Method for repairing and polishing ceramic part through laser
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A technology for ceramic parts, laser repair, applied in laser welding equipment, welding/welding/cutting items, manufacturing tools, etc. Completely eliminate problems such as deep pores and cracks, and achieve the effect of facilitating automated production, reducing impact, and repairing dimensional deviations
Active Publication Date: 2017-11-24
RAINBOW SOURCE LASER RSLASER
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[0004] However, due to the purpose of reducing surface roughness through micro-removal, polishing treatment cannot completely eliminate the existing deep pores and cracks on the surface, and cannot solve the problem of micro-insufficiency caused by part deformation or excessive molding shrinkage, and cannot increase the size of the part. Accuracy or Shape Accuracy
In order to achieve the ideal state of ceramic parts, it often requires a variety of repair processes and polishing treatments to cooperate. Multiple clamping and processing will significantly affect the yield, processing efficiency, and dimensional accuracy of the parts.
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Embodiment 1
[0044] Such as figure 1 , a method for laser repairing and polishing ceramic parts, specifically comprising the following steps:
[0045] S1 cleans the ceramic parts and assembles the ceramic parts to the three-dimensional mobile platform;
[0046] S2 as figure 2 , scanning the surface profile (1) of the ceramic part, comparing the scanned profile model with the standard model (2), dividing the etching area (3), polishing area (4) and sintering area of the ceramic part surface District (5);
[0047] S3 processing the etched area with an excimer laser device;
[0048] S4 performs preset powder feeding on the sintering area, and uses the long-wavelength laser of excimer laser equipment to perform sintering repair;
[0049] S5 rough polishing the sintering area by using excimer laser equipment;
[0050] S6 uses excimer laser equipment for overall polishing of the processing area;
[0051] S7 scans the surface roughness of the ceramic part, if the roughness does not meet th...
Embodiment 2
[0053] The invention discloses a method for repairing and polishing SiC ceramic bearings with Nd:YAG laser and ArF excimer laser, which mainly includes scanning analysis, etching treatment, powder sintering treatment, rough polishing and overall fine polishing of SiC ceramic bearings. links. Specifically, as figure 2 shown, including the following steps:
[0054] ①Scan the three-dimensional mobile platform of the cleaned SiC ceramic bearing, use the microscopic detection unit to scan the surface profile of the bearing (1), compare the scanned model with the three-dimensional model of the bearing (2), and determine the etching area on the bearing surface (3) , Polishing zone (4) and sintering zone (5).
[0055] ②Set the parameters of the ArF excimer laser equipment (6), turn on the inert gas protection device (7), and remove the deep diffusion cracks by micro-etching for the deep cracks or deep pores on the material surface of the etching area (3) or pores, and then further...
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Abstract
The invention discloses a method for repairing and polishing ceramic parts through laser. The method comprises the steps of S1, cleaning the ceramic part, and assembling the ceramic part to a three-dimensional moving platform; S2, scanning the surface contour of the ceramic part, comparing the scanned contour model with a standard model, and dividing the surface of the ceramic part into an etching region, a polishing region and a sintering region; S3, processing the etching region by using excimer laser equipment; S4, carrying out preset powder feeding on the sintering region, and carrying out sintering repair by using long-wavelength laser; S5, carrying out rough polishing on the sintering region; S6, carrying out overall polishing on the processing area; and S7, scanning the surface roughness of the ceramic part, executing the step S6 if the roughness does not meet the requirement, and completing the excimer laser polishing process if the roughness meets the requirement. The method has the advantages that the controllability is good, the automatic production can be realized conveniently, the precise processing of the micro-area can be realized, any curved surface and any part can be treated, the influence on a ceramic matrix is remarkably reduced, and the precision, the quality and the efficiency of part repairing and polishing are guaranteed.
Description
technical field [0001] The invention relates to the field of laser processing, in particular to laser repair and polishing of ceramic parts. Background technique [0002] Structural ceramics have excellent properties such as high temperature resistance, wear resistance, corrosion resistance, oxidation resistance, and high strength. They are widely used in aerospace, machinery, electronics, energy, chemical and other fields. They are the ends of aircraft burner components and intercontinental missiles. , bearings, balls, mechanical seal components, molds and other important materials. However, the characteristics of high hardness and high brittleness of ceramics make its molding and processing difficult, and it is easy to produce insufficient surface size and surface defects such as micro-cracks, pores, and micro-area spalling. During use, micro-plastic deformation and micro-cracks may also be caused by wear or heating. , Seriously affect the surface quality and precision of...
Claims
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Application Information
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