5 minutes to know What is Metal Stamping

Many manufacturers in the industrial field depend on metal stamping suppliers to fabricate various elements for their machinery and equipment or to assist them in specific operational procedures. This method enables the production of intricate forms from sheet metal in a fast, dependable, and efficient manner.

The primary factors driving numerous industries towards adopting this technique for the production of robust components and goods are its cost-effectiveness, superior craftsmanship, and swift manufacturing pace.

What is metal stamping?

The process of sheet metal stamping, alternatively known as metal forming, employs a stamping press and tooling known as dies to convert sheet metal into a desired shape or design. Various techniques are utilized by the die surface and the tool to manipulate the metal until the desired form or shape is attained.

The term “die” refers to the tooling employed to shape the end product. This method of manufacturing facilitates the production of metal parts in medium to high volumes, catering to projects or requirements at cost-effective rates.

The primary factors driving numerous industries towards adopting this technique for the production of robust components and goods are its cost-effectiveness, superior craftsmanship, and swift manufacturing pace.

What is Metal Stamping

Metal stamping techniques

Blanking

Blanking involves the removal of a workpiece from the primary material to create the desired form. Unlike punching, the removed workpiece becomes the desired shape or blank.

Punching

Punching refers to the use of a die and a punch to cut sheet metal into the required form. During punching, the punch enters the material attached to the die and dispels pieces of metal to create the desired form in the remaining workpiece.

Coining

Coining involves the placement of the material between a die and a press or punch. The material is squeezed with extreme force during the press stroke to generate fine features and tolerances on the surfaces of parts.

Bending

Bending refers to processes that form sheet metal into desired bent shapes, which are generally the L, U, or V-shapes. The bending process is applied above the material’s yield point and around a single axis to form the desired shape.

Flanging

Flanging involves the use of a die and a flange or flares produced by a flanging tooling section on a workpiece. The flange portion of the tooling and die form the desired shape in the workpiece.

Drawing/Forming

Drawing or forming involves the use of compressive force to form sheet metal into a cavity or produce a shaped form by wrapping the workpiece over the desired shape in the die.

Embossing

Embossing involves the use of a die and a pressing or stamping machine to apply the shaped die to the material. The embossed pattern or designed form is then imprinted on the workpiece.

Curling

Curling is used to eliminate sharp edges or form sharp edges into hollow rings according to a specific design. Once performed, curling also increases the moment of inertia at the curled end of the workpiece.

Piercing

Piercing involves punching or cutting out holes in closed shapes in a workpiece. The punched-out portion is discarded, and the pierced pattern forms the end-use part.

These diverse metal stamping techniques are done individually and can be combined or done in multiple operations to form the intricate parts a project requires. The peculiarities of individual projects are the major determining factors when choosing which metal stamping techniques to apply. For example, a simple bent design can be developed using bending, while intricate tooling sections may combine flanging and piercing or any one of the other techniques outlined above.

Types of metal stamping

Metal stamping encompasses various techniques that employ diverse methods to produce high-quality finished parts. The three primary types of metal stamping are Progressive die stamping, Deep draw stamping, and Fourslide stamping.

Progressive die stamping 

Progressive die stamping involves the movement of strip metal through a progressive stamping press, where it passes through different stations. Each station performs specific functions, such as forming, punching, bending, and cutting the metal. Complex projects often require multiple stations, and progressive stamping offers advantages such as quick turnaround, uniform piece production, and lower labor costs compared to other stamping types.

Deep-draw stamping

Deep-draw stamping utilizes a punch to feed a blank into a die. This technique is suitable for projects that require extreme depths in the part shape, commonly seen in the Automotive and Aerospace industries. Deep drawing consumes less raw material and is well-suited for high-volume production of less-complicated pieces.

Fourslide stamping

Fourslide stamping simplifies the creation of complex parts by employing four tools that simultaneously bend the metal into the desired shape. While fourslide stamping may not produce pieces with the same level of uniformity as progressive stamping, it allows for easier changes or adjustments to the design when a project involves multiple parts with different bends.

How to Choose the Right Metal Stamping Material for Your Project?

Metal stamping utilizes two primary categories of materials: ferrous and non-ferrous. Ferrous materials are composed of iron, whereas non-ferrous materials do not contain iron. Listed below are commonly used materials in metal stampings, along with specific applications and advantageous qualities for each material that can influence the selection process.

Ferrous Materials:
  1. Carbon Steel: Carbon steel is a widely used ferrous material in metal stamping due to its strength, durability, and cost-effectiveness. It finds applications in automotive components, construction, and industrial equipment.
  2. Stainless Steel: Stainless steel is known for its corrosion resistance, making it suitable for applications in the food industry, medical equipment, and outdoor structures.
  3. High-Strength Steel: High-strength steel offers excellent mechanical properties, allowing for weight reduction while maintaining structural integrity. It is commonly used in automotive and aerospace industries for safety components and structural parts.
Non-Ferrous Materials:
  1. Aluminum: Aluminum is lightweight, corrosion-resistant, and possesses excellent thermal and electrical conductivity. It is frequently utilized in the automotive industry, aerospace components, and consumer electronics.
  2. Copper and Copper Alloys: Copper and its alloys exhibit high electrical and thermal conductivity, making them ideal for electrical connectors, heat sinks, and plumbing applications.
  3. Brass: Brass provides good formability, corrosion resistance, and aesthetic appeal. It is commonly employed in decorative applications, electrical connectors, and plumbing fixtures.

The choice of material in metal stamping depends on the specific requirements of the application, such as desired strength, corrosion resistance, conductivity, and cost considerations.

To achieve high-quality and cost-effective metal stamping, careful material selection is crucial. By taking into account important factors and collaborating with a reliable material supplier, it is possible to choose the right material that meets specific requirements and yields dependable, top-notch stamped parts.

Several considerations should be taken into account when selecting materials for metal stamping, including durability, formability, thickness, hardness, and corrosion resistance. Additionally, the end-user application and the specific fabrication process must be carefully evaluated to ensure optimal material performance.

Collaborating with a trusted material supplier is vital for successful metal stamping. A reputable supplier can assist in ensuring that the chosen material adheres to the necessary specifications, maintains consistent quality, and can be effectively stamped into the desired shape. Their expertise and support contribute to a streamlined and efficient stamping process, resulting in high-quality finished parts.

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