Product Introduction

AC oil pump nodular cast iron lost wax investment casting

In this paper, the structure and technical requirements of the main oil pump shell casting of steam turbine are introduced, and the casting process of the casting is described in detail. The formation causes and prevention measures of the shrinkage holes and porosity defects of the main oil pump shell casting are studied by CAD and MAGMA numerical simulation software. Finally, through practice verification, a more optimized casting technology scheme is formed For small and medium-sized nodular cast iron with pump shell structure, the defects of shrinkage and porosity can not be completely solved by adopting no-riser process design. (2) The main oil pump shell nodular cast iron can be directly fed by the riser to solve the shrinkage hole and porosity defects, and the special riser with high feeding efficiency can be directly fed, which can significantly improve the casting quality; (3) For nodular cast iron with complex heat node distribution, reasonable matching of riser and cold iron and other process measures is one of the core technologies for forming dense castings.

Prevent component segregation of spheroidal ink castings

The quality of ductile casting itself is very good, but even in good ductile casting there will be some defects such as pores, pinholes, slag inclusion and other shortcomings. The factors affecting the quality of the ductile casting itself are mainly the quality of the casting material, which is mainly caused by the unqualified quality of products such as anti-inflammation materials, solvents, fuels, and sand defects, which will lead to the scrap of the ductile casting in serious cases. Reasonable process operation for nodular casting is also very important, only in this way can improve the technical level of workers, so as to improve the quality level of nodular casting, it is necessary to consider the design from the perspective of casting alloy and casting process characteristics. Only by solving the problems of size effect and solidification, shrinkage, stress, etc., can the composition segregation, deformation, cracking and other defects of nodular casting be prevented.

Detection Systems

Copper Silica Sol Investment Casting

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