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A hot-dip galvanizing bath and hot-dip galvanizing process

A hot-dip galvanizing and hot-dipping technology, applied in hot-dip plating process, metal material coating process, coating and other directions, to achieve the effect of formula optimization, reducing surface defects and reducing the amount of zinc slag

Active Publication Date: 2019-04-23
杭州龙耀电力配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a hot-dip galvanizing bath used in the hot-dip galvanizing process, which solves the problem that zinc dross is rolled up by water flow and adheres to the surface of steel components to form a hot-dip galvanizing bath in the existing hot-dip galvanizing process. The problem of surface defects of zinc steel components has the advantage of reducing the possibility of zinc slag being rolled up by water flow, thereby reducing the surface defects of steel components

Method used

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  • A hot-dip galvanizing bath and hot-dip galvanizing process
  • A hot-dip galvanizing bath and hot-dip galvanizing process
  • A hot-dip galvanizing bath and hot-dip galvanizing process

Examples

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Effect test

Embodiment 1

[0039] Embodiment 1: a kind of hot-dip bath for hot-dip galvanizing process, in conjunction with figure 1 with figure 2 , including an active pool 1, a connection part 2 and a sedimentation tank 3 arranged in sequence from top to bottom, and the active pool 1 and the sedimentation tank 3 are cuboids. The connecting part 2 is arranged vertically and connects the middle part of the active pool 1 and the sedimentation tank 3. The bottom of the active pool 1 is a receiving part 4, and the receiving part 4 continuously descends from both sides of the active pool 1 to the connecting part 2.

[0040] combine image 3 with Figure 4 , The receiving portion 4 is provided with a plurality of first receiving cavities 5 for receiving zinc slag. The first receiving cavity 5 is a cylindrical cavity, the axial direction of the first receiving cavity 5 is arranged along the inclined direction of the receiving part 4, and one end close to the connecting part 2 in the axial direction is ope...

Embodiment 2

[0042] Embodiment 2: a kind of hot-dip bath for hot-dip galvanizing process, contrast Figure 5 and Image 6 , the difference from Embodiment 1 is that the cross-sections of the first receiving cavity 5 and the second receiving cavity 6 are both elliptical arcs, and the elliptical arc is larger than a semi-ellipse, and the short distance between the first receiving cavity 5 and the second receiving cavity 6 The axis is perpendicular to the receiving part 4 , the long axis is parallel to the receiving part 4 , and the opening is located directly above the first receiving cavity 5 .

Embodiment 3

[0043] Embodiment 3: a kind of hot-dip galvanizing process, comprises the steps:

[0044] S1: Put steel components in an acid pool to remove surface rust, and rinse in water to remove acid;

[0045] S2: Transfer the steel components to the fluxing solution in the fluxing bath, soak for 10-120 minutes at 65-68°C, and adjust the soaking time according to the amount of rust;

[0046] S3: Transfer the steel member to the top of the hot-dip bath in Example 2, control the temperature in the hot-dip bath to 440°C, remove the scum in the hot-dip bath with a slag scoop, and put the steel member into the hot-dip bath Hot-dip in the molten zinc bath for 30-200s (adjust the time according to the required thickness), and at the same time turn on the fan to blow off the smoke above the hot-dip pool, then take the steel member out of the hot-dip pool and remove it by tapping Unformed zinc droplets on the surface of steel components;

[0047] S4: Put the steel components into the cooling po...

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Abstract

The invention discloses a hot dipping pool for a hot galvanizing technology and the hot galvanizing technology. The hot dipping pool is internally provided with an adapting part used for adapting cadmia. The adapting part is provided with a plurality of first adapting cavities used for adapting the cadmia. The sections, perpendicular to the direction of the adapting part, of the first adapting cavities are of arch shapes. Openings are formed in the first adapting cavities. The centers of circles of curvature circles of the first adapting cavities at openings are located on the sides, facing the interior of the first adapting cavities, of the first adapting cavities. The hot galvanizing technology comprises the following steps of pickling, rinsing, assistant plating, heat plating, cooling and passivating, and the hot galvanizing technology has the advantages that surface defects of steel components caused by the cadmia are reduced.

Description

technical field [0001] The invention relates to the technical field of steel processing, in particular to a hot-dip galvanizing bath and a hot-dip galvanizing process. Background technique [0002] Hot-dip galvanizing, also called hot-dip galvanizing and hot-dip galvanizing, is an effective metal anti-corrosion method, mainly used in metal structure facilities in various industries. It is to immerse the steel parts after derusting in the molten zinc solution, so that the surface of the steel components will be attached with a zinc layer, so as to achieve the purpose of anticorrosion. [0003] In the hot-dip galvanizing process, the surface defects of hot-dip galvanized steel components caused by zinc slag are the most important problems of hot-dip galvanized steel components. During the production process, a certain amount of Fe reacts with Zn to produce FeZn 7 , its melting point is 640°C, which is higher than the temperature of molten zinc, and its specific gravity is 7....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/02
CPCC23C2/003C23C2/02C23C2/06
Inventor 金德斌张世成
Owner 杭州龙耀电力配件有限公司
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