Nodulizer Companion

Abstract

The invention relates to a nodulizing agent partner used for producing nodular cast iron. When the nodulizing agent partner used for producing nodular cast iron is used together with the nodulizing agent, decaying spheroidisation time of molten iron can be delayed, the nodulizing level of nodular iron casting is improved and stabilized, and the number of graphite nodules in the nodular iron is increased. The nodulizing agent partner used for producing nodular cast iron comprises the following elements in parts by weight: 11-13 parts of Ba, 6-11 parts of Bi, 0-10 parts of Sb, 13-15 parts of La, 7-9 parts of Ce, 40-44 parts of Si and 9-15 parts of Fe.

Description

technical field [0001] The invention relates to a nodulizer companion for producing nodular cast iron. Background technique [0002] Ductile iron is an engineering material widely used in various industrial fields such as automobiles, energy, machine tools, electric power, steel, chemicals, light industrial machinery, railway transportation, construction, etc. The annual output in my country exceeds 10 million tons. The material performance of ductile iron is an important indicator that affects the performance. [0003] The most important factor affecting the material performance of nodular cast iron is the quality control technology of nodularization treatment, and one of the most important factors affecting the quality of nodularization treatment is the quality of nodularizer. [0004] The current spheroidizing treatment processes mainly include punching method, covered bag punching method and wire feeding method, among which, punching method and covered bag punching meth...

AI Technical Summary

Problems solved by technology

[0005] The current nodulizers generally have the disadvantages that the deterioration reaction time and the intensity of the reaction are difficult to control. For example, during the natural decline of magnesium per minute, the nodularization level sometimes appears unsatisfactory in front of the furnace (the nodularization level is only 4-6), Fast spheroidization decline, poor graphite spherical shape, and few balls are not a problem in the production of general nodular iron parts to meet domestic requirements, but if you want to produce high-grade nodular iron parts (such as wind power castings, small and medium etc.) Obviously not

After pouring, with the condensation of molten iron, the graphite balls in the molten iron will decay and become larger and deformed, especially the graphite balls in the center of the casting will decline more seriously, resulting in the production of ductile iron that cannot meet the design requirements

Images