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

Method for reducing hot galvanizing zinc vapor

A zinc vapor, hot-dip galvanizing technology, applied in hot-dip plating process, coating, metal material coating process, etc., to reduce the degree of pollution, improve product surface quality, and reduce the amount of zinc evaporation

Active Publication Date: 2020-07-10
MAANSHAN IRON & STEEL CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing technology is to deal with the existing problems after zinc evaporation, and then how to reduce the adverse consequences of zinc and its products, and prevent the adverse effects from being limited

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
  • Method for reducing hot galvanizing zinc vapor
  • Method for reducing hot galvanizing zinc vapor
  • Method for reducing hot galvanizing zinc vapor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, the first particle adding device is used, and the metal particles are aluminum particles. The aluminum particles are scattered into the zinc liquid in the closed cavity of the zinc liquid through the particle adding device, and the aluminum content in the zinc pot is controlled not to be higher than 0.3%. On the surface of the zinc nose, due to the formation of iron-aluminum compounds, the aluminum content in the surface zinc liquid is not high. higher than 0.8%. Specifically, the particles are stored in the particle storage tank 1, sent to the metal flexible connection pipe through the particle delivery pipeline, and then transported into the swing tube 3 with a trumpet-shaped mouth, and then guided to the zinc liquid surface by the outlet of the swing tube. The swing tube is reciprocated by motors on both sides relying on corresponding guide wheels and traction wire ropes. Due to the periodic swing of the swing tube, the added particles are relati...

Embodiment 2

[0047] This embodiment adopts the second particle adding device, and the metal particles are aluminum particles wrapped in iron foil. Through the particle adding device, the aluminum particles wrapped in iron foil are scattered into the zinc liquid in the closed cavity of the zinc liquid, and the aluminum content in the zinc pot is controlled not to be higher than 0.3%. On the surface of the zinc nose, due to the formation of iron-aluminum compounds, the surface zinc liquid The aluminum content is not higher than 0.8%. Iron foil is a very thin wrapping layer. The iron in the iron foil is mainly used to quickly form iron-aluminum compounds with aluminum on the surface of the zinc liquid, floating on the surface of the zinc liquid, and isolating the volatilization of zinc vapor. Specifically, the particles are stored in the particle storage tank, sent to the particle distributor through the particle delivery pipe, and then the particles are dispersed into the grooves of the dire...

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 method for reducing hot galvanizing zinc vapor. The method comprises the steps of adding metal particles into a zinc liquid in a zinc liquid closed cavity, and reacting the metal particles with an iron in the zinc liquid to form a metal compound isolation layer floating on the surface of the zinc liquid so as to reduce zinc evaporation. According to the method for reducing hot galvanizing zinc vapor, the particles are added on the surface of the zinc liquid in the closed cavity where steel strips enter the zinc liquid in the continuous hot galvanizing production line,the compound is formed after reaction of the particles, and the compound floats on the surface of the zinc liquid, so that the surface of the zinc liquid is isolated, and the zinc is not prone to evaporating.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of cold-rolled steel sheets, and in particular relates to a method for reducing hot-dip galvanizing zinc vapor. Background technique [0002] Cold-rolled steel sheets sometimes require surface treatment before use. Surface galvanizing is a commonly used method, and galvanizing is divided into electric galvanizing and hot-dip galvanizing. In particular, the production volume of continuous hot-dip galvanizing is increasing, mainly because the annealing and surface treatment of the steel plate after cold rolling to the required thickness are completed in one production line. [0003] The continuous hot-dip galvanizing production line for cold-rolled sheets used to mainly produce carbon non-alloy low-strength cold-rolled steel coils. After annealing, the cold-rolled steel coil has a slight surface oxidation, the oxide is easily reduced, and can be directly hot-dip galvanized. Under this c...

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): C23C2/06C23C2/40
CPCC23C2/003C23C2/06C23C2/40
Inventor 裴英豪王茹玉沈新玉朱涛刘茂林夏雪兰张四方
Owner MAANSHAN IRON & STEEL CO LTD