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A low-carbon brake disc and its manufacturing method

A technology of carbon brake discs and manufacturing methods, applied in the direction of brake discs, brake types, brake components, etc., can solve problems such as high production costs, achieve the effects of reducing high production costs, improving smelting efficiency, and reducing production costs

Active Publication Date: 2021-11-23
广东扬山联合精密制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a low-carbon brake disc, which not only meets the performance of the brake disc hardness, metallographic, braking coefficient, etc., but also can reduce the production process caused by high carbon. costly problem

Method used

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  • A low-carbon brake disc and its manufacturing method
  • A low-carbon brake disc and its manufacturing method
  • A low-carbon brake disc and its manufacturing method

Examples

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Effect test

Embodiment 1

[0050] This embodiment provides a low-carbon brake disc, which is made of the following components in weight percentage:

[0051] 3.12% carbon, 2.23% silicon, 0.70% manganese, 0.06% phosphorus, 0.06% sulfur, 0.01% antimony, 93.82% iron. agent.

[0052] The manufacturing method of described a kind of low-carbon brake disc, comprises the following steps:

[0053] S1 ingredients, calculate the content of each component according to the requirements, and weigh them for use;

[0054] S2 smelting, the prepared raw materials are put into the intermediate frequency induction furnace in batches for smelting, and carburizer is added, the power is adjusted to 450kW within 1 to 20 minutes, and the power is gradually adjusted to 1440kW after 20 minutes, and iron filings, scrap steel and Returning to the furnace charge, the recarburizer is added in batches with the iron filings, and the power is gradually increased to heat up and keep warm until all the charge is melted. The composition o...

Embodiment 2

[0068] The low-carbon brake disc provided in this embodiment is made of the following components in weight percentage:

[0069] 3.15% carbon, 2.20% silicon, 0.75% manganese, 0.05% phosphorus, 0.08% sulfur, 0.015% antimony, 93.76% iron. agent.

[0070] The manufacturing method of described a kind of low-carbon brake disc, comprises the following steps:

[0071] S1 ingredients, calculate the content of each component according to the requirements, and weigh them for use;

[0072] S2 smelting, the prepared raw materials are put into the intermediate frequency induction furnace in batches for smelting, and carburizer is added, the power is adjusted to 450kW within 1 to 20 minutes, and the power is gradually adjusted to 1440kW after 20 minutes, and iron filings, scrap steel and Returning to the furnace charge, the recarburizer is added in batches with the iron filings, and the power is gradually increased to heat up and keep warm until all the charge is melted. The composition of...

Embodiment 3

[0080] This embodiment provides a low-carbon brake disc, which is made of the following components in weight percentage:

[0081] 3.10% carbon, 2.25% silicon, 0.75% manganese, 0.08% phosphorus, 0.08% sulfur, 0.01% antimony, 93.73% iron. agent.

[0082] The manufacture method of described a kind of low-carbon brake disc, comprises the following steps:

[0083] S1 ingredients, calculate the content of each component according to the requirements, and weigh them for use;

[0084] S2 smelting, the prepared raw materials are put into the intermediate frequency induction furnace for smelting in batches, and carburizer is added, the power is adjusted to 450kW within 1 to 20 minutes, and the power is gradually adjusted to 1440kW after 20 minutes, and iron filings, scrap steel and Returning to the furnace charge, the recarburizer is added in batches with the iron filings, and the power is gradually increased to heat up and keep warm until all the charge is melted. The composition of ...

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Abstract

A low-carbon brake disc and a manufacturing method thereof, relating to the field of auto parts; it is made of the following components in weight percent: 3.10% to 3.15% of carbon, 2.20% to 2.25% of silicon, 0.70% to 0.75% of manganese, and 0.05% to phosphorus 0.08%, sulfur 0.06%-0.08%, antimony 0.01%-0.015%, and the balance is iron and trace elements, the trace elements <0.01%, and the sum of the weight percentages of the above components is 100%. The production method includes the following steps: S1 batching; S2 smelting, adding the prepared raw materials in batches to an intermediate frequency induction furnace for smelting, adding a carburant, gradually increasing the power to heat up, and keeping warm until all the furnace materials are melted; S3 inoculating Treatment, inoculating the molten iron after smelting treatment, adding an inoculant, and keeping the temperature at 1400°C to 1460°C; S4 casting; S5 processing; S6 post-treatment. Through reasonable material selection and proportioning, a low-carbon brake disc can be produced, which can not only meet the performance of the brake disc hardness, metallography, braking coefficient, etc., but also reduce the high production cost caused by high carbon in the production process.

Description

technical field [0001] The invention belongs to the field of auto parts, and in particular relates to a low-carbon brake disc and a manufacturing method thereof. Background technique [0002] The material of the brake disc is generally gray cast iron HT200~HT250, and the required hardness is generally 187~241HB. When casting and smelting, an induction furnace is generally used and smelted with 20% pig iron, 30% recycled materials, 20% scrap steel and 30% iron filings as raw materials. The reduction ratio is different for different properties. When the carbon content in the raw material is 3.4-3.6% (the carbon content of a large number of HT200-HT250 recycled materials or iron filings on the market is mostly 3.4-3.6%), the reduction rate is only about 3.0-3.2 after smelting, and the decline rate is about 0.3- 0.4%, in order to ensure that the hardness and metallographic appearance meet the requirements, the general process in the industry is to add 2.5%-3% carburant to suppl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08C21C1/08F16D65/12
CPCC21C1/08C22C33/08C22C37/10F16D65/125F16D2200/0008F16D2200/0052F16D2200/0082
Inventor 宋继光苏兆森郑茂
Owner 广东扬山联合精密制造股份有限公司
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