Spheroidal graphite cast iron glass mold inoculating agent

Abstract

The invention discloses a spheroidal graphite cast iron glass mold inoculating agent. The agent is prepared by the following components including, by weight percent, 2 to 5 percent of Bi, 45 to 50 percent of Si, 0.5 to 3 percent of Ba, 0.1 to 3 percent of La, 2 to 2.2 percent of Al, 0.5 to 1 percent of Ca, 0.5 to 0.8 percent of Sr, and the balance Fe and inevitable trace elements. The inoculating agent provided by the invention promotes the formation of extremely fine spheroidal-graphite cast iron (according to the graphite morphology, 1000 spheroidal-graphite structures are included per square millimeter), promotes the spheroidization rate to be larger than or equal to 90 percent and a spheroidal graphite metallographic structure to be larger than 1000 / mm<2>, and not only can meet the requirements for high temperature resistance, corrosion resistance and dimensional stability of a glass mold, but also can meet the requirement that due to the high inner cavity density, the cavity surface can be subject to mirror polishing, a polishing effect is good due to the density, the service life can be prolonged, the production cost can be reduced, and alloy materials are saved.

Description

Technical field [0001] The purpose of the present invention is to provide an inoculant, specifically an inoculant for nodular cast iron glass molds. Background technique [0002] Nodular cast iron is obtained by spheroidization and inoculation treatment to obtain spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thereby obtaining higher strength than carbon steel. Cast iron is an iron-carbon alloy with a carbon content of more than 2.11%. It is obtained from industrial pig iron, scrap steel and other steel and alloy materials through high-temperature melting and casting. Nodular cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some complex forces, strength, toughness, and wear resistance. Highly demanding parts. Nodular cast iron has rapidly develop...

AI Technical Summary

Problems solved by technology

[0003] As an unpopular industry, glass molds have been using gray cast iron in recent years because more alloying elements can be added during casting of gray cast iron, which can meet the needs of most glass molds for high temperature resistance, corrosion resistance and dimensional stability, but The density of the material is not enough, and the surface of the cavity cannot be mirror-polished, so it can be well applied to larger bottles

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