Core box assembly with wear strip
AssigneeFMC Corporation
InventorJohn J. Uppgren
Life of this patent
Estimating the term…
Abstract
A core box assembly includes an outer aluminum box containing an inner plastic or wooden mold section having a core depression therein adapted to receive mold sand. A strike-off surface on the box and mold section surrounds an opening providing access to the core depression. A peripheral portion of the strike-off surface is removed so that a step is formed around the periphery of the aluminum box. A portion of flat steel plate is formed with a centrally disposed opening therethrough and is fixed on the assembly with its upper surface in the plane of the strike-off surface, its outer boundary coincident with the outer boundary of the aluminum box, and its inner boundary abutting the step.
Claims9
A core box assembly, comprising
- a core box of a relatively soft material,
- a strike-off surface on said core box,
- said core box having a core depression therein adapted to receive a mold sand and forming a mold opening in said strike-off surface.
- said strike-off surface having a recess therein surrounding and displaced laterally from the edges of said mold opening,
- a continuous strike-off member of a relatively hard material formed to fit within said recess, thereby surrounding said mold opening and lying substantially flush with said strike-off surface, whereby mold sand may be leveled at said mold opening with a strike-off bar which is guided by the upper surface of said strike-off member and erosion of said strike-off surface is substantially eliminated.
A core box assembly wherein a core box of relatively soft material surrounds a core depression therein which is adapted to receive a mold sand and which forms an opening in a strike-off surface on the core box, comprising
- a continuous strike-off member formed of a relatively hard material and having an opening therethrough with opening boundaries greater than and spaced laterally from the boundaries of said core depression opening,
- said strike-off surface having a recess formed therein to receive said strike-off member so that the surface of said member is substantially in flush relationship with said strike-off surface surrounding said core depression opening and the surface of said member guides a strike-off bar passed thereover, whereby abrasion of the strike-off surface caused by leveling of the mold sand with the strike-off bar is inhibited.
Dependencies are inferred from the claim text.