Fiberglass reinforced plastic (FRP) grating performance characteristics are as follows: has a very superior resistance to acid, alkali, organic solvents and salts and many other gas, liquid media corrosion, in the field of anticorrosive has incomparable superiority. According to the requirements of the actual use of occasions, you can economically choose to use o-phenylene type, m-phenylene type, vinyl type resin as the base material.
Lightweight, high-strength, and easy to cut, installation
Because of the resin and glass fiber composite, its density is small not more than 2 kg per cubic decimeter, only 1/4 of the steel, aluminum, 2/3. Its strength is rigid polyvinyl chloride 10 times, the absolute strength of more than the level of aluminum and ordinary steel. Its light weight can greatly reduce the foundation support, thus reducing the material cost of the project. It is easy to cut and install, no need for fire and large lifting equipment, only a small amount of labor and power tools, making the installation cost is also greatly reduced. FRP grating (FRP grating) applications:
Water treatment: inspection aisles, gutter covers, large containers, washers, interceptor grates, running water tanks, biochemical water treatment tanks hangers, ventilation windows, staircases, cooling towers, operating platforms pavement
Chemical plants: stair stepping, operating platforms, guardrails, double flooring, gutter covers, filter grates
Oil industry: offshore Oil platforms
Textile mills: instead of metal grills, wooden platforms and cover the concrete floor, next to the bleaching and dyeing tanks, flooring, near the valves, etc.
Power plants: chemical water workshop gutter covers, waste water tanks, etc.
Metal surface treatment: pickling solution sites, around the machine instead of wooden floors, around the highly corrosive containers, galvanizing line aisles, double flooring
Marine food processing plants: slippery surfaces and other harsh environments, on ships
Transportation: platforms, ship decks, aisles, military minesweepers, stair treads
Beverage industry: stair treads, alternative to expensive stainless steel, loaded floors
Pulp and converting mills: stair treads and floors, flooring walkways, high humidity areas
Electronics: gutter covers, pickling shops, anti-static floors, and other areas with high humidity. Pickling workshop, anti-static (anti-static grille) and high cleanliness workshop
Meat processing plant: corrosive floor, staircase, slippery floor workbench and stair stepping board
Car wash/car detailing store: car wash drainage board, parking space, car wash gutter cover
Crane: 3 meters or 6 meters long crane on the aisle
Others: corrosion-resistant shelf , decoration, square fountain, scaffolding, civil construction facilities, fencing and double flooring in the breeding industry, and so on.
Operating platform: many chemical plants have a large number of operating platforms, the use of fiberglass reinforced plastic grating as a surfacing material for operating platforms, corrosion-resistant, no need to paint, no maintenance, long service life, can be used for fifteen to twenty years. Light weight, compared with steel, reduce the weight of three-quarters, so there is no need to use lifting equipment when installing, as a support in the equipment on the operating platform is more appropriate. Fiberglass reinforced plastic grating opening and cutting is very convenient, the use of arc cutting saw can be very convenient to open the hole to meet the requirements of the installation equipment, and will not be due to the opening of the grating caused by the mechanical properties of the grating changes, not to mention the grating will not cause the scattering. For mobile operation platform, the use of lightweight fiberglass reinforced plastic grating is more suitable. In addition, the appropriate design of fiberglass reinforced plastic grating has the right amount of elasticity can reduce the fatigue of long-term staff in the above, improve work efficiency, and therefore is the ideal material for making platforms.
Walkway: factories (such as chemical plants, steel mills, etc.) there are often many walkways, some of which are the channel between the equipment and equipment, some for inspection, these walkways are generally welded with round steel, due to corrosion, often every year to do the anticorrosion coating. The use of FRP grating production of these walkways, no maintenance treatment, not only can make the walkway to keep the color bright for a long time, but also can make the walkway construction light, plus non-slip paving sand surface layer, is the best choice for outdoor walkways in the northern snow and ice season. Gutter cover: many chemical plants, smelters, electrolysis workshop, power plant chemical treatment plant; electroplating plant, battery factory, machinery factory pickling workshop; pharmaceutical factories, printing and dyeing plants, salt mines, etc. There are a large number of ditches, ditches, mostly corrosive liquids, the traditional gutter with angle steel, flat iron welded grating, cast iron grating, cement cover, etc., the material is not corrosion-resistant, more than a few years, or months that is destroyed, and the workshop showed a broken mold, the material is not corrosion-resistant. Workshop presents a broken mold, the use of FRP grating can be a good solution to the problem of corrosion, while facilitating the drainage of sewage into the gutter, but also to facilitate the observation of the situation in the gutter at any time.
Offshore oil platform: the traditional offshore oil platform often use steel plate for surfacing materials, the ocean's harsh climate coupled with seawater erosion caused by serious corrosion of these materials, increasing the insecurity factor, foreign countries have been successful FRP grating used in this hostile environment, due to the weight reduction of three-fourths of the weight, so that the foundation support components such as easier to deal with, after a reasonable design, but also be able to reduce the total cost of the platform. The total cost of the platform.
Wastewater treatment: in wastewater treatment, FRP grating can be used as a cooling tower below the operating platform surfacing materials, can be used as a fire water treatment pool hanging tools, can also be used as a sewage treatment plant maintenance walkway.
Stair treads: chemical plants, petrochemical plants often have several layers or even dozens of layers of production equipment, to use a large number of staircases, traditionally welded with steel plate or round steel welded staircases in these corrosive environments will be quickly destroyed, the company provides stair treads not only solves the problem of corrosion, but also non-slip wear-resistant.
Fence: the factory's medium and high pressure equipment, large storage tanks around the general need to set up a fence in accordance with the requirements. Runlin grille is the ideal material for these places due to its insulating, corrosion-resistant, colorful and easy-to-install properties. In addition, it can also be used for windows and fences in chemical plants with serious corrosive environments.
Top platform: tanks on top of the walkway, platform is often a more serious corrosion, rust everywhere, daunting, suffering serious corrosion of the platform, the walkway is often the existence of potential accidents, FRP grating manufactured tank top platform can completely change this situation.
Anti-corrosion shelves: storage battery factory has a large number of storage battery shelves, the use of fiberglass reinforced plastic shelves, can effectively solve the traditional shelves are not corrosion-resistant.
Double floor: In many corrosive workshops, such as pulp refining workshop in pulp mill, electroplating workshop in electroplating factory. The traditional operation method is the operator, finished products, waste residue, waste liquid in the same ground, which has many inconvenient points, easy to cause damage to the anti-corrosion ground, the concept of the ground with the entity is different from the double-layer grille ground, that is, the upper layer consists of FRP grille, the lower layer of the ground for the building substrate, the operator walks on the surface of the grille operations, finished products can be placed on the grille surface, and waste liquid, waste residue can be discharged to the lower layer of the substrate ground, the operation can be completed with powerful The ground of the substrate, the operation can be completed with a strong water sprayer rinse, remove the ground pile, which is convenient for the operators, but also convenient for the management staff to go to the site to check the work.
Boat deck: used for boat decks or footbridge materials, can greatly reduce the weight of the deck to increase the cargo capacity, and prevent the shipboard media and seawater erosion. Its excellent antimagnetism is more suitable for use in minesweepers. 1, due to the small density, light material, in the high water table area installation of fiberglass reinforced plastic grating is very easy to float pipe, must consider the installation of piers or rainwater runoff diversion and other anti-floating measures.
2, in the installed glass fiber reinforced plastic grating on the open tee, repair pipeline cracks and other construction, similar to the requirements of the plant with completely dry conditions and construction of the resin and fiber cloth used in 7-8 hours of curing, and on-site construction and repair is generally difficult to meet this requirement.
3, the existing underground pipeline detection equipment is mainly to detect metal pipeline, and non-metallic pipeline detection instruments are expensive, so the fiberglass reinforced plastic grating buried in the ground can not be detected, and other subsequent construction units in the construction of the pipeline is very easy to dig injury, damage.
4, FRP grating anti-ultraviolet ability is poor. Open fiberglass reinforced plastic grating by making 0.5mm thick resin-rich layer and ultraviolet absorber (factory processing) on its surface to slow down the aging time. With the running time, the resin-rich layer and UV absorber will be damaged, thus affecting its service life. There are three main types of FRP grating production process: reciprocating fiber winding process, continuous fiber winding process and centrifugal casting process.
Reciprocating fiber winding process (belongs to the fixed-length method): in this process, the dip tank with the rotation of the mandrel for reciprocating motion, long-fiber glass wire to a certain oblique angle relative to the mandrel axis auxiliary put, auxiliary angle (i.e., winding angle) by the dip tank of the moving speed and the mandrel rotational speed of the ratio of the control, dip tank of the translational movement of the computerized machine - electric control. The number of winding layers is gradually increased to reach the designed wall thickness. After the winding is completed, the resin in the product is basically cured. After curing, the mandrel is removed from the FRP pipe.
Continuous fiber winding process (belonging to the continuous method): The process is that the tube passes through a feeding station supplying a mixture of resin prepreg untwisted roving, short-cut FRP fibers, and resin sand in motion, and the tube is made in a continuous progression of the mandrel.
Centrifugal casting process (belongs to the fixed-length method): in this process, with cut glass fiber reinforcement and sand, fed into the steel mold fixed on the bearing, in the steel mold end injected with catalyst unsaturated resin, so that it impregnated with reinforcement, under the action of the centrifugal force, the resin displaces the air in the fibers and filler, thus creating a dense composite material with no pore space, due to the centrifugal force of the Due to the centrifugal force, the inner wall of the tube forms a smooth, polished inner surface layer rich in resin, and the tube is cured at a higher temperature. With this method of manufacturing the tube is also known as fiberglass reinforced plastic sandwiched pipe.
Worldwide, there are more manufacturers using the reciprocating fiber winding process than the other two production processes, one of the reasons is that the reciprocating fiber winding process has a wider range of applications and better applicability of the FRP pipe. Legend Grid thickness (mm) Rib back thickness (top/bottom) Square size (mm) Whole board size (mm) Weight (kg/m2) Open rate (%) 13 0/5.0 38×38 1220×3660,1220×4000,1220×2440,915×3050,1268×4010 0 78 14 0/5.0 38×38 1220×3660,1220×4000,1268×4010 0 78 14 0/5.0 38×38 1220×3660,1220×4000,1220×4010 0 78 14 0/5.0 38×38 1220×3660,1220×4000,1220×4010 0 78 3660,1220×4000,1220×2440, 915×3050,1264×4010 5 78 20 0/5.0 38×38 1220×3660,1220×4000, 1524×4010,997×3012 8 65 25 0/5.0 38×38 1220×3660,1226×4010 x4010,1532×4010,915×3050,1524×4000,997×3012 3 68 30 0/5.0 38×38 1220×3660,1220×4010,915×3050, 1524×4010 6 68 38 0/5.0 38×38 1220×3660,1220×4010, 1524 ×4038, 2100×4010,998×4010,1220×2440, 915×3050,1532×4010,1532×3050, 1000×4000 5 68 50 5/7.5 Heavy duty 38×38 1220×4010,1220×3660,1230×4010, 1220×2440 , 915×3050 42 56 60 5/8.5 Heavy load 38×38 1230×4010 4 54 70 0/9.0 Heavy load 38×38 1230×4010 8 49 How to choose fiberglass grating
1, to determine the need for fiberglass grating is used to do what, that is, to make clear its goal of use. Such as car wash manufacturers to buy grating is ready to use the grating as a car wash bearing plate.
2, after determining the use of fiberglass grating, it is time to determine the size and specifications of the grating used. Through the manufacturer's relevant introduction can probably have a certain understanding of the grating, such as in the car wash, you can choose 2.5cm thickness of the grating or 3.8cm thickness of the grating. In the electroplating equipment factory, commonly used 2.5cm thickness of the grating. And in the sewage treatment plant, chemical plant is often 3.8cm thickness of the grating.
3, after selecting the appropriate thickness of FRP grating, to calculate the size of the grating plate when used. Such as in the car wash. The size of a car wash space is mostly 1.220m * 2.440m, and the size of the FRP grating is 1.220 * 3.660, which needs to be cut before it can be put into use.
4, choose the right raw materials to make the FRP grating plate that meets the requirements, such as used in chemical plants or sewage treatment plants grating, you need to choose the higher corrosion resistance of the resin for production. Fiberglass grating laying can be modified by tractor or automobile special equipment for laying, generally manual laying. Fiberglass grating each roll of product paper tube ends are marked with orange and blue markings, in the beginning of laying before, should choose the rubber side down, determine the above marking color each in a certain end, in order to facilitate the construction and will not be the rubber side of the laying of the wrong. Fiberglass reinforced plastic (FRP) grating laying, should keep it flat, tension, two sides aligned, can use a level ruler to do flat, so that the FRP grating has effective tension, after paving and then run over with a clean steel wheel roller. The FRP grating is clean and bright, more colorful. Commonly used FRP grating with self-adhesive and without self-adhesive two kinds. With self-adhesive can be laid directly on the leveled grass-roots level, without self-adhesive usually use stainless steel ring and steel nail fixing method. Ordinary road sections are used without self-adhesive fiberglass grating, fixed materials required are: ① 50 × 50 × 0.3mm fixed stainless steel ring, required to be leveled without warping, the perimeter should be chamfered; ② 2-inch steel nails. Fixed steel nails or stainless steel ring method of laying FRP grating, first one end of the fixed ring and steel nails fixed in the substructure has been sprinkled with adhesive layer of asphalt, steel nails can be hammered or nail shot into. Then the grille longitudinal tension and segmented fixed, each segment length of 2 ~ 5 m. Can also be segmented according to the spacing of the shrinkage joints, steel nails are located in the joints gap. Requirements for grating tensioned fiberglass longitudinal and transverse are in a straight tension state. Fiberglass reinforced plastic grating lap for longitudinal lap, lap width of not less than 20mm, transverse lap width of not less than 15mm, longitudinal lap should be according to the direction of asphalt paving will be placed on top of the next one. Fixing can not be nailed on the glass fiber reinforced plastic grating, can not use the hammer to directly hit the glass fiber reinforced plastic grating, fixed if found broken steel nails or loose rings, it is necessary to be re-fixed. Fiberglass grating paving and fixing is completed, must use rubber roller roller moderately crushing stabilization, so that the FRP grating and the original road surface bonding firm.
In the actual construction, some construction units use sprinkle viscose layer oil directly after paving glass fiber grating, roller immediately followed by crushing, its effect is better, glass fiber grating is not easy to wrinkle. In the actual operation process, the construction quality of good and bad on the future use of fiberglass grating has a great impact.