Manufacturing Method of Centrifugal Casting Alloy Using Waste Copper Scrap and Improvement of Mechanical Properties

摘要

1. TECHNICAL FIELD OF THE INVENTION;Manufacturing method of centrifugal casting alloy using waste copper scrap and improvement of mechanical properties.;2. The technical problem to be solved by the invention;The present invention provides a method for producing a Cu-Sn-Ni-Pb-Sb-Pb alloy for centrifugal casting using scrap copper scrap and also the mechanical properties of the alloy prepared therefrom, such as tensile strength, hardness, elongation, impact strength, and the like. It is to provide the additive of deoxidizer (Cu-P) and the low temperature homogenization for optimum treatment conditions (treatment temperature and time).;3. Summary of Solution to Invention;In adjusting the copper alloy for centrifugal casting using waste copper scrap, the composition ratio was Sn 512 to 14 (wt% is equal to or less), Ni 1.4 to 1.6, Pb 1.3 to 1.4, Sb 0.46 to 0.48, P 0.06 to 0.08, It is characterized by blending with Cu bal, and the deoxidizer and the addition amount are Cu-30% P, 0.5kg Cu-30% P / charge, and as the deoxidizer addition method, it is put in a copper pipe capsule and then added to the molten metal by adding it to the bottom deposition solution. It was made to be.;4. Important uses of the invention;Manufacturing method of centrifugal casting alloy using waste copper scrap and improvement of mechanical properties.