Nickel Based Laser
Cladding Powder
Ni base alloy
powder is mainly made of NiCrBSi or NiBSi. Ni-based self-fluxing powder has
good wettability, corrosion resistance and high temperature self-lubricating
effect, and is used in components with heat resistance, corrosion resistance and
thermal fatigue resistance. In general Ni35,Ni45,Ni60 etc can be used for laser
cladding, the No means hardness of powder. Inconel 625 and 718 has good
corrosion property under higher temperature, also widely used for laser
cladding process.
Cobalt based Laser
Cladding Powder
Cobalt-based alloy
powder is the cemented carbide resistant to various types of wear and corrosion
as well as high temperature oxidation. That is, the so-called
cobalt-chromium-tungsten (molybdenum) alloy or Stellite alloy cobalt-based
alloy is mainly composed of cobalt, containing a considerable amount of nickel,
chromium, tungsten and a small amount of molybdenum, niobium, tantalum,
titanium, Alloying elements such as lanthanum, and occasionally a class of
alloys containing iron.
Co-based self-fluxing
alloys have good high temperature performance and wear resistance and corrosion
resistance, and are used in petrochemical power, metallurgy and other
industrial fields where they are wear-resistant, corrosion-resistant and
high-temperature resistant.
Iron based Laser
Cladding Powder
The work pieces
required for laser cladding and manufacturing in the actual industry are mainly
carbon steel and cast steel. The Fe-based alloy is close to the base material
in composition and has good wettability. The advantage of Fe base powder is
lower cost and good wear resistant of cladding layer. As a result, it`s the
most widely used for laser cladding process. It is suitable for parts that
require local wear resistance and are easily deformed.
WC blended Laser
Cladding Powder
Tungsten carbide blended with Ni alloy powder is the best
choice for wear resistant work piece. This unique process can bring excellent
wear, corrosion and high temperature resistant. Our blend powder can achieve
different portion of WC from 35% to 60% without crack under suitable cladding
parameter.
Iron Alloy Powder,Nickel Alloy Powder,Cobalt Alloy Powder,Laser Cladding Powder Luoyang Golden Egret Geotools Co., Ltd. , https://www.lyshieldcutters.com
Valve corrosion, usually understood as the valve metal material under the chemical or electrochemical environment suffered damage. Since "corrosion" occurs in the spontaneous interaction between metal and the surrounding environment, how to separate the metal from the surrounding environment or use more non-metallic synthetic materials is the key point of anti-corrosion. Valve body (including valve cover), accounting for most of the weight of the valve, but also in regular contact with the medium, so the choice of valve, often starting from the valve body material. Valve body corrosion no more than two forms, namely chemical corrosion and electrochemical corrosion. Its corrosion rate depends on the medium temperature, pressure, chemical properties and corrosion resistance of the valve body material. Corrosion rate can be divided into six grades: 1, Corrosion resistance: Corrosion rate lower than 0.001 mm / year; 2, Corrosion resistance: corrosion rate of 0.001 to 0.01 mm / year; 3, Corrosion: corrosion rate of 0.01 to 0.1 mm / Year; 4, still corrosion: corrosion rate of 0.1 to 1.0 mm / year; 5, poor corrosion resistance: corrosion rate of 1.0 to 10 mm / year; 6, corrosion resistance: corrosion rate greater than 10 mm / year. Corrosion of the body, mainly the correct choice of materials. Although the anti-corrosion information is very rich, but it is still not easy to choose the right thing, because the problem of corrosion is very complex, such as sulfuric acid in the low concentration of steel is very corrosive, high concentration, then the steel production Passivation film, can be anti-corrosion; hydrogen only shows high corrosion resistance to steel under high temperature and pressure, chlorine corrosion performance is not large in dry state, and a certain humidity, the corrosion performance is strong, many materials can not be used . The difficulty of choosing the valve body material lies in that it can not only consider the corrosion problem, but also must consider the ability of pressure and temperature resistance, economically reasonable and easy to purchase and other factors. So you must be careful. Followed by the lining measures, such as lead-lined, lined with aluminum, lining engineering plastics, lined with natural rubber and various synthetic rubber. This is a saving method if the media conditions permit. Third, in the pressure, the temperature is not high, the valve body with non-metallic materials, often very effective control of corrosion. In addition, the outer surface of the valve body is also subject to atmospheric corrosion, the general steel materials are to paint to protect.