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Hot galvanizing device and hot galvanizing method applicable to same

A technology of hot-dip galvanizing and heating chamber, applied in hot-dip galvanizing process, coating, metal material coating process, etc., can solve the problem of thick zinc layer thickness, reduce the thickness of zinc layer, increase fluidity, reduce effect of cooling

Active Publication Date: 2014-03-12
ZHEJIANG HUADA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When hot-dip galvanizing by the existing method, the thickness of the zinc layer is relatively thick, especially the thickness of the zinc layer at the edge of the steel strip is relatively thick

Method used

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  • Hot galvanizing device and hot galvanizing method applicable to same
  • Hot galvanizing device and hot galvanizing method applicable to same
  • Hot galvanizing device and hot galvanizing method applicable to same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one, see figure 1 , a hot-dip galvanizing device, including a heating furnace 1, a fan 2, an air knife 3 and a zinc pot 4.

[0024] A shield 12 is provided on the furnace wall 11 of the heating furnace. A heating chamber 13 is formed between the shield 12 and the furnace wall 11 of the heating furnace. The heating chamber 13 is a channel structure extending spirally along the circumference of the heating furnace 1 . The heating chamber 13 is provided with a heating chamber air inlet 131 and a heating chamber air outlet 132 . The heating chamber air inlet 131 and the heating chamber air outlet 132 are located at both ends of the heating chamber 13 in the longitudinal direction. The shield 12 is provided with a thermal insulation chamber 14 . The heat insulation chamber 14 is a channel structure extending spirally along the circumference of the heating furnace 1 . The heat insulation chamber 14 is located on the side of the heating chamber 13 away from the...

Embodiment 2

[0031] Embodiment two, see Figure 4 The difference from the first embodiment is that the sealing method between the heating chamber air outlet and the fan inlet is different. The specific sealing method is: the heating chamber air outlet 132 is provided with a flange 15 protruding from the surface of the shield 12 . The fan air inlet 21 is provided with an outer flange 23 . A sealing pipe 5 is provided between the air outlet 132 of the heating chamber and the air inlet 21 of the fan.

[0032] The sealing tube 5 includes a base 51 , an annular connecting groove 52 , a first sealing lip 53 and a second sealing lip 54 disposed on the base 51 . Both the base portion 51 and the connection groove 52 are compact bodies made of rubber material. A shroud sealing lip 55 is provided on the end surface of the outer side wall 521 of the connection groove. The shield sealing lip 55 is a sponge made of sponge material. A support bar 56 is disposed on a peripheral surface of the outer wa...

Embodiment 3

[0034] Embodiment three, see Figure 6 , the difference from the second embodiment is that the sealing lip of the shield part is not provided, but the flange 15 is directly sealed and fixed on the support bar 56 and the crimping fin 57 to realize the connection between the groove and the air outlet of the heating chamber 132 seals.

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Abstract

The invention relates to galvanizing equipment and a method. A hot galvanizing device comprises a heating furnace, an air knife and a fan for supplying air to the air knife; a protective cover is arranged on the furnace wall of the heating furnace; a heating chamber is formed between the protective cover and the furnace wall of the heating furnace; the heating chamber is provided with a heating-chamber air inlet and a heating-chamber air outlet; the fan is provided with a fan air inlet and a fan air outlet; the air knife is provided with an air-knife air inlet; the heating-chamber air outlet and the fan air inlet are butt-jointed together; and the fan air outlet and the air-knife air inlet are butt-jointed together. The hot galvanizing device and the method have the advantages that the thickness of a zinc layer can be effectively reduced, and the problem of thick zinc layer in hot galvanizing is solved.

Description

technical field [0001] The invention relates to galvanizing equipment and methods, in particular to a hot-dip galvanizing device and a hot-dip galvanizing method suitable for the device. Background technique [0002] A galvanizing method in the existing hot-dip galvanizing process is as follows: the original metal plate is degreased, annealed in a heating furnace, reduced, cooled, and the plate surface is covered with zinc liquid through a liquid zinc pot. When the original metal plate (usually strip steel) leaves the zinc pot naturally, the thickness of the zinc layer coated on the plate surface is too thick, which does not meet the requirements for use, and the cost is too high. For this reason, an air knife is used to blow off excess zinc liquid on the surface of the original metal plate to reduce the thickness of the zinc layer. A hot-dip galvanizing method is disclosed in the Chinese patent application No. 2010102545476, the publication date being December 15, 2012,...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/16
Inventor 刘毅朱玉田
Owner ZHEJIANG HUADA NEW MATERIAL
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