CN111716156B - Machining method of sealing surface of moving ring - Google Patents
Machining method of sealing surface of moving ring Download PDFInfo
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- CN111716156B CN111716156B CN202010615073.7A CN202010615073A CN111716156B CN 111716156 B CN111716156 B CN 111716156B CN 202010615073 A CN202010615073 A CN 202010615073A CN 111716156 B CN111716156 B CN 111716156B
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- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003754 machining Methods 0.000 title claims description 9
- 238000000227 grinding Methods 0.000 claims abstract description 157
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 239000011651 chromium Substances 0.000 claims abstract description 13
- 238000009966 trimming Methods 0.000 claims abstract description 9
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 239000010431 corundum Substances 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a method for processing a sealing surface of a moving ring, which comprises the following steps of 1, uniformly processing a chromium layer sealing surface of the moving ring, and then cleaning after coarse grinding; step 2, placing a dressing ring on the grinding disc, placing the movable ring in the ceramic dressing ring, enabling the large end face of the movable ring to be in contact with the upper surface of the grinding disc, compounding grinding agents into the grinding disc, placing a balance weight on the movable ring, and roughly grinding the large end face of the movable ring; step 3, putting the moving ring into the ceramic dressing ring again, adding a composite grinding agent into the grinding disc, and carrying out fine grinding on the large end face of the moving ring after placing a balance weight on the moving ring; and 4, putting the movable ring into the ceramic trimming ring again, enabling the large end face of the movable ring to be in contact with the upper surface of the grinding disc, adding a composite grinding agent into the grinding disc, placing a balance weight on the movable ring, carrying out ultra-precision grinding on the large end face of the movable ring, taking out the movable ring after the ultra-precision grinding is finished, and cleaning. The processing quality of the chromium-plated sealing surface is ensured, the efficiency is improved, and the problems of surface edge collapse, scratches, pit defects and low processing efficiency are solved.
Description
Technical Field
The invention relates to the technical field of manufacturing and processing of sealing parts, in particular to a method for processing a sealing surface of a moving ring.
Background
The gas turbine for ship is an important power device on modern ship, and is characterized by that the air is pressurized by compressor, then fed into combustion chamber, mixed with fuel oil and combusted in the combustion chamber to produce high-temp. high-pressure gas, then fed into turbine to impact blade on the turbine so as to make the turbine rotate at high speed to drive propulsion machine to work. The gas turbine has the characteristics of small volume, high power and high efficiency, and can be used as the power of ships.
The moving ring is an important sealing part on a high-power gas turbine, and the end face of the moving ring and the graphite sealing ring are used for air sealing and oil sealing together in a high-speed high-temperature state. The manufacturing quality of the moving ring directly influences the sealing effect of the moving ring and the graphite sealing ring and the service life of the moving ring. In order to ensure the air tightness and the wear resistance of the end face of the moving ring and the graphite sealing ring, the flatness requirement of the working face of the moving ring is 0.001mm, the surface roughness is Ra0.04, and the moving ring is an ultra-precise sealing face. The sealing surface of the moving ring needs to be subjected to chromium plating treatment, and the size of the moving ring with the maximum specification is phi 260 multiplied by 25 generally.
However, the sealing surface of the prior moving ring is difficult to process into an ultra-precise sealing surface after being chromeplated, the larger the size is, the more difficult the processing is, the chromium layer is difficult to process, the structure is easy to deform due to more influencing factors, and the required precision of the planeness is high, so that the requirement cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for processing a sealing surface of a moving ring, which meets the flatness requirement of a chromium layer sealing surface of the moving ring, ensures the processing quality and improves the efficiency.
The invention is realized by the following technical scheme:
a method for processing a sealing surface of a moving ring comprises the following steps,
and 4, putting the moving ring obtained in the step 3 into the ceramic trimming ring again, enabling the large end face of the moving ring to be in contact with the upper surface of the grinding disc, adding 3-6 microns of composite grinding agent into the grinding disc, placing 1.5-2 KG of balance weight on the moving ring, enabling the shape of the balance weight to be matched with the shape of the moving ring, carrying out ultra-precision grinding on the large end face of the moving ring, taking out the moving ring after the ultra-precision grinding is finished, cleaning, and finishing the processing of the sealing surface of the moving ring.
Preferably, in the step 1, the inner and outer flashes of the chromium layer of the moving ring are polished by an air gun, so that the stress is uniform when the sealing surface of the chromium layer is processed.
Preferably, in the step 1, the planeness of the large end face of the movable ring after rough grinding reaches 0.015mm, and the roughness is Ra0.4.
Further, the movable ring is roughly ground in the following way,
the large end face of the movable ring is roughly ground by adopting a circular flat grinding and a white corundum grinding wheel, the rotating speed of a main shaft of the circular flat grinding is 1400r/min, and the feeding amount is 0.005-0.01 mm.
Preferably, in the step 2, the step 3 and the step 4, when the ceramic dressing ring is put on the grinding disc, the flatness of the grinding disc is firstly detected,
when the flatness is in the range of 0.2 microns, the flatness is directly used;
when the flatness exceeds 0.2 micron, the grinding disc is trimmed by a diamond trimming disc of the grinding disc, so that the flatness is within 0.2 micron.
Preferably, in step 2, step 3 and step 4, a layer of rubber pad is padded between the movable ring and the counterweight and is fixed by screws.
Preferably, in the step 2, the compound grinding agent is added for 1 time every 15 to 20 seconds, the rotation speed of a grinding disc is 25 to 30r/min, and grinding is carried out for 1.5 to 2 hours.
Preferably, in the step 3, the compound grinding agent is added for 1 time every 25 to 30 seconds, the rotation speed of a grinding disc is 20 to 23r/min, and grinding is carried out for 1.5 to 2 hours.
Preferably, in the step 4, the compound grinding agent is added for 1 time every 50-60 seconds, and the rotating speed of a grinding disc is 20-23 r/min.
Preferably, in the step 4, the lapping and grinding are performed for 1.5 to 2 hours.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a method for processing chrome-plated sealing surface of a movable ring, which comprises the steps of firstly processing the chrome layer sealing surface of the movable ring uniformly to ensure that the contact surface is stressed uniformly when the chromium layer sealing surface is processed later, then carrying out coarse grinding processing, then putting a ceramic finishing ring on a grinding disc, putting the movable ring in the ceramic finishing ring, enabling the large end surface of the movable ring to be in contact with the upper surface of the grinding disc, then adding composite grinding agent, placing a balance weight on the movable ring, enabling the shape of the balance weight to be matched with the shape and the size of the movable ring, carrying out coarse grinding on the large end surface of the movable ring, taking out the movable ring after the coarse grinding is finished, cleaning, removing the composite grinding agent in the grinding disc, carrying out finish grinding and ultra-precision grinding on the movable ring according to the same operation process, selecting grinding agent, balance weight and processing parameters at different processing stages, ensuring the processing quality of the sealing surface, improving the efficiency, and simultaneously solving the problem of surface edge collapse existing in the processing process, The defects of scratches and pits and low processing efficiency, and meets the processing requirements of the ultra-precise sealing surface of the moving ring.
Drawings
Fig. 1 is a schematic structural view of the rotating ring of the present invention.
Fig. 2 is a schematic structural view of the counterweight of the present invention.
FIG. 3 is a schematic diagram of the detection of a standard flat crystal according to the present invention.
In the figure: 1-moving ring, 2-counterweight, 3-lamp box, 4-moving ring to be measured, 5-standard flat crystal, 6-baffle, 7-sodium lamp and 8-plane mirror.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention relates to a method for processing a chrome-plated sealing surface of a moving ring for a high-power gas turbine and an aeroengine, wherein the moving ring is made of 40CrNiMoA which is one kind of alloy steel, the Brinell hardness HBS after modulation treatment is 311-388, the thickness of end face chrome plating is 0.06-0.09 mm, the flatness requirement of a working face is 0.001mm, and the surface roughness is Ra0.04.
The grinding surface of the part is a chromium-plated layer, the part is hard, the requirement on the processing surface is strict, the grinding method is firstly adopted for rough processing, then the grinding method is adopted for ensuring the final requirement, the requirements on the flatness of the part are difficult to ensure due to the cutting force generated during grinding and the deformation generated by the stress release of the part, so that the subsequent grinding is required, the rough grinding, the fine grinding and the ultra-fine grinding are carried out during grinding, and the processing method is finally formulated by combining composite grinding agents with different granularities and balance weights with different specifications so as to meet the requirements on the processing quality and the processing efficiency.
The basic sequence is as follows:
firstly, rough machining is carried out on the blank of the moving ring shown in figure 1 to obtain the moving ring to be plated with chromium;
secondly, carrying out pliers processing after the large end face of the moving ring to be subjected to chrome plating is subjected to chrome plating, specifically, polishing inner and outer flashes of a chromium layer of a part by using an air gun to ensure that the contact surface is uniformly stressed during grinding processing, then roughly grinding the large end face, and then cleaning and inspecting;
and thirdly, then performing rough machining on the ultra-precise sealing surface, fine machining on the ultra-precise sealing surface and ultra-precise machining on the ultra-precise sealing surface, namely performing rough grinding on the large end face, fine grinding on the large end face and ultra-precise grinding on the large end face respectively, and finally performing magnetic flaw detection, cleaning inspection and warehousing.
The specific steps are as follows,
the specification of the grinding disc is selected as
The circular flat grinding (MG7340/1) roughly grinds the plane of the large end surface of the movable ring; the rotating speed of a main shaft of the circular flat grinding is 1400r/min, and the feeding amount is 0.005-0.01 mm; 60 white corundum grinding wheels are used in the processing process, and the white corundum is aligned in time in the grinding processThe end face of the grinding wheel is trimmed, so that the grinding wheel is sharp, and unnecessary extrusion and friction between the grinding wheel and parts are reduced;
after coarse grinding, cleaning, and checking that the planeness of the large end face reaches 0.015mm and the roughness is Ra0.4.
And step 2, preparing the operation,
a, the requirements of the environmental temperature and humidity,
temperature: the temperature was checked before processing at 20 + -1 deg.C and humidity was normalized.
Selecting a grinding disc with the specification of
The precision grinding machine can realize ultra-precision grinding by finely grinding a large end surface plane.
Before the precision grinder is used, the refrigerator is started for 15 minutes, the refrigerating fluid is checked to be within the MIN-MAX range, and the refrigerating fluid is a cooling unit of the grinding disc, so that the thermal stability and the processing precision of the grinding disc can be guaranteed;
washing the grinding disc with clear water, repeatedly washing, detecting the flatness of the grinding disc with a flatness measuring instrument, allowing the grinding disc to be used within the range of 0.2 microns, otherwise determining that the grinding disc is concave or convex, finishing the grinding disc with a diamond finishing disc of the grinding disc, wherein the diamond finishing disc is tangent to the inner circle of the grinding disc during finishing if the grinding disc is concave, and the diamond finishing disc is tangent to the outer circle of the grinding disc during correction if the grinding disc is convex.
The automatic detection of every 2 ~ 10 minutes when repairing the dish is generally 5 minutes, has 3 pottery when later grinding to repair the ring on the abrasive disc, puts into the ceramic and repaiies the intra-annular with the frock, can put into 3 parts in every pottery repaiies the intra-annular. The ceramic dressing ring can perform a certain degree of micro-repair to the grinding disc.
And b, manufacturing a balance weight to balance parts and increase load.
As shown in fig. 2, the annular groove of the counterweight is only convenient for installation, and only needs to match the weight and shape with the shape of the rotating ring to be processed.
The material of the main body of the counterweight is 40Cr steel, the heat-treated state is a quenched and tempered state, and the outline dimension of one of the quenched and tempered steel is phi 242mm multiplied by 32 mm. When the balance weight is used, a black rubber pad is arranged between the sealing surface of the moving ring to be processed and the balance weight, and then the black rubber pad is fixed by using a 3-M8 screw to prevent parts from being damaged.
c, manufacturing a detection lamp box as shown in fig. 3, wherein a standard single lamp source-a sodium lamp and a standard flat crystal of phi 300 are adopted, the diameter of the flat crystal is phi 300mm, the flatness is not more than 0.3 mu m, and the flat crystal is used for flatness detection;
the grinding disc is trimmed by a diamond trimming disc of the grinding disc again, and the flatness of the grinding disc is detected by a flatness measuring instrument and is allowed to be used within the range of 0.2 microns;
adding a composite grinding agent of 6-14 microns into a precision grinding machine, adding for 1 time every 15-20 seconds, using a balance weight of 16-24 KG at the moment, wherein the rotating speed of a grinding disc is 25-30 r/min, cleaning after 1.5-2 hours, and detecting to achieve the flatness of 0.003-0.006 mm;
the surface roughness reaches Ra0.1.
the grinding disc is trimmed by a diamond trimming disc of the grinding disc again, and the flatness of the grinding disc is detected by a flatness measuring instrument and is allowed to be used within the range of 0.2 microns;
adding a composite grinding agent of 6-14 microns into a precision grinding machine, adding for 1 time every 25-30 seconds, using a balance weight of 8-12 KG at the moment, controlling the rotating speed of a grinding disc to be 20-23 r/min, cleaning after 1.5-2 hours, and detecting the flatness by using a flat crystal to reach 0.0015-0.002 mm;
the surface roughness reaches Ra0.04.
cleaning a precision grinding machine to achieve the aim of no grinding agent, adding 3-6 micron composite grinding agent, adding for 1 time every 50-60 seconds, using a balance weight of 1.5-2 KG at the moment, wherein the rotating speed of a grinding disc is 20-23 r/min, cleaning after 0.5-1 hour, and detecting the flatness by using a flat crystal to achieve 0.001 mm;
the surface roughness reaches Ra0.04.
And 3-5 relate to the clamping and replacement of parts and the replacement of balance weights and composite abrasives.
In the step 6, the step of,
cleaning the parts with absolute ethyl alcohol, wiping the parts with a dust-free paper towel or non-woven fabric, detecting the parts with a flat crystal, keeping the temperature at 20 +/-1 ℃ for not less than 24 hours, and detecting the flatness reaching 0.001mm at 20 +/-1 ℃ to be qualified.
keeping the temperature at 20 +/-1 ℃ for 24 hours, and detecting the flatness of the product to be 0.001mm at 20 +/-1 ℃ by using a grating interference method.
Claims (1)
1. A method for processing a sealing surface of a movable ring for a high-power gas turbine is characterized by comprising the following steps,
step 1, polishing inner and outer flashes of a chromium layer of a moving ring by using an air gun to ensure that the chromium layer is uniformly stressed during processing of a sealing surface of the chromium layer to obtain a large end face of the moving ring, then carrying out coarse grinding on the large end face of the moving ring and cleaning, wherein the flatness of the large end face of the moving ring after the coarse grinding reaches 0.015mm, and the roughness is Ra0.4;
the movable ring is roughly ground in the following way,
the large end face of the movable ring is roughly ground by adopting a circular flat grinding and a white corundum grinding wheel, the rotating speed of a main shaft of the circular flat grinding is 1400r/min, and the feeding amount is 0.005-0.01 mm;
step 2, putting a ceramic dressing ring on a grinding disc, putting the moving ring obtained in the step 1 into the ceramic dressing ring, enabling the large end face of the moving ring to be in contact with the upper surface of the grinding disc, adding 6-14 microns of composite grinding agent into the grinding disc, adding the composite grinding agent 1 time every 15-20 seconds, placing a 16-24 KG balance weight on the moving ring, enabling the shape of the balance weight to be matched with the shape of the moving ring, roughly grinding the large end face of the moving ring, enabling the rotating speed of the grinding disc to be 25-30 r/min, grinding for 1.5-2 hours, taking out the moving ring after rough grinding is finished, cleaning, and removing the composite grinding agent in the grinding disc;
step 3, putting the moving ring obtained in the step 2 into a ceramic trimming ring again, enabling the large end face of the moving ring to be in contact with the upper surface of a grinding disc, adding a composite grinding agent with the particle size of 6-14 micrometers for 1 time into the grinding disc every 25-30 seconds, placing a balance weight with the particle size of 8-12 KG on the moving ring, enabling the shape of the balance weight to be matched with the shape of the moving ring, finely grinding the large end face of the moving ring, enabling the rotating speed of the grinding disc to be 20-23 r/min, grinding for 1.5-2 hours, taking out the moving ring after fine grinding is finished, cleaning, and removing the composite grinding agent in the grinding disc;
step 4, putting the moving ring obtained in the step 3 into a ceramic trimming ring again, enabling the large end face of the moving ring to be in contact with the upper surface of a grinding disc, adding 3-6 microns of composite grinding agent for 1 time into the grinding disc every 50-60 seconds, placing 1.5-2 KG of balance weight on the moving ring, enabling the shape of the balance weight to be matched with the shape of the moving ring, carrying out ultra-precision grinding on the large end face of the moving ring for 1.5-2 hours, enabling the rotating speed of the grinding disc to be 20-23 r/min, taking out the moving ring after the ultra-precision grinding is finished, and then cleaning the moving ring to finish machining of the sealing surface of the moving ring;
in the step 2, the step 3 and the step 4, a layer of rubber pad is padded between the movable ring and the balance weight and is fixed by screws, when the ceramic dressing ring is put on the grinding disc, the flatness of the grinding disc is firstly detected,
when the flatness is in the range of 0.2 microns, the flatness is directly used;
when the flatness exceeds 0.2 micron, the grinding disc is trimmed by a diamond trimming disc of the grinding disc, so that the flatness is within 0.2 micron.
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| CN202010615073.7A CN111716156B (en) | 2020-06-30 | 2020-06-30 | Machining method of sealing surface of moving ring |
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| CN113043075B (en) * | 2021-03-15 | 2022-05-27 | 宁波江丰电子材料股份有限公司 | Grinding method of stainless steel rigid ring |
| CN113134754B (en) * | 2021-05-21 | 2022-06-28 | 南京王行航空附件维修工程有限公司 | Method for repairing worn oil distributing surface of oil cylinder of PTU rotor assembly |
| CN113967858A (en) * | 2021-11-03 | 2022-01-25 | 江苏核电有限公司 | Method and device for grinding sealing surface of valve for nuclear power station |
| CN115647958B (en) * | 2022-10-26 | 2024-11-12 | 福建福清核电有限公司 | A method for controlling the taper of the end face of a mechanical seal ring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055689A (en) * | 1991-05-14 | 1991-10-30 | 长春光学精密机械学院 | High-speed, high-efficiency and high-precision grinding method for mechanical sealing ring |
| JP2002507939A (en) * | 1997-07-10 | 2002-03-12 | ウノバ・ユー・ケイ・リミテッド | Grinding machine spindle |
| CN102828141A (en) * | 2012-09-12 | 2012-12-19 | 金湖县赛欧电气有限公司 | Method for spraying tungsten carbide alloy on valve plate sealing surface at supersonic speed |
| CN103144022A (en) * | 2013-02-04 | 2013-06-12 | 沈阳黎明航空零部件制造有限公司 | Method for grinding sealing face at inner end of graphite sealing seat of aero-engine |
| CN103851083A (en) * | 2012-11-28 | 2014-06-11 | 大连大友高技术陶瓷有限公司 | Production technology of silicon nitride ceramic ball bearing |
-
2020
- 2020-06-30 CN CN202010615073.7A patent/CN111716156B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055689A (en) * | 1991-05-14 | 1991-10-30 | 长春光学精密机械学院 | High-speed, high-efficiency and high-precision grinding method for mechanical sealing ring |
| JP2002507939A (en) * | 1997-07-10 | 2002-03-12 | ウノバ・ユー・ケイ・リミテッド | Grinding machine spindle |
| CN102828141A (en) * | 2012-09-12 | 2012-12-19 | 金湖县赛欧电气有限公司 | Method for spraying tungsten carbide alloy on valve plate sealing surface at supersonic speed |
| CN103851083A (en) * | 2012-11-28 | 2014-06-11 | 大连大友高技术陶瓷有限公司 | Production technology of silicon nitride ceramic ball bearing |
| CN103144022A (en) * | 2013-02-04 | 2013-06-12 | 沈阳黎明航空零部件制造有限公司 | Method for grinding sealing face at inner end of graphite sealing seat of aero-engine |
Non-Patent Citations (1)
| Title |
|---|
| 动环镀铬层微裂纹分析与工艺措施;孙秀京;《航天工艺》;19950830;第12页-13页 * |
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