The structure and technical requirements of a large supper long machining center bed was introduced.The production technology was described in respects of pattern tools materials selection,mold parting surface selection,gating system design and molding process.After practical production verification,no mold shift being occurred,deformation of bed body was controlled less than 5 mm,no cracking,blowhole and sad inclusion defects,hardness of the casting met technical requirement.Finally pointed out:for the large supper long machining center bed,selecting at first unpressured,then pressured gating system,under the condition of no filter,the gating system also could skim slag and reduce the flow velocity in ingates.The model was made in two sections was favoring to control the bending of the large supper long machining center bed.
关键词
灰铸铁/超长床身/铸造工艺
Key words
gray iron/supper long machining center bed/casting method
维普
万方数据