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Easy-to-machine vermicular graphite cast iron

A vermicular graphite cast iron, easy-to-process technology, applied in the field of vermicular graphite iron, can solve the problems of not being widely used, not having economic strength, etc., to achieve the effects of improving vermicularization efficiency, reducing processing costs, and stable performance

Inactive Publication Date: 2016-08-17
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have made great breakthroughs, they require expensive processing equipment
Many processing enterprises do not have the economic strength to use these advanced equipment, so this improvement method cannot be widely used, and from the perspective of improving the processing performance of compacted graphite cast iron itself

Method used

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  • Easy-to-machine vermicular graphite cast iron

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Embodiment Construction

[0014] The following is a detailed description of Embodiments 1 to 3 of the present invention.

[0015] Embodiments 1 to 3 Weighed the vermicular graphite cast iron powder and the cubic boron nitride (BN) powder respectively according to the ratio of vermicular graphite cast iron and cubic boron nitride (BN) 100:0.0089, 100:0.0144, 100:0.0233, and The compacted graphite cast iron powder is heated and melted, and the temperature is kept at 1400°C. Add the boron nitride powder into the compacted graphite cast iron in the furnace, and use the melted compacted graphite cast iron to evenly distribute the boron nitride powder on the iron under thermal convection. In water, keep the vermicular graphite cast iron in a molten state for 1 hour, then vermicularize the vermicular graphite cast iron, pour, open the box, air cool and bury sand to cool to room temperature, and then measure the material properties of the cast vermicular graphite cast iron, in which the comparative example did ...

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Abstract

The invention provides easy-to-machine vermicular graphite cast iron and belongs to the technical field of cast iron materials. The easy-to-machine vermicular graphite cast iron is mainly prepared by adding cubic boron nitride (BN) powder into molten iron of conventional vermicular graphite cast iron, so that BN can be uniformly distributed in the easy-to-machine vermicular graphite, the easy-to-machine vermicular graphite can possess the self-lubricating property, and the mechanical property of the easy-to-machine vermicular graphite can remain unchanged when the cutting machinability is improved on the basis that the natural hardness and tensile strength properties of the easy-to-machine vermicular graphite are kept. Accordingly, the easy-to-machine vermicular graphite cast iron can be economically and efficiently machined by cutting.

Description

【Technical field】 [0001] The invention relates to the technical field of cast iron materials, in particular to an easy-to-process vermicular graphite cast iron. 【Background technique】 [0002] Vermicular graphite cast iron has excellent mechanical properties between gray cast iron and nodular cast iron, and has important uses in internal combustion engine cylinder blocks and cylinder heads, mold industry and brake parts. However, compacted graphite cast iron is a difficult-to-machine material. In the process of cutting compacted graphite cast iron, there are generally low efficiency and high processing costs, which seriously hinder the popularization and application of compacted graphite cast iron. [0003] At present, the main methods to solve the difficult machining of vermicular graphite cast iron include: developing better cutting tools and using more advanced processing machine tools. Although these methods have made great breakthroughs, they require expensive processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08
CPCC22C37/10C22C33/08
Inventor 林勇传何春华黄健友谢正良韦珏宇
Owner GUANGXI UNIV
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