Science intensive production technologies of cast draft-sill for center sill of freight car with the 27 t axial load
To solve the problem of manufacturing freight cars with increased carrying capacity and reliability it is offered to use in their design a center sill with a new type of a cantilever part created on the basis of a cast draft-sill. Special requirements to the characteristics of a cast part defined a necessity to develop technologies for its manufacturing with the aid of science intensive experiments and current methods of the computer analysis. The work is devoted to the description of methods and technological developments allowing the manufacturing a complex and critical part. The design of casting technology was carried out with the use of computer simulation. To ensure high wear-resistance of a draft-sill center plate surface there was developed a technology of induction hardening on the basis of computations and full-scale experiments.