Gray pig iron with good mechanical property and cutting machining property

Abstract

The invention discloses gray pig iron with the good mechanical property and cutting machining property, and belongs to the technical field of powder metallurgy. The gray pig iron is composed of raw materials including, by mass percent, 4.2 to 6.77% of C, 2.5 to 3.8% of Si, 1.05 to 1.55% of Mn, 0.05 to 0.128% of P, 0.125 to 0.625% of S, 0.45 to 0.85% of Cr, 0.62 to 0.98% of Cu, 0.07 to 0.12% of Sn,0.02% of Sb, 0.77% of Ni, 1.2% of W and the balance pure iron and impurities. The large gray pig iron product shrinkage tendency is solved, the gray pig iron produced through the production method ofthe gray pig iron and a casting cast through the method have the beneficial effects of being free of generating shrinkage and high in yield, and the special occasions with the high property and the good cutting property can be met.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy and relates to a gray cast iron, in particular to a gray cast iron with good mechanical properties and cutting performance. Background technique [0002] Cast iron is a general term for alloys mainly composed of iron, carbon and silicon. Cast iron can be divided into: gray cast iron, white cast iron, malleable cast iron, nodular cast iron, vermicular cast iron and alloy cast iron. [0003] Alloy cast iron is obtained by adding appropriate amount of alloying elements (such as silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, aluminum, boron, vanadium, tin, etc.) to ordinary cast iron. Alloying elements change the matrix structure of cast iron, so that it has corresponding properties such as heat resistance, wear resistance, corrosion resistance, low temperature resistance or non-magnetic properties. Among them, gray cast iron in alloy cast iron is the most widely use...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at solving the shortcomings of traditional gray iron castings such as poor fluidity and low wear resistance in the casting process, and provides a gray cast iron with good mechanical properties and cutting performance without adding additional processing procedures and processing Under the condition of low cost, high wear resistance can be obtained, which can meet the use of high-demand occasions