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Manufacturing method for scale shaped metal powder

A technology of metal powder and manufacturing method, which is applied in the field of scaly metal powder, can solve the problems that the sheet diameter ratio does not meet the requirements, affects the use range and quality of metal powder, and has a long cycle, so as to eliminate oxidation problems, improve quality and use. range effect

Inactive Publication Date: 2004-07-21
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wet grinding needs to add grinding aids and grinding media. The drying process is complicated, the cycle is long, the efficiency is low, and the metal powder is easy to oxidize. After drying, a part of the media will remain in the metal powder, which will affect the use range and quality of the metal powder. Only use It is suitable for lower-grade dacromet liquid, and the film-to-diameter ratio cannot meet the requirements, so it cannot be used for other purposes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment one: be that the zirconia ball of 5~7 micron spherical zinc powder and diameter 5~8 millimeter is added 0.6% (the weight of ancient zinc powder amount) by zirconia ball: the proportioning of spherical zinc powder=10:1 percentage) zinc stearate and 0.5% (accounting for the percentage of zinc powder weight) surfactant sodium lauryl basic sulfonate, after the ingredients are mixed, grind in the closed grinder, control the water flow by controlling the water-cooled jacket of the grinder The grinding temperature is 60~80°C, the grinding time is 20 minutes, nitrogen gas is introduced, and the positive pressure in the mill is kept to avoid air entry, and then the grinding is carried out. The grinding speed is 300 rpm, and the grinding time is 5 minutes. Adjust the grinding speed Grind at 1000 rpm for another 15 minutes to obtain flaky zinc powder, which is classified by a cyclone classifier and then packaged into a product.

Embodiment 2

[0010] Embodiment two: the particle diameter is 6 ~ 8 millimeters stainless steel balls and the copper zinc powder that particle diameter is 5-10 micron is proportioned according to the ratio of ball material ratio of 8: 1, adds 0.8% sodium stearate of copper zinc powder weight and 0.4% palm oil (surfactant) are ground in a sealed grinder, the temperature is controlled at 60-80°C, and argon gas is fed into the grinder to keep the positive pressure in the grinder; grind for 25 minutes, wherein the grinder speed is 200 rpm, Grinding for 5 minutes, 800 rpm, grinding for 20 minutes, the obtained flaky copper zinc powder is packaged into products after grading.

Embodiment 3

[0011] Example 3: Mix stainless steel balls with a particle size of 5-10 mm and spherical aluminum powder with a particle size of 8-10 microns according to a ball-to-material ratio of 6.5:1, and then add 0.5% of the weight of the spherical aluminum powder. Lipid ammonium and 0.4% aluminum oxide (surfactant), grind in a sealed grinding machine, control the grinding temperature 40-50 ° C, feed nitrogen containing 3-5% oxygen, and keep the grinding machine positive Press, control the mill speed to be 200 rpm to grind for 3 minutes, and then grind at 700 rpm for 17 minutes to obtain flake aluminum powder, which is classified and packed.

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Abstract

A process for preparing flaky metal powder used for the environment protection type paint includes mixing the metallic powder with grinding medium, grinding aid and surfactant, and grinding at 20-100 deg.C in a enclosed grinder filled by inertial gas and cooled by water while controlling its rotation speed.

Description

[0001] 1. Technical field: hydrometallurgical manufacturing. 2. Background technology: [0002] Dacromet technology is a metal coating treatment technology similar to electrogalvanizing. It was invented by the American Diamond Samco Company in the late 1960s. It is the best corrosion resistance of steel parts in metal surface treatment in the world today. One of the high-tech. Dacromet coating has been widely used in the world due to its pollution-free, hydrogen-free embrittlement, excellent corrosion resistance, penetrability, and heat resistance. It is currently used to replace traditional electrogalvanizing and hot-dip galvanizing The best technology of craftsmanship. The invention is a production technology for flaky metal powder, especially suitable for producing flaky metal powder of dacromet solution, inorganic zinc-rich paint and heavy anticorrosion paint. [0003] At present, the existing domestic manufacturing method of flaky metal powder is produced by wet ball mi...

Claims

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Application Information

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IPC IPC(8): B22F9/04
Inventor 蔡晓兰李夏林贺子凯徐毅刘鸿康邓学广童长钿黄鑫
Owner KUNMING UNIV OF SCI & TECH
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