Detection and evaluation method for abradability of seal coating
A sealing coating and evaluation method technology, applied in the field of aero-engines, can solve problems such as failure of sealing effect, difficulty in research and performance evaluation, lack of test methods and effective evaluation criteria, etc., to reduce repair rate and improve quality Level of control, the effect of enhancing the assessment of overall performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0107] 1. Preparation of coating samples
[0108] 1) Coating sample size
[0109] The coating sample material is selected from the base material used in actual working conditions. The sample size is 76×40×4mm (length×width×thickness), and a sealing coating with a thickness of 1.5mm to 3.0mm is sprayed on it.
[0110] 2) Surface state of coating sample
[0111] The surface state of the coating sample has an influence on the test results. This effect is usually related to one or more of the following factors:
[0112] —— surface roughness of sample
[0113] - introduction of pollutants
[0114] The following recommendations will minimize the impact of these factors.
[0115] The surface state of the coating sample is quantified by the average roughness, and it is manually ground on each number of sandpaper from coarse to fine. Under various test conditions, the average surface roughness Ra of the coating sample should be less than 5 μm. The thickness of the finished coatin...
Embodiment 1
[0188] In this embodiment, it is used for the detection and evaluation method of the scraping performance of the sealing coating, and the specific steps are as follows:
[0189] Step 1: Degrease the surface of the substrate of the coated test piece, and use acetone or gasoline to wipe the sprayed area of the part to remove oil and debris;
[0190] Step 2: Roughen the surface of the base material of the coating test piece, use a press-in type sand blower, and treat the area to be sprayed with 40 mesh white corundum sand, and the gas pressure is 0.2MPa;
[0191] Step 3: Plasma spray the NiAl bottom layer on the part to be sprayed. The thickness of the NiAl bottom layer is 0.1mm to 0.2mm. The chemical composition of the NiAl coating is 95wt% Ni and 5wt% Al. The specific process parameters are: the particle size of NiAl powder is 50μm ~80μm, hydrogen flow rate 15SCFH, argon flow rate 60SCFH, powder feeding rate 40g / min, spraying distance 110mm;
[0192] Step 4: Plasma spray the...
Embodiment 2
[0198] In this embodiment, it is used for the detection and evaluation method of the scraping performance of the sealing coating, and the specific steps are as follows:
[0199] Step 1: Degrease the surface of the substrate of the coated test piece, and use acetone or gasoline to wipe the sprayed area of the part to remove oil and debris;
[0200] Step 2: Roughen the surface of the base material of the coating test piece, use a press-in type sand blower, and treat the area to be sprayed with 40 mesh white corundum sand, and the gas pressure is 0.2MPa;
[0201] Step 3: Plasma spray the NiAl bottom layer on the part to be sprayed. The thickness of the NiAl bottom layer is 0.1mm to 0.2mm. The chemical composition of the NiAl coating is 95wt% Ni and 5wt% Al. The specific process parameters are: the particle size of NiAl powder is 50μm ~80μm, hydrogen flow rate 15SCFH, argon flow rate 60SCFH, powder feeding rate 40g / min, spraying distance 110mm;
[0202] Step 4: Plasma spray the...
PUM
Property | Measurement | Unit |
---|---|---|
thickness | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com