by low-pressure casting process in mould by the material that the fusing of natural gas aluminium melting furnace obtains；
4th step, carries out fixation rates to water-cooling motor cabinet foundry goods blank；Water-cooling motor cabinet hardness and intensity are strengthened, and the precoated sand that water channel core is used carries out the defeated and dispersed process of high temperature, discharges it housing；Fixation rates is to adopt T6 to process technique, and solid solution temperature retention time is 10 hours, and timeliness temperature retention time is 7 hours.
5th step, after fixation rates completes, adopts argon arc welding that casting technique hole is carried out welded seal in casting technique hole required in water-cooling motor cabinet foundry goods manufacturing process；
6th step, to clearing up outside water-cooling motor cabinet, precision optical machinery processing and inspection obtain integral type water-cooling motor cabinet finished product.
After adopting this technique, motor casing yield rate controls more than 90%, motor casing water channel inner wall smooth is smooth, air-leakage test through 0.5MPa, 10 minutes, leak rate is less than 5%, motor casing perfect heat-dissipating, yield rate height, beautiful appearance, combination property are stable, meet the requirement of new-energy automobile drive motor.
Embodiment 2:
A kind of energy automobile integral type water-cooling motor cabinet of 100KW, design 8 circle spiral channel, water channel sectional dimension is wide 20mm thickness 7mm, its assemble after for the pure electric sedan of F-Zero >=80KM/H, it is desirable to it is safe efficient to guarantee to, good toughness, the combination property such as lightweight that motor casing has good quick heat radiating, intensity.Adopted main technique be:
The first step, adopts precoated sand core-making method to make spiral channel core, and is coated with alcohol radical graphite paint at spiral channel core outer layer；Wherein, precoated sand core-making method is to adopt 40-70 order thermosetting phenolic resin precoated sand, gas forming amount≤10ml/g, room temperature bending strength >=4MPa, hot bending strength >=4MPa；Sand adopts high-temperature roasting sand.
Second step, is coated with alcohol radical graphite paint by the core of water-cooling motor cabinet mould, is then fixed in mould by the spiral channel core scribbling alcohol radical graphite paint；
3rd step, is that A356 aluminum liquid carries out low-pressure casting acquisition water-cooling motor cabinet foundry goods blank by low-pressure casting process in mould by the material that the fusing of natural gas aluminium melting furnace obtains；
4th step, carries out fixation rates to water-cooling motor cabinet foundry goods blank；Water-cooling motor cabinet hardness and intensity are strengthened, and the precoated sand that water channel core is used carries out the defeated and dispersed process of high temperature, discharges it housing；Fixation rates is to adopt T6 to process technique, and solid solution temperature retention time is 9 hours, and timeliness temperature retention time is 6 hours.
5th step, after fixation rates completes, adopts argon arc welding that casting technique hole is carried out welded seal in casting technique hole required in water-cooling motor cabinet foundry goods manufacturing process；
6th step, to clearing up outside water-cooling motor cabinet, precision optical machinery processing and inspection obtain integral type water-cooling motor cabinet finished product.
After adopting this technique, motor casing yield rate controls more than 91%, motor casing water channel inner wall smooth is smooth, air-leakage test through 0.5MPa, 10 minutes, leak rate is less than 6%, motor casing perfect heat-dissipating, yield rate height, beautiful appearance, combination property are stable, meet the requirement of new-energy automobile pure electric sedan drive motor.
Embodiment 3:
A kind of energy automobile integral type water-cooling motor cabinet of 150KW, design 7 circle spiral channel, water channel sectional dimension is wide 20mm thickness 15mm, its assemble after for the pure electric coach of F-Zero >=80KM/H, it is desirable to it is safe efficient to guarantee to, good toughness, the combination property such as lightweight that motor casing has good quick heat radiating, intensity.Adopted main technique be:
The first step, adopts precoated sand core-making method to make spiral channel core, and is coated with alcohol radical graphite paint at spiral channel core outer layer；Wherein, precoated sand core-making method is to adopt 40-70 order thermosetting phenolic resin precoated sand, gas forming amount≤10ml/g, room temperature bending strength >=4MPa, hot bending strength >=4MPa；Sand adopts high-temperature roasting sand.
Second step, is coated with alcohol radical graphite paint by the core of water-cooling motor cabinet mould, is then fixed in mould by the spiral channel core scribbling alcohol radical graphite paint；
3rd step, is that A356 aluminum liquid carries out low-pressure casting acquisition water-cooling motor cabinet foundry goods blank by low-pressure casting process in mould by the material that the fusing of natural gas aluminium melting furnace obtains；
4th step, carries out fixation rates to water-cooling motor cabinet foundry goods blank；Water-cooling motor cabinet hardness and intensity are strengthened, and the precoated sand that water channel core is used carries out the defeated and dispersed process of high temperature, discharges it housing；Fixation rates is to adopt T6 to process technique, and solid solution temperature retention time is 9 hours, and timeliness temperature retention time is 6 hours.
5th step, after fixation rates completes, adopts argon arc welding that casting technique hole is carried out welded seal in casting technique hole required in water-cooling motor cabinet foundry goods manufacturing process；
6th step, to clearing up outside water-cooling motor cabinet, precision optical machinery processing and inspection obtain integral type water-cooling motor cabinet finished product.
After adopting this technique, motor casing yield rate controls more than 92%, motor casing water channel inner wall smooth is smooth, air-leakage test through 0.5MPa, 10 minutes, leak rate is less than 4%, motor casing perfect heat-dissipating, yield rate height, beautiful appearance, combination property are stable, meet the requirement of new-energy automobile pure electric sedan drive motor.
Claims (6)
1. the production technology of a new-energy automobile integral type water-cooling motor cabinet, it is characterised in that comprise the following steps:
The first step, adopts precoated sand core-making method to make water channel core, and is coated with refractory material at water channel core outer layer；
Second step, is coated with refractory material by the core of water-cooling motor cabinet mould, then will scribble refractory material water channel core and be fixed in mould；
3rd step, carries out low-pressure casting acquisition water-cooling motor cabinet foundry goods blank by low-pressure casting process by the aluminum liquid of gas furnace melting in mould；
4th step, carries out fixation rates to water-cooling motor cabinet foundry goods blank；
5th step, after fixation rates completes, carries out welded seal to casting technique hole required in water-cooling motor cabinet foundry goods manufacturing process；
6th step, to clearing up outside water-cooling motor cabinet, precision optical machinery processing and inspection obtain integral type water-cooling motor cabinet finished product.
2. the production technology of new-energy automobile integral type water-cooling motor cabinet according to claim 1, it is characterized in that: described precoated sand core-making method is to adopt 40-70 order thermosetting phenolic resin precoated sand, gas forming amount≤10ml/g, room temperature bending strength >=4MPa, hot bending strength >=4MPa, sand adopts high-temperature roasting sand.
3. the production technology of new-energy automobile integral type water-cooling motor cabinet according to claim 1, it is characterised in that: described refractory material adopts alcohol radical graphite paint.
4. the production technology of new-energy automobile integral type water-cooling motor cabinet according to claim 1, it is characterised in that: described aluminum liquid adopts the fusing of natural gas aluminium melting furnace to obtain, and material is A356.
5. the production technology of new-energy automobile integral type water-cooling motor cabinet according to claim 1, it is characterised in that: described fixation rates adopts T6 to process technique, and solid solution temperature retention time is 8-10 hour, and timeliness temperature retention time is 5-7 hour.
6. the production technology of new-energy automobile integral type water-cooling motor cabinet according to claim 1, it is characterised in that: described welding adopts argon arc welding that casting technique hole is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180277.6A CN105798262B (en) | 2016-03-26 | 2016-03-26 | The production technology of new-energy automobile integral type water-cooling motor cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180277.6A CN105798262B (en) | 2016-03-26 | 2016-03-26 | The production technology of new-energy automobile integral type water-cooling motor cabinet |
Publications (2)
| Publication Number | Publication Date |
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| CN105798262A true CN105798262A (en) | 2016-07-27 |
| CN105798262B CN105798262B (en) | 2017-11-03 |
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| CN201610180277.6A Active CN105798262B (en) | 2016-03-26 | 2016-03-26 | The production technology of new-energy automobile integral type water-cooling motor cabinet |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694841A (en) * | 2016-12-30 | 2017-05-24 | 广州汽车集团股份有限公司 | Manufacturing method of battery package shell of new energy automobile and corresponding battery package shell |
| CN107685143A (en) * | 2016-08-04 | 2018-02-13 | 佛山市南海力格模具五金有限公司 | A kind of casting method and mould of new-energy automobile water cooling motor housing |
| CN107716900A (en) * | 2017-11-29 | 2018-02-23 | 广东肇庆动力金属股份有限公司 | A kind of motor casing low pressure casting is layered water-cooling process |
| CN108520931A (en) * | 2018-06-11 | 2018-09-11 | 浙江乾坤新能源科技有限公司 | battery box |
| CN108971906A (en) * | 2018-08-30 | 2018-12-11 | 天成车料（深圳）有限公司 | A kind of production method and motor cabinet of electric bicycle motor seat |
| CN109067063A (en) * | 2018-08-27 | 2018-12-21 | 湖州正豪电器科技有限公司 | A kind of high heat dispersion motor case and its production technology |
| CN109622885A (en) * | 2019-01-18 | 2019-04-16 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy condenser boiler piece |
| CN109773160A (en) * | 2019-03-29 | 2019-05-21 | 山东鸿源新材料有限公司 | The low-pressure casting process of aluminum alloy impeller |
| CN110180998A (en) * | 2019-06-24 | 2019-08-30 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy air inlet pipe |
| CN112296311A (en) * | 2020-10-30 | 2021-02-02 | 山东鸿源新材料有限公司 | Manufacturing process of rare earth aluminum alloy motor shell |
| CN112387931A (en) * | 2020-10-30 | 2021-02-23 | 山东鸿源新材料有限公司 | Gravity casting mold of new energy water-cooled motor shell end cover and casting process thereof |
| CN113437846A (en) * | 2021-06-08 | 2021-09-24 | 无锡胜鼎智能科技有限公司 | Manufacturing method of new energy vehicle washing motor shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107685143A (en) * | 2016-08-04 | 2018-02-13 | 佛山市南海力格模具五金有限公司 | A kind of casting method and mould of new-energy automobile water cooling motor housing |
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| CN107716900A (en) * | 2017-11-29 | 2018-02-23 | 广东肇庆动力金属股份有限公司 | A kind of motor casing low pressure casting is layered water-cooling process |
| CN108520931A (en) * | 2018-06-11 | 2018-09-11 | 浙江乾坤新能源科技有限公司 | battery box |
| CN109067063A (en) * | 2018-08-27 | 2018-12-21 | 湖州正豪电器科技有限公司 | A kind of high heat dispersion motor case and its production technology |
| CN108971906A (en) * | 2018-08-30 | 2018-12-11 | 天成车料（深圳）有限公司 | A kind of production method and motor cabinet of electric bicycle motor seat |
| CN109622885A (en) * | 2019-01-18 | 2019-04-16 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy condenser boiler piece |
| CN109773160A (en) * | 2019-03-29 | 2019-05-21 | 山东鸿源新材料有限公司 | The low-pressure casting process of aluminum alloy impeller |
| CN110180998A (en) * | 2019-06-24 | 2019-08-30 | 山东鸿源新材料有限公司 | The production technology of aluminium alloy air inlet pipe |
| CN112296311A (en) * | 2020-10-30 | 2021-02-02 | 山东鸿源新材料有限公司 | Manufacturing process of rare earth aluminum alloy motor shell |
| CN112387931A (en) * | 2020-10-30 | 2021-02-23 | 山东鸿源新材料有限公司 | Gravity casting mold of new energy water-cooled motor shell end cover and casting process thereof |
| CN113437846A (en) * | 2021-06-08 | 2021-09-24 | 无锡胜鼎智能科技有限公司 | Manufacturing method of new energy vehicle washing motor shell |
| CN113437846B (en) * | 2021-06-08 | 2023-12-05 | 无锡胜鼎智能科技有限公司 | Manufacturing method of new energy vehicle washing motor shell |
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| Publication number | Publication date |
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| CN105798262B (en) | 2017-11-03 |
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Denomination of invention: Production process of integrated water-cooled motor casing for new energy vehicles Granted publication date: 20171103 Pledgee: Bank of Qingdao Co.,Ltd. Zibo Branch Pledgor: SHANDONG HONGYUAN NEW MATERIALS CO.,LTD. Registration number: Y2024980006177 |