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1981年4期《铸工》刊出了《双金属轴承离心浇铸的合金凝固特性与工艺参数的选择》一文, (以下简称“双文”)文中提出了一些选择双金属轴承离心浇铸工艺参数时应考虑的基本问题,给人以很好的启发.文章指出:为了除去金属液中的夹杂和气体,所需时间τ_1应为10秒;并用实例的计算论证了τ_1=10秒的正确性.在实例计算中,取杂质的重度为γs=6.5克/厘米~3,铜合金液的重度γ=8.4克/厘米~3,其动力粘度μ=0.034泊,杂质由钢套内壁向自由表面的内浮距离为5毫米,而计算后得到的
1981, “Casting” published a paper entitled “Selection of Solidification Characteristics and Process Parameters of Biconcave Centrifugal Casting” (hereinafter referred to as “double text”). Considering the basic problems, give a very good inspiration.The article points out: In order to remove the inclusions and gases in the liquid metal, the required time τ_1 should be 10 seconds; and the calculation of an example demonstrates the correctness of τ_1 = 10 seconds. In the calculation of the example, the weight of the impurities is γs = 6.5 g / cm 3, the weight of the copper alloy liquid is γ = 8.4 g / cm 3, and the kinetic viscosity μ is 0.034 poise. Floating distance of 5 mm, while calculated