Classification and characteristics of CS materials
| Type of CS | Advantages | Disadvantages |
|---|---|---|
| Pure metal contact strip | Low cost; high electrical conductivity; large current-carrying capacity; long service life; high mechanical strength | Poor self-lubricating ability; causes severe wear of the CL; limited resistance to high temperatures; prone to adhesion; susceptible to melting |
| Pure carbon contact strip | Good self-lubricating properties; significant friction reduction; good high-temperature resistance; adequate electrical conductivity; minimal damage to the CL; low mass | Low mechanical strength; prone to cracking or chipping under strong impacts; high wear rate; limited current-carrying capacity |
| Powder metallurgy contact strip | High mechanical strength; good wear resistance; good electrical conductivity; good impact resistance; moderate surface hardness | Poor self-lubricating performance; severe wear of the CL; limited resistance to electrical arcing |
| Metal-impregnated carbon contact strip | Good electrical conductivity; high thermal stability; good wear resistance; high mechanical strength; low contact resistance with the CL; long service life; good resistance to arc erosion | High maintenance cost; poor impact resistance; prone to cracking or chipping |
| Composite contact strip | High mechanical strength; low weight; good resistance to electrical arcing; good wear resistance; good thermal stability; excellent impact resistance and self-lubricating properties | High cost; long manufacturing cycle; potential degradation of electrical conductivity; limited high-temperature resistance; susceptibility to thermal decomposition |
| Type of CS | Advantages | Disadvantages |
|---|---|---|
| Pure metal contact strip | Low cost; high electrical conductivity; large current-carrying capacity; long service life; high mechanical strength | Poor self-lubricating ability; causes severe wear of the CL; limited resistance to high temperatures; prone to adhesion; susceptible to melting |
| Pure carbon contact strip | Good self-lubricating properties; significant friction reduction; good high-temperature resistance; adequate electrical conductivity; minimal damage to the CL; low mass | Low mechanical strength; prone to cracking or chipping under strong impacts; high wear rate; limited current-carrying capacity |
| Powder metallurgy contact strip | High mechanical strength; good wear resistance; good electrical conductivity; good impact resistance; moderate surface hardness | Poor self-lubricating performance; severe wear of the CL; limited resistance to electrical arcing |
| Metal-impregnated carbon contact strip | Good electrical conductivity; high thermal stability; good wear resistance; high mechanical strength; low contact resistance with the CL; long service life; good resistance to arc erosion | High maintenance cost; poor impact resistance; prone to cracking or chipping |
| Composite contact strip | High mechanical strength; low weight; good resistance to electrical arcing; good wear resistance; good thermal stability; excellent impact resistance and self-lubricating properties | High cost; long manufacturing cycle; potential degradation of electrical conductivity; limited high-temperature resistance; susceptibility to thermal decomposition |
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