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Vermicular graphite cast iron, piston ring, preparation method and application of vermicular graphite cast iron

A technology of compacted graphite cast iron and graphite, which is applied in the application field of high-performance compacted graphite cast iron and diesel engine parts of diesel locomotives, to achieve the effect of shortening the process flow, good inoculation ability and improving mechanical properties

Pending Publication Date: 2021-09-03
CRRC CHANGZHOU DIESEL ENGINE COMPONENTS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] There are also relevant domestic patent applications on vermicular graphite cast iron, but there are still improvements in performance and operability

Method used

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  • Vermicular graphite cast iron, piston ring, preparation method and application of vermicular graphite cast iron
  • Vermicular graphite cast iron, piston ring, preparation method and application of vermicular graphite cast iron
  • Vermicular graphite cast iron, piston ring, preparation method and application of vermicular graphite cast iron

Examples

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Embodiment 1

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0047] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

Embodiment 1～ Embodiment 14

[0073] The components of the compacted graphite cast iron in Examples 1 to 14 and their weight percentages relative to the total weight of the compacted graphite cast iron are shown in Table 1 below.

[0074] Component and weight percentage (wt%) of compacted graphite cast iron of table 1

[0075]

[0076]

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PUM

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Abstract

The invention discloses vermicular graphite cast iron, a piston ring, a preparation method and application of the vermicular graphite cast iron. The vermicular graphite cast iron comprises the following components in percentages by weight relative to the total weight of the vermicular graphite cast iron: 3.3% to 3.9% of C, 1.6% to 2.0% of Si, 0.5% to 1.0% of Mn, less than 0.03% of P, 0.008% to 0.015% of S, 1.0% to 2.0% of Cu, 0.4% to 0.9% of Mo, 0.1% to 0.25% of Sn, less than or equal to 0.03% of Re, 0.008% to 0.015% of Mg, and the balance of Fe and unavoidable impurities. According to the vermicular graphite cast iron, conventional alloy elements are selected, by reasonably controlling element ratio, pearlite content in a matrix structure is guaranteed, the mechanical property of the vermicular graphite cast iron is improved, the vermicular graphite rate of the material stably reaches 70% or above, and therefore the vermicular graphite cast iron reaches or even exceeds the foreign advanced technical standard.

Description

technical field [0001] The invention relates to a material for machine parts, in particular to a high-performance vermicular graphite cast iron, a preparation method of the vermicular graphite cast iron, a piston ring using the vermicular graphite cast iron and the vermicular graphite cast iron for internal combustion locomotive diesel engine parts application of components. Background technique [0002] The working stability and technical and economic characteristics of diesel locomotive diesel engines depend on the performance of its components, and to a large extent depend on the working performance of piston rings. Up to now, the materials of piston ring bodies are basically graphite cast iron materials. . Due to the special working performance of graphite in graphite cast iron materials, it will form a protective lubricating layer, which can prevent viscous wear of engine cylinder components. Primary material for transport engine piston rings. [0003] Due to the com...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C33/08C21C1/10
CPCC22C37/10C22C33/08C21C1/10
Inventor 喻光远徐小辉吴凯
Owner CRRC CHANGZHOU DIESEL ENGINE COMPONENTS CO LTD
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