Directory of companies by products - Plastic pressure welding

Plastic Butt Welding - Pressure Welding Principle of welding butt Butt welding ( or pressure welding) welding is a contact

ie welded area is heated by contact with body nahrievacím . The welding of pipes is a so-called . mirror

the welding of plastic sheets is nahrievacia bar . Welded ends before the actual pressing nahrievacie body is worked smoothly - in a plastic tube with plane plane . Then check the element - for welding pipes must not be greater than 0.1 x the thickness of pipe walls and welded areas shall be cleaned of grease and mechanical impurities. Consequently

under clearly defined

so called . adjusting the pressure on the ends welded pressed nahrievacie body

heated to welding temperature. After the first phase of the heating welded ends

ie . adaptation is created around the welded area výronok . Then the pressure is reduced to a minimum and begin the second phase of the heating

so called . overheating in depth. After the second phase of the welded area to postpone nahrievacieho body

it is removed from welded areas

and as soon as possible to the heated ends of the welded parts attached to each other. This phase is called displacement . Consequently

the pressure increase phase begins when the gradually increasing the downforce on the ends welded to the value of the welding pressure. Under the pressure to remain welded to the weld joint cools down

ie throughout the cooling phase . The entire welding process are the important physical quantities : time

temperature and pressure. These standards are specified depending on the type of welding material

wall thickness and diameter of the pipe.