What kind of standard weight is not easy to rust
As the name suggests made of stainless steel weights, because stainless steel is not easy to rust, acid named, in addition to people in the industry call it weight, but also a lot of people called popular weights, stainless steel weights in the great Chinese The People’s Republic of China and the rest of the world are playing a huge role in measuring. Any industry can’t live without it.
The reason why standard weights rust is simple:
1. Atmospheric corrosion stainless steel weight
Stainless steel weight Atmospheric corrosion basically varies with the amount of chloride in the atmosphere. Therefore, close to the ocean or other chloride pollution sources is extremely important for corrosion resistant plates. A certain amount of rainwater is important only when the chloride concentration on the surface of the steel works.
Rural environment 1Cr13, 1Cr17, and austenitic corrosion resistant plates can be adapted to various applications without significant changes in appearance. Therefore, corrosion-resistant panels exposed in rural areas can be selected based on price, market availability, mechanical properties, manufacturing process performance, and appearance.
Industrial environment In the industrial environment without chloride pollution, 1Cr17 and austenitic corrosion resistant plates can work for a long period of time and remain substantially free of rust, possibly forming a dirty film on the surface, but when the dirty film is removed, it remains the same. Some bright appearance. In the chloride-containing industrial environment, stainless steel will cause corrosion.
Marine environment 1Cr13 and 1Cr17 corrosion resistant plates will form a thin rust film in a short period of time, but will not cause significant dimensional changes. Austenitic corrosion resistant plates such as 1Cr17Ni7, 1Cr18Ni9 and 0Cr18Ni9, when exposed to the marine environment There may be some rust. Rust is usually shallow and can be easily removed. 0Cr17Ni12M02 Mo containing corrosion resistant plates are basically corrosion resistant in the marine environment.
In addition to atmospheric conditions, there are two other factors that affect the atmospheric corrosion resistance of stainless steel. That is, the surface condition and the manufacturing process. Finishing grades affect the corrosion resistance of corrosion resistant plates in chloride-containing environments. Matte surfaces (glossy surfaces) are very sensitive to corrosion. That is, normal industrial finishing surfaces are less sensitive to corrosion. Surface finishing grades also affect the removal of dirt and rust. It is easy to remove dirt and rust from highly-polished surfaces, but it is difficult to remove from a matte surface. For matte surfaces, regular cleaning is required if you want to maintain the original surface state.
2. Freshwater corrosion stainless steel weight
Fresh water can be defined as water that comes from rivers, lakes, ponds or wells, regardless of whether it is acidic, salty, or slightly salty.
The corrosiveness of fresh water is affected by the pH, oxygen content and the tendency to fouling of the water. Scale (hard) water. The corrosivity is mainly determined by the amount and type of scale formed on the metal surface. The formation of this scale is the presence of minerals and temperature effects. Non-fouling (soft) water, which is generally more corrosive than hard water. The corrosivity can be reduced by increasing the pH or reducing the oxygen content.
The 1Cr13 stainless steel weight is significantly more resistant to freshwater corrosion than carbon steel, and has excellent characteristics for use in fresh water. This type of steel is widely used for applications such as shipyards and dams that require high strength and corrosion resistance. However, it should be taken into account in some cases. 1Cr13 stainless steel corrosion resistant plates may be sensitive to moderate pitting in fresh water. However, pitting corrosion can be completely avoided by cathodic corrosion protection. 1Cr17 and austenitic stainless steel corrosion resistant plates are almost completely resistant to fresh water corrosion at room temperature (ambient temperature).
3. Acid water corrosion stainless steel weight
Acidic water refers to contaminated natural water leached from ore and coal. Because of its strong acidity, it is much more corrosive than natural fresh water. Due to the leaching effect of water on sulfides contained in ores and coals, acidic water usually contains a large amount of free sulfuric acid. In addition, this water contains a large amount of iron sulfate, which has a very large effect on the corrosion of carbon steel.
Carbon steel equipment that is affected by acidic water is usually quickly corroded. The results of tests conducted with various materials subjected to acidic river water indicate that austenitic stainless steels have higher corrosion resistance in this environment.
Austenitic stainless steels have excellent corrosion resistance in fresh water and acidic river water, and in particular, their corrosion film has little hindrance to heat conduction, so stainless steel tubes are widely used in heat exchange applications.
4. Salt water corrosion stainless steel weight
Stainless steel weight The corrosive nature of salt water often occurs in the form of pitting corrosion. For stainless steel corrosion resistant plates, this is due in large part to the local destruction of the passivation film, which acts as a corrosion resistance, due to salt water. Other reasons for the pitting corrosion of these steels are the concentration of batteries that can be reported by the helium and other seawater organics attached to the stainless steel corrosion resistant plate equipment. Once formed, these batteries are very active and cause a lot of corrosion and pitting. In the case of high-speed flow of saline water, such as the impeller of a pump, corrosion of austenitic stainless steel corrosion resistant plates is usually very small.
For condensers using stainless steel tubes, the water flow rate must be maintained at more than 1.5 m/s in order to minimize the concentration of seawater organics and other solids in the tubes. Stainless steel resistant to salt water
Standard weight
1. Before using the standard weight, clean the dust and other stains on the weight surface with a special cleaning brush and a wiper.
2. Do not touch the weight directly with your hands. When using weights, wear special gloves and use special tools to clamp the weights. (Gloves and tools, see "weight accessories")
3, before the balance detection or weight comparison, weights need to be constant to reach the laboratory's atmospheric conditions, otherwise it will affect the test results.
4. After using the weight, it must be stored in the original packaging box.
The quality of survival, to the credibility of development
The company's main: stainless steel weights, stainless steel weights, E2 level weights, balance calibration weights, F1 level weights, cylindrical weights, F2 level weights, lock weights, M1 level weights, Steel chrome-plated weights, add-on shape weights, single hook double hook weights, round weights, non-magnetic stainless steel weights, square weights, 316 non-magnetic stainless steel weights, ring-shaped weights, JF-1 Magnetic stainless steel weights, set stainless steel weights, 304 stainless steel weights, laboratory weights, standard weights, electronic weighing scales, single stainless steel weights, brass weights, rights weights, standard weight combinations 1 , 2, 2, 5, can also be customized non-standard quality weight, customized time 3-7 working days.
With the prolonged operation of the Steam Turbine power generation equipment, after a long period of start-stop operation, the loss of the equipment gradually increases, which inevitably causes the wear, tear, deformation and damage of equipment components, making the whole operation of the machine threatened by risky factors, and make the unit's operating efficiency significantly reduced, and hence affecting the economic performance of the unit. Therefore, the equipment maintenance is particularly important. However, many users do not have professional technical experience and staff, given that, QNP is dedicated to provide its customers with a full range of unit maintenance and repair services, as well as the upgrading of old units. At the same time, QNP also provide its customers with long-term training and debugging services. QNP can develop tailor-made maintenance program upon its customers requirements, provide direct one-on-one service, and realize life-long service to our users.
QNP provides maintenance, repair, overhaul and upgrade services and spare parts supply for turbine-generator set of 0-1000MW.
Power Plant Installation,Steam Turbine Care,Generator Care,Electrical Cabinet Care
Shandong Qingneng Power Co., Ltd. , https://www.qnpturbines.com