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US 4,305,273 AGranted
Method for forging large irregular shapes in a closed-die operation in a conventional open-die press
AssigneeUnited States Steel Corporation
InventorWayne A. Martin
Life of this patent
Estimating the term…
Abstract
A method and apparatus for forging large irregular shapes in a closed-die operation, particularly for forging a blank to be machined to form a fluid end piece of a pump. The blank has a substantially rectangular parallelepiped body and a block projecting sideways from the body. The apparatus has a die opening of a shape to form the blank. In a single operation in a conventional open-die press a heated workpiece is upset and a portion squeezed sideways to form the block.
Claims4
Apparatus for forging an irregular shape, which apparatus comprises:
- means forming a die opening which has generally vertical sidewalls and a portion for receiving a heated workpiece and a portion extending sideways from said first-named portion;
- and
- top punch means positioned above the first-named portion of said die opening for applying force to the top of a workpiece in the die opening and thereby in a single operation upsetting the workpiece and squeezing a portion of the workpiece into the second-named portion of said die opening,
- said means forming a die opening having a generally horizontal recess on at least the sidewalls defining said first portion,
- said recess being intermediate top and bottom edges of said die opening to accommodate flashings formed upon upsetting of the workpiece in said first portion.
2 more elements
Apparatus for forming an irregular shape, which apparatus comprises:
- means forming a die opening which has generally vertical sidewalls and a portion for receiving a heated workpiece and a portion extending sideways from said first-named portion;
- and
- top punch means positioned above the first-names portion of said die opening for applying force to the top of a workpiece in the die opening and thereby in a single operation upsetting the workpiece and squeezing a portion of the workpiece into the second-named portion of said die opening,
- said top punch means having water passages in the part of the punch means overlying said first-named portion of the die opening for minimizing as well as chilling flashing between said punch means and said means forming the die opening during the forging operation.
1 more element
Dependencies are inferred from the claim text.