摘要:
A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevitable impurity at 0.10% or less, and balance of Fe and other inevitable impurities by mass and has a density of 7.1 Mg/m 3 or higher, 65 HRA or higher as a hardness in the gear teeth, and a martensite, sorbite, bainite, or their mixed structure as a cross-sectional microscopic structure in at least the gear teeth and the peripheral area of the gear teeth.
摘要翻译:用于无声链的烧结链轮通过简单的致密化方法从具有少量添加元素的材料获得。 烧结链轮由具有1〜2%的Cu,0.5〜0.8%的C,0.10%以下的不可避免的杂质的Mn,以及以质量计算的Fe等不可避免的杂质的平衡, 齿轮齿的硬度为7.1Mg / m 3以上,65HRC以下的密度,至少在齿轮齿中为马氏体,索氏体,贝氏体或其混合结构,作为横截面微结构 齿轮齿的周边区域。
摘要:
A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevitable impurity at 0.10% or less, and balance of Fe and other inevitable impurities by mass and has a density of 7.1 Mg/m 3 or higher, 65 HRA or higher as a hardness in the gear teeth, and a martensite, sorbite, bainite, or their mixed structure as a cross-sectional microscopic structure in at least the gear teeth and the peripheral area of the gear teeth.
摘要:
A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of the gear teeth by forming by rolling, having a surface hardness of 700 HV or higher, and is useful for a crankshaft, a cam shaft, a balancer shaft, or a water pump shaft of an internal combustion engine:
(1) an Fe-Mo-C based sintered alloy containing Mo at 1.0 to 2.0% by mass; (2) an Fe-Mo-Ni-C based sintered alloy containing Mo at more than 1.0 and not more than 2.0% by mass, and Ni at more than 1.0 and not more than 2.5% by mass, or (3) an Fe-Mo-Ni-Cu-C based sintered alloy containing Mo at 0.3 to 1.0% by mass, Ni at not less than 1.5 to less than 3.0% by mass, and Cu at 1.0 to 2.5% by mass.
摘要:
A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of the gear teeth by forming by rolling, having a surface hardness of 700 HV or higher, and is useful for a crankshaft, a cam shaft, a balancer shaft, or a water pump shaft of an internal combustion engine:
(1) an Fe-Mo-C based sintered alloy containing Mo at 1.0 to 2.0% by mass; (2) an Fe-Mo-Ni-C based sintered alloy containing Mo at more than 1.0 and not more than 2.0% by mass, and Ni at more than 1.0 and not more than 2.5% by mass, or (3) an Fe-Mo-Ni-Cu-C based sintered alloy containing Mo at 0.3 to 1.0% by mass, Ni at not less than 1.5 to less than 3.0% by mass, and Cu at 1.0 to 2.5% by mass.
摘要:
A cam lobe piece of a built-up type camshaft for an internal combustion engine. The built-up type camshaft includes a hollow shaft fixedly inserted in a shaft opening of the cam lobe piece upon diametrical expansion of the hollow shaft. The cam lobe piece comprises a base circle section having the shaft opening, and a cam lobe section formed integral with the base circle section. In this cam lobe piece, the cam lobe piece is formed of a ferrous sintered material which has a density (ρ) meeting the following equation ρ (g/cm 3 ) ≥ - 3/8 × t + 8.9 where t is a thickness (mm) of the base circle section in radial direction.
摘要翻译:用于内燃机的组合式凸轮轴的凸轮凸角片。 该组合式凸轮轴包括一根空心轴,该空心轴在空心轴的径向膨胀时固定地插入凸轮凸角片的轴孔中。 凸轮凸块包括具有轴开口的基圆部分和与基圆部分一体形成的凸轮凸角部分。 在该凸轮凸角片中,凸轮凸角片由具有满足以下等式的密度(ρ)的铁质烧结材料形成ρ(g / cm 3)≥-3/8×t + 8.9,其中t是厚度(mm) 的基圆部分在径向方向上。
摘要:
A cam lobe piece of a built-up type camshaft for an internal combustion engine. The built-up type camshaft includes a hollow shaft fixedly inserted in a shaft opening of the cam lobe piece upon diametrical expansion of the hollow shaft. The cam lobe piece comprises a base circle section having the shaft opening, and a cam lobe section formed integral with the base circle section. In this cam lobe piece, the cam lobe piece is formed of a ferrous sintered material which has a density (ρ) meeting the following equationρ (g/cm3) ≥ - 3/8 × t + 8.9 where t is a thickness (mm) of the base circle section in radial direction.
摘要:
A sintered body is produced by preparing a metal powder mixture, compacting the metal powder mixture to provide a green compact and then sintering the green compact. The metal powder mixture includes a fine metal powder having a particle size of 75 µm or smaller, a graphite powder in an amount of 0.1 to 1.0% by mass and a powder lubricant in an amount of 0.05 to 0.80% by mass based on a total mass of the metal powder mixture.