What is Deep Draw?
Deep drawing manufacturing technology is defined as the stretching of sheet metal stock, commonly referred to as a blank, around a plug. The edges of the metal blank are restrained by rings and the plug is deep drawn into a top die cavity to achieve the end shape that is desired. There are many shapes that can be made through deep drawing and stamping such as cups, pans, cylinders, domes & hemispheres, as well as irregular shaped products.
Deep drawing manufacturing is one capability utilized to form parts to your specific application.
Compared to screw machines, plastic extrusions, tubing and stampings, deep-drawing techniques offer many benefits:
- Starting with flat stock and ending with a tubular part, this process minimizes material waste.
- Superior part-to-part and batch-to-batch repeatability are assured.
- Slitting, flaring and hole punching, normally considered secondary operations, can be performed on the drawing machine.
- Intricate designs not previously possible can be produced.
- Raw material is work hardened during the drawing process, therefore eliminating the need for secondary heat treating on most finished parts.
- Starting stock can be clad or pre-plated with gold prior to the deep-draw process, guaranteeing even coverage of gold on both the OD & ID of microminiature tubes with or without a closed end as small as 0.005" (0.13mm) ID. This process also eliminates the threat of residual acid trapped in the parts, a type of contamination that is commonly found in the barrel plating process.
Drawing is a process of cold forming a flat precut metal blank into a hollow vessel without excessive wrinkling, thinning, or fracturing. The various forms produced may be cylindrical or box shaped, with straight or tapered sides or a combination of straight, tapered, and curved sides. The parts may vary from 1/4" (6mm) diameter parts or smaller to aircraft or automotive parts large enough to require mechanical handling equipment.
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