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    • 83. 发明专利
    • Powder material for melt spraying
    • 粉末喷涂粉末材料
    • JPS5767159A
    • 1982-04-23
    • JP14055480
    • 1980-10-09
    • Nissan Motor Co Ltd
    • DATE HIROHIKOKISHIDA KATSUHIROMAKUCHI YUTAKAHIRAO SUMIO
    • C22C38/00C23C4/06
    • C23C4/067
    • PURPOSE:To eliminate the abrasion of a die, the seizure of die and a panel, or a galling flaw of the panel that occur particularly during press working by melt spraying a powder material for melt spraying of a specific composition thereby forming a melt sprayed layer of high resistances to abrasion galling. CONSTITUTION:A powder material consisting of >=40 Ni, 3-8 Si, 0.1-0.5 B, 0.3-2 Nb, 0.2-1.5 C by wt%, and the balance Fe and unavoidable impurities are melt sprayed. Here, the Ni prevents seizure and galling phenomena, and requires the above-mentioned amount. The Si increases hardness, and below the lower limit, there is virtually no effect and abrasion resistance is insufficient. Above the upper limit, the abrasion resistance does not increase markebly, and conversely, it shows a tendency toward degradation of galling resistance. The B increases hardness and improves abrasion resistance and the effect thereof is much higher in the presence of the C, but above the upper limit, it leads to cracking of the melt sprayed layer and degradation in machineability after melt spraying. The Nb lowers crack sensitivity and improves abrasion resistance, but above the upper limit, it lowers galling resistance. The C improves abrasion resistance but above the upper limit, it flows the panels.
    • 目的:为了消除模具的磨损,通过熔融喷涂粉末材料熔融喷射特定组合物,特别是在压制加工期间特别是在特定组合物上发生模具和板的咬合或焊接缺陷,从而形成熔喷层 耐磨损性高。 构成:熔融喷涂由> = 40Ni,3-8Si,0.1-0.5B,0.3-2Nb,0.2-1.5C%(重量)组成的粉末材料,余量为Fe和不可避免的杂质。 这里,Ni可以防止发作和磨损现象,需要上述量。 Si增加硬度,低于下限,几乎没有效果,耐磨性不足。 高于上限时,耐磨性不会增加,相反,它显示耐磨损性降低的趋势。 B增加硬度并提高耐磨性,并且其在C存在下的效果高得多,但是高于上限时,熔融喷涂层会导致熔体喷涂层的破裂和加工性降低。 Nb会降低裂纹敏感性并提高耐磨性,但高于上限时会降低耐磨损性。 C提高耐磨性,但高于上限,它流动面板。