CN116872095A - Sand blasting method for turbine machinery rotor by using glass pellets - Google Patents
Sand blasting method for turbine machinery rotor by using glass pellets Download PDFInfo
- Publication number
- CN116872095A CN116872095A CN202310815744.8A CN202310815744A CN116872095A CN 116872095 A CN116872095 A CN 116872095A CN 202310815744 A CN202310815744 A CN 202310815744A CN 116872095 A CN116872095 A CN 116872095A
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- Prior art keywords
- rotor
- blasting
- glass
- sand blasting
- shot
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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.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 105
- 238000005488 sandblasting Methods 0.000 title claims abstract description 97
- 239000008188 pellet Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005422 blasting Methods 0.000 claims abstract description 54
- 238000007689 inspection Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 230000004075 alteration Effects 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims description 7
- 239000006249 magnetic particle Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 239000006187 pill Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
Abstract
The invention relates to the field of internet data flow, and discloses a sand blasting method for a turbomachinery rotor by using glass pellets, which comprises the following steps: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor; preparing sand blasting equipment and glass pellets; wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting; blasting the inside of the rotor, the runner and other parts by glass shot blasting; surface blasting, namely performing glass shot blasting on the outer surface of the rotor, wherein the blasted part is visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists; after the glass pellets are blown and blasted, the rotor is blown in a full range, so that no glass pellets or other sundries remain inside and outside the rotor; and (5) quality inspection. According to the method, the glass pellets are used for carrying out sand blasting on the surface of the rotor, so that the smoothness in a runner can be greatly improved, and the output efficiency is improved.
Description
Technical Field
The invention relates to the field of machining, in particular to a sand blasting method for a turbine mechanical rotor by using glass pellets.
Background
Turbomachinery (turbomachinery) is a dynamic fluid machine with blades. A common feature of turbomachinery is the high-speed rotational movement of the bladed rotor, whereby a force interaction between the blades and the fluid (gas or liquid) is created as the fluid flows through the channels between the blades, thereby effecting energy conversion.
The rotor of a large turbine machine usually forms a layer of oxide film on the surface after heat treatment processing, and there is a risk that the oxide film falls off to block the flow passage, resulting in reduction of output power. Therefore, it is necessary to remove the oxide film attached to the rotor surface by sand blasting, thereby avoiding the damage caused by the falling of the oxide film.
Common to existing blasting methods are: a material for mechanical treatment of surfaces (hereinafter also referred to as "original blasting material") is sprayed onto a surface to be blasted, typically a granular material. By granular material is understood in a broad sense a granular material consisting of particles having a defined particle size distribution, symmetrically shaped particles, for example beads, being also referred to hereinafter as granular material. The shape, the grain size distribution and the material used for the particles are chosen in this case according to the material of the workpiece to be treated and the desired effect of the blasting process on the workpiece. The process aims can be as follows: removing an old coating from a surface; ready for repainting of a surface; but it is also possible to polish the surface; or to improve the mechanical properties of the surface.
Existing blasting processes such as CN201080065283.8, blasting materials and blasting methods, comprising at least one material for surface mechanical treatment, provided with an additive for degreasing and cleaning of the surface to be blasted and/or the blasting material, the additive comprising a particulate material having a fracture resistance less than the fracture resistance of the at least one material for surface mechanical treatment itself under the mechanical load conditions to which the blasting material is subjected during the blasting method, characterized in that the additive is perlite rock.
On the surface to be blasted there is a layer of grease, a layer of silicone oil, a parting agent residue or the like. Since the blasting material is generally circulated and recycled in the blasting apparatus, impurities are accumulated in the blasting material on those workpieces, resulting in increased cleaning costs for the blasting apparatus and the blasting material. Thus, it is generally prescribed that the work pieces are subjected to a pre-cleaning treatment by the sandblasting equipment manufacturer, which treatment involves a significant risk of damaging the human health and the environment due to the solvents used, and accordingly entails additional costs.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the sand blasting method for the turbine machinery rotor by using the glass pellets, and the glass pellets are used for carrying out sand blasting on the surface of the rotor, so that the smoothness in a runner can be greatly improved, and the output efficiency is improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in one embodiment of the present invention, a method of blasting a turbomachine rotor with glass pellets is provided, the method comprising:
s01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
s03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting is carried out on the parts such as the interior of the rotor, the flow channel and the like, so that the whole coverage of the parts needing glass pill sand blasting inside is ensured;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor to ensure that the positions needing glass shot sand blasting on the outside are visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection.
Further, the air pressure of the sand blasting equipment in the step S02 is 5-7bar, and the pressure output of the sand blasting equipment is kept stable;
further, the technical requirements of the glass pellet in S02 include:
number of glass pellets: 60-120 meshes, allowing repeated use, and avoiding mixing other impurities when the glass pellets are recovered, wherein the meshes are not in line with the requirements and are to be screened out;
mohs hardness: 6-7 Mohs;
rockwell hardness: 46HR;
appearance: smooth, round, transparent glass without impurity; rounding rate: more than or equal to 90 percent;
the magnetic particles are not more than 0.1% of the weight of the product;
the bubble content in the glass bead body is lower than 10%;
does not contain any silicone components.
Further, the S04 internal blasting uses an endoscope blasting equipment for internal blasting.
Further, the S07 includes:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
The beneficial effects are that:
according to the invention, the glass pellets are used for carrying out sand blasting on the runner, so that the output efficiency of the rotor can be effectively improved. And meanwhile, the glass pellets are used for carrying out sand blasting on the rotor, so that the surface of the rotor can obtain quite high cleanliness and different roughness, the mechanical property of the surface of the rotor is improved, and the fatigue resistance of the rotor is improved. The adhesive force between the rotor and the coating is increased, the durability of the coating is prolonged, and the leveling and decoration of the coating are facilitated.
Drawings
FIG. 1 is a schematic flow diagram of a method of blasting a turbomachine rotor with glass pellets in accordance with an embodiment of the present invention.
Detailed Description
The principles and spirit of the present invention will be described below with reference to several exemplary embodiments, with the understanding that these embodiments are merely provided to enable those skilled in the art to better understand and practice the invention and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
According to the embodiment of the invention, the sand blasting method of the turbine machinery rotor by using the glass pellets is provided, and the glass pellets are used for carrying out sand blasting on the surface of the rotor, so that the smoothness in a runner can be greatly improved, and the output efficiency is improved.
The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments thereof.
FIG. 1 is a schematic flow diagram of a method of blasting a turbomachine rotor with glass pellets in accordance with an embodiment of the present invention. As shown in fig. 1, the method includes:
s01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
s03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting is carried out on the parts such as the interior of the rotor, the flow channel and the like, so that the whole coverage of the parts needing glass pill sand blasting inside is ensured;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor to ensure that the positions needing glass shot sand blasting on the outside are visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection.
The air pressure of the sand blasting equipment in the step S02 is 5-7bar, and the pressure output of the sand blasting equipment is kept stable;
the technical requirements of the glass pellets in the step S02 include:
number of glass pellets: 60-120 meshes, allowing repeated use, and avoiding mixing other impurities when the glass pellets are recovered, wherein the meshes are not in line with the requirements and are to be screened out;
mohs hardness: 6-7 Mohs;
rockwell hardness: 46HR;
appearance: smooth, round, transparent glass without impurity; rounding rate: more than or equal to 90 percent;
the magnetic particles are not more than 0.1% of the weight of the product;
the bubble content in the glass bead body is lower than 10%;
does not contain any silicone components.
The S04 internal sand blasting adopts an endoscope sand blasting device to carry out internal sand blasting.
The S07 includes:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
It should be noted that although the operations of the method of the present invention are described in a particular order in the above embodiments and the accompanying drawings, this does not require or imply that the operations must be performed in the particular order or that all of the illustrated operations be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.
For a clearer explanation of the above-described blasting apparatus for a turbomachine rotor using glass pellets, a specific example will be described below, however, it should be noted that this example is only for better illustration of the present invention and is not meant to be unduly limiting.
Embodiment 1,
S01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
the air pressure of the sand blasting equipment is 5bar, and the pressure output of the sand blasting equipment is kept stable;
number of glass pellets: 60 meshes, which allows recycling, other impurities cannot be mixed in the glass pellets during recycling, and the mesh number is not required to be screened out;
mohs hardness: 6 Mohs;
rockwell hardness: 46HR;
appearance: smooth, round, transparent glass without impurity; rounding rate: 90%;
the magnetic particles are 0.1% of the weight of the product;
the bubble content in the glass bead body is 9%;
does not contain any silicone components.
S03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting, namely, performing internal sand blasting on the parts such as the interior of the rotor, the flow channel and the like by adopting an endoscope sand blasting device, so as to ensure that the parts needing glass pill sand blasting in the interior are fully covered;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor to ensure that the positions needing glass shot sand blasting on the outside are visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection comprises:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
Embodiment II,
S01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
the air pressure of the sand blasting equipment is 6bar, and the pressure output of the sand blasting equipment is kept stable;
number of glass pellets: 90 meshes, which allows recycling, other impurities cannot be mixed in the glass pellets during recycling, and the meshes are not required to be screened out;
mohs hardness: 6.5 Mohs;
rockwell hardness: 46HR;
appearance: smooth, round, transparent glass without impurity; rounding rate: 95%;
the magnetic particles are 0.05% of the weight of the product;
the bubble content in the glass bead body is 5%;
does not contain any silicone components.
S03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting, namely, performing internal sand blasting on the parts such as the interior of the rotor, the flow channel and the like by adopting an endoscope sand blasting device, so as to ensure that the parts needing glass pill sand blasting in the interior are fully covered;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor to ensure that the positions needing glass shot sand blasting on the outside are visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection comprises:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
Third embodiment,
S01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
the air pressure of the sand blasting equipment is 7bar, and the pressure output of the sand blasting equipment is kept stable;
number of glass pellets: 120 meshes, which allows recycling, other impurities cannot be mixed in the glass pellets during recycling, and the mesh number is not required to be screened out;
mohs hardness: 7 Morse;
rockwell hardness: 46HR;
appearance: smooth, round, transparent glass without impurity; rounding rate: 99 percent;
the magnetic particles are 0.01% of the weight of the product;
the bubble content in the glass bead body is 1%;
does not contain any silicone components.
S03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting, namely, performing internal sand blasting on the parts such as the interior of the rotor, the flow channel and the like by adopting an endoscope sand blasting device, so as to ensure that the parts needing glass pill sand blasting in the interior are fully covered;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor to ensure that the positions needing glass shot sand blasting on the outside are visually and fully covered, the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection comprises:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
According to the invention, the glass pellets are used for carrying out sand blasting on the runner, so that the output efficiency of the rotor can be effectively improved. And meanwhile, the glass pellets are used for carrying out sand blasting on the rotor, so that the surface of the rotor can obtain quite high cleanliness and different roughness, the mechanical property of the surface of the rotor is improved, and the fatigue resistance of the rotor is improved. The adhesive force between the rotor and the coating is increased, the durability of the coating is prolonged, and the leveling and decoration of the coating are facilitated.
While the spirit and principles of the present invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments nor does it imply that features of the various aspects are not useful in combination, nor are they useful in any combination, such as for convenience of description. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
It should be apparent to those skilled in the art that various modifications or variations can be made in the present invention without requiring any inventive effort by those skilled in the art based on the technical solutions of the present invention.
Claims (5)
1. A method of blasting a turbomachine rotor with glass pellets, the method comprising:
s01: the user terminal initiates a file distribution request to the user interaction module;
s02: the user interaction module collects user IP information and requested file information according to the file distribution request and forwards the user IP information and the requested file information to the background module for processing;
s01: checking the profile, performing comprehensive quality inspection on a processed rotor prepared for sandblasting, and carefully cleaning the surface of the rotor;
s02: preparing sand blasting equipment and glass pellets;
s03: wrapping the protective film, and wrapping the part of the rotor which does not need to be sandblasted with the protective film, so as to prevent false sandblasting;
s04, internal sand blasting is carried out, and glass shot sand blasting is carried out on the parts such as the interior of the rotor, the flow channel and the like;
s05, surface sand blasting, namely performing glass shot sand blasting on the outer surface of the rotor, and performing visual full coverage on the sand blasting part, wherein the appearance is consistent, the shot blasting strength is consistent, and no chromatic aberration exists;
s06, purging the glass pellets, wherein after the sand blasting of the glass pellets is finished, the rotor is purged in a full range, so that no glass pellets or other sundries remain inside and outside the rotor;
s07, quality inspection.
2. The method for blasting a turbomachinery rotor with glass pellets according to claim 1, wherein the air pressure of the blasting apparatus in S02 is 5-7bar and the pressure output of the blasting apparatus is kept stable.
3. The method for blasting a turbomachinery rotor with glass pellets according to claim 1, wherein the technical requirements of the glass pellets in S02 include:
number of glass pellets: 60-120 meshes;
mohs hardness: 6-7 Mohs;
rockwell hardness: 46HR;
rounding rate: more than or equal to 90 percent;
the magnetic particles are not more than 0.1% of the weight of the product;
the bubble content in the glass bead body is lower than 10%;
does not contain any silicone components.
4. The method of blasting a turbomachine rotor with glass pellets according to claim 1, wherein said S04 internal blasting is internal blasting with an endoscopic blasting apparatus.
5. The method of blasting a turbomachine rotor with glass pellets according to claim 1, wherein said S07 comprises:
s071, checking whether the surface roughness meets the design requirement;
s072, checking the appearance quality of a rotor, wherein the rotor is required to be covered by glass shot areas visually, the appearance is consistent, the shot strength is consistent, and no chromatic aberration exists;
s073, checking the part without sand blasting, wherein no collision or scratch is generated in the process of shot blasting;
s074, whether glass shot residues and sundries exist on the surface of the rotor after shot blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310815744.8A CN116872095A (en) | 2023-07-05 | 2023-07-05 | Sand blasting method for turbine machinery rotor by using glass pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310815744.8A CN116872095A (en) | 2023-07-05 | 2023-07-05 | Sand blasting method for turbine machinery rotor by using glass pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116872095A true CN116872095A (en) | 2023-10-13 |
Family
ID=88267240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310815744.8A Pending CN116872095A (en) | 2023-07-05 | 2023-07-05 | Sand blasting method for turbine machinery rotor by using glass pellets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116872095A (en) |
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2023
- 2023-07-05 CN CN202310815744.8A patent/CN116872095A/en active Pending
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