TU13_Punch&DieOperation Vocab Flashcards
Beading
A forming operation that creates a curved rim around the top of a hollow part. It is another term used for a curling operation.
Blank
The section of sheet material resulting from a shearing operation that is usually subjected to further metalworking operations.
Cold Working
The shaping of metal at temperatures much lower than the metal’s molten state, often at room temperature. It adds certain properties to the metal, such as increased strength and improved surface finish.
Curling
A forming operation that creates a curved rim around the top of a hollow part.
Drawing
For sheet metal, a forming operation that transforms a flat disc of stock into a hollow cup with an enclosed bottom. These operations can also create boxes and more intricate shapes as well.
Embossing
A metalworking operation used to create raised surfaces or lettering in sheet metal. There is theoretically no change in metal thickness during this metal working process.
Flanging
A bending operation that bends the edge of a part in order to add stiffness. It most often creates a 90° bend in the metal.
Forming
The plastic deformation of a metal in order to produce a useful shape. Some these type of operations include shearing, stretching, bending, or compressing metal.
Hemming
A bending operation that bends and folds an edge of sheet metal back upon itself. This conceals the sharp edge of sheet metal.
Hardness
The ability of a material to resist penetration and scratching. It is one of the mechanical properties of a given material.
Hot Working
The shaping of metal at temperatures close to the metal’s molten state. These type of metals are often left with a rough, scaly exterior.
Lancing
A shearing operation that cuts an interior section of the metal without removing the section. This operation leaves an opened metal tab.
Necking
A forming operation that reduces the diameter of a portion of a hollow cylindrical part. This can also slightly lengthens the part.
Nesting
The arrangement of a series of part dimensions on sheet metal that attempts to reduce the amount of metal scrap produced during the press operation.
Plastic Deformation
Deformation that is permanent. This deformation occurs after excessive elastic deformation.
Seaming
A bending operation that joins the interlocking edges of two separate metal sheets together by folding them over one another.
Shear Strength
The ability of a material to resist forces that attempt to cause the internal structure of the material to slide against itself.
Swaging
A forming operation that reduces the diameter of a portion of a hollow cylindrical part. This is another term used for a necking operation.
Wiping Die
The tool used in an edge bending operation that provides the corner over which the extended portion of sheet metal is bent.
Slug
The discarded section of metal resulting from a punching operation.
