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Non-magnetic cast iron

A cast iron and pig iron technology, applied in the field of non-magnetic cast iron, can solve the problems affecting the use of electric equipment and large magnetism, and achieve good melting effect, good degaussing effect, and good use effect

Active Publication Date: 2014-06-25
通化名成电瓷电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: strong magnetism, it will produce a strong magnetic field when used in electricity, consume electricity and generate heat at the same time, affecting the use of power equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Non-magnetic cast iron, its chemical composition and mass percentage are: pig iron 66%, ferromanganese 12%, ferrosilicon 3%, copper 16%, nickel 3%.

Embodiment 2

[0018] The preparation method of nonmagnetic cast iron, its step is as follows:

[0019] 1. Start the furnace and add pig iron, and the temperature rises to 1300°C.

[0020] 2. At 1300℃, add ferromanganese. Manganese is completely melted into the pig iron, and the strength of the non-magnetic cast iron is strengthened first.

[0021] 3. The temperature rises to 1500°C, adding copper to weaken the magnetism of iron.

[0022] 4. The temperature rises to 1560°C, and ferrosilicon is added to soften the cast iron, so that the strength after casting can be finished.

[0023] 5. The temperature rises to 1600°C, nickel is added, and the magnetization is cut for the last time.

[0024] 6. When the temperature rises to 1650°C, the molten iron is poured out, and borax is added to the drag bag when pouring out. It can prevent the molten iron from being mixed with other impurities.

[0025] 7. After the molten iron is poured into the sand mold, after staying for 10 minutes, it is quic...

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PUM

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Abstract

The invention relates to power cast iron production, namely, non-magnetic cast iron. The non-magnetic cast iron comprises the following chemical components in percentage by mass: 66% of pig iron, 12% of ferro-manganese, 3% of silicon iron, 16% of copper and 3% of nickel. According to the scheme, the non-magnetic cast iron is prepared by adding different raw materials at different temperatures and finally performing quenching treatment. The cast iron is free of magnetism and can be used in power fittings, particularly used in insulators, and has a better use effect. In the production process, different raw materials are added at different temperatures, the melting effect is good, the demagnetization effect is good, and qualified non-magnetic cast iron can be obtained.

Description

technical field [0001] The invention relates to the production of cast iron for electric power, that is, non-magnetic cast iron. Background technique [0002] In the prior art, the composition of gray cast iron is: iron, carbon, silicon, manganese, phosphorus and sulfur. Its disadvantages are: strong magnetism, it will produce a strong magnetic field when used in electricity, consume electricity and generate heat at the same time, affecting the use of power equipment. Contents of the invention [0003] The purpose of the present invention is to provide a kind of magnetic little, even non-magnetic non-magnetic cast iron for above-mentioned deficiency. [0004] The technical solution of the present invention is: non-magnetic cast iron, its chemical composition and mass percentage are: pig iron 66%, ferromanganese 12%, ferrosilicon 3%, copper 16%, nickel 3%. [0005] In said scheme, the preparation method of non-magnetic cast iron, its steps are as follows: [0006] (1) S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/00C22C33/08
Inventor 张家成
Owner 通化名成电瓷电器有限公司
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