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Lanthanum-containing nodulizing agent and preparation method thereof

A technology of nodulizer and rubidium oxide, which is applied in the field of lanthanum-containing nodulizer and its preparation, can solve the problems of poor practicability and achieve the effects of eliminating adhesion, reducing the depth of white mouth, and accelerating the crushing speed

Inactive Publication Date: 2020-08-25
JIANGSU YAFENG ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

White iron in the current technology is very common. The performance of white iron is hard and brittle, and its practicality is very poor.
There are already a large number of nodulizers in the prior art to improve, but further research on nodulizers still needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Choose 44 parts by weight of silicon; 6 parts by weight of magnesium; 2.5 parts by weight of lanthanum; 3 parts by weight of calcium; 2.6 parts by weight of aluminum; 30 parts by weight of iron; 2 parts by weight of manganese; , that is, metal magnesium, metal lanthanum, metal calcium, metal aluminum, ferromanganese alloy, 75A ferrosilicon, cerium oxide, yttrium oxide, and rubidium oxide, use conical crushing rollers to crush the above components, grind them into powder, and sieve 60~70 mesh , prepared by melting in a 1-ton intermediate frequency induction furnace; the melting temperature is 1250-1360°C.

Embodiment 2

[0023] Select silicon of 44 parts by weight; Magnesium of 4.5 parts by weight; Lanthanum of 0.5 parts by weight; Calcium of 1 part by weight; Aluminum of 1 part by weight; Iron of 25 parts by weight; , that is, metal magnesium, metal lanthanum, metal calcium, metal aluminum, ferromanganese alloy, 75A ferrosilicon, cerium oxide, yttrium oxide, and rubidium oxide corresponding to the content in parts by weight, and the ratio of the cerium oxide, yttrium oxide, and rubidium oxide is 1 : 1:1, the above components are crushed by conical crushing rollers, ground into powder, sieved with 60-70 mesh, and smelted in a 1-ton medium-frequency induction furnace; the melting temperature is 1250-1360°C.

Embodiment 3

[0025] Choose the silicon of 50 weight parts; The magnesium of 7.5 weight parts; The lanthanum of 3 weight parts; The calcium of 5 weight parts; The aluminum of 3.55 weight parts; The iron of 35 weight parts; The manganese of 2 weight parts; That is, magnesium metal, lanthanum metal, calcium metal, aluminum metal, ferromanganese alloy, 75A ferrosilicon, cerium oxide, yttrium oxide, and rubidium oxide, the ratio of cerium oxide, yttrium oxide, and rubidium oxide is 1:1:1, The above components are crushed by conical crushing rollers, ground into powder, sieved with 60-70 mesh, and smelted in a 1-ton medium-frequency induction furnace; the smelting temperature is 1250-1360°C.

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Abstract

The invention discloses a lanthanum-containing nodulizing agent, and belongs to the technical field of casting. The lanthanum-containing nodulizing agent is prepared from materials by weight: 44-50 parts of silicon, 4.5-7.5 parts of magnesium, 0.5-3 parts of lanthanum, 1-5 parts of calcium, 1-3.55 parts of aluminum, 25-35 parts of iron, 0.5-2 parts of manganese and 3-5 parts of metal oxides. The metal oxides are a combination of two or three of cerium oxides, yttrium oxides and rubidium oxides. The grain diameter of the nodulizing agent is 9-13 mm, and the sulfur content in the nodulizing agent is smaller than 2.5. Through the synergistic effect of the multiple metal oxides, the nodulizing rate of the nodulizing agent for graphite is increased, and the chill depth of the nodulizing agent for cast iron is reduced.

Description

technical field [0001] The invention belongs to the technical field of casting, and specifically refers to a nodulizer containing lanthanum and a preparation method thereof. Background technique [0002] There are many kinds of domestic nodulizers, but so far the most widely used nodulizers are prepared from alloys of rare earth metals. As we all know, the key technical links in the production of ductile iron castings are the nodularization process and the selection of metal components in the nodulizer, and the role of nodular elements is crucial. [0003] The spheroidization process is to transform the metal component into a spherical shape. When casting iron, it will contain a certain amount of carbon. Those who are familiar with the ball milling process will understand that carbon will combine with iron, and the form of carbon in solidified cast iron is different for cast iron. Component performance is critical. It should also be noted that the residual amount of rare e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/10C22C1/02C22C1/10
CPCC21C1/105C22C1/1036C22C1/1047
Inventor 陈明何赛洲
Owner JIANGSU YAFENG ALLOY MATERIAL
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