Teflon plate is a new type of sealing product, a breakthrough of new technologies at home and abroad in the field of sealing. It changes the traditional use of static sealing, is a new concept of practical sealing belt, and is a functional sealing product with broad significance. Teflon plate, with its performance, replaces Teflon sealing belt and other sealing materials, and is more and more popular and widely used in various types of sealing industries; Teflon plate is a new type of sealing product, which can replace gaskets, gaskets and other sealing products. It is a very novel and unique sealing material material manufactured by processing technology. It is a continuous white pure Teflon product, which has good flexibility, compression elasticity, creep resistance, high and low temperature resistance, corrosion resistance, chemical property, self lubrication Sealing performance, easy to install and use, is a good sealing material for chemical, petrochemical, food and beverage, electronics, power, metallurgy, shipbuilding and other industries; Because of its softness, large compression ratio and easy three-dimensional space forming, the tetrafluoro plate can be embedded into micro cracks and damages to repair cracks and plug leaks, especially in the connection of acid resistant, alkali resistant, anti-corrosion and non-metallic equipment, large diameter containers, which can effectively protect the device connection of brittle materials. For non-metallic devices such as glass, ceramics, graphite, plastic, etc., it can compensate for errors caused by defects, machining, rigid deformation, installation dislocation, etc., balance the uneven preload, and effectively solve the leakage problem of various facilities under complex conditions.
Teflon board (also called Teflon board, Teflon board, Teflon board) is divided into two types: molding and turning. Its products have a wide range of uses, with comprehensive properties: high and low temperature resistance (- 192 ℃ - 260 ℃), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non adhesion, harm and other excellent characteristics. Polytetrafluoroethylene (abbreviated as Teflon or [PTFE, F4]), with Chinese trade names of "Teflon", "Teflon", "Teflon", "Teflon", "Teflon", "Teflon", etc.
Polytetrafluoroethylene plate is made by turning polytetrafluoroethylene molding blanks, which is used as gasket seals and lubricating materials for working in various media, as well as electrical insulation parts used at various frequencies. Capacitor dielectric, track line insulation, electrical instrument insulation, etc. It has excellent dielectric properties, chemical properties, good corrosion properties and a wide range of use strength. The quality of our products is reliable, the price is favorable, the delivery is fast, and the service is considerate. Welcome to contact us.
Main construction methods of stair sliding support
In the specific construction process, the PTFE plate 5mm stair base plate, when processing the reinforcement, according to the drawing requirements, the reinforcement of the stair section at the support is disconnected and closed, and the formwork erection and concrete pouring are constructed by sections; In the construction process, the processing, positioning, installation and fixation of PTFE board are added to the sliding support of PTFE board stairs.
1. Construction process
After the binding of the supporting member reinforcement → remeasure its elevation and horizontal position → pour the supporting member concrete → lay and fix the polytetrafluoroethylene board → erect the stair section formwork → clean the surface of the polytetrafluoroethylene board → remeasure its elevation and horizontal position and fix it → bind the stair section reinforcement → pour the stair section concrete → maintain.
2. Surveying and setting out
(1) Pop up the positioning at one tread of the stair and pop up the ink line.
(2) According to the atlas and the specific dimensions of the stairs in the drawings, the length of the PTFE board is the length of the stair board, and the width is shown in the specific construction drawing, and the processing drawing is drawn.
3. Base plate processing
(1) According to the processing drawings, the PTFE board shall be reasonably discharged, and the profile cutter shall be used for cutting.
(2) The plates shall be processed and numbered according to the drawing requirements, and transported to the installation site.
4. Installation position treatment
After the installation axis of the PTFE board is popped out, the installation part shall be polished with a grinder, and the overall level shall be on the same plane.
5. Installation and fixation
Place the polytetrafluoroethylene board in the control line, use flat headed studs or steel nails, set in two rows in the long direction, 200 in the wide direction, and use the polytetrafluoroethylene board stair slider to fix it on the concrete structure.
How to use the Teflon plate: basically, there are different installation methods for the Teflon plate during the installation process. In fact, in the process of our construction, we also have our own use methods. Many friends want to know how to use the Teflon plate; In order to facilitate the replacement of all the supports during the use of the PTFE plate, more effective connection should be made at the place where the underframe is connected at the beginning. In addition, the whole PTFE plate will have more steel grooves, which can increase a series of moisture-proof performance in this way. At the same time, they can also increase the seismic performance in this way. In fact, in the process of installation, we will have different positions, or in the case of a certain depth of groove for installation; During the installation of the Teflon plate, we must pay great attention to the installation of the dust cover. In addition, when the whole dust cover is used, a 5mm thick rubber sheet should be used to set it. There will be some stainless steel strips around, and even stainless steel screws will be used to fix it, The structure of the entire rubber bearing is also different. Compared with some ordinary rubber bearings, they are also different. In terms of shape, rubber bearings can also be divided into different types. Ordinary rubber bearings are less than 30 meters relative to some spans, and the displacement is relatively small.
Teflon sliding plate type rubber bearing is a rubber bearing, also known as Teflon sliding plate type bearing (GJZF4, GYZF4 series), which can be made by gluing a layer of 1.5mm-3mm thick polytetrafluoroethylene plate on the surface of ordinary plate type rubber bearing. In addition to all the functions of GYZ series rubber bearings, the low friction coefficient between the polytetrafluoroethylene plate (F4 plate) and the stainless steel plate at the bottom of the beam makes the horizontal displacement of the superstructure not limited by the shear deformation of the bearing itself, and can meet the large displacement needs of some bridges. The plate rubber bearing not only has the function of spherical crown rubber bearing, but also is particularly suitable for bridges with large displacement. Widely used in mines, machinery, electronics, mechanical equipment, kitchen equipment.
Teflon plate rubber bearing not only has excellent technology and performance, but also has the characteristics of simple structure, low price, no maintenance, easy replacement of shock absorption, low building height, etc. Therefore, it is used in the scope of bridge a. It is used as a movable support: mainly used in the continuous plate bridge with simple supported beam of long-span bridges with a span>30 meters If the surface concrete flatness of bearing pad stone of multi span continuous beam bridge is not high. When the support is installed, it will deform prematurely during the operation of. The reason for the installation and maintenance of the defects of the plate rubber bearing, and the uneven surface of the bearing pad stone. After the support is placed, there will be local voids and uneven force on the surface. The elevation of the top surface of the bearing pad stone is not well controlled, so that the force on each bearing at the bottom of a beam is uneven, especially for the two bearings placed at one end, the bearing bias is serious, and the surface of the bearing is abnormally bulging or partially empty. The floating sand and oil stain on the surface of the pad stone are not cleaned up, which leads to premature aging of the bearing. When the beam body has longitudinal and transverse slopes, the slope adjustment wedge at the bottom of the beam on the bearing surface is not placed, which causes the bearing to have eccentric pressure, initial shear deformation and other phenomena.
