locomotive wheel slip in railway transport is a very actual problem for operation
process especially on the main tracks and tracks between industrial oil company and
power- generating stations, which always need to supply by oil products.
This res
earch included the conclusion of the reasons leading to the occurrence of the
event wheel slip as well as study the technical reality of the work of sand management
system in the locomotives and conduct analyzes and assessments of the substance sand
used to overcome such situation with the suggestion of suitable alternatives to raise the
adhesion coefficient between the railway wheels and improve an operating circumstances
animation tools Line.
Other causes include the contact of oil with the flanges and rims of wheels, which
reduces adhesion with the surface of the rails, and a general loss of traction on steep
gradients when pulling heavy loads.
This study deals with the friction and wear behavior of coating layers (fluoride and Graphite).The coatings are thermally sprayed on cast iron disks. Sliding is performed between cylindrical pins manufactured from organic brake linings and the coated
and uncoated disks. The coatings are characterized by measuring their hardness, porosity, and corrosion resistance. The corrosion resistance of the coating is tested by exposure to Nacl for 150 hours; the coating layer has had the best corrosion resistance. The friction and wear tests are conducted under contact pressures of (1.5 MPa to 7 MPa) and sliding speeds of 1 and 3 m/sec.