Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for milling and repairing composite material by high-pressure abrasive particle water jet

A composite material and water jet technology, which is applied in the field of material processing, can solve the problems of unfavorable prepreg filling and curing repair, high heat, poor surface roughness, etc., to achieve close bonding, low roughness Ra, and repair The effect of the process

Pending Publication Date: 2020-08-14
HARBIN DONGAN ENGINE GRP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The common means of removing surface defects by mechanical methods include grinding wheel polishing, milling cutter milling, etc. The above methods can easily lead to different degrees of processing defects, such as delamination of substrate materials, poor surface roughness (high Ra value), and high heat generated by processing. and other defects; especially too high roughness is not conducive to subsequent prepreg filling and curing repair

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for milling and repairing composite material by high-pressure abrasive particle water jet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The implementation of high-pressure abrasive water jet repair composite material technology, the specific steps include:

[0021] (1) Clamping: Fix and clamp the part to ensure that the part fits with the positioning surface of the fixture. Select a position with good rigidity, easy support, and no interference with the water jet to press it through the pressure plate. Rubber pads need to be added at the pressed place to avoid Crushing the part substrate.

[0022] (2) Alignment: Alignment The surface jump of the plane to be processed is not greater than 0.10mm. This step can be carried out simultaneously with step (1).

[0023] (3) Tool setting: tool setting confirms the origin of the program and the starting point of the cutting tool;

[0024] (4) Parameter setting: According to the actual processing needs, set the feed F in the range of 2m / min to 6m / min, the pressure P in the range of 400bar to 1000bar, and the overlapping amount S in the range of 0.75mm to 1.5mm; T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of material processing, and particularly relates to a method for milling and repairing a composite material by high-pressure abrasive particle water jet. The technical route of the method comprises the steps of clamping; aligning; tool setting; parameter setting, wherein three key processing parameters of water flow pressure, feeding and overlap amountare set, the feeding F is in the range of 2 m / min-6 m / min, the pressure P is in the range of 400 bar-1000 bar, and the overlap amount S is in the range of 0.75 mm-1.5 mm; a tool feeding path is executed according to a turn-back path; and the abrasive particle flow rate is 0.45 kg / min, and the abrasive particle projection angle is 90 degree; milling, wherein after finishing the steps of aligning, fixing and setting parameters of a part, grinding processing is carried out according to the preset parameters; and dismounting, washing with water, drying by blowing and finally inspecting. Various disadvantages of traditional mechanical processing can be solved, lower roughness Ra can be obtained, the close combination of prepreg and a substrate is facilitated, and the best repairing effect is achieved.

Description

Technical field: [0001] The invention belongs to the technical field of material processing, and in particular relates to a method for milling and repairing composite materials by high-pressure abrasive particle water jets. Background technique: [0002] CFRP carbon fiber reinforced composite materials have the characteristics of high specific stiffness, specific strength, and good fatigue resistance, and are widely used in the main structures of aircraft, such as aircraft spars, wing ribs, flaps, central wing boxes, etc.; usually the repair of composite materials The methods include resin injection method, mechanical repair method, and cut-and-fill glue joint repair method. Among them, the cut-and-fill glue joint repair method can reduce the weight gain of parts, uniform stress distribution, and have little impact on the aerodynamic shape. It is a high-precision repair method and requires strict aerodynamic shape. Parts must be repaired in this way; surface defects need to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C73/26
CPCB29C73/26B29C2073/262B24C1/045
Inventor 刘洋聂必成黄帅徐逊李洪宇
Owner HARBIN DONGAN ENGINE GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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