It has been more than a decade since the production of bronze powder in China. In the sixties of last century, with the help of relevant technical departments, Chinese manufactures produced single bronze powder specie.
The quality is general and it can not meet the demand for high-end products. Later, they introduced the advanced equipment of internationally renowned scaly metal powder production companies. But without enough money and technology on the product, Chinese metal powder supplier only introduced the hardware. The appropriate software and technologies were not introduced at the same time. So the products can not achieve desired quality standards.
In fact, the flaky bronze powder is mainly divided into two parts. The first one is the powder film, from the physics point of speaking, so that the shape of the sheet to form a sheet of copper powder, this step is mainly relying on the related equipment to achieve. To practice now this step is not difficult, to be made smaller, thin sheet of copper powder, many people have done, made of copper powder, the raw material. The next problem is that the powder processing performance to meet the needs of users. This process is related to the equipment, and also with additives, auxiliary equipment and methods related to the process steps.
In the past, there is no enough attention to bronze powder. Until now, processing of bronze powder is constantly developing and changing. There is an urgent need to make great efforts to study. Bronze powder is used in paints and printing industry in general, ordinary copper powder production factories in China, has been able to meet the needs, but in the high-grade copper powder, which a mainly rely on imports, compared to the amount of high-grade copper powder, and its high value-added and profits are quite high.
Production processes of bronze powders are mainly composed of the following components: preparation of the copper alloy material, copper in the furnace will melt the atomization method were thick copper powders. Powder classification, whichever is the smaller of copper powder into the ball mill by adding additives milling. The ground powder to eliminate the work hardening into the annealing furnace, annealing, and then into the vibration mill grinding, more than two steps under the circumstances can be recycled many times, until it reaches a considerable degree of fineness. The final milling stage of the mill, ball milling, edging the flow of air will have been taken out of the fineness requirements of fine copper powder, meet physical standards, collected by the filter.
Today, many enterprises do this step that the copper powder to complete, packaged some of the collected bronze powder charge into the protection of nitrogen or by adding other chemicals to protect the color of this bronze powder produced is also possible, compared with imports, is not very different, but if the place some time after, its appearance and color changes are more obvious. In addition, when transferred to do the basic components of paint or ink, the gap with imported powder and more. In order to reach or approach the international quality of the product, you must be on the existing foundation, bronze powder for further processing. It will cost much time and efforts. And the metal powder exporter will bear some risks.
In the post-processing of bronze powder, Chinese enterprises have widely used the polishing. The superficial modification of bronze powder is also in progress. Because various manufacturers have spent great efforts in this regard, the effects are beginning to show out.Source:http://www.mhcmp.com
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