Hot-dip aluminium zinc alloy steel plate and its preparing process

A hot-dip aluminum and zinc alloy technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of short service life of hot-dip galvanized steel sheet, embrittlement of metal substrate, poor safety performance, etc. Achieve the effect of preventing embrittlement, avoiding strain, and low manufacturing cost

Inactive Publication Date: 2004-11-03
WUXI ZHONGCAI NEW MATERIAL
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hot-dip galvanized steel sheet with this structure has a short service life. If it is used under high temperature and corrosive conditions, the safety performance is poor, the metal matrix is ​​brittle, and it will cause strain due to stretching during use, and the surface is rough, not bright, not bright. smooth

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 aluminium zinc alloy steel plate and its preparing process
  • Hot-dip aluminium zinc alloy steel plate and its preparing process
  • Hot-dip aluminium zinc alloy steel plate and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw materials used in the embodiment of the present invention are all purchased from the market, and the equipment used are all conventional galvanizing units. The galvanizing unit includes an induction heating furnace, a solution degreasing tank, a continuous carbon furnace, a hot-dip coating unit, a skin pass machine, and a drying machine box.

[0030] Alloy production of the present invention: its composition ratio is calculated by weight percentage:

[0031] Take aluminum ingot 53, silicon 1.4, zinc ingot 45.6 and place it at 22.4m 3 Heating and melting in the induction heating furnace (pot), the induction heating furnace temperature is 680 ° C, uniform heating, melting time in the induction heating furnace is 15 days, and the solution temperature is 600 ° C for use.

[0032] The production process of the hot-dip aluminum-zinc alloy thin steel plate of the present invention is as follows: the cold-rolled steel plate is selected from SPCD, the width of the steel...

Embodiment 2

[0034] Alloy production of the present invention:

[0035] Take aluminum ingot 55, silicon 1.6, and the balance of zinc 43.4 and put it in a 22.4M3 induction heating furnace (pot) for melting. The temperature of the induction heating furnace is 680° C., and it is heated evenly. The melting time is 15 days, and the solution temperature is 550° C.

[0036] The production of hot-dip galvanized steel sheet of the present invention:

[0037] 1. Substrate steel selection: SPCD; steel coil width 1050mm thickness 0.20mm; electrochemical degreasing:; solution temperature: 60°C; solution weight percent concentration: 4%; electrochemical degreasing time (machine speed): 100-120 m / Minute;

[0038] 2. Heat treatment (preheating, rapid heating, rapid cooling, continuous annealing and reduction)

[0039] Preheating temperature: 400°C, preheating time (machine speed): 100-120 m / min;

[0040] Rapid heating temperature 730°C; rapid heating time (machine speed): 100-120m; rapid cooling (air ...

Embodiment 3

[0048] Embodiment three: the production of alloy of the present invention

[0049] Take aluminum ingot 56, zinc ingot 42.5, and silicon 1.5 and put them in a 22.4M3 induction heating furnace (pot) to melt, the temperature of the induction heating furnace is: 680°C, heat evenly, the melting time is: 15 days, and the solution temperature is: 600°C .

[0050] Product production of the present invention:

[0051] 1. Substrate steel selection: SPCD; steel coil width 1050mm, thickness 0.8mm; electrochemical degreasing: solution temperature: 70°C; solution weight percent concentration: 5%; electrochemical degreasing time (machine speed): 80-100 m / Minute

[0052] 2. Heat treatment (preheating, rapid heating, rapid cooling, continuous annealing and reduction)

[0053] Preheating temperature: 550°C, preheating time (machine speed): 80-100 m / min; rapid heating temperature 730°C; fast heating time (machine speed): 80-100 m / min; rapid cooling (air cooling): cooling Temperature: 600°C;...

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 present invention belongs to the field of steel plate coating technology. The hot Al-Zn plated steel plate is manufactured with cold rolled steel plate and through the steps of electrochemical defatting, heat treatment, hot plating Al-Zn solution on two sides of steel plate, blowing cooling, finishing, stoving and hydraulic shearing. The present invention has low cost and the plating process is completed in a conventional Zn plating machine. The present invention can prolong the service life of steel plate by 4-5 times, and makes steel plate capable of being used in high temperature and corrosive condition with less damage.

Description

Technical field: [0001] The invention relates to a hot-dip aluminum-zinc alloy steel plate and a manufacturing method thereof, which are used for steel structures in the construction industry and auto parts, etc., and belong to the technical field of steel coil coating composite materials. Background technique: [0002] Before the present invention is made, the steel plate material that needs to use such as steel structure and auto parts in construction industry, adopts as hot-dip galvanized thin steel plate usually. Hot-dip galvanized steel sheets mainly use cold-rolled sheets as the base material, which are subjected to electrochemical degreasing and water washing, and then undergo heat treatment and other processes, and then take zinc and put it in an induction heating furnace to melt into a zinc solution. The processed cold-rolled coil The steel strip passes through the galvanizing unit to evenly coat the zinc solution on its surface, and then passes through the skinning...

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): C23C2/12
Inventor 周元庆周明华刘岗
Owner WUXI ZHONGCAI NEW MATERIAL
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