Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation process of high-strength corrosion-resistant metal profile for rail transit

A technology for metal profiles and rail transit, which is applied to the device and coating of the surface coating liquid, which can solve the problems of high chemical activity of magnesium, poor corrosion resistance of magnesium alloys, and low equilibrium point

Inactive Publication Date: 2022-01-28
JIANGSU SANCES STEEL PIPE CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high chemical activity of magnesium and the low equilibrium point, the magnesium oxide film formed on the surface of the magnesium alloy exposed to atmospheric conditions is relatively loose, and its compactness is only 0.79, which makes the corrosion resistance of the magnesium alloy poor.

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

[0026] A preparation process for a high-strength corrosion-resistant metal profile for rail transit, the preparation process for the high-strength corrosion-resistant metal profile for rail transit is:

[0027] (1) The magnesium alloy ingot is mechanically crushed to 150 μm, the magnesium alloy and molybdenum are mixed and placed in a ball mill for ball milling for 110 hours, the rotation speed is 200 rpm, and the ball-to-material ratio is 30:1 to obtain metal particles;

[0028] (2) Immediately after ball milling, transfer the metal particles to the mold, raise the temperature to 400°C, and keep the temperature for 1 hour; then cold press under the condition of 10MPa, and hold the pressure for 10 minutes, and keep the temperature under ultrasonic conditions at 400°C, Insulate for 5 minutes, place for 4 hours and then perform aging. The aging temperature is 200°C, the holding time is 13 hours, cool to room temperature, and demould to obtain the metal profile matrix;

[0029] (...

Embodiment 2

[0037] A preparation process for a high-strength corrosion-resistant metal profile for rail transit, the preparation process for the high-strength corrosion-resistant metal profile for rail transit is:

[0038] (1) The magnesium alloy ingot is mechanically crushed to 150 μm, the magnesium alloy and molybdenum are mixed and placed in a ball mill for ball milling for 90 hours at a speed of 400 rpm and a ball-to-material ratio of 30:1 to obtain metal particles;

[0039] (2) Immediately after ball milling, transfer the metal particles to the mold, raise the temperature to 400°C, and keep it warm for 1 hour; then cold press it under the condition of 15MPa, keep the pressure for 5 minutes, and keep it warm under ultrasonic conditions, the temperature is 550°C, Insulate for 10 minutes, place for 4 hours and then perform aging. The aging temperature is 200°C, the holding time is 15 hours, cool to room temperature, and demould to obtain the metal profile matrix;

[0040] (3) Spraying a...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation process of a high-strength corrosion-resistant metal profile for rail transit, which relates to the technical field of metal profiles for rail transit. When the high-strength corrosion-resistant metal profile for rail transit is prepared, a metal profile base body is prepared through ball milling, heat preservation, cold pressing and ultrasonic heat preservation, and a self-made super-hydrophobic film layer is sprayed on the metal profile base body; while the strength of the metal profile is enhanced, the bonding force between the metal profile base body and the self-made super-hydrophobic film layer is also enhanced; the self-made super-hydrophobic film layer material is composed of acrylic acid, polydopamine and hydroxyapatite, and can effectively prevent humid air, an erosion solution and other corrosive media from making direct contact with a magnesium alloy base body, so that the corrosion resistance of the magnesium alloy is improved.

Description

technical field [0001] The invention relates to the technical field of metal profiles for rail transit, in particular to a preparation process for high-strength and corrosion-resistant metal profiles for rail traffic. Background technique [0002] As the lightest engineering metal material, magnesium alloy has excellent properties such as high damping, good thermal conductivity, high specific stiffness and specific strength, easy cutting, high recycling rate, and anti-electromagnetic interference. Therefore, magnesium-aluminum alloy has great application prospects and use value in aerospace, automobile industry, medical equipment, electronic communication and other fields, and has become one of the development directions of new materials in the future; [0003] Due to the high chemical activity of magnesium and the low equilibrium point, the magnesium oxide film formed on the surface of magnesium alloy exposed to atmospheric conditions is relatively loose, and its density 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): C22C1/04C22C23/02B05D7/14B05D7/24
CPCC22C1/0408C22C23/02B05D7/14B05D7/24
Inventor 张政
Owner JIANGSU SANCES STEEL PIPE CO LTD
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