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Motor bearing material and casting method of bearing material

A technology for motor bearings and charge materials, applied in the field of metal processing, can solve the problems of high price, backward materials and process technology, poor stability of high-performance bearings, etc., and achieve low production costs, good machining performance, and improved tensile strength. Effect

Inactive Publication Date: 2019-05-07
贵州元诚实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, the bearing is the most important part of the motor, and it bears a huge torque. At present, the tensile strength of the bearing in the large motor is required to reach more than 800Mpa. The materials and process technology are relatively backward, and the stability of the high-performance bearings prepared is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: A motor bearing material, in parts by weight, contains returned materials: 40 parts, steel scrap: 30 parts, Cu: 0.8 parts, Ni: 1.1 parts, Mn: 0.8 parts, C: 3.2 parts, methyl 3 parts of cellulose, S: 0.03 parts, Si: 1.7 parts, P: 0.04 parts, Ti: 0.11 parts, Mg: 0.03 parts.

[0015] The casting method of the above-mentioned motor bearing material comprises the following steps:

[0016] (1) Prepare furnace charge according to the stated weight, place the prepared charge in an intermediate frequency electric furnace for smelting, use a carburant for carburization treatment, then melt, and add to the melted molten iron For the ratio of Cu, Ni, Mn, C, methylcellulose, S, Si, P, Ti, Mg, the melting temperature is controlled at 1480°C;

[0017] (2) adding a spheroidizing agent with a weight of 0.6% of the weight of the smelted molten iron into the spheroidizing treatment bag for spheroidizing inoculation treatment, and the weight of the inoculant is 0.3% of the weig...

Embodiment 2

[0020] Embodiment 2: A kind of electric motor bearing material, by weight, contains returned charge: 30 parts, steel scrap: 20 parts, Cu: 0.5 part, Ni: 0.6 part, Mn: 0.5 part, C: 2.6 parts, methyl 1 part of cellulose, S: 0.01 part, Si: 1.2 part, P: 0.02 part, Ti: 0.07 part, Mg: 0.01 part.

[0021] The casting method of the above-mentioned motor bearing material comprises the following steps:

[0022] (1) Prepare furnace charge according to the stated weight, place the prepared charge in an intermediate frequency electric furnace for smelting, use a carburant for carburization treatment, then melt, and add to the melted molten iron The proportion of Cu, Ni, Mn, C, methylcellulose, S, Si, P, Ti, Mg, the melting temperature is controlled at 1450°C;

[0023] (2) Adding 0.3% of the weight of the spheroidizing agent to the spheroidizing treatment bag of the smelted molten iron for spheroidizing inoculation treatment, the weight of the inoculant is 0.1% of the weight of the smelting...

Embodiment 3

[0026] Embodiment 3: A motor bearing material, in parts by weight, contains returned material: 50 parts, steel scrap: 40 parts, Cu: 1.2 parts, Ni: 1.5 parts, Mn: 1 part, C: 3.9 parts, methyl 4 parts of cellulose, S: 0.05 parts, Si: 2.2 parts, P: 0.06 parts, Ti: 0.15 parts, Mg: 0.05 parts.

[0027] (1) Prepare the furnace charge and scrap steel according to the stated weight, place the prepared charge in an intermediate frequency electric furnace for smelting, use a carburant for carburization treatment, and then melt it, and add it to the melted molten iron The proportion of Cu, Ni, Mn, C, methylcellulose, S, Si, P, Ti, Mg, the melting temperature is controlled between 1510°C;

[0028] (2) adding a spheroidizing agent with a weight of 0.8% of the weight of the smelted molten iron into the spheroidizing treatment bag for spheroidizing inoculation treatment, and the weight of the inoculant is 0.5% of the weight of the smelted molten iron;

[0029] (3) Make a mold, place an inoc...

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PUM

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Abstract

The invention discloses a motor bearing material and a casting method of the bearing material. The bearing material comprises, by weight, 30-50 parts of foundry returns, 20-40 parts of steel scrap, 0.5-1.2 parts of Cu, 0.6-1.5 parts of Ni, 0.5-1 part of Mn, 2.6-3.9 parts of C, 1-4 parts of methylcellulose, 0.01-0.05 part of S, 1.2-2.2 parts of Si, 0.02-0.06 part of P, 0.07-0.15 part of Ti, and 0.01-0.05 part of Mg. The casting method of the bearing material comprises the steps that first, the furnace charge is prepared from the foundry returns and the steel scrap according to the weight parts,the prepared furnace charge is placed into a medium-frequency electric furnace so as to be smelted, is recarburized with a carburetant, and is molten, and Cu, Ni, Mn, C, methylcellulose, S, Si, P, Tiand Mg are added into molten iron in proportion; second, after being smelted, the molten iron is subjected to spheroidizing inoculation in a spheroidizing pocket; and finally, the molten iron in thespheroidizing pocket is poured into a die for pouring, and after pouring is completed, a box is opened to take a casting out. A bearing using the bearing material is stable in performance; and the manufacturing process is reasonable, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to a motor bearing material and a casting method thereof, belonging to the field of metal processing. Background technique [0002] As we all know, the bearing is the most important part of the motor, and it bears a huge torque. At present, the tensile strength of the bearing in the large motor is required to reach more than 800Mpa. The materials and process technology are relatively backward, and the high-performance bearings prepared have poor stability. Contents of the invention [0003] The object of the present invention is to provide a motor bearing material and a casting method thereof. The performance of the bearing of the invention is stable, the manufacturing process is reasonable, and the manufacturing cost is low. [0004] The technical solution of the present invention: a motor bearing material, in parts by weight, includes: 30-50 parts of returned material, 20-40 parts of steel scrap, 0.5-1.2 parts of Cu, 0.6-1.5...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C33/08C22C37/04
Inventor 刘成子
Owner 贵州元诚实业有限公司