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Zinc-particle processing method for making electrogalvanizing steel plate

A processing method, electrogalvanizing technology, applied in the field of metal particle processing, can solve the problems of finished zinc particle pollution, low labor productivity, large maintenance, etc., and achieve the effects of reduced processing cost, low processing energy consumption, and high processing efficiency

Inactive Publication Date: 2005-07-20
上海宝鹏有色金属制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the main problems are: ①The process is complex and there are many processing procedures; ②The recovery rate of zinc particles is low, less than 70%; ③The energy consumption is high, and more than 30% of the leftover materials need to be returned to remelt, which consumes more than 30% more energy; ④ Huge stamping equipment, heavy maintenance and low labor productivity; ⑤ High investment in equipment construction; ⑥ Pollution to finished zinc particles

Method used

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  • Zinc-particle processing method for making electrogalvanizing steel plate

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Experimental program
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Effect test

Embodiment 1

[0040] First put the zinc ingot 1 in the melting furnace 2, the melting furnace is a 50kw resistance furnace, after the molten zinc is melted, because its density is lower than that of the zinc ingot, the molten zinc floats up, and the molten zinc flows out of the melting furnace from the liquid outlet 3, and the liquid is discharged The height from the mouth to the liquid level is 55mm. The zinc liquid flows into the holding furnace 5 through the graphite tube 4 with a diameter of φ18mm. The holding furnace adopts a ceramic inner heating sleeve 6 for heating, and the temperature of the zinc liquid 7 is controlled at 436-440°C. 2 Protection against surface oxidation of zinc liquid. The through hole 8 in the lower part of the holding furnace is connected with the metering device 9, and the zinc liquid flows into the metering device through the through hole, and directly drips onto the graphite cooling roller 11 after passing through the drip nozzle 10, and the dripping distance...

Embodiment 2

[0042] First, place the zinc ingot 1 in the melting furnace 2. The melting furnace is a 46kw resistance furnace. After the molten zinc is melted, because its density is lower than that of the zinc ingot, the molten zinc floats up, and the molten zinc flows out of the melting furnace from the liquid outlet 3. The height to the liquid level is 62mm. The zinc liquid flows into the holding furnace 5 through the ceramic tube 4 with a diameter of φ12mm. The holding furnace adopts a ceramic inner heating sleeve 6 for heating, and the temperature of the zinc liquid 7 is controlled at 437-442°C. The surface of the zinc liquid is oxidized. The through hole 8 in the lower part of the holding furnace is connected with the metering device 9. The zinc liquid flows into the metering device through the through hole, and directly drops onto the graphite cooling roller 11 after passing through the drip nozzle 10. The dripping distance from the drip nozzle outlet to the cooling roller surface is...

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Abstract

The production method of zinc granules for making galvanized sheet steel includes: melting zinc pig in melting furnace, feeding the melton zinc into heat-insulating furnace, said heat-insulating furnace adopts heating sleeve in the ceramic to supply heat, when the molten zinc is heat-insulated, the N2 or Ar2 can be used for protection. The temp. of molten zinc in the heat-insulating furnace is controlled in 435-455 deg.C. The lower portion of heat-insulating furnace is equipped with one or more than one through hole. Said through hole is directly connected with batchmeter, the molten zinc is flowed through the batchmeter and drip nozzle, then dripped on the gypsum cooling roller whose rotating speed is 30 rmp-80 rpm, 50%-80% of roller body area of cooling roller can be soaked in the condensated water tank whose internal water temp. is 15 deg.C-45 deg.C, so that the molten zinc can be quickly changed into zinc granules.

Description

technical field [0001] The invention belongs to the technical field of metal particle processing, and relates to a method for processing metal particles, in particular to a method for processing zinc particles for manufacturing electrogalvanized steel sheets. Background technique [0002] The development of the automobile industry puts forward higher requirements on the strength and corrosion resistance of steel plates. In order to meet the needs of the automobile industry, high-strength electro-galvanized steel sheets are developing rapidly. When manufacturing electro-galvanized steel sheets, electroplating is a key process. When electroplating steel sheets, zinc ions in the plating solution are mainly supplemented by adding zinc ingots or zinc particles, which are then dissolved in the plating solution. The method of supplementing zinc ions by adding zinc ingots in the plating solution has the disadvantages of inconvenient operation and uneven composition of the plating so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08B22F9/10
Inventor 陆汉锷陈群周德忠余益祥
Owner 上海宝鹏有色金属制品厂
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