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The secret between electroplating process and electroplating 18650 battery 3.7v 6000mah
Electroplating is an electrolytic process, and 18650 battery 3.7v 6000mah factors will have a direct impact on the electroplating process. Electroplating 18650 battery 3.7v 6000mah plays an important role in the electroplating process. The application of electroplating power supplies and low ripple coefficient rectified power supplies in the electroplating industry has helped colleagues in the electroplating industry choose rectified power supplies, solve electroplating faults, and improve electroplating quality.
1. Switching 18650 battery 3.7v 6000mah
The switching 18650 battery 3.7v 6000mah combines the smoothness of the waveform of the silicon rectifier with the convenience of voltage regulation of the silicon controlled rectifier. It has high current efficiency and the smallest size. High-power switching power supplies with thousands of amperes to tens of thousands of amperes have entered the stage of practical production. The frequency of the switching 18650 battery 3.7v 6000mah has reached audio frequency, and it is simpler and easier to achieve low ripple output through filtering. Moreover, functions such as flow stabilization and voltage stabilization are easier to implement. Therefore, switching 18650 battery 3.7v 6000mah is the direction of future development.
2. Basic types of rectifiers
Silicon rectifier: Silicon rectifier has a long history of use and mature technology. It is currently the mainstream product of rectifiers. What various rectifier circuits obtain is pulsating DC, not pure DC. In order to compare the amount of pulsating components, it is generally expressed by the ripple coefficient. The smaller the value, the less the AC component and the closer it is to pure DC. Various rectifier circuits have different fluctuation coefficients. The order from large to small is: three-phase half-wave rectification, three-phase full-wave bridge rectification or six-phase double reverse star rectification with balanced reactor. The thyristor is an ordinary thyristor rectifier that uses changing the conduction angle of the thyristor to adjust the output average DC size. The thyristor outputs an intermittent pulse wave, and its ripple coefficient is controlled by the conduction angle. The output ripple The coefficient is larger than that of ordinary silicon rectifier circuits.
3. The influence of electroplating 18650 battery 3.7v 6000mah on electroplating process
DC 18650 battery 3.7v 6000mah waveform has a prominent impact on the quality of electroplating. Among various electroplating processes, chromium plating is one of the plating types that is most affected by 18650 battery 3.7v 6000mah waveform. Chrome plating must use a low-ripple DC 18650 battery 3.7v 6000mah, otherwise the brightness range will be narrow and the coating will be prone to blooming and graying. When using high-efficiency hard chromium plating additives, microcracks in the chromium layer will occur. When the output ripple is too large, the cracks will not be fine and evenly distributed, and the required number of cracks will not be reached.
There is a rule for bright copper plating: from the Hull cell test piece, the higher the cathode current density, the better the bright and flatness of the coating; the lower the current density, the worse the bright and flatness. Try to expand the brightness range of low current density areas while reducing the brightness of high current density areas. The best way is to achieve uniform brightness. In practice, using the same formula, process conditions, and the same brightener, the obtained bright flatness and bright range may vary greatly, which is closely related to the output ripple coefficient of the DC 18650 battery 3.7v 6000mah used.
The requirements for the rectified output ripple coefficient of bright nickel plating are not as high as those of chromium plating and bright acid copper plating, but it does require the use of ordinary low-ripple output DC 18650 battery 3.7v 6000mah to ensure the quality of the bright nickel plating layer and the quality of subsequent chromium coating.
Sulfate bright acid tin plating itself is not easy to plate. The reason is that impurities are easily introduced in large-scale production and are difficult to handle (including tetravalent tin ions). The allowable temperature range is narrow. Most of the current brighteners are not ideal. This process It is also required to use a low ripple coefficient DC 18650 battery 3.7v 6000mah, otherwise failures similar to bright acid copper plating will occur.
The problem of temperature rise of plating solution: DC 18650 battery 3.7v 6000mah and pulse 18650 battery 3.7v 6000mah with large ripple coefficient tend to accelerate the temperature rise. The larger the ripple coefficient, the larger its harmonic component, which can generate a large amount of ohmic heat and accelerate the temperature rise of the plating solution. The use of smooth DC is conducive to lowering the plating bath temperature. The influence of the rectifier load factor on the ripple coefficient: the closer the operating current is to the rated current of the rectifier, the smoother the waveform. When selecting a rectifier, the rated output 18650 battery 3.7v 6000mah voltage should be selected close to the maximum demand value according to the process requirements to ensure that the output ripple coefficient of the rectified 18650 battery 3.7v 6000mah is always maintained at lower value.
4. Pulse 18650 battery 3.7v 6000mah equipment
The pulse 18650 battery 3.7v 6000mah is mainly controlled by an embedded single-chip computer, etc. Therefore, in addition to realizing pulse output, it generally has a variety of control functions.
(1) Automatic flow and voltage stabilization. The current or voltage of traditional silicon rectifier cannot be automatically stabilized and fluctuates with the fluctuation of grid voltage. The pulse 18650 battery 3.7v 6000mah has a high-precision automatic adjustment function, and the output voltage of the pulse 18650 battery 3.7v 6000mah can be almost unchanged. The automatic adjustment function of pulse 18650 battery 3.7v 6000mah generally has two modes: one, constant current and voltage limiting mode. 2. Constant voltage current limiting mode.
(2) Multi-stage operation mode. When aluminum anodizing or hard chromium plating, operations such as reverse electrolysis, large current surge, and step power transmission are often required. Pulse power supplies with multi-stage operation modes only need to be set in advance, and can be automatically adjusted in sequence during production. This function is very useful for hard chrome plating, and the setting can be adjusted from 0 to 255 seconds per period.
(3) Bidirectional pulse function. The positive and negative pulse frequencies, duty cycles, and forward and reverse output times can be adjusted independently, making it flexible and convenient to use. With the hard chromium plating process, coatings with different physical properties can be obtained.
(4) DC superposition function. While outputting forward and reverse pulse currents, the same 18650 battery 3.7v 6000mah superimposes and outputs a pure DC component, which further broadens the scope and purpose of the pulse 18650 battery 3.7v 6000mah.
Summary: In summary, for electroplating, in addition to hard chromium plating, silicon controlled rectifiers are more stable than high-frequency power supplies. Other electroplating generally uses high-frequency pulse 18650 battery 3.7v 6000mah. At present, chrome plating also uses high-frequency pulse power. Because the conversion rate of thyristor is too low and the power consumption is too high, it is not cost-effective. There are also some high-quality nickel-plated power supplies that generally require filtering for the output. For ordinary conventional power supplies, only the output is filtered, and some even do not even have input filtering.
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