Unlock instant, AI-driven research and patent intelligence for your innovation.

Hot-dip co-aluminized method for aluminum-copper alloy

An aluminum-copper alloy, hot-dip aluminized technology, applied in hot-dip plating process, metal material coating process, coating, etc., can solve problems such as processing difficulties and affecting the corrosion resistance of the aluminized layer, and reach the diffusion annealing temperature Low, enhanced binding ability, protective effect

Active Publication Date: 2018-08-17
CHANGZHOU UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was found that Fe in the infiltrated layer after diffusion annealing 2 Al 5 The brittleness of the phase is still very large, and a large number of holes are distributed on the surface of the sample, which will bring considerable difficulties to subsequent processing and affect the corrosion resistance of the aluminized layer.
The protective layer formed by the aluminized layer can play a good protective role before there is no physical damage, but under strong H 2 In S corrosion environment, a single aluminized protective layer also has certain risks, especially in electrolytic corrosion environments that require more effective electrochemical protection performance, and a single hot-dipped aluminized layer cannot meet this requirement

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
  • Hot-dip co-aluminized method for aluminum-copper alloy
  • Hot-dip co-aluminized method for aluminum-copper alloy
  • Hot-dip co-aluminized method for aluminum-copper alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) The composition of the alloy is set as: 99.0% Al, 1% Cu. Use an electronic scale with an accuracy of 1 / 10,000 to weigh the amount of aluminum block and copper sheet, wherein aluminum is 495g, copper is 5g, and the total weight is 500g. First, clean 495g of aluminum and put it in a crucible and heat it to 700°C to melt the aluminum liquid, and sprinkle a covering agent on the surface of the aluminum liquid, then wrap the copper sheet with aluminum foil and put it into the aluminum liquid, keep it warm for 30 minutes to obtain an alloy molten pool; Covering agent composition is 80% KCl, 10% NaCl, 10% Na 3 AlF 6 , need to be ground into powder before use.

[0024] (2) The cut steel sheet is first soaked in 15% NaOH solution at 80°C for 5 minutes to remove oil, washed with water for 1 minute, soaked in 10% HCl solution for 3 minutes at room temperature to remove rust, washed with water for 1 minute, then soaked in acetone for 3 minutes, and finally in Dry in a vacuum...

Embodiment 2

[0030](1) The composition of the alloy is set as: 99.0% Al, 1% Cu. Use an electronic scale with an accuracy of 1 / 10,000 to weigh the amount of aluminum block and copper sheet, wherein aluminum is 495g, copper is 5g, and the total weight is 500g. First, clean 495g of aluminum and put it in a crucible and heat it to 700°C to melt the aluminum liquid, and sprinkle a covering agent on the surface of the aluminum liquid, then wrap the copper sheet with aluminum foil and put it into the aluminum liquid, keep it warm for 30 minutes to obtain an alloy molten pool; Covering agent composition is 80% KCl, 10% NaCl, 10% Na 3 AlF 6 , need to be ground into powder before use.

[0031] (2) The cut steel sheet is first soaked in 20% NaOH solution at 70°C for 8 minutes to remove oil, washed with water for 1 minute, soaked in 15% HCl solution for 4 minutes at room temperature to remove rust, washed with water for 1 minute, then soaked in acetone for 2 minutes, and finally in Dry in a vacuum ...

Embodiment 3

[0037] (1) The composition of the alloy is set as: 99.0% Al, 1% Cu. Use an electronic scale with an accuracy of 1 / 10,000 to weigh the amount of aluminum block and copper sheet, wherein aluminum is 495g, copper is 5g, and the total weight is 500g. First, clean 495g of aluminum and put it in a crucible and heat it to 750°C to melt the aluminum liquid, and sprinkle a covering agent on the surface of the aluminum liquid, then wrap the copper sheet with aluminum foil and put it into the aluminum liquid, keep it warm for 30 minutes to obtain an alloy molten pool; Covering agent composition is 80% KCl, 10% NaCl, 10% Na 3 AlF 6 , need to be ground into powder before use.

[0038] (2) Soak the cut steel sheet in 25% NaOH solution at 90°C for 5 minutes to remove oil, wash in water for 1 minute, soak in 20% HCl solution for 3 minutes at room temperature to remove rust, wash in water for 1 minute, then soak in acetone for 3 minutes, and wash in water for 1 minute , and finally dried in...

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 relates to a hot-dip co-aluminized method for aluminum-copper alloy, which belongs to the technical field of hot-dip aluminizing of steel. The method disclosed by the invention comprisesthe following main steps: preparation of alloy melting pool, degreasing and derusting of steel surface, assisted plating of surface, hot-dip aluminum-copper plating and vacuum diffusion annealing. The obtained alloy cementation layer structure consists of a Fe2Al5 layer, a FeAl layer, a Fe2Al layer and an Alpha-Fe layer sequentially from the outside to the inside. The hot-dip co-aluminized methodfor aluminum-copper alloy which is disclosed by the invention is combined with the hot-dip process and the aluminizing diffusion process, product quality is increased by the cooperative corrosion-resistant effect of the aluminum-copper alloy, the plating cannot easily shed, holes of the cementation layer are reduced, diffusion annealing temperature is decreased, the original mechanical propertiesof steel can be effectively protected, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of hot-dip aluminizing, and in particular relates to a method for hot-dipping co-permeating aluminized copper alloys. Background technique [0002] Steel has good mechanical properties and low price, but due to long-term exposure to the external environment, it is extremely prone to corrosion, causing damage to steel products and failure, which has a serious impact on human production and life, causing huge economic losses, and even endangering people. s life. In order to prolong life and reduce economic losses, metal protection is very important. Hot-dip aluminum-coated steel sheets with excellent corrosion resistance, high quality and low price are generally favored. [0003] The hot-dip aluminum coating technology on the surface of steel is a method developed after hot-dip galvanizing. It is being gradually applied to fields such as petroleum, chemical industry, electric power, metallurgy, machinery, en...

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): C23C2/12C23C2/02C23C2/28
CPCC23C2/02C23C2/12C23C2/28
Inventor 彭浩平沈圣哲苏旭平王建华涂浩刘亚
Owner CHANGZHOU UNIV