CN201191783Y - Thin wall guard ring for large high-speed motor - Google Patents
Thin wall guard ring for large high-speed motor Download PDFInfo
- Publication number
- CN201191783Y CN201191783Y CNU2008200555306U CN200820055530U CN201191783Y CN 201191783 Y CN201191783 Y CN 201191783Y CN U2008200555306 U CNU2008200555306 U CN U2008200555306U CN 200820055530 U CN200820055530 U CN 200820055530U CN 201191783 Y CN201191783 Y CN 201191783Y
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- China
- Prior art keywords
- thin
- speed motor
- retaining ring
- large scale
- wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a retaining ring which is used in a large scale high-speed motor, in particular to a thin-wall retaining ring which is used in the large scale high-speed motor. The thin-wall retaining ring which is used in the large scale high-speed motor is a hollow cylindrical shape and is characterized in that the thin-wall retaining ring is made of 40Mn18Cr4 steel. Since the technical solving scheme is adopted, the problems that the price of raw material steel ingots which are used to manufacture the retaining ring which is used in the large scale high-speed motor is expensive and resources are strained, the production cost of the retaining ring which is used in the large scale high-speed motor is prominently lowered, and nickel resources of our country are effectively saved.
Description
Technical field
The utility model relates to the large high-speed machine retaining ring, particularly a kind of thin-wall guard rings for large-sized high-speed motors.
Background technology
The large diameter thin wall retaining ring is the vital part of high-speed electric expreess locomotive.Thin-wall guard rings for large-sized high-speed motors rise protection high speed rotor of motor end sliver, conducting end-ring when running up because huge centrifugal action and unlikely throwing away.When rotor high speed rotating, shutdown and startup; bear centrifugal force, bending stress, the erection stress of alternation effect; stressed heavy complexity; must prevent also that simultaneously the end from influencing electric efficiency because of leakage field causes loss, thereby require retaining ring to have the residual stress of high strength, high tenacity, low magnetic, minimum.Possess above condition have only austenitic steel deformation to strengthen after could guarantee that Japanese TMEIC selects 0Cr18Ni9 for use, manufacture method is: type-roughing-bend circle-soldering opening-solution heat treatment-cold bulging-performance test is rolled in cast steel steel ingot-cogging.The steel ingot of this material costs an arm and a leg, and China belongs to poor nickel country, this resource anxiety.The manufacture method of above-mentioned material is complicated, and the method link is many, and needs with supporting process equipment, thereby manufacturing cost is very high.
Summary of the invention
The purpose of this utility model is that the raw material steel ingot that solves above-mentioned production thin-wall guard rings for large-sized high-speed motors costs an arm and a leg, the problem of resource anxiety, and a kind of thin-wall guard rings for large-sized high-speed motors of producing with common iron is provided.
Realize that the purpose of this utility model technical scheme is: a kind of thin-wall guard rings for large-sized high-speed motors, the cylinder bodily form for hollow is characterized in that, makes with the 40Mn18Cr4 steel to form.
The tubular endoporus of above-mentioned hollow is big, wall thin, and interior external diameter difference is at 200-50 centimetre.
Owing to adopted above-mentioned technical solution, the raw material steel ingot that has solved the production thin-wall guard rings for large-sized high-speed motors fully costs an arm and a leg, the problem of resource anxiety, reduce the thin-wall guard rings for large-sized high-speed motors production cost significantly, saved China's ground nickel resources effectively.
Description of drawings
Fig. 1 is the structural representation of the utility model thin-wall guard rings for large-sized high-speed motors.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments:
With reference to figure 1, a kind of thin-wall guard rings for large-sized high-speed motors is the cylinder bodily form of hollow, and it is made with the 40Mn18Cr4 steel and forms.
The tubular endoporus of above-mentioned hollow is big, wall thin, and interior external diameter difference is at 200-50 centimetre.
1 is external diameter among the figure, and 2 is internal diameter, and 3 is wall thickness.
The processing method of above-mentioned thin-walled retaining ring is the following step:
1, refining steel billet: the eight rib steel ingots that adopt the refining of electroslag remelting ladle, vacuum casting.
2, forge hot base:
Because to thermo-responsive excessively, malleability is relatively poor, ftractures easily during forge hot when expansion of the thick column of ingot casting crystal grain crystal zone and heating, material plasticity significantly descends in 660-800 ℃ of scope, and forging temperature is typically chosen in 850-1100 ℃.
Should close surface defect with forging with light reduction (30-50mm) to rib before the steel ingot large deformation is forged, improve the plasticity and the intensity of top layer metal, crack when preventing large deformation; Mn-Cr type austenitic steel is essential coarse-grained steel, segregation prosperity in the steel ingot, and coarse-grain is serious, and jumping-up pulling several times fully smashes interior tissue, also will be out of shape evenly; Blank upper and lower end face metal temperature reduces very fast during jumping-up, after bigger distortion, the metal sclerosis can not get recovering, as the horse back punching, because end face plasticity is low, be in tensile stress state again, the aperture easily cracks, so jumping-up and punching are carried out at two fire respectively, plug pulling, saddle support reaming are equally so carried out at different fire, adopt circular arc anvil up and down during pulling, assurance has bigger contact-making surface, is unlikely to stress and concentrates cracking, and wall thickness is stressed evenly during reaming, find crackle cleaning in time in the whole hot forging process, in case crackle enlarges.
3. solution heat treatment and cold deformation:
Owing to have carbide to separate out to make plasticity to reduce, and the decline of carbon content in the solid solution has also reduced strengthening effect behind the hot-forging forming; Reenter stove and be heated to 950-1100 ℃ and insulation, guarantee that the abundant solid solution of carbide obtains homogeneous austenite structure, water-cooled water outlet when not seeing that the quick water-cooled of water outlet is to 610-650 ℃ when red fast again, best water-cooled temperature fast is 630 ℃.This also is under the recrystallization temperature, has also avoided the brittleness temperature (660-800 ℃, carbide is separated out, and reduces plasticity) of this material simultaneously, deformation strengthening.Higher as final forging temperature, can put into water immediately after the forging and cool off; Deflection is 10-15%.
4. roughing:
Ultrasonic detection after the peeling, qualified back rebreaker tool performance test ring, test mechanical performance, magnetic property, grain size.
Select for use common 40Mn18Cr4 steel can produce with above-mentioned processing method and select the close thin-walled retaining ring of 0Cr18Ni9 performance for use with Japanese TMEIC.
The TMEIC series large diameter thin wall retaining ring figure number 8.087.1219 that Japan TMEIC selects for use 0Cr18Ni9 to make is of a size of 1050/990*220.
The utility model can process the thin-walled retaining ring of different size and weight as required.See the following form:
Table: size and weight
| Life size | Weight KG | Existing size | Weight KG | |
| 8.217.6227 | 1116/790*213 | 817 | 1116/956*213 | 435 |
| 8.217.7032 | 987/700*178 | 531 | 987/827*178 | 318 |
The big more and effective thickness of endoporus of the present utility model diminishes, and corresponding thermal deformation cold deformation amount is big more, and is easy to crack more in the manufacturing, and technological parameter requires high more, and technical process control is tight more.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (2)
1, a kind of thin-wall guard rings for large-sized high-speed motors, the cylinder bodily form for hollow is characterized in that, makes with the 40Mn18Cr4 steel to form.
2, thin-wall guard rings for large-sized high-speed motors as claimed in claim 1 is characterized in that, the tubular endoporus of described hollow is big, wall thin, and interior external diameter difference is at 200-50 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200555306U CN201191783Y (en) | 2008-02-18 | 2008-02-18 | Thin wall guard ring for large high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200555306U CN201191783Y (en) | 2008-02-18 | 2008-02-18 | Thin wall guard ring for large high-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201191783Y true CN201191783Y (en) | 2009-02-04 |
Family
ID=40335942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200555306U Expired - Lifetime CN201191783Y (en) | 2008-02-18 | 2008-02-18 | Thin wall guard ring for large high-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201191783Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111562A (en) * | 2013-03-15 | 2013-05-22 | 中航卓越锻造（无锡）有限公司 | Manufacturing method of thick-wall high-drum annular forging |
| CN107800220A (en) * | 2017-12-13 | 2018-03-13 | 中车株洲电机有限公司 | A kind of electric vehicle and its traction electric machine |
| CN110605352A (en) * | 2019-11-04 | 2019-12-24 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of lower spring end plate of annular forging |
-
2008
- 2008-02-18 CN CNU2008200555306U patent/CN201191783Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111562A (en) * | 2013-03-15 | 2013-05-22 | 中航卓越锻造（无锡）有限公司 | Manufacturing method of thick-wall high-drum annular forging |
| CN107800220A (en) * | 2017-12-13 | 2018-03-13 | 中车株洲电机有限公司 | A kind of electric vehicle and its traction electric machine |
| CN107800220B (en) * | 2017-12-13 | 2023-11-21 | 中车株洲电机有限公司 | Electric wheel vehicle and traction motor thereof |
| CN110605352A (en) * | 2019-11-04 | 2019-12-24 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of lower spring end plate of annular forging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090204 |
|
| CX01 | Expiry of patent term |