PATENT CLAIM ANALYSIS

Application Number: 16026101
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-09
Patent Classification: ["427", "458000"]

Abstract:
Disclosed herein is an aging resistance coating film for a hub, sequentially comprising an aluminum alloy matrix, a silane conversion film, a high-gloss organic resin coating, a periodic variable alloy black chromium coating film and a transparent resin coating. In the coating film, the thickness of the black chromium coating film is increased and the blackness thereof is adjusted according to different content of C. The residual stress of the deposited metal layer is reduced, the problem of cracking during heating and rapid cooling of the coating film is solved, and the binding force between the coating film and the underlying high-gloss resin material is improved. Also disclosed herein is a method for forming an aging resistance coating film for a hub, comprising: (1) silane pretreatment, (2) spraying of high-gloss medium powder, (3) PVD coating, and (4) spraying of transparent powder.

Claim (Index 3):
The method for forming an aging resistance coating film for a hub according to  claim 2 , wherein step (1) of pretreating the surface comprises water washing, alkaline washing, water washing, acid washing, pure water washing, passivation, pure water washing, closing, pure water washing, pure water washing and drying, wherein a silane conversion film is obtained by the passivation;\n in step (2), the high-gloss medium powder is with a thickness of 80 to 150 \u03bcm, the spoke surface curing temperature is 220\u00b0 C., the curing time is 20 min, epoxy resin is preferred, and the hardness of the resin is preferably 2-3 H; the base powder may be black or gray; the T-G point is at 80-120\u00b0 C.; in step (3), the temperature of the coated workpiece is 80-150\u00b0 C., the flow rate of argon as working gas is 40-80 cc/min, the coating current for the C target and the chromium target is 15-30 A, and the voltage is more than or equal to 550 v and less than or equal to 800 v; the vacuum degree is (2-8)\u00d710 \u22123  Pa, the double target coating time is 15-40 s, the working gas is 99.999% argon, and the coating ambient humidity is less than or equal to 50%; according to the coating sequence, pure chromium is opened first for 3-7 seconds, then the double targets are opened 14-24 seconds at the same time, finally, pure chromium is opened 3-7 seconds for separate coating, the C and Cr content changes periodically, and a periodic variable alloy black chromium coating film is generated; in step (4), the pure acrylic transparent powder is sprayed with a thickness of 80-150 \u03bcm, the surface curing temperature of the hub is 175\u00b0 C., the curing time is 20 min, and the thicknesses of the surfaces A, B and C of the hub are not less than 80 \u03bcm.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 95.0
- Lexical Diversity: 2.10256
- Patent Class: 427.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14804685', '10420336', '13187734', '14126430', '11492800']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7745067321969037
- 35 USC 102 Novelty (BERT): 0.4964484933513345
- Combined Prediction Score: 0.7467009083123468
- Mean Citation Score: 176.009086
- Max Citation Score: 193.89264
- Similarity Product: 139.95281113443372

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test