In the process of hardware accessories production, stamping and not the last working procedure, in order to avoid the metal surface in the process of all kinds of storage, transportation, produce the phenomenon such as corrosion, with greasy dirt and impurities, also need to do some processing on the metal surface, such as cleaning, electroplating, oxidation and so on, these are metal stamping parts manufacturer is commonly used in the production process of metal surface treatment.
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Cleaning is the use of water, chemical solvents and other substances to remove dirt on the surface of the object, the metal surface pollutants or covering layer for chemical transformation, dissolution, stripping to achieve the effect of rust removal and decontamination.
According to the cleaning function and principle: chemical cleaning, physical cleaning, laser cleaning;
chemical cleaning is mostly done with a chemical solution (such as detergent) mixed with water in proportion to cleaning the metal. Chemical cleaning has strong cleaning ability, fast decontamination speed and low cost, but improper disposal of some chemical substances will cause harm to the environment;
physical cleaning mainly uses natural materials (e.g. treated corn cobs) mixed with water to clean the metal. Corn cob has the characteristics of good toughness, strong water absorption, environmental protection and safety, strong cleaning ability.
Laser cleaning is a process of high-energy laser beam irradiation of the surface of the workpiece, so that the surface of dirt, particles, rust and other objects instant evaporation or peeling, so as to achieve cleaning and purification process. It is a complete dry cleaning process, does not require the use of cleaning liquid or other chemical solutions, is a green cleaning process, and the cleanliness is much higher than the chemical cleaning process. But the cost is high, and it is mostly used for surface cleaning of large metal equipment.
Electric plating
The purpose of electroplating is to plate metal coating on the original material of the workpiece, and change the surface properties or characteristics of the original material. Electroplating can enhance the corrosion resistance of metal (corrosion resistant metal coating), increase hardness, prevent wear, improve electrical conductivity, lubricity, heat resistance and surface appearance.
Electroplating common galvanized, chrome plating, nickel plating and so on.
Galvanized is in metal, alloy or other materials on the surface of a layer of zinc to play a beautiful, rust prevention role, now the main method is hot dip galvanized;
chrome plating is stable in the atmosphere, not easy to discolor and lose luster, high hardness, good wear resistance. When the hardness of stainless steel metal parts is not enough, chromium plates can improve the hardness. To prevent corrosion, copper and nickel should be plated before chromium plating. The chrome plating can withstand temperatures as high as 1,200 degrees Fahrenheit (650 degrees Celsius);
nickel plating is widely used in automobiles, bicycles, watches, medical instruments, instruments and daily hardware, etc., can be used for both anti-corrosion, but also good conductivity of the workpiece, such as the metal parts in Madingding.
Oxygen is changed
Oxidation in metals is mostly anodic oxidation. In order to overcome the defects of aluminum alloy surface hardness, wear resistance and so on, expand the application scope, prolong the service life, surface treatment technology has become an indispensable part of the use of aluminum alloy, and anodic oxidation technology is the most widely used and the most successful.
For example: aluminum and its alloy in the corresponding electrolyte and specific process conditions, due to the action of the applied current, the formation of a layer of oxide film on the aluminum product (anode) process.
In addition to anodic oxidation, there is also a chemical oxidation, without electricity, only in the liquid immersion, is a pure chemical reaction. The wear resistance of metal after chemical oxidation is not as good as that of anodic oxidation, but the conductivity is better.
In addition to the above several common basic metal treatment processes, there are a series of products according to the needs of the process to do treatment, such as: metal surface coloring, paint, etc. Different technologies change the performance of metal in different ways, but the end result is to make hardware accessories more perfect and durable.