REPAIRING EXCAVATOR'S TRACK CHAIN LINK, FITTING BUSH AND PIN ON HYDRAULIC PRESSING MACHINE

Описание: An excavator track link is a hardened steel component that connects with pins and bushings to form the continuous, flexible chain (track link assembly) of a crawler excavator undercarriage.
Mechanical testing or engineering tests are performed to determine various mechanical properties of materials such as strength, hardness, ductility, toughness, brittleness, etc. The precision results of these tests is utilised to determine suitability of materials for the field application. ...
charpy or impact testing is widely used to measure the toughness and ductility of the weld metal, base metal. Tensile testing of welds in place, with weld metal, HAZ, and base metal, allows an overall strength to be determined but usually cannot provide the strengths of the individual parts of the weldment.
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This video intends to give an idea of tests that a welder goes through in order to be part of a specific welding project ...and it also gives the basics explanations of PQR, WQR, WPS...
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