Numerical Analysis Of Key Issues Of V-process And Production Line Design

V-process, which has advantage of fine surface quality, high dimensional accuracy,low investment and environment-friendly, is developing rapidly in China recently, andthere have been several large-scale automated production lines already. However,problems caused by energy consumption of vacuum and dust in molding sand are still bigrestrictions to the promotion of V-process.In this paper, sand mold temperature is measured when casting forklift weight, aswell as surface temperature of the casting after shakeout. Also temperature simulation iscarried out, of which the result is well fitted with the measured. By studying and analyzingthe simulation result, this paper proposes the time ranges under different vacuum to reducevacuum wasting. Though the shakeout time put forward here is longer than actualproduction, it can guarantee forming quality and reduce scrap rate of casting.For sand dust problem, combine with the production design needs, this paperanalyzes gas flow field of common dust cooling equipment--boiling cooling bed and dustseparation efficiency of small particles of different size. The results show that, FTB70boiling cooling bed can separates particles smaller than50μm effectively, but when itcomes to particles between60μm and90μm, the separation efficiency is very low.According to track shoes casting project, a automated V-process production line isdesigned in this paper, including its production parameters and layout graphic. At the sametime, temperature simulation as aided method is used to calculate vacuum hold-up timeand cooling time that help design the pouring and cooling line, and analysis of dustseparation efficiency of boiling cooling bed design the sand preparation line.