High-thermal-conductivity vermicular graphite cast iron diesel engine cylinder body material and preparation method thereof

A diesel engine, vermicular graphite cast iron technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problem that the thermal conductivity cannot meet the use requirements, etc.

Inactive Publication Date: 2016-04-13
FANCHANG COUNTY HENGXIN AUTO PARTS
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, the thermal conductivity of vermicular graphite cast iron diesel engine cylinder materials produced in my country can no longer meet the requirements of use.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0015] A high thermal conductivity vermicular graphite cast iron diesel engine cylinder material, its mass percentage composition is: C3.3-3.7, Si2.4-2.8, Mn0.5-0.7, Cu0.4-0.6, Cr0.3-0.5, Mo0 .2-0.35, Sn0.1-0.3, Ag0.2-0.4, Sb0.05-0.15, Sm0.04-0.07, Ho0.03-0.04, Yb0.02-0.03, P0.04-0.05, S0.02 -0.03, the balance is Fe.

[0016] A preparation method of a high thermal conductivity vermicular graphite cast iron diesel engine cylinder block material, comprising the following steps:

[0017] (1) Weigh pig iron, scrap steel, ferrosilicon, ferromanganese, ferrochromium, ferromolybdenum, electrolytic copper and other furnace materials according to the basic chemical composition of the above design and add them to the intermediate frequency induction furnace for melting. The melting temperature is 1530 °C; After melting, detect the chemical composition of molten iron, and release it at 1495°C after passing the composition inspection;

[0018] (2) Before the molten iron comes out of the...

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Abstract

The invention discloses a high-thermal-conductivity vermicular graphite cast iron diesel engine cylinder body material and a preparation method thereof. The high-thermal-conductivity vermicular graphite cast iron diesel engine cylinder body material consists of the following components in percentage by mass: 3.3-3.7% of C, 2.4-2.8% of Si, 0.5-0.7% of Mn, 0.4-0.6% of Cu, 0.3-0.5% of Cr, 0.2-0.35% of Mo, 0.1-0.3% of Sn, 0.2-0.4% of Ag, 0.05-0.15% of Sb, 0.04-0.07% of Sm, 0.03-0.04% of Ho, 0.02-0.03% of Yb, 0.04-0.05% of P, 0.02-0.03% of S and the balance of Fe. The vermicular graphite cast iron prepared by the preparation method has high strength, good toughness, a high heat conduction coefficient, good heat resistance, and fatigue resistance, and is durable in use.

Description

technical field [0001] The invention relates to a cast iron material, in particular to a high thermal conductivity vermicular graphite cast iron diesel engine cylinder material and a preparation method thereof. Background technique [0002] The diesel engine is composed of two parts, the cylinder block and the cylinder head, which are connected to each other by bolts. The cylinder block is one of the most important parts in the diesel engine and even in the car. It is the basic part and skeleton of the diesel engine, and it is also the The basic parts of the general assembly. The role of the cylinder block is to support and ensure the accurate position of moving parts such as pistons, connecting rods and crankshafts; to ensure the ventilation, cooling and lubrication of the diesel engine; to provide various auxiliary systems, components and installation of the diesel engine. The processing quality of diesel engine cylinder material directly affects the quality of diesel eng...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C33/08C21C1/08C21D5/00F02F1/00
CPCC22C37/10C21C1/08C21D5/00C21D2211/006C21D2211/009C22C33/08C22C37/06F02F1/00F05C2201/0439
Inventor 周道虎
Owner FANCHANG COUNTY HENGXIN AUTO PARTS
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