Spraying method of small part

A technology of small parts and parts, which is applied in the field of spraying processing technology, can solve the problems that are difficult to meet the production needs and delivery of large batches of parts, affect the assembly and use performance of parts, and the uneven color and film thickness, so as to improve the quality of sprayed products, Ease of operation, and the effect of improving utilization and utilization

Inactive Publication Date: 2014-03-12
AVIC STANDARD PARTS MFG
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, when the surface treatment of fasteners and small hardware parts is applied, spraying or dipping is usually used to apply shielding coatings. Spraying is likely to cause thread size out-of-tolerance for small-sized bolts and screw fasteners , while using dip coating and centrifugal drying, it is easy to cause surface film laminar flow marks, knots, color and uneven film thickness
This traditional coating method is difficult to meet the production needs and delivery of large-volume parts, and the existing coating defects also affect the assembly and performance of parts

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
  • Spraying method of small part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] see figure 1 , a spraying method for small parts, comprising the steps of:

[0020] a. Clamping of parts: fix the parts on the matching socket fixture 1, and then place them on the tooling 2 of the round table top that can rotate freely;

[0021] b. One-time spraying: Spray one side of the part, the tooling rotates slowly at a speed of 2 revolutions per minute, and a small spray gun with a caliber of 0.3mm is used to spray at 15 00 In the direction of the included angle, the straight line distance is 10mm, and the compressed air pressure is 0.35Mpa for spraying. The spraying of parts is carried out by four times of diagonal spraying and one plane spraying;

[0022] c. Low-temperature baking: After spraying, move the jig together with the parts in parallel to a hot air device with low-temperature baking at a temperature of 20°C, pre-baking it for 25 minutes, and wait for the sprayed surface to dry;

[0023] d. Secondary spraying: After low-temperature baking, turn the ...

Embodiment 2

[0027] see figure 1 , a spraying method for small parts, comprising the steps of:

[0028] a. Clamping of parts: fix the parts on the matching socket fixture 1, and then place them on the tooling 2 of the round table top that can rotate freely;

[0029] b. One-time spraying: Spray one side of the part, the tooling rotates slowly at a speed of 23 rpm, and a small spray gun is used to spray at 30 0 In the direction of the included angle, the straight-line distance is 20mm, and the compressed air pressure is 0.4Mpa for spraying. The spraying of parts is carried out by four times of diagonal spraying and one plane spraying;

[0030] c. Low-temperature baking: After spraying, move the jig together with the parts in parallel to a hot air device with low-temperature baking at a temperature of 25°C, pre-baking it for 30 minutes, and wait for the sprayed surface to dry;

[0031] d. Secondary spraying: After low-temperature baking, turn the part over and spray it on the other unpainte...

Embodiment 3

[0035] see figure 1 , a spraying method for small parts, comprising the steps of:

[0036] a. Parts clamping: fix the parts on the matching parallel fixture, and then place them on the tooling 2 of the round table top that can rotate freely;

[0037] b. One-time spraying: Spray one side of the part, the tooling rotates slowly at a speed of 3 revolutions per minute, and a small spray gun is used to spray at 45 0 In the direction of the included angle, the straight line distance is 30mm, and the compressed air pressure is 0.5Mpa for spraying. The spraying of parts is carried out by four times of diagonal spraying and one plane spraying;

[0038] c. Low-temperature baking: After spraying, move the fixture together with the parts in parallel to a hot air device with low-temperature baking at a temperature of 30°C, pre-baking it for 35 minutes, and wait for the sprayed surface to dry;

[0039] d. Secondary spraying: After low-temperature baking, turn the part over and spray it on...

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 spraying method of a small part. The method comprises the steps of a, clamping the part; b, primary spraying: spraying one side of the part, enabling a tooling to rotate slowly at the speed of 2-3r/ min, adopting a small spray gun, and spraying along the direction of an included angle within the range of 150-450 degrees, at the interval of the straight-line distance of 10-30mm and under the compressed air pressure of 0.35-0.5MPa; c, low-temperature baking: after the spraying, transferring a fixture and the part in parallel into a hot air device with a function of low-temperature baking function, controlling the temperature to be 20-30 DEG C, and pre-baking the fixture and the part for 25-35min until the sprayed surface of the part is dried; d, secondary spraying: after low-temperature baking, overturning the part, spraying the other side of the part which is not sprayed according to the step b, and then carrying out low-temperature baking according to the step c; e, treating by curing. The spraying method of the small part has the characteristics of being high in spraying quality, material-saving, simple and convenient in processing and low in cost.

Description

technical field [0001] The invention belongs to the field of spraying processing technology, and in particular relates to a spraying method for small parts. Background technique [0002] Fasteners and small hardware parts used in aviation and aerospace fields are coated with shielding coatings, which can eliminate potential corrosion problems caused by different contact materials, reduce product use risks, and improve the assembly environment. In the prior art, when the surface treatment of fasteners and small hardware parts is applied, spraying or dipping is usually used to apply shielding coatings. Spraying is likely to cause thread size out-of-tolerance for small-sized bolts and screw fasteners , and when dipping and centrifugal drying are used, it is easy to cause surface film laminar flow marks, knots, color and uneven film thickness. This traditional coating method is difficult to meet the production needs and delivery of large-volume parts, and the existing coating d...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/38B05D3/02B05C13/02
Inventor 李训郭群刘洪萍程定宇金万军徐春江肖文英侯婧婧
Owner AVIC STANDARD PARTS MFG
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