Polyimide Direct Formed Parts

With direct forming precise direct formed components are manu­fac­tured from high tem­per­a­ture plastics. High-speed automatic presses (mechanical or hydraulic) compact the powder in the mould cavity. The parts are then sintered for some hours at high tem­per­a­tures with the exclu­sion of oxygen.  

Outstanding properties 

Direct formed parts made of TECASINT show less distortion and avoid weld lines. In particular, Direct formed parts are mainly used for applications which experience high loads at elevated temperatures in demanding applications at high speed and pressure even without any lubrication.
Thanks to high purity and excellent temperature resistance from -270 °C to + 300 °C Direct formed parts made of TECASINT are extremely suitable for use in vacuum applications as well as in the extreme temperatures like cryogenic and high temperatures. 

Economic effiency

With direct forming technology less material is used for the part production compared to other production methods. For simple Direct formed parts no post-machining is necessary. Short cycle times result in economical series production from batch sizes larger than 1000.

TECASINT 6000 product line from Ensinger includes four innovative non-melting polyimide grades. TECASINT 6000 is only suitable for the direct forming process. These polyimides are characterised by outstanding thermal-oxidative stability and high mechanical strength. Mass loss at a temperature of 400 °C is marginal,  therefore it is ideally suited for high loaded applications with use temperature of use above 300 °C. 

Significantly higher modulus, excellent wear and friction properties as well as high creep resistance  distinguish TECASINT for high demanding applications where other high performance materials will fail.

The TECASINT 6000 family from Ensinger offers the following modifications for the direct forming process:

• Unfilled polyimide - TECASINT 6012 natural
• Graphit reinforced polyimide - TECASINT 6022 black
• Polyimide with high graphite filling - TECASINT 6032 black
• Polyimide modified with PTFE and graphite - TECASINT 6062 black

The preferred field s of applications for direct formed polyimide parts are:

wear rings, bearing discs, bearing bushes, piston and axial sealing rings, hot glass handling parts, sliding bearings, chain bushings, valve seats, friction rings and insulators