Check patentability & draft patents in minutes with Patsnap Eureka AI!

Hard anodic oxidation treatment method for cast aluminum alloy workpiece

A technology of hard anodizing and casting aluminum alloy, applied in the direction of anodizing, etc., can solve the problems of wear resistance and easy corrosion

Inactive Publication Date: 2014-03-26
CHANGSHU BAIKE AUTOMOBILE PARTS REMFG
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because cast aluminum alloy has high strength and can process complex shapes that other aluminum alloys are difficult to process, it is widely used in various industries. However, cast aluminum alloy also has some significant disadvantages, such as non-wear resistance, easy corrosion, etc.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A hard anodic oxidation treatment method for a cast aluminum alloy workpiece, comprising the steps of:

[0013] 1) Melt the aluminum-silicon cast aluminum alloy, and then pour it into the die-casting machine for die-casting to obtain the cast aluminum alloy workpiece;

[0014] 2) Heat-treat the cast aluminum alloy workpiece at 530°C for 13-15 hours;

[0015] 3) Perform hard anodizing treatment on the cast aluminum alloy workpiece after heat treatment, the hard anodizing treatment conditions are: sulfuric acid 150g / L, temperature 6°C, current density 5A / dm2, voltage 75V, The time is 1 hour; a hard anodized film with a thickness of 40 microns is formed on the surface of the cast aluminum alloy workpiece.

Embodiment 2

[0017] A hard anodic oxidation treatment method for a cast aluminum alloy workpiece, comprising the steps of:

[0018] 1) Melt the aluminum-silicon cast aluminum alloy, and then pour it into the die-casting machine for die-casting to obtain the cast aluminum alloy workpiece;

[0019] 2) Heat-treat the cast aluminum alloy workpiece at 500°C for 13-15 hours;

[0020] 3) Perform hard anodizing treatment on the cast aluminum alloy workpiece after heat treatment, the hard anodizing treatment conditions are: sulfuric acid 150g / L, temperature 6°C, current density 5A / dm2, voltage 75V, The time is 1 hour; a hard anodized film with a thickness of 40 microns is formed on the surface of the cast aluminum alloy workpiece.

Embodiment 3

[0022] A hard anodic oxidation treatment method for a cast aluminum alloy workpiece, comprising the steps of:

[0023] 1) Melt the aluminum-silicon cast aluminum alloy, and then pour it into the die-casting machine for die-casting to obtain the cast aluminum alloy workpiece;

[0024] 2) Heat-treat the cast aluminum alloy workpiece at 550°C for 13-15 hours;

[0025] 3) Perform hard anodizing treatment on the cast aluminum alloy workpiece after heat treatment, the hard anodizing treatment conditions are: sulfuric acid 150g / L, temperature 6°C, current density 5A / dm2, voltage 75V, The time is 1 hour; a hard anodized film with a thickness of 40 microns is formed on the surface of the cast aluminum alloy workpiece.

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 hard anodic oxidation treatment method for a cast aluminum alloy workpiece. The method comprises the following steps: 1) fusing a cast aluminum silicon alloy and then injecting the fused cast aluminum silicon alloy into a die-casting machine for die casting so as to obtain the cast aluminum alloy workpiece; 2) subjecting the cast aluminum alloy workpiece to heat treatment at a temperature of 500 to 550 DEG C for 13 to 15 hours; and 3) subjecting the cast aluminum alloy workpiece having undergone heat treatment to hard anodic oxidation, wherein hard anodic oxidation treatment conditions are that the concentration of sulfuric acid is 150 g / L, temperature is 6 DEG C, current density is 5 ampere per square decimeter, voltage is 75 V and treatment time is 1 hour, and a hard anodic oxidation film with thickness of 40 microns is formed on the surface of the cast aluminum alloy workpiece after hard anodic oxidation. The hard anodic oxidation treatment method for the cast aluminum alloy workpiece enables the hard anodic oxidation film to obtain good continuity and high hardness.

Description

technical field [0001] The invention relates to a hard anodic oxidation treatment method for cast aluminum alloy workpieces. Background technique [0002] Since cast aluminum alloy has high strength and can process complex shapes that other aluminum alloys are difficult to process, it has been widely used in various industries. However, cast aluminum alloy also has some significant disadvantages, such as non-wear resistance and easy corrosion. Therefore, in order to improve the performance of the surface of the cast aluminum alloy, it is necessary to carry out surface treatment on the cast aluminum alloy. Contents of the invention [0003] The object of the present invention is to provide a hard anodic oxidation treatment method for cast aluminum alloy workpieces, which can achieve the effects of good continuity and high hardness of the hard anodic oxide film. [0004] In order to achieve the above object, the technical solution of the present invention is to design a har...

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): C25D11/08
Inventor 滕国平
Owner CHANGSHU BAIKE AUTOMOBILE PARTS REMFG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com