This article specified the design requirement to the bogie of high-speed power car, introd uced the bogie of “China star” power car structure.

Optimization of welded structure in bogie frame of high-speed locomotive;

The effect of heat imput on the welding deformation of bogie erame is studied by means of the nemerical simulation method, the paper obtains the rule of welding deformation under the influence of the heat imput, it supplies the basis for the welding quality control of the frame of the high-speed locomotive in production process.

How to reduce and control welding deformation is a major issue in the process of manufacturing the bogie frame of the high-speed locomotive.

This paper investigated intergranular corrosion resistance of welded joint of the skin of high speed locomotive with 1Cr18Ni9Ti stainless steel.

Project method of strength analysis about axles of high speed power car;

High speed test and bearing temperature rise of high speed power car with hollow axles on rolling and vibrating test stand;

Taken the mass of welded bogie frame of high speed power car as object function, and the fatigue strength of 16Mn steel base material and weld as restrictive conditions, the welded frame of high speed power car is optimized based on the strength test load according to UIC615-4.