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Electromagnetic assistant dip coating method and device

A hot-dip plating and electromagnetic technology, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of undiscovered coating grain bonding quality, etc., and meet the requirements of low zinc liquid temperature and electrode material problems Solve, combine tight effects

Inactive Publication Date: 2009-07-29
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are no patents or literature reports that can be used to control the quality of the coating grains and the substrate with electromagnetic technology.

Method used

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  • Electromagnetic assistant dip coating method and device
  • Electromagnetic assistant dip coating method and device
  • Electromagnetic assistant dip coating method and device

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Experimental program
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Effect test

Embodiment Construction

[0028] Such as figure 1 , The device as the above scheme mainly includes: electrode 3, electromagnetic coil 5, pulse power supply 6, speed sensor 11, wire 7, sinking roller 9, zinc crucible 10, etc. When working, the electrode 3 is inserted into the plating pool 8, and the pulse frequency is 0.1-100kHz. In the process of hot-dip galvanizing, the strip steel 1 exits the zinc crucible 10 from the molten zinc pool 8 after being reversed by the sinking roller 9, and a pulse electrode 3 is set in the molten pool below the liquid surface 2, with a total of 16 electrode heads. , placed in pairs and groups on both sides of the strip 1, and the electrodes are 0.05m away from the strip. The electrodes 3 are connected to a power source 6 through wires 7 . The power supply is 250kW, and the pulse frequency is 20-25kHz. In order to prevent the current short circuit between the adjacent opposite electrodes, between the electrode 3 and the zinc solution 8, and between the adjacent opposit...

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Abstract

The invention relates to a hot-dip plating device for pulse electromagnetic auxiliary plating. The device mainly includes a zinc crucible, a plating solution, a pulse power supply, a sinking roller, a pulse electrode connected to the pulse power supply and arranged in the immersion plating solution, and a pulse electrode also connected to the pulse power supply but arranged on the immersion plating solution. Electromagnetic coils, etc. Electrodes are multi-headed, with either the same-sex setting on the same side or the opposite-sex setting on the same side. The present invention relies on the pulsed dynamic electromagnetic field, that is, by applying the pulsed electromagnetic field at the coating formation position, and then applying a pulsed magnetic field to the plating solution before it is completely solidified, to carry out local electromagnetic stirring on the zinc melt near the coating layer of the hot-dip steel plate , refine the crystal of the hot-dip galvanized layer, improve the bonding force between the coating and the substrate and the density of the coating, so as to achieve the purpose of improving the coating quality of the hot-dip galvanized steel sheet. It has important application value in the field of strip or wire hot-dip galvanized (aluminum) , The prospect of promotion is broad.

Description

technical field [0001] The invention relates to a hot-dip plating method and a device, in particular to an electromagnetic-aided hot-dip plating method and a device. Background technique [0002] Hot-dip coating is a production technology for steel plate surface protection, which mainly requires the coating to be flat, dense, and tightly bonded to the strip steel substrate to achieve aesthetics, protection, and improve subsequent stamping performance. Defects such as coating peeling, powdering, cracking, and insufficient coating that often occur in actual production are essentially caused by poor bonding between the coating and the substrate during hot-dip plating and the low density of the coating itself, which directly affects product quality and subsequent stamping deformation. performance. This problem is usually controlled from the aspects of plating solution alloy composition, zinc crucible process parameters, substrate cleaning, and air knife, but the effect is still...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/00C23C2/24
Inventor 温宏权
Owner BAOSHAN IRON & STEEL CO LTD
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