CN113787303A - Machining process for improving wear resistance of motor rotor shaft - Google Patents
Machining process for improving wear resistance of motor rotor shaft Download PDFInfo
- Publication number
- CN113787303A CN113787303A CN202110965755.5A CN202110965755A CN113787303A CN 113787303 A CN113787303 A CN 113787303A CN 202110965755 A CN202110965755 A CN 202110965755A CN 113787303 A CN113787303 A CN 113787303A
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- China
- Prior art keywords
- rotor shaft
- raw material
- cobalt
- based alloy
- resistant block
- Prior art date
- 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.)
- Pending
Links
- 238000003754 machining Methods 0.000 title description 2
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims description 45
- 229910000531 Co alloy Inorganic materials 0.000 claims description 32
- 238000003466 welding Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to the technical field of motor rotor shafts, in particular to a processing technology for improving the wear resistance of a motor rotor shaft, which comprises the following steps: step A to step I; the motor rotor shaft manufactured by the invention has good wear resistance, and the service life of the motor is prolonged.
Description
Technical Field
The invention relates to the technical field of motor rotor shafts, in particular to a processing technology for improving the wear resistance of a motor rotor shaft.
Background
The rotor shaft is the core part in the motor, it is used for exporting motor power, prior art's motor rotor shaft mostly adopts high carbon steel to make, in the use, because the wearing and tearing between the surface of rotor shaft and the bearing frame are more serious, when rotor shaft surface wearing and tearing reached the certain degree, the focus of rotor shaft is not stable enough, lead to motor rotor shaft to shake at the pivoted in-process easily, seriously influence the power transmission of rotor shaft, can scrap whole rotor when serious, the life of motor has been shortened greatly.
Disclosure of Invention
The invention aims to provide a processing technology for improving the wear resistance of a motor rotor shaft, which has good wear resistance and prolongs the service life of a motor, aiming at the defects.
In order to achieve the purpose, the invention adopts the following technical scheme:
a processing technique for improving the wear resistance of a motor rotor shaft,
step A: preparing a cobalt-based alloy wear-resistant block raw material, wherein the wear-resistant block raw material comprises the following components: chromium: 28-32%, tungsten: 3.5-5.5%, molybdenum: 1.5%, nickel: 3%, manganese: 2%, iron: 3% and carbon: 0.9-1.4%, cobalt: the balance;
and B: smelting in a vacuum smelting furnace according to the element proportion in the step A, and casting into a plurality of cobalt-based alloy wear-resistant block cast ingots with sector cross sections;
and C: b, deburring and deburring the cast ingot of the cobalt-based alloy wear-resistant block in the step B to form the cobalt-based alloy wear-resistant block;
step D: preparing a high-carbon steel raw material, cutting the high-carbon steel raw material into sections, roughly turning two end faces and the outer surface to obtain a rotor shaft raw material;
step E: d, milling a plurality of V-shaped mounting grooves for accommodating the cobalt-based alloy wear-resistant blocks in the step C on the outer side wall of the rotor shaft raw material in the step D;
step F: e, preheating the rotor shaft raw material in the step E;
step G: welding the cobalt-based alloy wear-resistant block in the step E into the V-shaped mounting groove of the preheated rotor shaft raw material in the step F, splicing the arc surface of the cobalt-based alloy wear-resistant block with the outer side wall of the rotor shaft raw material, and welding the cobalt-based alloy wear-resistant block into the rotor shaft;
step H: and G, placing the rotor shaft welded in the step G into a furnace for stress relief heat treatment.
Step I: and E, chamfering the end part of the rotor shaft subjected to the heat treatment in the step H, and polishing the outer side wall of the raw material of the rotor shaft and the arc surface of the cobalt-based alloy wear-resistant block to obtain the original part of the motor rotor shaft.
Further, the melting temperature of the vacuum melting furnace in the step B is 1000-1200 ℃.
And furthermore, the V-shaped mounting groove in the step E is arranged on the outer side wall of the rotor shaft raw material connecting bearing.
And further, the preheating temperature of the rotor shaft raw material in the step F is 300-500 ℃.
And E, at least four V-shaped mounting grooves are formed in the rotor shaft raw material in the step E, and the at least four V-shaped mounting grooves are arranged at equal angles by taking the axis of the rotor shaft raw material as the center.
Further, the temperature of the stress-relieving heat treatment in step H was 650 ℃.
The invention has the beneficial effects that:
according to the technical scheme, the invention has the beneficial effects that: the cobalt-based alloy wear-resistant block is welded in the raw material of the rotor shaft, so that the manufactured rotor shaft of the motor has good wear resistance, and the service life of the motor is prolonged.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of a rotor shaft of an electric machine made in accordance with the present invention;
reference numerals: a motor rotor shaft 1; a V-shaped mounting groove 11; and a cobalt-based alloy wear-resistant block 2.
Detailed Description
The technical scheme of the processing technology of the contact piece of the high-voltage switch related to the invention is further described in detail with reference to the embodiment.
The first embodiment is as follows:
referring to fig. 1, the embodiment provides a processing technology for improving the wear resistance of a motor rotor shaft, and the step a: preparing a cobalt-based alloy wear-resistant block raw material, wherein the wear-resistant block raw material comprises the following components: chromium: 28-32%, tungsten: 3.5-5.5%, molybdenum: 1.5%, nickel: 3%, manganese: 2%, iron: 3% and carbon: 0.9-1.4%, cobalt: the balance;
and B: smelting in a vacuum smelting furnace according to the element proportion in the step A, and casting into a plurality of cobalt-based alloy wear-resistant block cast ingots with sector cross sections;
and C: b, deburring and deburring the cast ingot of the cobalt-based alloy wear-resistant block in the step B to form a cobalt-based alloy wear-resistant block 2;
step D: preparing a high-carbon steel raw material, cutting the high-carbon steel raw material into sections, roughly turning two end faces and the outer surface to obtain a rotor shaft raw material;
step E: milling a plurality of V-shaped mounting grooves 11 for accommodating the cobalt-based alloy wear-resistant blocks 2 in the step C on the outer side wall of the rotor shaft raw material in the step D;
step F: e, preheating the rotor shaft raw material in the step E;
step G: welding the cobalt-based alloy wear-resistant block 2 in the step E into the V-shaped mounting groove 11 of the rotor shaft raw material preheated in the step F, splicing the arc surface of the cobalt-based alloy wear-resistant block 2 with the outer side wall of the rotor shaft raw material, and welding to form a rotor shaft;
step H: and G, placing the rotor shaft welded in the step G into a furnace for stress relief heat treatment.
Step I: and E, chamfering the end part of the rotor shaft subjected to the heat treatment in the step H, and polishing the outer side wall of the raw material of the rotor shaft and the arc surface of the cobalt-based alloy wear-resistant block 2 to obtain the original piece of the motor rotor shaft 1.
According to the invention, the cobalt-based alloy wear-resistant block 2 with high strength and good wear resistance can be obtained by smelting chromium, tungsten, molybdenum, nickel, manganese, iron, carbon and cobalt, and the cobalt-based alloy wear-resistant block 2 is welded in the raw material of the rotor shaft, so that the wear resistance of the contact surface of the motor rotor shaft 1 and the bearing is better, and the service life of the motor is prolonged.
Referring to fig. 1, the melting temperature of the vacuum melting furnace in step B is 1000-; in the embodiment, the cobalt-based alloy wear-resistant block 2 has good wear resistance through the melting temperature of the vacuum melting furnace of 1000-1200 ℃.
Referring to fig. 1, the V-shaped mounting groove 11 in step E is formed on the outer sidewall of the rotor shaft raw material connection bearing; in the embodiment, the outer side wall of the raw material connection bearing of the rotor shaft is provided with the plurality of V-shaped mounting grooves 11 for accommodating the cobalt-based alloy wear-resistant blocks 2, so that the wear resistance of the contact surface of the rotor shaft 1 and the bearing of the motor is better, and the service life of the motor is prolonged.
Referring to fig. 1, in step F, the preheating temperature of the rotor shaft raw material is 300-500 ℃; in the embodiment, the rotor shaft raw material cannot crack in the welding process through the preheating temperature of 300-500 ℃, and the welding effect is better.
Referring to fig. 1, at least four V-shaped mounting grooves 11 are arranged in step E, and the at least four V-shaped mounting grooves 11 are arranged at equal angles around the axis of the rotor shaft raw material; in the embodiment, at least four cobalt-based alloy wear-resistant blocks 2 are arranged in at least four V-shaped mounting grooves 11 which are equiangularly arranged by taking the axis of the rotor shaft raw material as the center, so that the wear resistance of the contact surface of the motor rotor shaft 1 and the bearing is better, and the service life of the motor is prolonged.
Referring to FIG. 1, the temperature of the stress-relieving heat treatment in step H is 650 deg.C; in this embodiment, the motor rotor axle after welding keeps warm through 650 ℃ of high temperature and slowly cools, can effectively eliminate stress, and the welding effect is better.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (6)
1. The processing technology for improving the abrasion resistance of the motor rotor shaft is characterized in that:
step A: preparing a cobalt-based alloy wear-resistant block raw material, wherein the wear-resistant block raw material comprises the following components: chromium: 28-32%, tungsten: 3.5-5.5%, molybdenum: 1.5%, nickel: 3%, manganese: 2%, iron: 3% and carbon: 0.9-1.4%, cobalt: the balance;
and B: smelting in a vacuum smelting furnace according to the element proportion in the step A, and casting into a plurality of cobalt-based alloy wear-resistant block cast ingots with sector cross sections;
and C: b, deburring and deburring are carried out on the cast ingot of the cobalt-based alloy wear-resistant block in the step B to form a cobalt-based alloy wear-resistant block (2);
step D: preparing a high-carbon steel raw material, cutting the high-carbon steel raw material into sections, roughly turning two end faces and the outer surface to obtain a rotor shaft raw material;
step E: milling a plurality of V-shaped mounting grooves (11) for accommodating the cobalt-based alloy wear-resistant blocks (2) in the step C on the outer side wall of the rotor shaft raw material in the step D;
step F: e, preheating the rotor shaft raw material in the step E;
step G: welding the cobalt-based alloy wear-resistant block (2) in the step E into the V-shaped mounting groove (11) of the rotor shaft raw material preheated in the step F, splicing the arc surface of the cobalt-based alloy wear-resistant block (2) with the outer side wall of the rotor shaft raw material, and welding into a rotor shaft;
step H: and G, placing the rotor shaft welded in the step G into a furnace for stress relief heat treatment.
Step I: and E, chamfering the end part of the rotor shaft subjected to the heat treatment in the step H, and polishing the outer side wall of the raw material of the rotor shaft and the arc surface of the cobalt-based alloy wear-resistant block (2) to obtain the original piece of the motor rotor shaft (1).
2. The processing technology for improving the wear resistance of the motor rotor shaft according to claim 1, characterized in that: the melting temperature of the vacuum melting furnace in the step B is 1000-.
3. The processing technology for improving the wear resistance of the motor rotor shaft according to claim 1, characterized in that: and E, arranging the V-shaped mounting groove (11) on the outer side wall of the rotor shaft raw material connecting bearing.
4. The processing technology for improving the wear resistance of the motor rotor shaft according to claim 1, characterized in that: and F, preheating the rotor shaft raw material at 300-500 ℃.
5. The processing technology for improving the wear resistance of the motor rotor shaft according to claim 1, characterized in that: and E, at least four V-shaped mounting grooves (11) are arranged, and the at least four V-shaped mounting grooves (11) are arranged at equal angles by taking the axis of the rotor shaft raw material as the center.
6. The processing technology for improving the wear resistance of the motor rotor shaft according to claim 1, characterized in that: the temperature of the stress-relieving heat treatment in step H was 650 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965755.5A CN113787303A (en) | 2021-08-23 | 2021-08-23 | Machining process for improving wear resistance of motor rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110965755.5A CN113787303A (en) | 2021-08-23 | 2021-08-23 | Machining process for improving wear resistance of motor rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113787303A true CN113787303A (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110965755.5A Pending CN113787303A (en) | 2021-08-23 | 2021-08-23 | Machining process for improving wear resistance of motor rotor shaft |
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| Country | Link |
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| CN (1) | CN113787303A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074885A1 (en) * | 1998-11-06 | 2002-06-20 | Decristofaro Nicholas John | Bulk amorphous metal magnetic components for electric motors |
| CN1417360A (en) * | 2001-11-07 | 2003-05-14 | 中国科学院金属研究所 | Anticorrosive and antiwear cast cobalt-base alloy |
| JP2008092705A (en) * | 2006-10-03 | 2008-04-17 | Toyota Motor Corp | Inner rotor type motor or outer rotor type motor, and its manufacturing method |
| CN104549651A (en) * | 2014-12-29 | 2015-04-29 | 北票市瑞鑫耐磨合金铸造有限公司 | Electroslag smelting casting combined welding type dual-metal wear-resistant hammer head and manufacturing method thereof |
| CN107842369A (en) * | 2017-12-11 | 2018-03-27 | 安徽天重工股份有限公司 | A kind of Hob cutter ring of shield machine and its manufacture method with built-up welding cobalt-base alloys |
-
2021
- 2021-08-23 CN CN202110965755.5A patent/CN113787303A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074885A1 (en) * | 1998-11-06 | 2002-06-20 | Decristofaro Nicholas John | Bulk amorphous metal magnetic components for electric motors |
| CN1417360A (en) * | 2001-11-07 | 2003-05-14 | 中国科学院金属研究所 | Anticorrosive and antiwear cast cobalt-base alloy |
| JP2008092705A (en) * | 2006-10-03 | 2008-04-17 | Toyota Motor Corp | Inner rotor type motor or outer rotor type motor, and its manufacturing method |
| CN104549651A (en) * | 2014-12-29 | 2015-04-29 | 北票市瑞鑫耐磨合金铸造有限公司 | Electroslag smelting casting combined welding type dual-metal wear-resistant hammer head and manufacturing method thereof |
| CN107842369A (en) * | 2017-12-11 | 2018-03-27 | 安徽天重工股份有限公司 | A kind of Hob cutter ring of shield machine and its manufacture method with built-up welding cobalt-base alloys |
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Application publication date: 20211214 |
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| RJ01 | Rejection of invention patent application after publication |