Increase of vertical oxidation line and high frequency oxidation power supply
2023-04-14 09:23
The anodic oxidation aluminum profile production line in China is basically horizontal.
The 2-tone production line imported from Japan in the 1980s was not satisfactory and almost negated. 1997 Xifei Aluminum Company imported from Japan an annual output of 12000T vertical oxidation electrophoresis coating automatic production line with higher technical level and output quality. late 20th century and early 21st century, Sichuan Ark and Guangdong Jianmei successively put into production an annual output of 20000T and 30000T production lines.
Generally speaking, the vertical line is suitable for mass production, and the annual output is better from 12000T to 36000T. At this time, chemical and electrical energy consumption are lower than the horizontal line, while occupying less space, easy to automate production. The main disadvantage is the high construction cost of one investment, for example, the monthly output of 1000T, the vertical line is 1.8 times the construction cost of the horizontal line. However, vertical anodizing production line is a good choice for the future.
Increase of energy-saving high-frequency rectification equipment
As China's awareness of the environment and energy conservation continues to increase, energy-saving equipment is bound to evolve. Anodizing power supply is not an isolated device, it is an important device for anodizing process.
In the 1960s, due to the generation of high-power rectifier tube appeared in the aluminum oxidation and electroplating industry, the second generation of power supply - silicon rectifier, but these two generations of power supply are bulky, energy consumption, low output indicators and poor precision, control inconvenience and other shortcomings, and later gradually replaced by the third generation of rectifier - -silicon controlled rectifier has replaced. Silicon controlled rectifier due to high precision, convenient control in the 70s after the gradual and widespread application. But the silicon controlled rectifier is still based on the bulky and high consumables of the frequency transformer, so the power supply is large, bulky, high consumables and high energy consumption disadvantages still exist. And because the voltage and current adjustment of this power supply is dependent on the open angle of the SCR to control, it will produce a large number of harmonics, thus polluting the power grid, and because the SCR rectifier operating frequency in the low frequency band, so it is very difficult to be absorbed by the filter, which obviously does not meet the requirements of clean production. In this case, the fourth generation rectifier that can overcome the many shortcomings of silicon controlled rectifiers - high frequency aluminum oxidation power supply came into being.
High-frequency aluminum oxidation power supply is not only small, low consumables, high efficiency and high precision, easy to control, so quickly accepted by the aluminum oxidation and plating industry. Internationally, as long as the slightly advanced countries have basically eliminated the silicon controlled rectifier. Domestic aluminum oxidation and electroplating industry on the application of high-frequency switching power supply is also becoming more and more common.
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