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PVD (Physical Vapor Deposition) and CVD (Chemical Vapor Deposition) are two major thin-film coating technologies. PVD vaporizes materials through physical means (e.g., heating or sputtering), resulting in strong adhesion but slower deposition rates. CVD forms coatings via chemical reactions, off
As a new polishing process, plasma polishing is a trend in stainless steel polishing. If we can make good use of plasma polishing will save us a lot of time and costs.
PVD and CVD are the most commonly used surface treatment methods for tools and moulds, CVD is based on chemical vapour deposition and PVD is based on physical vapour deposition, as they differ in principle, the final coating results are different and each has its own focus in application.
Electrolytic polishing has great advantages over traditional polishing, low cost, small footprint, can polish complex workpieces, has unmatched advantages over traditional polishing.
PVD stands for Physical Vapour Deposition. PVD coating refers to a thin film deposition technique whereby solid materials are sputtered or evaporated in a vacuum environment and deposited as pure materials or alloy components to form a coating on a substrate.
Views: 27 Author: Site Editor Publish Time: 2022-08-04 Origin: Site
Surface treatment is a process method for forming a surface layer on the surface of a substrate material that differs from the mechanical, physical and chemical properties of the substrate. The purpose of surface treatment is to meet the product's requirements for corrosion resistance, wear resistance, decoration or other special functions. The following are common surface treatments.
Polishing treatment
Polishing refers to the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece in order to obtain a bright, flat surface processing method. Using polishing tools and abrasive particles or other polishing media on the surface of the workpiece for finishing processing, polishing can not improve the dimensional accuracy or geometric shape accuracy of the workpiece, but to get a smooth surface or mirror lustre for the purpose, sometimes also used to eliminate the lustre (matting).
Sandblasting
The process of cleaning and roughening the surface of a substrate using the impact of a high speed sand stream. Using compressed air as power to form a high-speed jet beam to spray material (copper ore, quartz sand, diamond sand, iron sand, Hainan sand) at high speed to the surface of the workpiece to be treated, so that the appearance or shape of the outer surface of the workpiece surface changes, due to the impact of abrasive on the surface of the workpiece and cutting effect, so that the surface of the workpiece to obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface is improved. The surface of the workpiece is thus improved in terms of fatigue resistance, increasing the adhesion between it and the coating, extending the durability of the coating film, and also facilitating the levelling and decoration of the coating.
Wire drawing treatment
It is a surface treatment that forms a line pattern on the surface of the workpiece by grinding the product to give a decorative effect. Depending on the pattern after drawing, it can be divided into: straight drawing, messy drawing, corrugation and swirling. Surface brushing is a surface treatment that forms a line pattern on the surface of the workpiece by means of abrasive products, which has a decorative effect. As the surface brushing treatment can reflect the texture of the metal material, it has been loved by more and more users and is more and more widely used.
Electrophoresis
The process is divided into anodic electrophoresis and cathodic electrophoresis. If the paint particles are negatively charged and the workpiece is the anode, the paint particles are deposited into a film on the workpiece under the electric field force called anodic electrophoresis; conversely, if the paint particles are positively charged and the workpiece is the cathode, the paint particles are deposited into a film on the workpiece called cathodic electrophoresis.
Electroplating
Electroplating is the process of applying a thin layer of other metals or alloys to the surface of certain metals, using electrolytic action to attach a metal film to the surface of a metal or other material, thus preventing oxidation (e.g. rust), improving wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulphate, etc.) and enhancing aesthetics. The outer layer of many coins is also electroplated.
Etching
Etching, also known as photochemical etching, is the process of removing the protective film from the area to be etched by exposing the plate, developing it and then contacting the chemical solution during the etching process to dissolve the corrosion and form a bump or hollowing effect.
Laser engraving
Also known as laser engraving or laser marking, it is a surface treatment process using the optical principle of using a high intensity focused laser beam emitted by a laser at the focal point to oxidise the material and thus process it. The effect of marking is to reveal a deeper layer of material through the evaporation of the surface layer, or to cause a chemical-physical change in the surface layer through light energy, or to "engrave" a trace by burning off part of the material through light energy, or to reveal the desired etched graphic or text by burning off part of the material through light energy.
