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High Chromium Cast Iron Ceramic Composite Roller Sleeve1
Mining Machinery, High Chromium Cast Iron Cerami, Composite Roller Tire
Shanghai Haocheng Machinery Parts Co., Ltd.
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Product Description High chromium cast iron ceramic composite roller sleeveHigh chromium cast iron ceramic composite roller sleeve is made of high chromium cast iron as matrix material, through special process, high chromium cast iron and honeycomb ceramic particles composite molding, ceramic ZTA ceramic particles, and then through sand casting process, high chromium cast iron ceramic composite and ductile iron secondary composite molding. The chemical composition of high chromium cast iron material is shown in Table 1 below.Table1:Chemical composition of high chromium cast iron composite roller(wt%)Material CSiMnSPCrHigh chromium cast iron ceramic composite roller tire2.8-3.20.5-1.00.5-1.2≤0.05≤0.0520-26Ductile iron 3.2-3.92.5-2.70.3~0.5≤0.04≤0.04 2.Mechanical property High chromium cast iron ceramic composite roller tire is a secondary composite molding of high chromium cast iron, ZTA ceramic particles and ductile iron, which makes the ceramic composite roller sleeve not only has high strength and hardness, but also has high toughness, ensuring the wear resistance and safety of the roller sleeve. ZTA ceramic particle hardness is above HV2100, while high chromium cast iron M7C3 carbide hardness is above HV1400, and high chromium cast iron matrix hardness is above HV750, therefore, under the condition of high stress abrasive two bodies high stress wear, due to the difference in materials, the service life of ceramic composite roll sleeve is 1.5-3 times that of ordinary high chromium cast iron roll sleeve. The properties of high chromium cast iron and ductile iron are shown in Table 2 below. Table 2 :Mechanical Property Material Tensile strength /MpImpact Toughness J/cm 2Hardness/HRCRate of Elongation(%)High Chrome≥800≥4≥60---Ductile Iron500~650 ----147~241(HB)4~103. Structure design of high chromium cast iron ceramic composite roller tire The structural design of the high chromium cast iron ceramic composite roller sleeve is shown in Figure 1 and Figure 2 below. The red honeycomb area is the ZTA wear-resistant ceramic particle distribution area. The ceramic particles are distributed in the high chromium alloy matrix in a honeycomb structure, and the ceramic layer covers the working wear area of the whole roller sleeve. The green area outside the ceramic layer is high chromium cast iron, and the blue area is ductile iron.Figure12 :sectional view 3.
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