Corrosion-resistant alloy cast iron material for diesel engine cylinder and preparing method thereof

Abstract

The invention discloses a corrosion-resistant alloy cast iron material for a diesel engine cylinder and a preparing method thereof. The gray cast iron material for the diesel engine cylinder comprises the following components in a percent by mass: 2.8-3.2% of C, 2.2-2.6% of Si, 4.4-4.8% of Ni, 1.9-2.3% of Cr, 3.5-4.0% of Cu, 0.2-0.4% of Mn, 0.3-0.6% of In, 0.2-0.4% of Ge, 0.05-0.1% of La, 0.04-0.08% of Pm, 0.03-0.06% of Gd, 0.04-0.07% of P, 0.02-0.04% of S and the balance of Fe. The gray cast iron material prepared by the preparing method has the characteristics of being outstanding in corrosion resistance, high in strength, great in tenacity, great in thermal resistance and the like.

Description

technical field [0001] The invention relates to a cast iron material, in particular to a corrosion-resistant alloy cast iron material for a diesel engine cylinder block 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 engine, a...

AI Technical Summary

Problems solved by technology

At present, the gray cast iron diesel engine cylinder material produced in my country has the disadvantage of poor corrosion resistance, which cannot meet the market demand.