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Surface grinding and polishing method for aviation organic transparent parts

A technology for transparent parts and parts, applied in the direction of using liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., to achieve the effect of reducing grinding and polishing processes, removing scratches and oxidation marks, and effectively polishing

Active Publication Date: 2017-09-22
BAIMTEC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a surface polishing method for aviation organic transparent parts with simple process, universal application, low cost and good effect in order to overcome the defects caused by the existing molding technology in the manufacture of aviation transparent parts

Method used

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  • Surface grinding and polishing method for aviation organic transparent parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A certain transparent porthole

[0024] The material used in this embodiment is polycarbonate. Draw a line on a 4mm thick aviation-grade polycarbonate sheet, cut the sheet with a hand saw and drill holes around it, and use a clamp to position the original sheet on the thermoforming mold tooling. Heat it in the oven to 138°C, hold the temperature for 2 hours, and then vacuum absorb the original plate on the forming surface of the tooling, and fix the holes with screws. After the temperature is controlled by the program, the oven door is opened, and the porthole part is naturally cooled, and the invalid area on the edge of the part is cut off with a hand saw.

[0025] The specific process of the surface polishing method is as follows:

[0026] Step 1. Grinding defects

[0027] Use 600# water sandpaper to roughen the surface wrinkles and sink marks of the part, then use 1200# water sandpaper to polish the sandpaper marks formed by 600# water sandpaper on th...

Embodiment 2

[0038] Example 2: A certain transparent porthole

[0039] The material used in this embodiment is polymethyl methacrylate, draw a line on the polymethyl methacrylate with a thickness of 2.5mm according to the required shape of the workpiece, cut the plate with a hand saw and drill holes around it, and use a clamp to The original sheet is positioned on the tooling of the thermoforming mold, heated in an oven to 115°C, and after 1.5 hours of constant temperature, the sheet is manually pressed to fit the sheet on the forming surface of the tooling, and the holes are fixed by screws. Open the door of the oven after the temperature is controlled by the program, and after natural cooling, use a hand saw to cut off the invalid area on the edge of the workpiece.

[0040] The specific process of the surface polishing method is as follows:

[0041] Step 1. Grinding defects

[0042] Use 600# water sandpaper to roughen the surface wrinkles and sink marks of the part, then use 1200# wate...

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Abstract

The invention provides a surface grinding and polishing method for an aviation organic transparent workpiece. The aviation organic transparent workpiece is made from polymethyl methacrylate or polycarbonate. According to the method, a manual grinding mode or a low-speed pneumatic grinding mode is adopted, and surface grinding and polishing of the workpiece are carried out through waterproof abrasive paper, a petal-shaped microporous polishing mat and a weak-acid aluminum oxide polishing solution, so that the defects of machining marks, forming wrinkle marks and the like on the surface of the workpiece are overcome; finally, surface treatment of the aviation organic transparent workpiece is completed through ultrasonic cleaning and plasma static removal. Compared with the prior art, the surface grinding and polishing method has the advantages of high efficiency, low cost and the like.

Description

technical field [0001] The invention relates to a surface lapping and polishing method for aviation organic transparent parts, belongs to the technical field of surface treatment, and aims at the problems of surface defect removal and translucent treatment of polymethyl methacrylate and polycarbonate aviation transparent parts. Background technique [0002] The rapid development of modern technology and industry has put forward higher requirements for the manufacturing and maintenance capabilities of general aviation. As an important structural and functional material on aircraft, the processing of organic transparent materials is crucial. The molding of aerospace organic transparent parts mostly adopts female / male mold thermoforming or injection molding. Due to the defects on the mold surface and flexible contact conditions, there will be a large number of defects such as wrinkles on the surface of the parts or the problem of gate removal. How to remove them? Obtaining goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00B08B3/12
CPCB08B3/12B24B1/00
Inventor 王韬颜悦吕杰厉蕾
Owner BAIMTEC MATERIAL CO LTD