Method for repairing frame type composite material forming die through supersonic thermal spraying process

A technology of composite materials and forming molds, applied in the aviation field, can solve problems such as noise pollution, construction personnel and environmental interference, and dust generation, and achieve the effects of improved service life, good surface roughness, and small thermal deformation

Inactive Publication Date: 2019-10-25
GUANGLIAN AVIATION IND CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. During the implementation of thermal spraying process, dust will be generated, toxic metal vap

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 repairing frame type composite material forming die through supersonic thermal spraying process
  • Method for repairing frame type composite material forming die through supersonic thermal spraying process
  • Method for repairing frame type composite material forming die through supersonic thermal spraying process

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0021] Specific implementation mode 1: This implementation mode records a method for repairing a frame-type composite material forming mold by supersonic thermal spraying process, and the steps of the method are as follows:

[0022] Step 1: Pretreatment of the workpiece surface; removing the dirt on the workpiece surface;

[0023] Step 2: Preheat the pretreated workpiece; the preheating temperature is 60-120°C, and the preheating time is 1-2min (the purpose of preheating is to eliminate the moisture on the surface of the workpiece and improve the coating / substrate interface during spraying. to reduce the residual stress caused by the expansion difference between the base material and the coating material, so as to avoid the resulting cracking of the coating and improve the bonding strength between the coating and the base. The preheating temperature depends on the size, shape and material of the workpiece and the base Factors such as the coefficient of thermal expansion of the...

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 discloses a method for repairing a frame type composite material forming die through a supersonic thermal spraying process, and belongs to the technical field of aviation. The method comprises the following steps that the surface of a workpiece is pretreated; the pretreated workpiece is preheated at the temperature of 60-120 DEG C for 1-2min; the surface of the workpiece is sprayed;surface repair is carried out by using a nickel-base alloy spraying material, wherein when the spraying material is heated to a molten or semi-molten state, the spraying material is accelerated to beup to the speed of 1000-1400m/s to be sprayed to the working surface; laser detection is carried out; the sprayed profile is detected by using a laser tracker, detection data is compared with theoretical data to determine whether the workpiece is qualified, and workpiece coating polishing treatment in the next step is carried out on the qualified workpiece; the workpiece coating is polished; the profile is machined through a numerical control machine tool, the coating surface is polished after machining, and it is ensured that the polished profile finish degree Ra is 1.6-0.8. The frame type composite material forming die can meet the die precision requirements, using requirements and the like after being repaired by the method.

Description

technical field [0001] The invention relates to a method for repairing a frame-type composite material molding die, which belongs to the technical field of aviation. Background technique [0002] The manufacturing process of the frame-type composite material forming mold used in military or civil aircraft is complicated, the production cycle is long, and the processing cost is high. Composite products are produced as a single piece, and product changes are inevitable. The mold also often has factors such as bumps or wear during use, and the surface of the mold needs to be repaired. Improper repair measures will cause deformation such as warping, expansion and springback of the mold, which will affect the dimensional accuracy and surface accuracy of the product, and eventually lead to the scrapping of the product. Only new composite material molding molds can be redesigned and processed. This process greatly increases production cost and production cycle. Therefore, it is ...

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): B29C73/02B29C73/34B29C73/26
CPCB29C73/025B29C73/26B29C73/34
Inventor 杨守吉高歌孙超朱依帅王福壮朱清文杨欣旭李凯柴宇林
Owner GUANGLIAN AVIATION IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap