Sliding part

Chassis and housings for electrical and electronic equipment, sliding parts in video recorders, disk supports in CD players. .. 

Plate bearings for printers, cable guides for printer heads bearings and sockets for photocopiers sliding parts and guiding rollers for high-speed printers and photocopiers. .. 

SiC-BN composites show good thermal conductivity. The electrical resistivity depends on the BN content and can be adjusted from a few Q/cm to more than 1010 Q/cm. When the SiC content of the composites is high, the composites can be used as cutting tools [135]. BN additions reduce the friction coefficient. Thus these composites are used for sliding parts [136],... 

Without the assumption of a frictionless piston, we cannot imagine a reversible process. If the piston sticks because of friction, a finite mass must be removed before the piston breaks free. Thus the equilibrium condition necessary to reversibility is not maintained. Moreover, friction between two sliding parts is a mechanism for the dissipation of mechanical energy into internal energy. 

For the manufacture of sliding parts, POM blends were developed with PTFE [Ishioka,... 

POM Blends POM/PDMS adsorbed on silicone for sliding parts with high wear resistance Takayama et al., 1991... 

All locations where mechanical friction of parts take place should be eliminated as they can produce small metallic contaminations in the product. Rotating or sliding parts should be avoided. 

Polymers can be used in the sliding parts of joints. Poly(tetrafluoroethy-lene) (PTFE) was proposed, thanks to its excellent sliding properties. However, PTFE does not resist friction under compression and is rapidly crushed, leading to loosening of the prosthesis. Ultra-high-density polyethylene is used in the hip when the head of the femoral part is made of stainless steel, and in the joint of the tibia in the knee prosthesis. 

For the manufacture of sliding parts, POM blends were developed with PTFE (Ishioka 1991) with PVDF (Shibata et al. 1992) with either wax, PTFE, silicone oil, or PEG and with EBA-GMA (Takahashi and Kobayashi 1993). Later blending technology of POM involved introduction of the reactive end groups - it makes compatibilization with other polymers relatively simple. 

Boron-carbon-nitride ceramic is deposited on iron-based sliding parts by chemical vapor deposition (CVD) it is used as rotary compressor shafts, in order to improve the wear resistance [1 to 5]. Such B-C-N coatings have also been applied to dynamic pressure air bearings [6]. In gas-cooled nuclear reactors, °B-enriched B-C-N can be deposited by CVD in the fluid channels of the fuel elements for permanent deactivation in case of an emergency [7]. Radiofrequency or microwave-enhanced CVD is employed in order to deposit a diamond carbon and (3-BN superlattice structure [8]. 

The experiments in this work were performed with iron, sputter-deposited onto a Ge crystal, a steel cylinder as the sliding part, and commercial ZnDTP as a lubricant. The normal load applied onto the cylinder was 7 N, the Hertzian contact area 0.1 mm, the average pressure 34 MPa, and the mean sliding velocity 24 mm/min. 

Sliding parts that could fault during operation (for example, rack-mounted circuit breakers), and... 

At the end of the production chain is the assembly of all of these parts. As a rule, the molds consist of the following shell side, core side, slide parts, hot runners. 

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