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Solutions • A Cross Member Prototype

A Unique Cross Member Prototype

Casting prototypes are made using different manufacturing techniques from those in production, usually Sand, and so have different mechanical characteristics from the production components they mimic. They look the same, but mechanical differences, particularly in TYE, means significant additional development may have to occur to industrialise any component.

For this cross member, Sarginsons developed techniques that gave the same mechanical performance to the sand cast component as the gravity cast production component, allowing for a rapid and smooth industrialisation. Everything was right first time. Crucially, as this superior component performance frees designers from concerns about industrialisation, they design better products. 

The same technology can also be used for short run production, such as early ramp up production and bespoke product ranges.

A  Production Intent Prototype

Sarginsons was given a demanding brief of developing a lightweight battery cross member with a high yield strength for battery protection. Casting was selected as the preferred manufacturing methodology as multiple features for mounting ancillary components, electrical ports etc, were required.

The Client was Delighted

With significant cost reductions over the previous assembled / welded part, as well as a super lightweight structure, the client has adopted this prototype design across a number of models. The cost reduction was further enhanced by a clean industrialisation as the component moved to mass manufacture. 

Despite a mass reduction of over 30% the sand cast component also exceeded required TYE production performance by some margin.

Digital Twins Are Magical

Having identified TYE issues through Digital Twin Simulations, Sarginsons was able to create a sand cast prototype, with the elevated mechanical properties required of a production component, through manipulating metallurgical microstructures through Smart Cooling. This freed the design process, whilst enabling significant mass reduction without loss of performance. 

Key Points

  • Industrialising Castings Is Problematic
  • TYE Performance Can Be Controlled
  • Digital Simulations Identify Problems
  • Challenging Production Parts Can Be Sand Cast.
  • Enhanced Strength Recycled Aluminium is Available
  • The Best Way To Lightweight Components 

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The First Prototype Casting

Casting prototypes do not replicate the performance of production components so tend to be utilised less than in other industries. Sarginsons can now replicate production characteristics in prototype castings, regardless of the casting process used.

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