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

Preparation of pre-coated aluminium alloy articles

A technology for aluminum alloy parts and aluminum alloys, which is applied to coatings, surface reaction electrolytic coatings, and devices for coating liquids on surfaces, etc., which can solve problems such as dirty and difficult operation, save costs, and improve corrosion resistance. , technology and cost superior effect

Inactive Publication Date: 2011-04-20
MCDONNELL DOUGLAS
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also dirty and difficult to handle and may require expensive cleaning of the area around the fastener with a caustic chemical solution

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
  • Preparation of pre-coated aluminium alloy articles
  • Preparation of pre-coated aluminium alloy articles
  • Preparation of pre-coated aluminium alloy articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] As shown in Figure 1, an untreated (ie uncoated and annealed) part is first provided. Preferred embodiments of the present invention relate to the preparation of fasteners such as rivets, and the discussion below focuses on these components. The use of the present invention is not limited to fasteners and rivets, rather it has broader application. However its use on fasteners offers certain advantages which will be discussed.

[0022] A rivet 40 is provided, number 20, for use with the present invention on a rivet, fastener or other component machined to its conventional shape and size. FIGS. 4-6 illustrate the installation of a first workpiece 42 to a second workpiece 44 Three types of rivets 40 in intermediate stages, ie after having been mounted to the first and second workpieces but before upset. The rivet 40 in Figure 4 has a preformed nose 46 at one end, the rivet 40' in Figure 5 is an upset rivet without a preformed nose at each end, and the rivet 40" in Figure...

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

PropertyMeasurementUnit
shear strengthaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

An aluminum-alloy article such as a fastener or rivet is prepared by providing an aluminum-alloy article precursor that is not in its final heat-treated state, and in one form is in its solution treated / annealed state. A curable organic coating material is also provided. The method includes anodizing the article precursor, preferably in chromic acid solution and without chemical sealing during anodizing, applying the organic coating material to the aluminum-alloy article precursor, and precipitation heat-treating the coated aluminum article precursor to its final heat-treated state, thereby simultaneously curing the organic coating. If the aluminum alloy temper is of the naturally aging type, it is optionally lightly deformed prior to precipitation treatment aging. The approach may also be applied to articles that are not solution treated / annealed and aged, by first overly deforming the article precursor so that the curing treatment of the coating also partially anneals the article precursor to the final desired deformation state.

Description

[0001] This application is a divisional application, the application number of its parent application is 200410094182.X, the filing date is May 1, 1996, and the title of the invention is "preparation of pre-coated aluminum alloy parts". technical field [0002] The present invention relates to the preparation of coated aluminum alloy parts, more precisely, to the preparation of coated aluminum rivets. Background technique [0003] Fasteners are used to mechanically connect different structural elements and assemblies of an aircraft, for example, a large transport aircraft typically contains more than 1 million fasteners such as bolts, screws and rivets. Fasteners are made from strong alloys such as titanium alloys, steel and aluminum alloys. In some cases, fasteners are heat treated, such as by precipitation hardening aging, in order to achieve as high a strength as possible for that particular alloy, as well as other desired properties. Heat treatment generally includes a ...

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 Patents(China)
IPC IPC(8): B05D3/00C25D21/18C22F1/04C21D9/00B21G3/18B05D7/00C25D11/18B05D3/02B21K1/58B05D7/14
CPCC25D21/18C22F1/04B05D2701/00B05D7/51B05D3/0254B05D2258/00C21D9/0093B05D7/14B21K1/58B05D2202/25C25D11/18
Inventor S·G·琴尔
Owner MCDONNELL DOUGLAS
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