What Role Does Stamping Play in Fastener Manufacturing?

Metal stamping is a quick and cost-effective method, which is especially useful for large-scale industrial requirements.

FREMONT, CA: Blanking, piercing, and stamping are excellent methods for mass-producing sheet metal parts. Stamping is the technique of pressing a metal sheet into a specific shape. Fasteners are commonly manufactured by stamping aluminum, steel, or copper sheets.

Stamping is the process of cold-shaping a sheet metal using a stamping press. Cold forming deforms metal using dies. In a press, a tool and die surface shape the sheet metal.

Stamping is a mixture of blanking and piercing. Each one necessitates push Blanking, a manufacturing technique involving passing a sheet metal coil into a press and die. The vast metal sheet is punched out to create the blank.

Piercing is a shearing procedure that creates holes or notches in a part. Generally, piercing metal produces a clean cut at high speeds. Specialized piercings include lancing, notching, shaving, and others.

Single-stage stamping produces the component in one press stroke. Multi-stage stamping uses multiple presses with varying tools and dies to deform the element into its final shape gradually. Stamping can be used for short or lengthy runs. A sheet steel coil feeds the high-volume processes.

Plain washers and other flat-profile fasteners are typically entirely produced by blanking and piercing. If the component has a complex or three-dimensional shape, more stamping is required. Consider Belleville washers. The Belleville is also known as a conical spring washer due to its conical shape that flattens under pressure.

During production, the Belleville washer is commonly blanked from a coil of sheet steel before being punctured. It resembles an extra-large simple washer at this point. A final stamping process is usually required to achieve the conical shape.

Stamping can be used to create bent teeth or tabs on lock washers. Lock washers are meant to prevent a threaded fastener from loosening by increasing friction and locking.

Metal stamping is a complex, multi-step operation. Precision is required to manufacture difficult parts. These methods are used to make electrical components, kitchenware and cookware, and automobile and aerospace parts.

Stamping comes in many forms. Here are three:

  • Progressive die stamping involves a series of stamping stations with varying functionalities.
  • Four- or multi-slide stamping uses four sliding tools (instead of one vertical slide) to shape the workpiece.
  • Deep-drawing stamping is a method of shaping blank metal sheets using metal dies.

Many more cold-forming technologies are utilized intricately in the high-volume manufacture of fasteners like nuts, bolts, and screws. Cold rolling is the process of compressing and squeezing sheet metal. Cold forging involves pounding, pressing, or rolling metal.

Stamping is the process of cold forging symbols or letters onto a component. So many bolt heads and nuts, for example, have information like grade branded into them. Stamping techniques offer speed, precision, and cost reductions.

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