WO2020258244A1 - Procédé de polissage mécano-chimique et dispositif de polissage pour impulseur intégral - Google Patents

Procédé de polissage mécano-chimique et dispositif de polissage pour impulseur intégral Download PDF

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Publication number
WO2020258244A1
WO2020258244A1 PCT/CN2019/093669 CN2019093669W WO2020258244A1 WO 2020258244 A1 WO2020258244 A1 WO 2020258244A1 CN 2019093669 W CN2019093669 W CN 2019093669W WO 2020258244 A1 WO2020258244 A1 WO 2020258244A1
Authority
WO
WIPO (PCT)
Prior art keywords
polishing
integral impeller
motor
hole
mounting plate
Prior art date
Application number
PCT/CN2019/093669
Other languages
English (en)
Chinese (zh)
Inventor
张振宇
廖龙兴
孟凡宁
孟祥东
Original Assignee
大连理工大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 大连理工大学 filed Critical 大连理工大学
Priority to PCT/CN2019/093669 priority Critical patent/WO2020258244A1/fr
Publication of WO2020258244A1 publication Critical patent/WO2020258244A1/fr

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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
    • B24B31/00—Machines 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
    • B24B31/02—Machines 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 rotary barrels
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09G—POLISHING COMPOSITIONS; SKI WAXES
    • C09G1/00—Polishing compositions
    • C09G1/02—Polishing compositions containing abrasives or grinding agents

Definitions

  • the invention belongs to the technical field of mechanical processing, and specifically relates to a chemical mechanical polishing method and a polishing device for an integral impeller.
  • the impeller is a key component of power machinery such as turbine engines and turbochargers. Compared with the traditional combined impeller, the new generation of integral impeller is characterized by the design and manufacture of a single blade and the disc as a whole, making it compact and strong. The advantages of high, long service life and large thrust-to-weight ratio are widely used in aerospace, energy and power, ships and other fields.
  • precision forging manufacturing is a manufacturing process for mass production of impellers. This process has high requirements for equipment manufacturing accuracy, high abrasive manufacturing costs, and poor versatility. It is generally used for the blank manufacturing of impellers; multi-axis CNC milling processing is At present, the most commonly used machining method can realize the rough and fine machining of the impeller. However, this machining method requires high rigidity of the machine tool, cutting tool, and fixture. It is necessary to write a special processing program.
  • the main problems existing in the processing of integral impellers at home and abroad are: difficulty in manufacturing processing equipment, poor versatility, high cost, low processing efficiency, and poor overall processing quality.
  • the present invention provides a chemical mechanical polishing method and polishing device for an integral impeller.
  • the purpose of the present invention is to provide an integral impeller polishing method with good polishing quality and high efficiency, and an integral impeller polishing device with simple structure, low cost, convenient operation and good versatility.
  • a chemical mechanical polishing device for integral impeller including motor 1, bolt 2, mounting plate 3, positioning support plate 4, base 5, plastic foam 6, container 7, polishing liquid 8, coupling 9, connecting piece 10, integral Impeller 11, motor mounting through hole 12, mounting plate through hole 13, positioning support plate through hole 14, shaft end 15, bottom end surface 16, connector through hole 17 and bottom end surface groove 18;
  • the rotating shaft of the motor 1 passes through the mounting plate 3 downwards, and it is ensured that the motor 1 is vertically installed and fixed on the mounting plate 3; the rotating shaft of the motor 1 is connected to a shaft end of the connecting piece 10 through a coupling 9, and the connecting piece 10 The other end is connected and fixed with the large end face of the integral impeller;
  • the mounting plate 3 includes two rectangular steel plates with the same structure, which are fixed on the base 5 through a positioning support plate 4; there are four holes in the steel plate, two of which are motor mounting through holes 12 to realize the positioning of the motor 1. Installation: A mounting plate through hole 13 is provided at both ends of the steel plate to realize the positioning and installation of the steel plate;
  • the supporting and positioning plate 4 includes two "L"-shaped plates with the same structure.
  • the surface of one plate is provided with positioning and supporting plate through holes 14 to realize that the supporting and positioning plate 4 is fixed on the base 5;
  • the threaded holes matched with the through holes 13 of the mounting plate realize the installation of the mounting plate 3;
  • the connecting piece 10 includes a shaft end 15 and a bottom end surface 16, which are an integral structure.
  • the cross section of the connecting piece 10 is an "inverted T" shape; the bottom end surface of the connecting piece 10 is provided with no less than 3 connecting pieces on the periphery.
  • the holes 20 are matched respectively;
  • the base 5 is provided with a concave cavity and threaded holes, wherein the diameter of the inscribed circle of the concave cavity is greater than or equal to the diameter of the circumscribed circle of the container 7, and the threaded hole matches the through hole 14 of the positioning support plate;
  • the inner surface of the container 7 has corrosion resistance, and the diameter of the inscribed circle of the container should be larger than the maximum outer diameter of the polished integral impeller;
  • the container is placed in the concave cavity of the base 5 and the gap between the two is filled with plastic foam 6.
  • a chemical mechanical polishing method for an integral impeller includes the following steps:
  • the abrasive includes one or more of alumina abrasive grains, silicon carbide abrasive grains, and boron carbide abrasive grains.
  • the abrasive grain size includes one or two of 1000 ⁇ m, 150 ⁇ m, and 45 ⁇ m. Mix of the above;
  • the polishing liquid includes an oxidant, a surfactant, a pH regulator and deionized water;
  • the oxidant includes a 65 wt% nitric acid solution and/or a 30 wt% hydrogen peroxide solution, which accounts for the volume of the polishing solution The ratio is 5-12%;
  • the surfactant is a 10 wt% nonylphenol polyoxyethylene ether solution, and its volume ratio in the polishing liquid is 0.1 ⁇ 0.5%;
  • the pH adjuster is 85 wt% phosphoric acid solution and/or 40 wt% hydrofluoric acid solution, adjust the polishing liquid pH to 0.5 ⁇ 3;
  • step 2) Slowly add the abrasive and chemical polishing liquid prepared in step 2) and step 3) to the container at the same time; after the abrasive and chemical polishing liquid are mixed, the integral impeller needs to be completely immersed, and the volume of the chemical polishing liquid and the abrasive The ratio is controlled at 1:1 ⁇ 2;
  • the beneficial effect of the present invention is that the present invention proposes a method for chemical mechanical polishing of an integral impeller.
  • the integral impeller is rotated in the polishing liquid under the drive of a motor.
  • chemical reagents react with various parts on the surface of the integral impeller, the surface material structure is corroded and softened.
  • the uneven parts on the surface of the integral impeller are scraped off to achieve high precision and high efficiency processing. It can be applied to precision polishing processing of integral impellers of various sizes; in addition, the invention also provides a device of the polishing method, which has simple structure, convenient manufacture, easy operation, stability and reliability, and low cost.
  • Figure 1 is a front view of the chemical mechanical polishing assembly of the integral impeller
  • Figure 2 is an oblique two-dimensional view of the chemical mechanical polishing assembly of the integral impeller
  • Figure 3 is a cross-sectional view of the connector parts
  • Figure 4 is a schematic diagram of the structure of integral impeller parts
  • Figure 5 is a curve diagram of the roughness detection result at a certain point of the integral impeller blade
  • the polishing device of the integral impeller includes: a motor 1, a bolt 2, a mounting plate 3, a supporting and positioning plate 4, a base 5, a plastic foam 6, a container 7, a coupling 9 and a connecting piece 10.
  • a plastic drum 7 with an inner diameter of ⁇ 540mm and an outer diameter of ⁇ 550mm is selected and placed in the circular cavity of the cast iron base 5.
  • the diameter of the circular cavity is ⁇ 570mm.
  • the gaps are filled with plastic foam 6, and the base 5 is also provided with threaded holes matching the through holes 14.
  • the mounting plate 3 includes two rectangular steel plates with the same structure, two motor mounting through holes 12 are provided in the middle of the steel plates, and a through hole 13 is provided at each end.
  • the supporting and positioning plate 4 includes two "L"-shaped plates with the same structure. Both ends of a horizontal plane of the plate are provided with a through hole 14, and the two ends of the vertical plane perpendicular to the surface are provided with a threaded hole.
  • the through holes 13 on the mounting board 3 match.
  • the connecting piece 10 includes a shaft end 15 and a bottom end surface 16.
  • the bottom end surface is provided with three through holes 17 and a circular groove 18; the outer diameter of the shaft end 15 is the same as the shaft of the motor 1, the circular groove 18 and The relevant size of the through hole 17 matches the circular boss 19 and the threaded hole 20 on the large end face 21 of the integral impeller 11.
  • the components in the polishing solution are specifically: the volume fraction of the 65% by weight nitric acid solution in the polishing solution is 4%, and the 30% by weight hydrogen peroxide solution in the polishing solution.
  • the volume fraction of the nonylphenol polyoxyethylene ether solution with a mass fraction of 5% and a mass fraction of 10 wt% in the polishing liquid is 0.5%, the remaining volume ratio is deionized water, and the mass fraction is 85 wt%
  • the phosphoric acid solution adjusts the pH of the polishing liquid solution to 1.2.
  • step 2) Slowly add step 2) and step 3) the prepared abrasive and chemical polishing liquid to the container 7 until the mixed polishing liquid 8 completely immerses the integral impeller 11; the volume ratio of the abrasive to the chemical polishing liquid is 4 : 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Dispositif de polissage mécano-chimique pour un impulseur intégral. Le dispositif comprend un moteur électrique (1), un boulon (2), un couplage (9), une plaque de montage (3), une plaque de support de positionnement (4), une pièce de raccordement (10), une base (5), un contenant (7) et un plastique alvéolaire (6), le moteur électrique (1) est monté sur la base (5) au moyen de la plaque de montage (3) et de la plaque de support de positionnement (4), et un arbre rotatif du moteur électrique (1) est relié à un impulseur intégral (11) au moyen du couplage (9) et de la pièce de raccordement (10). Le dispositif de polissage est de structure simple, facile à fabriquer, pratique à utiliser, stable et fiable, et à faible coût. L'invention concerne en outre un procédé de polissage mécano-chimique pour un impulseur intégral, dans lequel des réactifs chimiques et des abrasifs du procédé sont mélangés pour former un liquide de polissage; l'ensemble de l'impulseur intégral est immergé dans le liquide de polissage et est entraîné par le moteur électrique en rotation; sous l'action combinée de l'adoucissement chimique de la corrosion du liquide de polissage et de l'élimination par raclage mécanique, le polissage précis de diverses parties d'une surface d'impulseur intégral est réalisé. Le procédé de polissage présente une polyvalence élevée, une efficacité de polissage élevée et une bonne qualité de polissage.
PCT/CN2019/093669 2019-06-28 2019-06-28 Procédé de polissage mécano-chimique et dispositif de polissage pour impulseur intégral WO2020258244A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/093669 WO2020258244A1 (fr) 2019-06-28 2019-06-28 Procédé de polissage mécano-chimique et dispositif de polissage pour impulseur intégral

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/093669 WO2020258244A1 (fr) 2019-06-28 2019-06-28 Procédé de polissage mécano-chimique et dispositif de polissage pour impulseur intégral

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WO2020258244A1 true WO2020258244A1 (fr) 2020-12-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002046056A (ja) * 2000-08-02 2002-02-12 Kia Motors Corp 加工物からバリを除去する装置
CN101092552A (zh) * 2006-06-23 2007-12-26 天津晶岭电子材料科技有限公司 一种用于硅晶片的研磨液
WO2010023226A1 (fr) * 2008-08-29 2010-03-04 Snecma Procede de polissage de disques munis d'un aubage pour turbomachine et dispositif de polissage
CN103894933A (zh) * 2012-12-25 2014-07-02 大连深蓝泵业有限公司 叶轮流道水力抛光装置
CN105650024A (zh) * 2016-02-19 2016-06-08 太仓市磁力驱动泵有限公司 高效磁力泵叶轮及采用流体研磨抛光叶轮流道的方法
CN106826529A (zh) * 2017-03-03 2017-06-13 浙江佳力科技股份有限公司 离心泵叶轮水力打磨装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002046056A (ja) * 2000-08-02 2002-02-12 Kia Motors Corp 加工物からバリを除去する装置
CN101092552A (zh) * 2006-06-23 2007-12-26 天津晶岭电子材料科技有限公司 一种用于硅晶片的研磨液
WO2010023226A1 (fr) * 2008-08-29 2010-03-04 Snecma Procede de polissage de disques munis d'un aubage pour turbomachine et dispositif de polissage
CN103894933A (zh) * 2012-12-25 2014-07-02 大连深蓝泵业有限公司 叶轮流道水力抛光装置
CN105650024A (zh) * 2016-02-19 2016-06-08 太仓市磁力驱动泵有限公司 高效磁力泵叶轮及采用流体研磨抛光叶轮流道的方法
CN106826529A (zh) * 2017-03-03 2017-06-13 浙江佳力科技股份有限公司 离心泵叶轮水力打磨装置

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