Preparation method of gravure bronze powder

A technology of copper gold powder and copper block, which is applied in the field of chemical material preparation technology, can solve the problems of weak metallic luster, high oxygen content of copper gold powder, unstable product quality, etc., and achieve high stability of production process and low oxygen content. The effect of low and high fine powder rate

Inactive Publication Date: 2017-08-08
邱秘
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing gravure copper-gold powder, which solves the problems of high oxygen content, low fine powder rate, weak metallic luster, and poor product quality in the copper-gold powder prepared in the prior art. Unstable technical issues

Method used

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  • Preparation method of gravure bronze powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Weigh raw materials: Weigh 85kg copper block, 10kg zinc block and 5kg aluminum block;

[0023] Step 2: Melting of raw materials: first place the zinc block and 0.03kg of sodium metal in a melting furnace and heat to 450°C to completely melt the zinc block, then preheat the aluminum block and 0.015kg of sodium metal at 500°C and add them to the melting furnace and add 0.05kg of sodium bicarbonate, raise the temperature of the furnace to 750°C to completely melt the aluminum block, then preheat the copper block and 0.255kg of sodium metal at 800°C and add to the melting furnace, and add 0.45kg of carbonic acid Sodium hydrogen, raise the temperature of the smelting furnace to 1250°C to completely melt the copper block to obtain a molten metal mixture.

[0024] Step 3: Water atomization powder making: Atomization is carried out twice, the nozzle used for the second atomization is located 0.5cm below the nozzle used for the first atomization, and the spray top angle ...

Embodiment 2

[0030] Step 1: Weigh raw materials: Weigh 70kg copper block, 25kg zinc block and 5kg aluminum block;

[0031] Step 2: Melting of raw materials: first place the zinc block and 0.15kg of sodium metal in a melting furnace and heat to 500°C to completely melt the zinc block, then preheat the aluminum block and 0.03kg of sodium metal at 600°C and add them to the melting furnace and add 0.07kg of sodium bicarbonate, raise the temperature of the furnace to 800°C to completely melt the aluminum block, then preheat the copper block and 0.42kg of sodium metal at 900°C and add to the melting furnace, and add 0.63kg of carbonic acid Sodium hydrogen, raise the temperature of the smelting furnace to 1300°C to completely melt the copper block to obtain a molten metal mixture.

[0032] Step 3: Water atomization powder making: Atomization is carried out twice, the nozzle used for the second atomization is located 0.8cm below the nozzle used for the first atomization, and the spray top angle is...

Embodiment 3

[0038] Step 1: Weigh raw materials: Weigh 75kg copper block, 24kg zinc block and 1kg aluminum block;

[0039] Step 2: Melting of raw materials: first place the zinc block and 0.168kg of sodium metal in a melting furnace and heat to 520°C to completely melt the zinc block, then preheat the aluminum block and 0.007kg of metal sodium at 630°C and add them to the melting furnace and add 0.05kg of sodium bicarbonate, raise the temperature of the furnace to 780°C to completely melt the aluminum block, then preheat the copper block and 0.525kg of sodium metal at 850°C and add to the melting furnace, and add 0.45kg of carbonic acid Sodium hydrogen, raise the temperature of the smelting furnace to 1280°C to completely melt the copper block to obtain a molten metal mixture.

[0040] Step 3: Water atomization powder making: Atomization is carried out twice, the nozzle used for the second atomization is located 0.9cm below the nozzle used for the first atomization, and the spray top angle...

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Abstract

The invention discloses a preparation method of gravure bronze powder. The technical problems that bronze powder prepared in the prior art is high in oxygen content, low in fine powder rate, low in metal luster and unstable in product quality are solved. The preparation method mainly comprises the steps of raw material weighing, raw material melting, water atomization powder preparation, cleaning, drying, polishing and screening. Since sodium oxide and sodium bicarbonate are added in the raw material meting process, the oxygen content of the bronze powder is reduced, and the microcosmic shape of particles is more regular. Since a polishing assisting agent is added in the polishing process, the obtained bronze powder is good in oxidization resistance and high-temperature resistance, and high in metal luster. According to the preparation method, the production technological stability is high, and the prepared bronze powder is low in oxygen content, high in fine powder rate and high in metal luster.

Description

technical field [0001] The invention relates to the field of preparation technology of chemical materials, in particular to a method for preparing gravure printing copper and gold powder. Background technique [0002] Copper-gold powder is made of copper-zinc metal as the main raw material through special mechanical processing and surface chemical treatment. It can present a golden luster and a resplendent effect. It is widely used in coatings and printing industries such as flying gold, gold paint, handicraft coating, paper gold printing, plastic gold printing and rubber gravure printing, but the traditional copper copper gold powder has poor high temperature resistance and no oxidation resistance. It is easy to change color in the air, thus losing the metallic luster; in addition, with the strengthening of people's awareness of environmental protection and the soundness and perfection of environmental protection regulations, solvent-based inks will be partially replaced by...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C9/01C22C1/02C22C1/06B22F9/08C23F3/06
CPCC22C9/04B22F9/082B22F2009/0828C22C1/02C22C1/06C22C9/01C23F3/06
Inventor 邱秘
Owner 邱秘
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