Aluminum alloy sheet with excellent baking-paint curability

一种铝合金板、放热峰值的技术，应用在Al－Mg－Si系铝合金板领域，能够解决铝合金板高屈服强度、难以具有烘烤涂装硬化特性等问题

Inactive Publication Date: 2014-10-22
KOBE STEEL LTD
View PDF10 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in this patent document 3, it is also difficult to reduce the As yield strength of the aluminum alloy plate immediately after tempering treatment (manufacturing) to less than 135 MPa, after baking coating hardening (after applying 2% strain, 170°C×20 The yield strength after BH is close to 240MPa, or becomes a high yield strength above this
That is, it is difficult to have a bake-coat hardening characteristic (BH property) in which the difference between the yield strength after BH and the As yield strength is 120 MPa or more

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
  • Aluminum alloy sheet with excellent baking-paint curability
  • Aluminum alloy sheet with excellent baking-paint curability
  • Aluminum alloy sheet with excellent baking-paint curability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0106] Next, examples of the present invention will be described. Under the conditions of reheating treatment after solid solution and quenching, 6000 series aluminum alloy plates with different heights of exothermic peak heights A, B, and C in the DSC specified in the present invention were produced separately, and the quenching and tempering were evaluated respectively. BH property (coating bake hardening property) in a short period of time after low temperature. In addition, hemming workability, which is press formability and bending workability, was also evaluated.

[0107] The above classification was made as shown in Table 2, the reheating treatment conditions after the solution and quenching treatment, the heating temperature (°C) (referred to as the reaching temperature in Table 2), the holding time (hr), especially these heating holding The subsequent cooling conditions were changed variously to manufacture 6000-series aluminum alloy sheets having the compositions sh...

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
longitudinal tensile yield strengthaaaaaaaaaa
longitudinal tensile yield strengthaaaaaaaaaa
longitudinal tensile yield strengthaaaaaaaaaa
Login to view more

Abstract

This aluminum alloy sheet is a 6000-series aluminum alloy sheet of a specific composition which, after rolling, has undergone solution hardening and reheating as tempering treatments. The aluminum alloy sheet in differential scanning calorimetry gives a curve in which the exothermic-peak heights A, B, and C in respective specific temperature ranges have relationships within specific given ranges to thereby raise the increase in 0.2% proof stress through low-temperature short-time artificial age-hardening to 100 MPa or more.

Description

technical field [0001] The invention relates to an Al-Mg-Si series aluminum alloy plate. The aluminum alloy sheet in the present invention is a rolled sheet such as a hot-rolled sheet or a cold-rolled sheet. Aluminum alloy plate before treatment. In addition, in the following description, aluminum is also called Al. Background technique [0002] In recent years, there has been an increasing social demand for weight reduction of vehicles such as automobiles in consideration of the global environment and the like. In order to respond to this demand, as a material for automobile panels, especially large body panels (outer panels, inner panels) such as hoods, doors, and roofs, it replaces steel materials such as steel sheets, and has excellent formability and bake hardenability. The use of lighter aluminum alloys is increasing. [0003] Among them, as thin-walled and high-strength aluminum As the plate, an Al—Mg—Si based AA or JIS 6000 series (hereinafter also referred to 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 Applications(China)
IPC IPC(8): C22C21/02C22C21/06C22F1/00C22F1/05
CPCC22C21/06C22F1/05C22F1/00C22C21/02C22C21/08
Inventor 松本克史有贺康博宍户久郎
Owner KOBE STEEL 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