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PVD coating is a surface treatment process in which metals such as titanium, graphite, gold, crystal and other metals or non-metals, gases, etc. are formed on stainless steel sheets by sputtering, evaporation or ion coating techniques in a vacuum. Compared with traditional chemical coating methods, PVD has many advantages: such as no pollution to the environment, it is a green and environmentally friendly process; no harm to the operator; the film layer is firm, dense, strong corrosion resistance, and uniform film thickness.
HOTIGOLD adopts the industry’s most advanced PVD coating process to coat stainless steel sheets according to customer-specific requirements. The surface of the stainless steel plate treated with PVD coating is uniform in color, smooth and smooth, and the coating has a good protective effect.
The PVD coating process we use is mainly divided into three types:
Vacuum evaporation coating:
Under vacuum conditions, metals, metal alloys, etc. are evaporated, and then deposited on the surface of the stainless steel sheet. The method of evaporation is commonly used resistance heating, electron beam bombardment of the plating material to evaporate into a gas phase, and then deposited on the surface of the stainless steel sheet. This coating scheme It shows good adhesion of the film layer and uniform color, which is very suitable for the use of sheet materials.
Vacuum sputtering coating:
Under the vacuum condition filled with argon (Ar) gas, the argon gas is subjected to glow discharge. At this time, the argon (Ar) atoms are ionized into argon ions (Ar), and the argon ions are accelerated bombardment under the action of the electric field force. Cathode target, the target will be sputtered and deposited on the workpiece surface. The incident ions in the sputtering coating are generally obtained by glow discharge, in the range of 10-2Pa ~ 10Pa, so the sputtered particles are easy to collide with the gas molecules in the vacuum chamber during the process of flying to the substrate, causing the direction of movement. Random, deposited films tend to be uniform.
Vacuum ion coating:
Under vacuum conditions, a certain plasma ionization technology is used to partially ionize the atoms of the plating material into ions, and at the same time, many high-energy neutral atoms are generated, and a negative bias is applied to the stainless steel plate to be plated. In this way, under the action of a deep negative bias, ions are deposited on the surface of the stainless steel sheet to form a thin film. The interface diffusion depth of ion plating can reach four to five microns, that is to say, it is dozens or even hundreds of times deeper than the diffusion depth of ordinary vacuum coating, so it adheres very strongly to each other.
HOTIGOLD summarizes the coating process of various color stainless steel sheet products in the industry, and takes the lead in using the most advanced PVD coating technology to create color stainless steel sheets. We also summarize the technical characteristics of the PVD coating process.
The above overview is excerpted from relevant information. HOTIGOLD welcomes customers or brand owners to visit the factory at any time to learn about the most authentic HOTIGOLD.Feel free to contact us anytime.
The film thickness of PVD coating is micron level, and the thickness is relatively thin, generally 0.3μm ~ 5μm, and the thickness of the decorative coating layer is generally 0.3μm ~ 1μm, so the plate can be improved without affecting the original size of the stainless steel plate. Various physical properties and chemical properties of the surface, and can maintain the size of the stainless steel plate basically unchanged, and no further processing is required after plating;
PVD technology not only improves the bonding strength of the coating and the stainless steel sheet material, but also the coating composition has been developed from the first generation of TiN to TiC, TiCN, ZrN, CrN, MoS2, TiAlN, TiAlCN, TiN-AlN, CNx, DLC and ta- C and other multi-component composite coatings to form surface effects of different colors. This makes our HOTIGOLD decorative stainless steel sheets available in a wide variety of custom colors.
At present, the colors of the film layers that can be made are deep golden yellow, light golden yellow, brown, bronze, gray, black, gray black, seven colors, etc. By controlling the relevant parameters in the coating process, the plated color can be controlled; after the coating is completed, the color value can be measured with the relevant instrument, so that the color can be quantified to determine whether the plated color meets the requirements.