Borehullsutforming

Borehullsutforming is a metal processing technique that combines boring and forging to produce complex curved shapes. The term is of Scandinavian origin, with "bore" meaning to drill or bore, "hull" referring to a hollow or curved shape, and "suttforming" meaning to form or shape.

This method involves drilling a hole in a solid piece of metal to create a curved or rounded shape. The metal is then subjected to mechanical stress through forging or hammering, which causes it to deform and take on the desired shape. The resulting component can have complex internal and external geometries, including curved surfaces and hollows.

Borehullsutforming is a versatile technique that can be applied to various metals and alloys. It is particularly useful for producing aircraft components, such as curves, concave surfaces, and dowells. The technique can also be used to create other complex shapes, such as propellers and induction armatures.

Compared to traditional forging methods, borehullsutforming can reduce the amount of material required and improve surface finish. However, the process requires specialized equipment and expertise to achieve consistent results. Manufacturers must carefully design and machine the initial blank to ensure optimal deformation during the forging process.

Research on borehullsutforming has focused on optimizing process parameters, such as temperature, deformation speed, and grain structure. Results have shown improved fatigue resistance and reduced cracking rates, making it a viable option for high-stress applications. Borehullsutforming is an emerging technology that holds promise for expanding material possibilities in aircraft and ship construction.