Manufacturing process of high-strength spheroidal graphite cast iron sleeve pieces
A nodular cast iron, manufacturing process technology, applied in the field of casting, can solve problems such as functional failure and inability to guarantee strength
Inactive Publication Date: 2020-01-07
江苏万恒铸业有限公司
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Abstract
The invention relates to the casting industry, and provides a manufacturing process of high-strength spheroidal graphite cast iron sleeve pieces. The products manufactured by means of the process arehigh-strength spheroidal iron which mainly has the shop signs of the national standard QT700-3 and the national standard QT900-2. For the QT700-3 spheroidal iron, the tensile strength is larger than or equal to 800 Mpa, and the ductility is larger than or equal to 3%; and for the QT900-2 spheroidal iron, the tensile strength is larger than or equal to 900 Mpa, and the ductility is larger than or equal to 2%. The QT700-3 spheroidal iron reaches the advanced international standard-American standard ASTM A536 Grade100-70-03, the QT900-2 spheroidal iron correspondingly reaches the advanced international standard-American standard ASTM A536 Grade120-90-02, the spheroidization rate reaches 85% or above, and the compactness of the metallographic structure is high. The oxide inclusion is not higher than level II. The high-strength spheroidal graphite cast iron sleeve pieces are resistant to corrosion, abrasion and high temperature, and capable of achieving a good shock absorption effect, are not liable to crack, and are high in strength and free of deformation. The high-strength spheroidal graphite cast iron sleeve pieces are widely applied to crankshafts, shaft sleeves, gears, tool tracksand other mechanical parts.
Technology Topic
DuctilityCrankshaft +6
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