Qingyun Hongsheng Machinery Parts Co., Ltd. is one of the most reliable manufacturers and suppliers of sand-turned casting ball mill casting parts in China. We warmly welcome you to wholesale high quality sand-turned casting ball mill casting parts at low price from our factory. If you have any enquiry about quotation, please feel free to email us.
Sand-turned casting ball mill casting parts
QT450-10
QT 450-10 indicates a fracture strength of 450MPa and 10% elongation. Beite is composed of ferrite and carburization, which is the product of austenite co-analysis. To get the hardness of pearite alone, it must be measured from the co-analysis component (0.77%) steel. The hardness of ferrites can only be measured from steel with carbon content less than 0.0218%.
Standard: GB / T1348-2009 (instead of GB / T 1348-1988)
● Characteristics and scope of application:
Ferrite type ductile cast iron, high toughness and plasticity. At low temperature, the toughness changes to brittleness, but the low temperature impact value is high, and there is a certain resistance to temperature acute change and corrosion resistance. It is widely used for plough, plough column, differential housing in agricultural machinery, for valve body, high and low pressure cylinders in general machinery, and for steel cap for transmission lines.
● chemical composition:
Carbon C: 3.70~4.00%
Silicon Si: 2.15~2.93%
Mn Mn: 0.46~0.66%
Sulfur S: 0.010~0.016%
Phosphorous P: 0.027~0.035%
Magnesium Mg: 0.027~0.050%
tombarthite Re:
Carbon equivalent: 4.3~4.6
● mechanical property:
Tensile strength σ b (MPa): 450
Condition yield strength σ 0.2 (MPa): 250
Elongation rate δ (%): 10
Hardness: 160 ~ 210 HB
● Heat treatment specification and metallographic organization:
Heat treatment specification: cast or ignition
Alographic tissue: cast: graphite + ferrite (matrix tissue) + pearlite
Positive fire: graphite + more beads + ferrite, can obtain higher comprehensive mechanical properties, especially plasticity and toughness improvement.
QT600-3
Material name: ductile iron
● Characteristics and scope of application:
Bead light body type ductile cast iron, with medium and high strength, medium toughness and plasticity, high comprehensive performance, good wear resistance and good vibration damping, good performance of casting process. It can change its performance by various heat treatments. Mainly used for all kinds of power mechanical crankshaft, camshaft, connecting shaft, connecting rod, gear, clutch plate, hydraulic cylinder block and other components
● chemical composition:
Carbon C: 3.0~3.5
Silicon Si: 2.4~2.8
Mn Mn: 0.3~0.5
Sulfur S: 0.03~0.035
Phosphorus P: <0.1
Magnesium Mg: 0.045~0.05
Note: RxOy: 0.033~0.049
● mechanical property:
Tensile strength σ b (MPa): 600
Condition yield strength σ 0.2 (MPa): 370
Elongation rate δ (%): 3
Hardness: 190 ~ 270 HB
Density: 7.3 in t / m or g / cm
● Heat treatment specification and metallographic organization:
Heat treatment specification: (determined by the supplier, the following is the heat treatment specification of a sample, for reference) 930℃, 2h positive ignition air cooling, 600℃, 2h, tempering air cooling
Alographic organization: pearlite + ferrite.
Hot Tags: sand-turned casting ball mill casting parts, China sand-turned casting ball mill casting parts manufacturers, suppliers, factory
