Increased hardness of brass casting method:
Brass (72.5Cu-22.7Zn-3.4Al) added cobalt (0.2%,0.4%,0.6%), the study of trace amounts of cobalt, melting and casting technology and processing parameters on mechanical properties of strip rolling effect. Exploring the use of brass instead of the present widespread use of flexible copper alloys. Results show the feasibility of phosphor bronze: cast alloys of cobalt can effectively reduce the grain size and shape of changing grain, increased tensile strength, hardness, and that alloy has good ductility. cobalt-aluminium brass, add 0.4%. Used reasonable of processing process production out of brass with has than Tin p bronze more excellent of performance, 0.25mm thick of with material, its tensile strength can up 840.4MPa, elongation rate for 2.8%; Vickers hardness value for 228, bit hard State of QSn6.5-0.1 with material of tensile strength maximum value (805MPa) improve has 4.4%, meet elastic components of using requirements; while due to the brass in the contains 22.7% of zinc, can effective reduced cost, has actual application value.