Spheroidal graphite cast iron alloy material and preparation method thereof

A technology of alloy material and nodular cast iron, which is applied in the field of cast iron alloy, can solve the problems of brake disc coating deformation, limited high temperature resistance, wear and tear of brake disc coating, etc., achieve uniform growth, uniform grain size, and improve performance Effect

Inactive Publication Date: 2015-01-28
张超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cast iron alloys have a defect that they have limited high temperature resistance during use. Under high temperature conditions, cast iron alloys will soften. Generally, the suitable temperature for cast iron alloys is lower than 350°C.
However, parts of cast iron alloys such as brake discs will locally genera

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] A method for preparing ductile iron alloy material includes the following steps:

[0019] Ingredients,

[0020] Melting, the above ingredients are smelted into liquid at 1250-1280°C, after slag removal, etc., they are kept at 1180-1200°C for 1-2 hours for incubation, and then the temperature is lowered at least 50°C / min by 100-200°C, and then heated To 1180-1200℃, and keep for 0.5-1 hour;

[0021] For casting, the solution is cast at a constant temperature and then the temperature is uniformly reduced to 150-180°C to obtain a blank;

[0022] Heat treatment, put the cooled blank in a quenching furnace at 750-780℃ for 2-4 hours, then quench it in a salt bath to 300-400℃, then keep it for 1-2 hours and quench it to 130-150℃;

[0023] Tempering, keep it in a tempering furnace at 180-200℃ for 2-4 hours and then cool to room temperature.

[0024] The ingredients are composed of 3.2-3.3% carbon, 2.8-3.0% silicon, 0.03-0.04% magnesium, 0.01-0.025% chromium, 0.005-0.01% aluminum, and 0.00...

Example Embodiment

[0027] Example 1

[0028] The preparation method is:

[0029] A spheroidal graphite cast iron alloy material, the ingredient composition of which is 3.2% carbon, 2.8% silicon, 0.03% magnesium, 0.01% chromium, 0.005% aluminum, 0.005% boron, 0.6% manganese, 0.08% copper, 0.01% vanadium, 0.01% zirconium, 0.03% tin, 0.001% neodymium, 0.03% barium, less than 0.1% impurities, and the balance is iron.

Example Embodiment

[0030] Example 2

[0031] A spheroidal graphite cast iron alloy material, the ingredient composition of which is 3.3% carbon, 3.0% silicon, 0.04% magnesium, 0.025% chromium, 0.01% aluminum, 0.01% boron, 0.8% manganese, 0.12% copper, 0.02% vanadium, 0.02% zirconium, 0.05% tin, 0.003% neodymium, 0.035% barium, less than 0.1% impurities, and the balance is iron.

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PUM

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Abstract

The invention relates to a spheroidal graphite cast iron alloy material and a preparation method thereof. The spheroidal graphite cast iron alloy material is prepared from the following materials in percentage by weight: 3.2%-3.3% of carbon, 2.8%-3.0% of silicon, 0.03%-0.04% of magnesium, 0.01%-0.025% of chromium, 0.005%-0.01% of aluminum, 0.005%-0.01% of boron, 0.6%-0.8% of manganese, 0.08%-0.12% of copper, 0.01%-0.02% of vanadium, 0.01%-0.02% of zirconium, 0.03%-0.05% of tin, 0.001%-0.003% of neodymium, 0.03%-0.035% of barium, less than 0.1% of impurities and the balance of iron.

Description

technical field [0001] The invention belongs to the field of cast iron alloys, in particular to a nodular cast iron alloy material and a preparation method. Background technique [0002] In the field of automobile or machinery manufacturing, cast iron alloys are used to prepare parts with high wear resistance or parts with complex structures. The use of cast iron alloy and casting process can reduce the difficulty of processing and reduce production costs. However, cast iron alloys have a defect that they have limited high temperature resistance during use. Under high temperature conditions, cast iron alloys will soften. Generally, the suitable temperature of cast iron alloys is lower than 350°C. However, parts of cast iron alloys such as brake discs will locally generate high temperatures of 800-900°C through friction during the braking process. This result not only wears the coating of the brake disc, but also causes the coating of the brake disc to deform. The performan...

Claims

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Application Information

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IPC IPC(8): C22C37/04C22C37/06C22C37/10
CPCC22C37/04C22C37/06C22C37/10
Inventor 张超
Owner 张超
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