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Clearing device and method used for aluminum-zinc pot molten pool bottom slag

A cleaning device and molten pool technology, applied in the coating, metal material coating process, hot-dip coating process, etc., can solve the problem of long downtime, increased bottom slag in the aluminum-zinc pot molten pool, and affecting the flow of the aluminum-zinc pot molten pool Field distribution and other issues, to achieve the effect of convenient use

Inactive Publication Date: 2015-10-07
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Continuous hot-dip aluminum-zinc production will increase the bottom slag in the aluminum-zinc pot melting pool, which requires regular slag removal
In the prior art, a grab bucket is generally used to remove slag from the aluminum-zinc pot when replacing the sinking roller. Since the bottom slag is sintered at high temperature and contains high melting point alloys, under the action of the flow field of the molten pool, the bottom slag is sintered into high and low Uneven overall, due to the short interval between roll changes, the grab can only grab a part of the shallow bottom slag, so that over time, the thickness of the bottom slag will continue to increase, affecting the cleanliness of the molten pool and the change of the flow field of the molten pool, eventually leading to product coating defects increase
Many factories in China generally use large-scale equipment to clean the bottom slag of the aluminum-zinc pot after arranging multiple replacement cycles of the sinking roller, so that the downtime of the unit is very long and the cleaning cost is high. In addition, due to the high bonding strength and hardness of the bottom slag, the traditional aluminum The bottom dross cleaning method of the zinc pot molten pool is uncontrollable, and the locally thickened bottom dross seriously affects the flow field distribution of the aluminum-zinc pot molten pool, which in turn affects the quality of the coating

Method used

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  • Clearing device and method used for aluminum-zinc pot molten pool bottom slag

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Experimental program
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Effect test

Embodiment 1

[0028] The invention discloses a device for crushing the bottom slag of an aluminum-zinc pot melting pool, which mainly consists of a punch 1, a connecting seat 2, a support rod 3, a bearing seat 4, an impact body traction ring 5, an impact body 6, and a support rod suspension ring 7 composition.

[0029] The main body of the punch 1 is a cylinder with a diameter of 55-65 mm, and the material is 45 steel. The high-temperature-resistant and aluminum-zinc corrosion-resistant cone blank is surfacing on one end of the punch 1 by surfacing welding. The surfacing material is stellite6 cobalt-based alloy. Material, preheat the base metal of the punch to 250~350°C before surfacing, cover with refractory fiber and cool slowly to room temperature after surfacing, and then turn the cone blank on a lathe with a cemented carbide tool, the cone angle is controlled In the range of 60~120o, the cone tip fillet radius is 3~10 mm. The number of punches 1 is 1-3. The length of punch 1 is 250~3...

Embodiment 2

[0050] The invention discloses a device for crushing the bottom slag of an aluminum-zinc pot melting pool, which mainly consists of a punch 1, a connecting seat 2, a support rod 3, a bearing seat 4, an impact body traction ring 5, an impact body 6, and a support rod suspension ring 7 composition.

[0051] The main body of the punch 1 is a cylinder with a diameter of 55-65 mm, and the material is 40CrMo medium-carbon low-alloy round steel. The high-temperature-resistant and aluminum-zinc corrosion-resistant cone blank is surfacing on one end of the punch 1 by surfacing welding. It is a stellite6 cobalt-based alloy material. Before surfacing, preheat the base metal of the punch to 250~350°C. After surfacing, cover it with refractory fiber and slowly cool it to room temperature. Then use a carbide tool to turn the cone blank on a lathe. The cone angle of the body is controlled in the range of 60~120o, and the radius of the cone tip fillet is 3~10 mm. The number of punches 1 is 1...

Embodiment 3

[0069] The invention discloses a device for crushing the bottom slag of an aluminum-zinc pot melting pool, which mainly consists of a punch 1, a connecting seat 2, a support rod 3, a bearing seat 4, an impact body traction ring 5, an impact body 6, and a support rod suspension ring 7 composition.

[0070] The main body of the punch 1 is a cylinder with a diameter of 55-65 mm, and the material is 38CrNiMo medium-carbon low-alloy round steel. The high-temperature-resistant and aluminum-zinc corrosion-resistant cone blank is surfacing on one end of the punch 1 by surfacing welding. It is a stellite6 cobalt-based alloy material. Before surfacing, preheat the base metal of the punch to 250~350°C. After surfacing, cover it with refractory fiber and slowly cool it to room temperature. Then use a carbide tool to turn the cone blank on a lathe. The cone angle of the body is controlled in the range of 60~120o, and the radius of the cone tip fillet is 3~10 mm. The number of punches 1 is...

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Abstract

The invention discloses a clearing device and a method used for aluminum-zinc pot molten pool bottom slag. The clearing device comprises puncher pins, a connecting base, a supporting bar, a bearing base, and an impact body. The method comprises following steps: determination of original thickness distribution of aluminum-zinc pot molten pool bottom slag, pre-clearing and slag removing of aluminum-zinc pot molten pool bottom slag, and smashing and slag removing of aluminum-zinc pot molten pool bottom slag. The clearing device and the method are capable of completing bottom slag removing in a short time based on bottom slag height distribution, and controlling molten pool bottom slag height in a certain range.

Description

technical field [0001] The invention relates to the technical field of thermal coating, in particular to a device and method for removing bottom slag in an aluminum-zinc pot molten pool. Background technique [0002] Continuous hot-dip galvanized production will lead to increased slag at the bottom of the aluminum-zinc pot molten pool, which requires regular slag removal. In the prior art, a grab bucket is generally used to remove the slag from the aluminum-zinc pot when replacing the sinking roller. Since the bottom slag is sintered at high temperature and contains high melting point alloys, under the action of the molten pool flow field, the bottom slag is sintered into high and low Uneven overall, due to the short interval between roll changes, the grab can only grab a part of the shallow bottom slag, so that over time, the thickness of the bottom slag will continue to increase, affecting the cleanliness of the molten pool and changes in the flow field of the molten p...

Claims

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Application Information

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IPC IPC(8): C23C2/00C23C2/06
Inventor 杨立江王银军曹博蕊王立志
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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