How are those beautiful PVD gold watches made?
Human worship of gold has a long history, gold watch is able to bring a calm, luxury sense of maturity. But gold watches are expensive enough to deter many people, so cheap PVD plating technology was born. Today, we are going to help you understand how PVD technology is formed, what is its principle?
PVD is a technology that produces thin films of material deposited on a plated workpiece by Physical Deposition in vacuum.
PVD(physical vapor deposition) coating technology is mainly divided into three categories, vacuum evaporation coating, vacuum sputtering plating and vacuum ion coating. Corresponding to the three categories of PVD technology, the corresponding vacuum coating equipment also includes vacuum evaporation coating machine, vacuum sputtering coating machine and vacuum ion coating machine.
In recent ten years, the development of vacuum ion coating technology is the fastest, it has become one of the most advanced surface treatment methods. Generally speaking, PVD coating refers to the vacuum ion coating; Generally speaking, PVD coating machine, refers to the vacuum ion coating machine.
PVD coating (ion coating) technology, its specific principle is in the vacuum condition, the use of low voltage, large current arc discharge technology, the use of gas discharge to make the target evaporation and evaporation of substances and gases are ionized, the use of electric field acceleration, so that the evaporation of substances and their reaction products deposited on the workpiece. The PVD film plating technology is used to plating the film, with high hardness, high wear resistance (low friction coefficient), good corrosion resistance and chemical stability and other characteristics, the life of the film is longer; At the same time the film can greatly improve the appearance of the workpiece decorative performance.
PVD coating technology is an environmentally friendly surface treatment method that can truly obtain micron level coating without pollution. It can prepare various single metal films (such as aluminum, titanium, zirconium, chromium, etc.), nitride films (TiN, ZrN, CrN, TiAlN), carbide films (TiC, TiCN), and oxide films (TiO, etc.). PVD coating film thickness for micron level, thin thickness, generally 0.3 m ~5 m, which decorative coating film thickness is generally 0.3 m ~ 1 m, so it can hardly affect the original size of the workpiece surface to improve the various physical and chemical properties of the workpiece, after plating without further processing.
PVD coating can make the film color is dark gold, light gold, brown, bronze, gray, black, black, seven colors. The color can be controlled by controlling the parameters in the process of coating. After the end of the coating can be used to measure the color of the relevant instruments, so that the color can be quantified, to determine whether the color of the plating meet the requirements.
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