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Anonymous users2024-02-16Single-layer fused epoxy powder anti-corrosion steel pipe, fused epoxy powder anti-corrosion layer has excellent adhesion, low cathodic peel value, relatively low impact resistance and moderate water absorption. Base treatment, using organic solvent to remove the oil stain on the surface of the steel pipe, the steel pipe is transmitted to the medium frequency heating device through the conveyor belt, and the medium frequency preheating (preheating temperature is about 60) to remove oil and moisture. Sand blasting treatment, the steel grit is sprayed on the surface of the steel pipe at high speed with a centrifugal shot blasting machine, the rust layer is removed, and the floating dust on the surface is removed.
It reaches the standard of rust removal, and the roughness is 40-100 m. After the rust removal inspection, the defective steel pipe is trimmed or rejected by visual inspection, and then the rust removal grade is detected by using a roughness measuring instrument according to the detection frequency specified in the standard. Double-layer fused epoxy powder anticorrosive spiral tube product introduction and use:
Double-layer epoxy powder is suitable for standard fusion epoxy powder coating of double-layer fusion epoxy anti-corrosion structure, suitable for anti-corrosion of the inner and outer walls of oil, gas and chemical pipelines in various corrosive media environments, as well as the inner and outer wall coating of metal products in municipal, environmental protection, construction and other industries. Characteristics of double-layer fused epoxy powder anticorrosive spiral tube: fast curing speed, short curing time, high coating efficiency, suitable for flow operation.
Excellent mechanical and physical properties. Excellent corrosion resistance, resistance to acids, alkalis, salts, oils, water, etc. It can have a long-lasting anti-corrosion effect in a wide range of temperatures.
As a new type of pipeline anti-corrosion material, fused epoxy powder has good physical and chemical properties and a wide range of temperature applications. The application of fusion epoxy powder coating on steel pipes has a history of more than 30 years abroad. Compared with the traditional manual coating of epoxy coal asphalt coating, epoxy powder spraying is sprayed and melted into a film in the form of powder, and its production line is fully automated, non-toxic, non-polluting, and fast curing speed.
Fused epoxy powder coating is referred to as FBE, and the FBE outer coating is a one-time film-forming structure.
When coating, the spray (throwing) rust removal grade of the outer surface of the steel pipe should reach the specified level, the anchor depth of the steel pipe surface should be within the range of 40 l00 m, and the temperature of the outer surface of the steel pipe should be monitored at the moment before the epoxy powder coating, and the temperature should be controlled within the recommended range of the powder manufacturer, but the maximum should not exceed 275.
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Anonymous users2024-02-15The double-layer fused epoxy powder anti-corrosion coating has strong adhesion to the surface of the steel pipe, chemical medium erosion resistance, temperature resistance, etc., and the corrosion resistance, cathodic peel resistance, aging resistance, soil stress resistance and other properties are also very good, and the use temperature range is wide (ordinary fused epoxy powder is -30 100, which has become one of the main systems of internal and external anti-corrosion coating technology for pipelines at home and abroad. However, due to the thin coating (, poor impact resistance to sharp objects, it is easy to be damaged by impact, and it is not suitable for stone square sections, suitable for most soil environments and directional drilling through clayey soils. The double-layer fused epoxy powder anti-corrosion system, with its excellent performance and low cost, has been highly valued by the long-distance pipeline engineering community, and has been applied to the special section of the long-distance pipeline project as a super anti-corrosion method, and has become an advanced technical means in the field of external anti-corrosion of long-distance pipelines.
The main structural characteristics of the production line, the use of annular elbow transmission line, according to the need to adjust the transmission speed, when the transmission wheel and the inner side wheel act at the same time, because the heater follows the radial direction of the elbow, the anti-corrosion treatment of the bend at different bending angles can be applied.
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Anonymous users2024-02-14The coating process of the double-layer fusion epoxy powder anticorrosive steel pipe system is basically the same as that of the standard fusion epoxy powder spraying process, only the arrangement of the powder spraying chamber and the spray gun is changed, and there is no need to add complex equipment. There are two types of powder spray chamber spray guns, double powder spraying chamber and integral powder spraying chamber, both of which are used for the coating of double-layer fusion epoxy powder anti-corrosion system. The laboratory test and field application test have proved that the comprehensive performance of the double-layer fusion epoxy powder anti-corrosion system applied to the long-distance pipeline is better than that of the single-layer epoxy powder anti-corrosion layer, and has a high cost performance, and it also has the characteristics of longer effective service life, low maintenance cost, and multiple types of anti-corrosion layers, etc., and can select its type according to different needs, and can be used in different pipeline construction, especially in the need to carry out construction in crossing and mountainous areas, which can resist the corrosion of chemically corrosive soil. The temperature and applicable pipe diameter can adapt to a wide range, can be applied to all kinds of special-shaped parts, in the on-site construction, there are more mature joint construction, repair and other processes, quality control is relatively easy, scratch resistance is superior, impact resistance can even be comparable with the three-layer PE anti-corrosion structure, etc., the system has strong bonding performance and good water permeability resistance, has been widely used in long-distance pipeline engineering.
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Anonymous users2024-02-13When the seasons change, there is no need to take special measures for the plants, because the plants have adapted to the local climate, but when the weather is cold, it is necessary to prevent frost damage to the plants. Ms. Su's plants withered and were probably due to the lack of nutrients due to the lack of nutrients due to the lack of fertilization before winter. It is also possible that the plant is watered too much, causing the plant to turn yellow or even rot. "In winter, the plants go dormant and don't need much watering.
Rogarin said. According to Luo Jialin's experience, in Wuhan, the yang plants can be watered about once every half a month, and other types of plants are watered about once a week, before watering, you can use a 20 cm wooden stick to insert the bottom of the soil of the flower pot to see if the bottom of the soil has been dry, if it is still wet, do not need to water.
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Anonymous users2024-02-12The anti-corrosion layer of fused epoxy powder is hard and thin, and the adhesion with the steel pipe is strong, and the mechanical properties are good. It has excellent corrosion resistance, and its service temperature can reach -60 100, which is suitable for the area with a large temperature difference, especially the best resistance to soil stress and cathodic spalling. However, due to the thin FBE layer, poor resistance to damage, and strict requirements for construction quality such as rusting, thermosetting epoxy powder coating is especially suitable for harsh and harsh environments due to its excellent performance, such as high salt, high alkali soil, high salt sea water and hot desert areas.
Bi-antibody powder is a special epoxy anti-corrosion double anti-corrosion powder for coal mines, which uses phenolic epoxy resin, conductive polymer and conductive materials, which is specially designed for conductive heavy anti-corrosion powder, which can effectively eliminate the static accumulation of gas pumping pipeline, avoid electrostatic sparks, and improve safety performance.
The product characteristics have very good adhesion to the substrate; The coating film has good conductivity and can effectively eliminate surface charge accumulation; The coating has excellent resistance to cathodic stripping at high temperatures; Low melting temperature, high reactivity, high curing completion rate, good mechanical properties; It has a good flame retardant effect. The plastic relays produced with this modified epoxy sealant adhesive meet the requirements in all technical properties. This kind of plastic relay has a large market capacity and a good sales situation, and most of them are exported abroad.
According to the curing conditions, the fused epoxy powder is divided into two types: fast curing and ordinary curing. The curing condition of fast-curing powder is 230 degrees Celsius, which is mainly used for pipeline spraying or three-layer anti-corrosion structure, due to short curing time and high production efficiency, it is suitable for assembly line operation; The curing conditions of ordinary cured powder are above 230 degrees Celsius, because of the long curing time and good coating leveling, it is suitable for spraying the inner surface of pipes.
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Anonymous users2024-02-11Fused epoxy powder is a solid, multi-component resin system that comes in a one-component form. The epoxy powder is composed of modified epoxy resin, curing agent, pigment, curing accelerator, flow regulator, etc., which is solidified and leveled to form a hard and dense coating film by smelting to the surface of the steel pipe at high temperature, so as to achieve the purpose of anti-corrosion. In order to improve the performance of FBE, a double-layer epoxy powder system has been developed abroad, which is coated with a plasticized epoxy powder surface layer on the basis of a single layer for mechanical protection, and the total thickness of the coating is less than 1mm, which is much lower than the thickness of 3 layers of PE.
This plasticized epoxy powder surface layer has a high resistance to mechanical damage, good water penetration resistance and high temperature resistance. <>
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