THE PROPERTIES OF Fe-P-C-Cu SYSTEM ALLOYS AND THEIR SIZE SHRINKAGE AFTER SINTERING

This article deals with the effect of the different amounts of copper and carbon additions and sintering temperature on the properties of Fe-P-C-Cu system alloys and their size shrinkage after sintering. It is shown experimentally that the satisfactory results will be obtained, if the composition of the alloy is Fe-0.6%P-1.9%C-0.7~1.0% Cu which is sintered at 1090~1110℃ for 2.5h. The experimental contrast of the properties and size shrinkage between Fe-P-C-Cu alloys and Fe-C-Cu alloys was made when these alloys were used in making bicycle bell gears.