Design News for Mechanical and Design Engineers

Numerous finish options are available for aluminum extrusions and selecting a surface finish of an extruded component can be a critical design decision. During the extrusion process, a corrosion-resistant film forms on the surface that provides a durable protective barrier. Additional protective barrier. Additional finishes will depend on the aesthetic and functional requirements of the extruded part and finished product.

Anodizing is an electrochemical process that creates a significantly thicker layer of oxide than occurs naturally. This provides protection against mechanical wear and corrosion at the same time as electrically insulating the surface.

Anodizing is an electrochemical process that creates a significantly thicker layer of oxide than occurs naturally. This provides protection against mechanical wear and corrosion at the same time as electrically insulating the surface.

Etching is a process that either takes place in acid or alkali solutions. It removes small, evenly distributed impurities on the surface such as oil, dirt and the ever-present oxide layer.

Special surface finishes can be achieved by mechanical treatment such as polishing and brushing. These methods remove all small faults on the surface, provide uniformity and make further treatment possible for a reflective or decorative surface.

Typically, fan shrouds are attached to the radiator and are designed with a larger-than-optimum circumference to avoid interfering with the fan affixed to the engine block. This unique fan shroud helps improve the airflow and operating efficiency of truck engines.

If untreated, aluminum's high coefficient of thermal conductivity can be problematic in applications where low heat transfer is desirable such as in windows. Insulation can easily rectify this issue. Learn these two commonly used techniques greatly reduce heat conduction.

Bending, or forming, an aluminum extrusion is the process of manipulating the material beyond its yield strength until it retains its new form. Bending is a tightly controlled process that allows for high shape accuracy.

Find out how aluminum extrusions can be designed to minimize the need for further processing, making assembly and final production easier, more cost-effective and efficient. Find out how aluminum extrusions can be designed to minimize the need for further processing, making assembly and final production easier, more cost-effective and efficient.

Good sawing properties of aluminum do not just depend on the alloy and its condition but also the relationship between the tool and its design, the lubricant and the metal. Higher sawing speeds can be achieved with aluminum than with steel. And the greater the sawing speed, the more economical the solution.