There is wear and tear when calling, but there is no wear and tear when calling;
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As long as it is used, there is no problem with wear and tear;
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Lianyungang Shengyuan Technology Co., Ltd
Free hotline: 400-066-9125
Analysis of Bayer energy-saving warp and weft anti-wear technology documents and commonly used anti-wear methods for circulating fluidized bed boilers at present
1、 Disadvantages of thermal spraying
Due to the relatively late use and wide geographical area of sulfide bed boilers in China. Due to the diverse forms of coal used, the reasons for wear and tear are also different. So far, no suitable method has been found to deal with wear and tear. Many home appliance factories across the country now use thermal spraying method. According to relevant statistics, 65% of sulfide bed boilers in China adopt thermal spraying measures (mostly CFB12MW-150MW), but the satisfaction rate is only 30%. Some are also affected by thermal spraying measures, resulting in many legacy issues.
The specific drawbacks are:
Firstly, the selection of thermal spraying materials is quite non-standard. And the market is quite chaotic. It is quite difficult to repair welding once the pipe bursts. Because the chemical composition and stress of each material are not very integrated with each other. Because thermal spraying is mainly based on mechanical interlocking, the impact performance of the coating is not high. Many manufacturers have a headache when it comes to repairing welding after a pipe burst. From a technical perspective, thermal spraying can generate a certain porosity. Quality is difficult to guarantee.
Problems discovered during the six-month maintenance of spraying
2、 Disadvantages of hot spray welding
When conducting extensive welding and spray welding anti-wear treatment on rigid or large-sized integral water-cooled walls, the thermal stress caused by uneven heating of the workpiece due to the large heat input can induce cracks in the load-bearing welds on the water-cooled wall; Cracks are bound to occur on high-strength and low toughness wear-resistant weld beads and layers, especially when the wear-resistant process is not appropriate. Cracks on wear-resistant weld beads are prone to propagate into the base material of the water-cooled wall; The hardness value is relatively high, making it difficult to clean thoroughly. Cracks are inevitable. Grinding too deeply or too wide will affect the anti-wear effect. In general, it is not recommended to use spray welding method for water-cooled wall tubes
Problems caused by different stresses in spray welding materials
3、 Disadvantages of wear-resistant tiles
High aluminum high wear-resistant tile is a special shaped wear-resistant tile designed for the anti-wear of boiler water-cooled wall tubes, with a length of 200-300 mm. It is installed on two adjacent water-cooled wall tubes and has two<8 holes evenly distributed on the straight section in contact with the fins for fixing the high aluminum high wear-resistant tile with pins. The pin is first welded onto the fin, and then the high aluminum high wear-resistant tile is fitted onto the pin. At this point, the wear-resistant tile is in close contact with the water-cooled wall tubes on both sides. The cross-section of the wear-resistant tile is shown in the diagram. The installation and construction of high aluminum and high wear-resistant tiles are very convenient, but when applied to the water-cooled wall of CFB boilers, there are obvious steps in the transition between the terminal and the base material of the heating surface tube, and the thermal conductivity coefficient is quite insufficient; It is precisely in this step area that there is a high probability of wear and explosion of the heating surface pipes.
Another type is wear-resistant and heat-resistant cast arc-shaped tiles, with a length of 300-400 mm. During construction, high-temperature adhesive is applied to the inner wall of the wear-resistant and heat-resistant cast arc-shaped tile and then covered on the surface of the water-cooled wall tube. The two sides of the arc-shaped tile are in contact with the fins of the water-cooled wall tube and spot welded, with each weld seam being about 20mm long. The thickness of wear-resistant and heat-resistant cast arc-shaped tiles is generally 5mm, and it is difficult to weld the arc-shaped tiles to the narrow fins of the water-cooled wall tubes. The wear-resistant and heat-resistant cast arc-shaped tile itself has no problem with wear resistance for more than 3 months, mainly due to the obvious step in the transition between the end and the base material of the heating surface tube. It is also precisely in this step area that the probability of wear and explosion of the heating surface tube is high.
Explosion of pipes still occurs when using wear-resistant tiles
4、 Disadvantages of high-temperature coatings
Ultra fine high-temperature wear-resistant coating is an efficient, energy-saving, wear-resistant and environmentally friendly product suitable for industrial boilers. The specific development time was in the 1950s, and it was put into the market in the 1970s and widely promoted in the 1980s. However, due to the respective reasons of coatings and substrates, this so-called epoch-making environmentally friendly product is limited in its scope of use and has not developed rapidly enough to date. And there are still many professionals who hold a skeptical attitude. Specific drawbacks:
1. Poor adhesion
Due to the long-term combustion of water-cooled walls in high-temperature environments, there is a certain degree of corrosion and wear on the specific materials. In order for high-temperature coatings to adhere well to them, the surface of the original base material must be polished clean. But the reality is impossible to achieve.
2. The solidification time cannot be reached
This high-temperature resistant coating takes at least 48 hours to fully dissolve and adhere when applied to water-cooled walls. And this time is something that most power plants cannot meet. Generally, repair time is very precious, with only a few hours given to them. This has caused a very unfavorable aspect to the fusion quality of the coating.
3. Pre heating conditions cannot be met
High temperature and wear-resistant coatings require certain conditions during furnace lifting. He needs to go through preheating, constant temperature, high temperature, etc. When the fluidized bed (CFB) boiler is lifted, it directly rises from several tens of degrees to 300%, which has a significant impact on the hardness of the coating.
Overall, the high temperature and wear-resistant coatings are limited by certain conditions, which greatly reduces their effectiveness in use and is also the reason why they have not yet been widely accepted by people.
The peeling phenomenon of wear-resistant coatings is very serious due to the inability to reach the heating conditions
5、 Disadvantages of castables
Castable materials are mainly used in the design of wear-resistant and fire-resistant plastic or castable materials for the water-cooled walls around the dense phase zone in the lower part of the boiler, the side walls and ceilings near the flue gas outlet in the upper part of the furnace, the furnace opening area, the windward side below the screen heating surface in the furnace, the lower part of the water-cooled partition wall, and the steam cooled separator. The use of fire-resistant and wear-resistant plastic in the inner corner of the furnace has achieved general results, but it is difficult to handle the smooth transition to the water-cooled walls on both sides, which can easily create new wear areas. The wear-resistant effect of fire-resistant and wear-resistant plastics or castables is very average, and the wear-resistant layer can last for 3-5 months without any problem. The disadvantage is that the thermal conductivity is relatively small, which makes it unsuitable to increase the wear-resistant coverage area and cannot be compared with blue mud.
The phenomenon of bursting and foaming of castables is very serious
6、 Disadvantages of wear-resistant beams
At the beginning of this century, domestic researchers developed a new technology for anti-wear of sulfide bed boilers - multi-stage anti-wear beams. Currently in use nationwide. (mostly on CFB300MW units), but the feedback on the effectiveness is mixed. Many heavyweight experts also participated in the comments, and some articles claimed that the installation of wear-resistant beams by Erdos Shuangxin Electric Power Company not only failed to solve the problem of wear, but also caused severe vibrations in the entire boiler and ancillary equipment. This almost led to an accident. At the same time, many manufacturers use wear-resistant beams, but the consequences are quite significant, mainly in the following aspects:
1. Increase in air volume;
2. The temperature of the flue gas at the furnace outlet has increased beyond the design value
3. The resistance of the suction fan increases without any margin;
4. The water-cooled wall is partially covered by castable, resulting in a decrease in heat absorption capacity;
5. Especially changing the operating curve of the primary and secondary air in the furnace;
6. The carbon content in fly ash significantly exceeds the standard.
Based on the above issues, once blue mud technology is used for construction, these problems can be eliminated.
It is evident that the root of the wear-resistant beam is severely worn
7、 Disadvantages of Fusion Technology
Cladding is a new surface modification technique that involves adding cladding material to the surface of a substrate and using a high-energy density laser beam to melt it together with a thin layer on the substrate surface, forming a metallurgical bonded cladding layer on the substrate surface.
Laser cladding refers to the process of placing selected coating materials on the surface of the substrate to be melted simultaneously with a thin layer of the substrate surface by laser irradiation using different additive methods, and rapidly solidifying to form a surface coating with extremely low dilution and metallurgical bonding with the substrate. This significantly improves the wear resistance, corrosion resistance, heat resistance, oxidation resistance, and electrical properties of the substrate surface, thereby achieving the purpose of surface modification or repair. It not only meets the specific performance requirements of the material surface, but also saves a lot of valuable elements. But if the current adjustment is not scientific, sometimes the current situation can also be disrupted.
But the price is six times higher than other wear-resistant measures, which is difficult for ordinary units to accept. Its external construction is quite slow, which poses a test for the heavy and tense power plant repair work.
8、 Analysis of Traditional Anti Wear Effect
In summary, the above anti-wear measures have almost exhausted all current anti-wear technologies, but why do tube bursts still occur repeatedly in circulating fluidized bed boilers. Or rather, the issue of anti-wear in circulating fluidized beds remains the primary concern. The reason is still that the anti-wear reasons for the fluidized bed boiler have not been truly analyzed, or it is unscientific and inappropriate. Everyone knows a common truth that fluidized bed wear is caused by the structure and coal quality of the fluidized bed. But it is not so easy to understand how the wear of various parts of the fluidized bed is caused. So the methods used are roughly the same, so they cannot have a targeted effect, and the effect is not obvious. As the saying goes, 'Boiler wear prevention should be scientific, and the reasons for the interval should be determined.' If you blindly adopt wear prevention measures without understanding the causes of wear in each area, it is unrealistic. Generally speaking, there are three major patterns of boiler wear and tear. 1： The upper part experiences high-temperature oxidation wear, the middle part experiences slight high-temperature sulfurization wear, and the lower part experiences high-temperature erosion wear. Many manufacturers do not follow this rule and adopt measures such as spraying, wear-resistant tiles, and wear-resistant beams, resulting in mediocre results. The expected results were not achieved.
9、 Anti wear characteristics of blue mud warp and weft combination
Due to the different primary and secondary air velocities in the furnace, the density allocated for coal powder operation is also different, resulting in varying degrees of wear. From this, it can be inferred that the anti abrasion measures and methods adopted also need to be different. Our company has developed the "Blue Mud Skirt like Combination of Longitude and Latitude Technology" according to the complexity of the situation and local conditions. It can effectively prevent the wear of circulating fluidized beds, which can be summarized as "initial wear prevention, fine wear prevention, and fine wear prevention", also known as "first level wear prevention, second level wear prevention, and third level wear prevention". Generally speaking, the wear and tear of most manufacturers' boilers mainly occurs in the following areas: the combustion belt, the four corners of the boiler, the horizontal flue, the lower part of the screen, and the return port. Our company's combination anti-wear technology is developed to address this major issue with targeted solutions.
The so-called "initial wear prevention", also known as "first level wear prevention", refers to the use of nickel chromium alloy wear-resistant plates to process anisotropic plates, and the use of latitude and longitude layout methods to weld the boiler water-cooled wall firmly on top according to requirements and specific conditions. The purpose is to scientifically block a large amount of coal and stone block shaped ash powder, reduce impact wear, and more importantly, control the operation law of the primary and secondary air in the original furnace without damaging it. Let other coal powder fly ash operate according to the original rules without disorder. At the same time, there are good anti-wear measures for uneven furnace surfaces, twisted screens, and uneven furnace surfaces.
The so-called "fine abrasion prevention" or "secondary abrasion prevention" refers to setting up a blue mud skirt shaped abrasion prevention belt in the middle of the warp and weft abrasion prevention layers according to the actual situation, with the purpose of preventing abrasion. The "initial abrasion prevention" selects medium-sized particles that are sucked onto the water-cooled wall by the side or horizontal wrapping of the primary and secondary air, and uses the small platform on the upper layer of the blue mud skirt belt to intercept the fly ash in multiple layers, reduce acceleration, reduce strong impact damage, and implement soft landing.
The so-called "precision anti-wear" refers to "three-level anti-wear" technology, which is used above the furnace. That is, relatively fine fly ash wear. The fly ash separated from the secondary wear enters the upper horizontal flue through secondary high-speed absorption in the furnace. High density flushing is carried out in the axial space between each screen (suspended screen), and the upper layer of skin oxidized by high temperature is easily washed away. Our company has developed a special high-temperature resistant silicon crystal adhesive wear-resistant coating, which can be sprayed or painted on flat surfaces or the upper part of water-cooled walls. Plays the role of "precision anti-wear", also known as "three-level anti-wear".
10、 Working principle of Bayer energy-saving warp and weft anti-wear
The new technology of Bayer energy-saving warp and weft wear-resistant water-cooled wall is to install warp and weft plates vertically and horizontally in layers on the four walls of the furnace, effectively guiding the wall attached flow carrying materials to wash the water-cooled wall up, down, left, and right. This achieves the goal of changing the flow direction of the material flow, reducing the flow velocity of the material flow, isolating the adjustment and collision between the material flow and the water-cooled wall, greatly reducing the cutting wear of material particles on the water-cooled wall, and fundamentally solving the problem of water-cooled wall tube wear.
The new technology of warp and weft type water wall anti-wear has been adopted by multiple boilers. Operational practice has proven that the installation of warp and weft type anti-wear on the water wall significantly reduces wear, and the wear of the water wall tube does not exceed 0.1mm after continuous operation for 2 years. Especially in the transition zone of the casting material, no other anti-wear measures are used, and there is no trouble of shutdown due to water wall wear and leakage. This has enabled the circulating fluidized bed boiler to transition from frequent unplanned shutdown maintenance to a good state of continuous and safe operation.
Characteristic diagram of Bayer energy-saving warp and weft wear-resistant technology
11、 Characteristics of Bayer energy-saving warp and weft wear-resistant technology
1. The essence of the warp and weft anti-wear new technology is to guide the particle materials in the furnace, form internal circulation, change the flow direction of the material surface wall and the vortex flow direction of the material particles at the four corners of the chamber, so that the material flow tends towards the center, avoiding collision with the water-cooled wall, and thus curing the contact wear of the wall flow angle vortex on the water-cooled wall.
2. The warp and weft type technology uses high-temperature resistant and wear-resistant multi-element alloy casting, which can withstand high temperatures up to 1250 ℃ and has a tensile strength of ≥ 560Mpa. This material is well matched with the warp and weft type water-cooled wall anti-wear process, ensuring a service life of more than 6 years from a material perspective.
3. The warp and weft type is mainly installed in the dense phase zone around the furnace. As it is made of metal material, it enhances the heat conduction energy to a certain extent, so it will not have any negative impact on the load capacity inside the boiler.
4. The warp and weft type can effectively disrupt the vortex formed by the material flow on the uneven pipe wall, reduce the collision between material particles and the water-cooled wall, avoid the wear of solid materials on the water-cooled wall tube, and protect the water-cooled wall.
5. The warp and weft layered installation around the furnace can effectively reduce the speed of material particles falling along the water-cooled wall tube, isolate the contact between the material flow and the water-cooled wall tube, and fundamentally solve the problem of water-cooled wall tube wear.
6. Easy installation and short construction period. Taking a 240 ton boiler as an example, the construction period only takes 3 days.
7. Apply a 2-3mm thick anti-wear and high radiation coating on each latitude and longitude anti-wear zone, achieving a dual combination anti-wear effect and high radiation Bayer, allowing the fuel in the furnace to burn rapidly and fully.
8. Scientifically integrate a 12cm x 1.2cm blue mud skirt at an appropriate position on the horizontal baffle of the warp and weft wear-resistant layer, fully protecting the erosion of the upper baffle pit and playing a "ladder" type wear-resistant role. In addition, blue mud is filled in the gap between the semi-circular horizontal baffle and the water-cooled wall tube to prevent the accumulation of fly ash without leakage.
12、 Wear prevention mechanism of Bayer energy-saving warp and weft type water-cooled wall
The warp and weft type process is based on the principle of "dredging" and "guiding" the internal circulation of materials. It is equipped with warp and weft type flow deflectors to reduce the terminal velocity of poor particles falling along the water-cooled wall tube, isolate the material flow from contact with the water-cooled wall tube, destroy the eddy current formed by the material flow at the uneven and smooth tube wall, reduce the collision between material particles and the water-cooled wall tube, and thus avoid the wear of solid materials on the water-cooled wall tube, which plays a temporary and fundamental role in preventing wear of the water-cooled wall tube. The anti-wear principle can be summarized as follows:
1. Disrupting the stable edge wall zone reduces the particle concentration of the dense phase edge wall flow in the furnace, reducing the chance of particles coming into contact with the water-cooled wall.
2. When the downward flowing particles slide down to the wear-resistant warp and weft type, the sliding speed decreases by nearly 0 before starting to descend again. The distance between each layer of wear-resistant warp and weft type is greatly reduced compared to the original furnace height, that is, the sliding height of the particles is greatly reduced. Therefore, greatly reducing the particle flow velocity greatly reduces the wear of particles on the wall, and the wear is reduced to almost the same level as coal powder.
13、 Bayer energy-saving warp and weft wear-resistant practical application
The wear-resistant measures are taken by constructing a circle of wear-resistant warp and weft type along the circumference of the furnace at regular intervals on the membrane water-cooled wall above the wear-resistant material in the furnace, similar in style to miniature wear-resistant beams. Starting from the end of the wear-resistant casting material, install a circle horizontally along the inner water-cooled wall of the furnace at 5 locations, including 20mm, 720mm, 1700mm, 2800mm, 4200mm, etc., vertically upward. The dimensions of the warp and weft type are designed and made according to the outer diameter and spacing of the water-cooled wall, with a warp and weft type of 300mm * 75mm * 5mm. The material is Cr25Ni20 heat-resistant cast steel, and the warp and weft type is horizontally spot welded on the membrane wall fins. The overlap method is used between the warp and weft types (considering expansion factors, no welding is required).
Example diagram of Bayer energy-saving warp and weft wear-resistant water-cooled wall with large and small walls
14、 Bayer energy-saving warp and weft wear-resistant installation instructions
The cross plate (comb plate) of the new technology and new process adopts the wave compound welding method, with spot welding on the top and spot welding on the bottom. Mastering the hot expansion joint treatment technology in welding, that is, mastering the technique of latitude and longitude balance; Master the plane slope of welding; Master the treatment of thermal expansion joints. Beyond the range of thermal expansion joint, the welder uses other materials to enclose the joint to solve the problem. Vertical plate welding adopts vertical welding from top to bottom, with uniform spot welding at the upper, lower, left, right, and middle corners as the standard. During welding, welders should remember not to collide with pipes or pull arc pipes (there should be no marks on the pipes after the project is completed). The curvature of the warp and weft plate is clamped on the pipe, and the welding points are unified on the fins, with their welding points on the warp and weft plate. The welding rod is made of heat-resistant steel A402 with good toughness, and the welding point is firm and does not fall off. The new technology and new process water-cooled wall adopts a warp and weft type for wear prevention, which must be constructed in conjunction with blue mud material. Its main function is to supplement the wear and tear of the pipe parts, and the temperature is suitable for naturally filling the unevenness and original damaged surface. In recent years, our company has undertaken projects that use the warp and weft type for the protection of water-cooled wall boilers. Practice has proved that when the warp and weft type is constructed in conjunction with blue mud material, its wear prevention effect is not more than 0.1mm in the three-year thickness measurement record, and not more than 0.15mm in the five-year thickness measurement record. The anti abrasion function of the warp and weft type is to remove solid particle materials, but it may also cause collision and click on the pipe. By using blue clay material, it is possible to repair and supplement the worn and cracked areas of the pipes. Therefore, it is necessary to carry out supporting construction in order to present a good anti-wear effect.
Example diagram of new and old usage of Bayer energy-saving warp and weft wear-resistant water-cooled fireplace corners
Analysis of warp and weft wear-resistant plate materials：
|
analysis |
rare earth |
silicon |
manganese |
phosphorus |
sulfur |
chromium |
nickel |
molybdenum |
carbon |
|
result |
0.９2 |
0.９6 |
７.52 |
0.0９ |
0.0９ |
８.23 |
９.56 |
0.３ |
0.７ |
15、 Energy saving Bayer characteristics
1. Heat resistance temperature: within 1800 ℃;
2. Heat resistance sprint performance: Apply below 1800 ℃, and the surface remains unchanged when rapidly dropped to room temperature;
3. Thermal radiation performance: ε>98%（λ=2.5-25）；
4. Anti sprint performance: airflow sprint 700kpa, water flow sprint 300kpa;
5. Average linear expansion coefficient: 100-500 ℃=99 × 10-7/℃;
6. Energy saving rate: solar term rate of 3-18%, fuel saving rate of 4-16%, coal saving rate of 6-20%, energy saving rate of 6-25%;
7. Efficient period: 15 months
16、 Product model
|
high absorption |
PRODUCT MODEL |
Temperature |
purpose |
|
HTTE-B |
300℃-900℃ |
Suitable for various low-temperature objects |
|
|
HTTE-C |
600℃-1300℃ |
Suitable for various medium temperature objects |
|
|
high radiation |
HTTE-D |
900℃-1600℃ |
Suitable for various medium and high temperature objects |
|
HETT-E |
1200℃-1850℃ |
Suitable for various high-temperature objects |
|
|
Low absorption |
HETT-B |
300℃-650℃ |
Suitable for various low-temperature objects |
|
HETT-C |
500℃-1350℃ |
Suitable for various medium and high temperature objects |
|
|
high radiation |
HETT-D |
850℃-1750℃ |
Suitable for various high-temperature objects |
17、 Technical indicators
|
project |
Technical Parameter |
|
nature |
Gray, odorless, weakly acidic, acid resistant, corrosion-resistant, high temperature resistant |
|
Firmly bonded |
After withstanding an impact of 2000g.cm, the coating has no cracks or peeling. （25℃68%RH） |
|
thermal shock resistance |
1650 ℃ cold water circulation for more than eight times, without cracks or peeling. |
|
emissivity |
93%（1800℃） |
|
Anti radiation rate |
90%（relative） |
|
wavelength |
5.6-98um |
|
Anti airflow erosion |
98m/s |
|
proportion |
3.0±2%g/cm3 |
|
compressive strength |
2000g/cm(600℃ heat treatment) |
|
energy saving |
8-13% |
|
Normal total emissivity |
>0.86-9.3 |
|
Spectral emissivity |
>0.9 |
Example diagram of energy-saving Bayer spraying on water-cooled walls
18、 Characteristics of Blue Mud
（SIRPLAST PH 70 MU）Characteristics and parameters
|
Product type: |
Plastic mixture |
|
Main components: |
Alunite stone |
|
High operating temperature: |
1600℃ |
|
package: |
25 kg/box |
|
Shelf life: |
18 months |
|
Calculation of required materials: |
2.65 tons/cubic meter |
(Chemical Analysis) Standard/Method Unit Standard Value
Al2O3 XRF % 73 SiO2 XRF % 19
P2O5 XRF % 3 Fe2O3 XRF % 1
（physical property） CCS ℃ MPA
Cold compression stress
Dry handcuffs at 300 ℃ for 24 hours PRE/R27 MPa 35
Bake handcuffs at 1500 ℃ for 5 hours PRE/R28 MPa 55
Linear variation
Bake handcuffs at 1500 ℃ for 5 hours PRE/R28 % 0.2
Heat conduction at 800 ℃ ASTMC-417 W/mK 1.82
1000℃ ASTMC-417 W/mk 1.74 1200℃ ASTMC-417 W/Mk 1
Example diagram of using blue mud skirt shaped wear-resistant material
1. The construction period is short, simple, safe, and does not require support templates. The "blue mud" used does not require an oven and can be directly ignited and pressurized.
2. Blue mud wear-resistant construction does not require surface treatment of the wall pipe, and the construction does not damage the substrate.
3. The upper part of the skirt belt in contact with the water-cooled wall adopts a more scientific construction process, which basically eliminates the eddy current wear formed here.
4. Good anti-wear effect, very suitable for tube boilers.
19、 Currently, there are several commonly used wear-resistant and cost-effective options for circulating fluidized bed boilers
|
product name |
Excluding tax ㎡/(yuan) |
Usage time (year) |
notes |
|
Thermal spraying |
1000--1600 |
1 |
Shedding, short time |
|
Anti wear tile |
2000 |
２ |
Detachment. Affects heat transfer |
|
Ceramic coating |
1000 |
6 months |
The effect is poor. |
|
Anti wear beam |
1500 |
3 |
Affects operational patterns. Longitudinal wear resistance is not guaranteed |
|
Fusion deposition technology |
6000 |
4 |
High price, slow speed |
|
Warp and weft anti-wear |
1500 |
5 |
Time is constant. Vertical and horizontal anti-wear |
20、 Quality Assurance
1. The quality assurance period is three years and the usage period is five years.
2. The investment cost is only 1/5 of thermal spraying and 1/6 of deposition.
3. Thoroughly solved the lateral wear caused by smoke corridors.
4. Fully increase the carbon content of coal combustion.
5. Can ensure the anti-wear effect of welds and dead corners.
6. There are no negative effects.
7. Completely solve the wear caused by uneven surface of the pot
8. Large scale use may account for 2-5%
Note: This price is a reference price, and the final price will be determined based on the project manager's arrival at the construction site, on-site investigation of the construction site, working conditions, environment, and area.
Lianyungang Shengyuan Technology Co., Ltd
Performance of "Jingwei Blue Mud Silicon Crystal Adhesive Anti Corrosion and Anti Wear" Technology in the Past Two Years
Our company carried out construction on the following power plants in 2014 alone, and received positive feedback from users: Guangdong Lianjiang Power Plant, Sichuan Haihong Power Plant, Guangyuan Donghe Power Plant, Henan Linzhou Power Plant, Luoyang Xin'an Power Plant, Shandong Huajin Group Power Plant, Inner Mongolia Xilinhot Power Plant, Handan Steel Plant, etc. More than 200 home appliance factories and over 300 main engineering projects across the country have been successfully applied, with a total spraying area of over 70000 square meters and a working life of 3-5 years (depending on the furnace condition).
