Metal Stamping Terminology
Metal Stamping Introductions

Metal stamping is utilized for cost effiency when a sheet metal requirement has a significant quantity range. The metal Stamping quote will include the cost for the tooling (tool & die set) to produce the parts, and also the part cost. These combined costs are compared to sheet metal prices for an anticipated cost savings. Products life will also be a determining factor in the decision making.

Metal stamping by the nature of the industry, is extremely low-labor intensive, as opposed to the sheet metal industry. Another advantage to Metal Stamping verses sheet metal is part uniformity. Because the tooling is basically performing the manufacturing operations and the likelihood of error is decreased. In addition, metal stamping can usually produce tighter tolerances and produce part edges that are almost burr-free.

Standard Types Of Metal Stamping Tool And Die Sets

Progressive Die
A die that performs two or more operations at different stages every time the ram descends. The strip or coil stock of material is advanced through a series of stations that perform one or more distinct die operations on the workpiece. The strip must move through each succeeding station to produce a complete workpiece. Thereafter, a complete part is produced with each stroke of the ram. Progressive dies are typically utilized for Higher Production Quantities.

Compound Die

These dies differ from a progressive die in that they perform two or more cutting operations during the one stroke of the ram in one station only. In order to do this, both the upper and lower members of the die set carry punching and blanking elements, which are directly opposed to each other. In other words, the piercing punches act in the opposite direction with respect to blanking punches.

Blanking And Form Dies

These dies are typically used for lower part quantities or part configurations that do no allow the use of other die applications. The first operation consists of a single die station for the blanking, which is cutting out the part periphery or the part shape. Then another die is set up for the forming operation. Some part geometry requires more of the repeated handling of the part, the costs are higher.

Steel Manufacturing Process

The below DIAGRAM is shown steel manufacturing process at Steel Mill Centre. The processes are from iron ore until metal sheet in coil or in sheet (cut to length).

click to view large DIAGRAM
Calculating A Correct Press Tonage
Blanking Formula
P = L x T x S/2000
where, P = Tons; T = Material Thickness;
  L = Cut Length; S = Material Shear Strength
where, Ssu = Shear Strength Su = Ultimate Tensile Strength;
  Ssyp = Shear Yield Point; Ssyp = Tensile Yield Strenth;
Material Selections

The Material Selections are based on the individual customer needs, functional requirements and industry applications. Different type of metal material mechanical properties are defined on material characteristic, tensile strength, shearing strength, yield point, hardness, surface conductivity, corrosion resistance and lubricity requirements for various type of industry applications.

Refer to the Metal Material Mechanical Properties to select a correct type of metals as per individual requirements.

solution by Spanlogic