CN114161311A - Process method for grinding inner surface of aviation stainless steel gas cylinder - Google Patents

Process method for grinding inner surface of aviation stainless steel gas cylinder Download PDF

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Publication number
CN114161311A
CN114161311A CN202111506734.3A CN202111506734A CN114161311A CN 114161311 A CN114161311 A CN 114161311A CN 202111506734 A CN202111506734 A CN 202111506734A CN 114161311 A CN114161311 A CN 114161311A
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CN
China
Prior art keywords
grinding
gas cylinder
stainless steel
steel gas
grinding process
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CN202111506734.3A
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Chinese (zh)
Inventor
孟丽莉
李国宝
杨振华
李召君
李丹丹
赵帅
陈琳
王建民
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Liaoning Metal Technology Co ltd
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Liaoning Metal Technology Co ltd
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Priority to CN202111506734.3A priority Critical patent/CN114161311A/en
Publication of CN114161311A publication Critical patent/CN114161311A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/093Cleaning containers, e.g. tanks by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B24B31/14Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which is characterized in that a grinding material, grinding paste and deionized water are filled in the stainless steel gas cylinder; the grinding plug is screwed on the opening of the stainless steel gas cylinder through threads; then the stainless steel gas cylinder filled with the grinding material, the grinding paste and the deionized water is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder is carried out under the driving of the rotation of the grinding rotary machine; controlling grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder; after grinding, repeatedly washing the inner surface of the stainless steel gas cylinder by heating and pressurizing deionized water for many times to wash away residual substances on the inner surface of the stainless steel gas cylinder. By adopting the gas cylinder inner surface grinding process method, the gas cylinder with the ultrathin wall thickness, the stainless steel lining wall of which is only 0.8mm, can be ground, and the requirements of inner surface roughness Ra0.1 and dimensional tolerance of 0.03mm can be met.

Description

Process method for grinding inner surface of aviation stainless steel gas cylinder
Technical Field
The invention belongs to the technical field of grinding and polishing, and particularly relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder.
Background
The stainless steel gas cylinder for aviation is a gas storage and filtration gas cylinder, the inner surface of the stainless steel gas cylinder for aviation is a piston working surface, and gas is controlled to enter and exit through the piston inside the stainless steel gas cylinder. Therefore, the requirements for roughness and accuracy of the inner surface are high. The existing grinding and polishing process is a traditional manual and mechanical rough and fine polishing process, and has obvious treatment effect on the outer surface of the stainless steel gas cylinder; but the inner surface of the stainless steel gas cylinder can not be treated, particularly the gas cylinder product workpiece with deeper depth and smaller diameter. For gas cylinder product workpieces with more stringent dimensions, for example: the wall thickness of the stainless steel lining of the gas cylinder is only 0.8mm, and the traditional manual and mechanical grinding mode is adopted, so that the size is difficult to guarantee, and the roundness of the inner surface cannot be controlled.
Disclosure of Invention
Aiming at the problems, the invention makes up the defects of the prior art and provides a process method for grinding the inner surface of an aviation stainless steel gas cylinder; by adopting the gas cylinder inner surface grinding process method, the gas cylinder with the ultrathin wall thickness, the stainless steel lining wall of which is only 0.8mm, can be ground, and the requirements of inner surface roughness Ra0.1 and dimensional tolerance of 0.03mm can be met.
In order to achieve the purpose, the invention adopts the following technical scheme.
The invention relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which comprises the following steps:
firstly, filling a grinding material, grinding paste and deionized water into a stainless steel gas cylinder; then, a grinding plug cap is screwed on the opening of the stainless steel gas cylinder through threads; then the stainless steel gas cylinder filled with the grinding material, the grinding paste and the deionized water is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder is carried out under the driving of the rotation of the grinding rotary machine; controlling grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder; after grinding, repeatedly washing the inner surface of the stainless steel gas cylinder by heating and pressurizing deionized water for many times to wash away residual substances on the inner surface of the stainless steel gas cylinder.
According to a preferable scheme of the invention, the grinding process is a rough grinding process, the grinding material adopted in the rough grinding process is brown corundum, and the roughness of the inner surface of the stainless steel gas cylinder is reduced to Ra0.3 by repeatedly rubbing the inner surface of the stainless steel gas cylinder by using the edge of the brown corundum under the rotation drive of a grinding rotary machine.
In another preferred embodiment of the present invention, the brown corundum used is triangular or rhombus in shape.
In another preferred embodiment of the present invention, the grinding time of the rough grinding process is 12 to 24 hours.
As another preferred scheme of the invention, or the grinding process is a fine grinding process, the adopted abrasive in the fine grinding process is a high-magnetic aluminum spherical abrasive, the high-magnetic aluminum spherical abrasive is repeatedly rubbed against the inner surface of the stainless steel gas cylinder under the rotation of a grinding rotary machine, and the inner surface of the stainless steel gas cylinder is ground to a mirror surface state; the rotation of the grinding rotary machine includes rotation and revolution.
In another preferred embodiment of the present invention, the polishing time of the finish polishing process is 6 to 8 hours.
As another preferred scheme of the invention, after the grinding is finished, the inner surface of the stainless steel gas cylinder is repeatedly flushed for 3-5 times by adopting heated and pressurized deionized water.
As another preferable scheme of the invention, the temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa.
The invention has the beneficial effects that:
the invention provides a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which can grind an ultrathin-wall-thickness gas cylinder with the stainless steel lining wall thickness of 0.8mm, and adopts brown corundum abrasive, grinding paste and deionized water to fill the stainless steel gas cylinder; loading the mixture into a grinding rotary machine, and setting the grinding rotary machine into a rotation and revolution mode; the non-metal brown corundum abrasive is driven to rotate under the rotating action of the grinding rotating machine so as to repeatedly grind the inner surface of the stainless steel gas cylinder; according to the requirement of the roughness, the grinding time is controlled, so that the roughness of the inner surface of the stainless steel gas cylinder can reach Ra0.1, and the dimensional tolerance is only 0.03 mm.
Drawings
FIG. 1 is a schematic structural view of a stainless steel cylinder filled with brown alumina, grinding paste and deionized water.
The labels in the figure are: 1 is a stainless steel gas cylinder, 2 is grinding paste and deionized water, 3 is a grinding plug cover, and 4 is brown corundum.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The invention relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which comprises the following steps:
as shown in fig. 1, firstly, a stainless steel gas cylinder 1 is filled with a grinding material, a grinding paste and deionized water 2; then, a grinding plug cap 3 is screwed on the opening of the stainless steel gas cylinder 1 through threads; then the stainless steel gas cylinder 1 filled with the grinding material, the grinding paste and the deionized water 2 is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder 1 is carried out under the driving of the rotation of the grinding rotary machine; controlling the grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder 1; after grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed by heating and pressurizing deionized water for multiple times, and residual substances on the inner surface of the stainless steel gas cylinder 1 are flushed.
The grinding process is a rough grinding process, the adopted abrasive in the rough grinding process is brown corundum 4, and the adopted brown corundum 4 is triangular or rhombus; repeatedly rubbing the inner surface of the stainless steel gas cylinder 1 by using the edge of the brown corundum 4 under the rotation of the grinding rotating machine to reduce the roughness of the inner surface of the stainless steel gas cylinder 1 to Ra0.3, wherein the grinding time in the rough grinding process is 12h, and the inner surface state of the stainless steel gas cylinder 1 is observed by detaching the grinding blanking cap 3.
If the inner surface state of the stainless steel gas cylinder 1 is not good enough, the grinding time can be increased, and the grinding time in the rough grinding process is generally 12-24 hours according to the requirement of roughness.
In addition, for stainless steel gas cylinder products, the coarse grinding efficiency is high; and for the titanium alloy gas cylinder product, the coarse grinding time is about doubled. Secondly, for aluminum alloy gas cylinder products, acid grinding paste is not needed to be adopted as the grinding paste, so that the inner surface of the aluminum alloy gas cylinder is prevented from being corroded.
After grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed for 4 times by heating and pressurizing deionized water, so that residual substances on the inner surface of the stainless steel gas cylinder 1 are thoroughly flushed, and the influence on the cleanliness of a gas source is avoided.
The temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa; the temperature and pressure values are particularly suitable for gas cylinders with composite material layers.
Example 2
The invention relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which comprises the following steps:
as shown in fig. 1, firstly, a stainless steel gas cylinder 1 is filled with a grinding material, a grinding paste and deionized water 2; then, a grinding plug cap 3 is screwed on the opening of the stainless steel gas cylinder 1 through threads; then the stainless steel gas cylinder 1 filled with the grinding material, the grinding paste and the deionized water 2 is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder 1 is carried out under the driving of the rotation of the grinding rotary machine; controlling the grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder 1; after grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed by heating and pressurizing deionized water for multiple times, and residual substances on the inner surface of the stainless steel gas cylinder 1 are flushed.
The grinding process is a rough grinding process, the adopted grinding material in the rough grinding process is brown corundum 4, and the adopted brown corundum 4 is triangular or rhombus; repeatedly rubbing the inner surface of the stainless steel gas cylinder 1 by using the edge of the brown corundum 4 under the rotation of the grinding rotating machine to reduce the roughness of the inner surface of the stainless steel gas cylinder 1 to Ra0.1, wherein the grinding time in the rough grinding process is 13h, and the inner surface state of the stainless steel gas cylinder 1 is observed by detaching the grinding blanking cap 3.
If the inner surface state of the stainless steel gas cylinder 1 is not good enough, the grinding time can be increased, and the grinding time in the rough grinding process is generally 12-24 hours according to the requirement of roughness; specifically, the grinding time is controlled according to the roughness and the size requirements of the inner surface of the stainless steel gas cylinder 1; in general, when the roughness is Ra0.1 and the removal amount is 0.001mm, the polishing time is about 12 hours.
In addition, for stainless steel gas cylinder products, the coarse grinding efficiency is high; and for the titanium alloy gas cylinder product, the coarse grinding time is about doubled. Secondly, for aluminum alloy gas cylinder products, acid grinding paste is not needed to be adopted as the grinding paste, so that the inner surface of the aluminum alloy gas cylinder is prevented from being corroded.
After grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed for 5 times by heating and pressurizing deionized water, so that residual substances on the inner surface of the stainless steel gas cylinder 1 are thoroughly flushed, and the influence on the cleanliness of a gas source is avoided.
The temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa; the temperature and pressure values are particularly suitable for gas cylinders with composite material layers.
Example 3
The invention relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which comprises the following steps:
as shown in fig. 1, firstly, a stainless steel gas cylinder 1 is filled with a grinding material, a grinding paste and deionized water 2; then, a grinding plug cap 3 is screwed on the opening of the stainless steel gas cylinder 1 through threads; then the stainless steel gas cylinder 1 filled with the grinding material, the grinding paste and the deionized water 2 is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder 1 is carried out under the driving of the rotation of the grinding rotary machine; controlling the grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder 1; after grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed by heating and pressurizing deionized water for multiple times, and residual substances on the inner surface of the stainless steel gas cylinder 1 are flushed.
The grinding process is a fine grinding process, the adopted grinding material in the fine grinding process is high-magnetism aluminum spherical grinding material, the high-magnetism aluminum spherical grinding material is used for repeatedly rubbing the inner surface of the stainless steel gas cylinder 1 under the rotation driving of the grinding rotary machine, and the rotation of the grinding rotary machine comprises rotation and revolution; and the grinding time in the fine grinding process is 6.5h, and the inner surface of the stainless steel gas cylinder 1 is ground to a mirror surface state.
After grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed for 4 times by heating and pressurizing deionized water, so that residual substances on the inner surface of the stainless steel gas cylinder 1 are thoroughly flushed, and the influence on the cleanliness of a gas source is avoided.
The temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa; the temperature and pressure values are particularly suitable for the stainless steel gas cylinder with the composite material layer on the outer side.
Similarly, for aluminum alloy gas cylinder products, the grinding paste avoids the use of acidic media so as to avoid corrosion on the inner surface of the aluminum alloy gas cylinder products.
Example 4
The invention relates to a process method for grinding the inner surface of an aviation stainless steel gas cylinder, which comprises the following steps:
as shown in fig. 1, firstly, a stainless steel gas cylinder 1 is filled with a grinding material, a grinding paste and deionized water 2; then, a grinding plug cap 3 is screwed on the opening of the stainless steel gas cylinder 1 through threads; then the stainless steel gas cylinder 1 filled with the grinding material, the grinding paste and the deionized water 2 is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder 1 is carried out under the driving of the rotation of the grinding rotary machine; controlling the grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder 1; after grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed by heating and pressurizing deionized water for multiple times, and residual substances on the inner surface of the stainless steel gas cylinder 1 are flushed.
The grinding process is a fine grinding process, the adopted grinding material in the fine grinding process is high-magnetism aluminum spherical grinding material, the high-magnetism aluminum spherical grinding material is used for repeatedly rubbing the inner surface of the stainless steel gas cylinder 1 under the rotation driving of the grinding rotary machine, and the rotation of the grinding rotary machine comprises rotation and revolution; and the grinding time in the fine grinding process is 7h, and the inner surface of the stainless steel gas cylinder 1 is ground to a mirror surface state.
After grinding, the inner surface of the stainless steel gas cylinder 1 is repeatedly flushed for 5 times by heating and pressurizing deionized water, so that residual substances on the inner surface of the stainless steel gas cylinder 1 are thoroughly flushed, and the influence on the cleanliness of a gas source is avoided.
The temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa; the temperature and pressure values are particularly suitable for the stainless steel gas cylinder with the composite material layer on the outer side.
Similarly, for aluminum alloy gas cylinder products, the grinding paste avoids the use of acidic media so as to avoid corrosion on the inner surface of the aluminum alloy gas cylinder products.
By adopting the process method for grinding the inner surface of the aviation stainless steel gas cylinder, the roughness of the inner surface of the stainless steel gas cylinder 1 can be controlled below Ra0.3, and the effect of Ra0.1 is achieved; the size removal is about 0.001mm and the piston assembly is well achieved.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.

Claims (8)

1. The inner surface grinding process method of the aviation stainless steel gas cylinder is characterized by comprising the following steps of: firstly, filling a grinding material, grinding paste and deionized water into a stainless steel gas cylinder; then, a grinding plug cap is screwed on the opening of the stainless steel gas cylinder through threads; then the stainless steel gas cylinder filled with the grinding material, the grinding paste and the deionized water is arranged in a grinding rotary machine, and the grinding process of the inner surface of the stainless steel gas cylinder is carried out under the driving of the rotation of the grinding rotary machine; controlling grinding time according to the roughness and size requirements of the inner surface of the stainless steel gas cylinder; after grinding, repeatedly washing the inner surface of the stainless steel gas cylinder by heating and pressurizing deionized water for many times to wash away residual substances on the inner surface of the stainless steel gas cylinder.
2. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 1, characterized in that: the grinding process is a rough grinding process, the adopted grinding material in the rough grinding process is brown corundum, and the roughness of the inner surface of the stainless steel gas cylinder is reduced to Ra0.3 by repeatedly rubbing the inner surface of the stainless steel gas cylinder by using the edge of the brown corundum under the rotation drive of a grinding rotary machine.
3. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 2, characterized in that: the adopted brown corundum is triangular or rhombus in shape.
4. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 2, characterized in that: the grinding time in the coarse grinding process is 12-24 h.
5. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 1, characterized in that: or the grinding process is a fine grinding process, the adopted grinding material in the fine grinding process is a high-magnetism spherical aluminum grinding material, the high-magnetism spherical aluminum grinding material is repeatedly rubbed against the inner surface of the stainless steel gas cylinder under the rotation driving of the grinding rotating machine, and the inner surface of the stainless steel gas cylinder is ground to a mirror surface state; the rotation of the grinding rotary machine includes rotation and revolution.
6. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 5, characterized in that: the grinding time in the fine grinding process is 6-8 h.
7. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 1, characterized in that: and after the grinding is finished, repeatedly flushing the inner surface of the stainless steel gas cylinder for 3-5 times by using heated and pressurized deionized water.
8. The inner surface grinding process method of the aviation stainless steel gas cylinder according to claim 1, characterized in that: the temperature of the heated and pressurized deionized water is not more than 80 ℃, and the pressure is controlled within 0.3-1 MPa.
CN202111506734.3A 2021-12-10 2021-12-10 Process method for grinding inner surface of aviation stainless steel gas cylinder Pending CN114161311A (en)

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CN202111506734.3A CN114161311A (en) 2021-12-10 2021-12-10 Process method for grinding inner surface of aviation stainless steel gas cylinder

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813757A (en) * 1971-09-01 1974-06-04 King Seeley Thermos Co Method of coating a vacuum bottle
CN109794844A (en) * 2018-12-20 2019-05-24 鲁西新能源装备集团有限公司 A kind of high-purity gas cylinder grinding manufacture craft
CN112238392A (en) * 2020-09-29 2021-01-19 中国科学院高能物理研究所 Centrifugal barrel polishing mechanical pre-polishing method for copper cavity substrate
CN214923533U (en) * 2021-11-01 2021-11-30 沈阳美茵联合检测有限公司 Gas cylinder inner surface cleaning and rust removing equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813757A (en) * 1971-09-01 1974-06-04 King Seeley Thermos Co Method of coating a vacuum bottle
CN109794844A (en) * 2018-12-20 2019-05-24 鲁西新能源装备集团有限公司 A kind of high-purity gas cylinder grinding manufacture craft
CN112238392A (en) * 2020-09-29 2021-01-19 中国科学院高能物理研究所 Centrifugal barrel polishing mechanical pre-polishing method for copper cavity substrate
CN214923533U (en) * 2021-11-01 2021-11-30 沈阳美茵联合检测有限公司 Gas cylinder inner surface cleaning and rust removing equipment

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