What Is Welded PTFE Machined Parts

November 20, 2024

What Is Welded PTFE Machined Parts?

Polytetrafluoroethylene welding (PTFE weld) is a welding process. There are two types of PTFE welding: hot press welding and hot air welding. Hot press welding is to heat the two pieces of PTFE material to be welded above the melting point and press the two pieces together under not too much pressure.

Polytetrafluoroethylene in the melting point above (380 ℃) its viscosity is still 1010 ~ 1011Pa - s, even if the temperature is increased will only decompose and do not flow, so the polytetrafluoroethylene material welding is different from other thermoplastics. Hot air welding is with PTFE properties similar to the melt processing of fluoroplastics such as tetrafluoroethylene - perfluoroalkyl energy vinyl ether copolymer (PFA) as a welding rod, hot air will be welded with the welding rod and to be welded PTFE at the same time heated, pressurized, so that the PTFE material through the welding rod to connect together.

teflon welding, commonly referred to as the process of welding polytetrafluoroethylene (PTFE) materials, PTFE is very popular for industrial applications due to its high temperature, corrosion resistance and non-stick properties. However, due to its high melting point and high melt viscosity, conventional welding techniques are difficult to apply to PTFE connections.

For this problem, some special welding methods can be used:

Heat fusion welding: This is a commonly used PTFE welding method, it is by heating the PTFE material to the melting point, and then by pressure to make the two welded parts fusion . The steps include preparation, cleaning the surface, heating the weld area, melting the weld material, and waiting for the weld material to harden to form a good joint.

Electrothermal welding: This is a more complex welding process that requires specialized equipment and techniques. It generates heat by means of an electric current, which locally heats the PTFE to achieve the weld.

High Frequency Induction Welding: It is also a complex process, suitable for thinner PTFE materials. It generates a magnetic field through high-frequency current, so that PTFE is locally heated under the magnetic field to realize welding .

When PTFE welding, special attention needs to be paid to the selection of welding materials and the control of welding parameters to ensure the quality of welding and the sealing of the connection. After the welding is completed, it is also necessary to check the welding quality to ensure that the density of the weld, welding strength and the flatness of the welded surface meets the requirements .

Main Product

Semiconductor integrated sink

　Product Format:

　　ROD/SHEET/tube

　　Product use:

　　1.Semiconductor soldering bath, one-piece bath, various high-purity chemical contact parts

　　Precautions:

　　1. Clean room inspection, packaging

　　2. Lightly put, pay attention to scratches and knocks.

　　3. Stored in a cool and dry warehouse with temperature 25±2℃ and humidity ≤75%.

　　4. It is recommended to store at 25°C for 4h before use.

Machining of welded parts

　Product Classification:

　　Shaped parts: with molding method at room temperature will be made of PTFE resin blanks, in the high temperature sintering, the use of secondary processing and become

　　Product features:

　　1. Has a very low coefficient of friction

　　2. Good self-lubrication

　　3. Superior sealing performance

　　4. Size stability, no deformation

　　Product use:

　　1. Suitable for (-180 ℃ - +260 ℃) temperature of various corrosive media in the seals, anti-corrosion road parts, chemical corrosion-resistant containers

　　2. Wear reduction of mechanical equipment, oil-free lubrication materials.

　　3. Insulating parts under various frequencies

Welding cleaning flower basket