A clamping device for preparing thermal barrier coatings by electron beam physical vapor deposition

A physical vapor deposition, thermal barrier coating technology, applied in coating, metal material coating process, ion implantation plating and other directions, can solve the problem of uncontrollable blade rotation speed, limited inclination angle, and inability to achieve blade body coating Thickness uniformity control and other issues, to achieve the effect of improving uniformity and strain tolerance, extending service life, improving preheating temperature and coating thickness uniformity

Active Publication Date: 2020-07-28
BEIHANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rotation of the blade is realized by the guidance of the gravity of the blade, and the rotation speed of the blade is uncontrollable, and the uniformity control of the coating thickness of the blade body cannot be realized; and the inclination angle of the blade is limited during the rotation, and it is impossible to control the blade edge and guide of the high-pressure turbine. A larger steam incident angle is formed on the edge plates on both sides of the blade to obtain a well-organized coating

Method used

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  • A clamping device for preparing thermal barrier coatings by electron beam physical vapor deposition
  • A clamping device for preparing thermal barrier coatings by electron beam physical vapor deposition
  • A clamping device for preparing thermal barrier coatings by electron beam physical vapor deposition

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Using this device, six high-pressure turbine blades are respectively installed on six workpiece holders 14, and sprayed by EB-PVD.

[0050] The rotation of the first main transmission shaft 15 drives the entire device to rotate, realizing the overall revolution; the rotation of the second main transmission shaft 16 drives the rotation of the main gear 1. After the rotation of the main gear 1, the rotation gear 2 and the driven shaft 6 rotate simultaneously, and the driven shaft 6 Drive the swing disc 7 to rotate, the swing rod 9 also tilts and rotates accordingly, so that the blades rotate and swing by themselves. Therefore, this device realizes the simultaneous preparation of 6 high-pressure turbine blades by EB-PVD, and realizes the 3-degree-of-freedom rotation of revolution, rotation, and free swing of the blades.

[0051] attached Figure 4 In order to observe the positions of the cross-sectional morphology of the turbine blade airfoil and edge plate coating, the a...

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Abstract

The invention discloses a clamping device for preparing a thermal barrier coating through electron beam physical vapor deposition. The clamping device comprises a revolution assembly, a rotation assembly, a supporting assembly and a swinging assembly. Through the technical scheme of the invention, it can be achieved that a blade workpiece conducts revolution and rotation stably and controllably and meanwhile can achieve swinging at a certain angle while revolution and rotation are conducted, accordingly, the preheating temperature of a complex-structure blade and the thickness uniformity of the coating are improved, deposited vapor multi-angle entering can be achieved advantageously, developed columnar crystal growing is facilitated, the uniformity and strain tolerance of the microstructure of the coating are improved, and the service life of the coating is prolonged.

Description

technical field [0001] The invention relates to a device for preparing thermal barrier coatings, in particular to a 3-degree-of-freedom tooling system for preparing thermal barrier coatings for aeroengine guide blades and high-pressure turbine blades by electron beam physical vapor deposition. Background technique [0002] Electron beam physical vapor deposition (EB-PVD) is a process in which a high-energy-density electron beam is used to heat the deposition material, evaporate it into a gas phase, and condense and deposit it on the substrate to form a coating. The preparation of thermal barrier coatings by EB-PVD is currently the mainstream technology for thermal protection of hot-end parts of aero-engines, especially for guide blades and high-pressure turbine blades. Compared with plasma sprayed thermal barrier coatings, EB-PVD thermal barrier coatings have many advantages, such as: EB-PVD coatings are denser and have better oxidation and thermal corrosion resistance; the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/50C23C14/30
CPCC23C14/30C23C14/505
Inventor 彭徽滕晓丹王博郭洪波宫声凯
Owner BEIHANG UNIV
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