High temperature welding cloth

High temperature welding cloth is plastic steel door and window for welding of high temperature resistant anti sticking cloth for short, is the plastic window assembly welding equipment used in coating, isolation of the heating plate of high strength fiber cloth, it is with high strength glassfiber fabric as substrate, repeatedly impregnated sintered polytetrafluoroethylene solution into the. High temperature welding clothas a consumption of plastic steel door and window welding parts on the machine and its role can not be ignored. It features high temperature resistance so that it can maintain the stability of material welding itselfvarious data work in high temperature, can not generate obviousshrinkage deformation; and the coefficient of friction surface is extremely low so that the residue produced in the welding process is not easy to stay in the high temperature welding cloth surface, the surfacetemperature of welding cloth smooth, finish directly affect the weldingeffect and strength. If the poor quality of high temperature welding cloth,can really play a role from the type, will produce welding residueaccumulation in the self-adhesive welding cloth, every time before welding need to clear the debris, this will greatly reduce the efficiency of production. High quality high temperature welding cloth must have heatevenly, high strength, good heat resistance, anti adhesion, low coefficient of thermal expansion characteristics.

(a) high temperature welding cloth quality mainly depends on the

The strength of the fiber fabric

Glass fiber cloth of high quality, high temperature welding clothcompressive strength and the impact strength is high, the service life is long; otherwise it is easy to damage. Tensile strength of high-quality high-temperature welding cloth, high stiffness and good impact resistance.

Because the glass drawing method of alkali free glass, air spinning, andweaving machine and CNC filament technology control defects and impregnation sealing of advanced technology, and high quality welding cloth has the characteristics of high temperature glass fiber high strength, small diameter, uniform thickness, brittleness, the fabric surfacetightness uniform, low impurity etc.. In general, high quality and high temperature welding cloth base material for fracture rate was only 2% in the textile defects before, and rarely, every one hundred square metreonly 40 - 50 defect.

The quality of PTFE and glass fiber impregnated with PTFE Technology

PTFE quality will directly influence the friction coefficient of surfacewelding cloth at high temperature. Glass fiber impregnation of advanced technology makes high temperature welding cloth in the same substrateunder the premise of strength can be improved, and the backwardprocess can create PTFE impregnated layer cracking and the early end of service life.

Thermal conductivity, excellent high temperature welding cloth good,small coefficient of thermal expansion deformation

Because of the special manufacturing technology of high performanceglass fiber yarn of high quality high temperature welding cloth used,make its thermal performance is especially outstanding, especially in theglass fiber made of glass fiber fabric fast, uniform thermal conductivity onheat transfer. In addition, because the glass fiber cloth used CNC loom control fiber in the weaving process tightness, makes the high-qualityhigh temperature welding cloth small thermal expansion coefficient, that is, when almost no deformation in high temperature.

At present the development of plastic steel door and window of China'sindustry is in full swing, competition is becoming increasingly fierce, the high temperature of welding cloth will play no small in the development of plastic steel door and window industry also role.

(two) effect of high quality high temperature welding cloth is very important to improve the quality of plastic door window welding with,specific performance in the following:

The use of high-quality high-temperature welding cloth can greatly improve the weld strength of plastic doors and windows.

In the plastic door and window quality test, the welding angle intensitygreater than 3000 Newton is stipulated by the state qualified standard welding window. So, false welding phenomenon is caused by the corner strength decreased, the main reason affecting the quality of plastic doors and windows. False welding we often say, refers to the UPVC sectionheating and melting in the self-adhesive welding cloth formed on the surface of residues, a long time because of overheating andcarbonization, the welding surface so that these residues adhesionprofiles, so that the section can not be all tightly integrated processprofile melt, docking, compressing, local welding real phenomenon.Then, anti adhesion properties of high temperature surface welding clothis one of the important factors influencing the angular intensity. Becauseof excellent high temperature welding cloth with anti stickingperformance, good so, the use of high-quality self-adhesive welding clothcan reduce the profile welding welding slag in section welding surfaceresidue, the profile welding fully, reduce false welding, improve the welding angle intensity.

In addition, the section after heated melting on schedule, but alsoimprove the doors and windows profiles of solid welding, machining accuracy, reduce the window into the window of one of the factors of stress, improve the angular intensity. Because our country welding plate manufacturing process equipment is still relatively backward, heated to 250 DEG C in the welding machine rated, although temperature tableshows the temperature is constant, but the welding plate surfacetemperature of each point is still quite a large difference