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Process Conversion: From Welded Assemblies to Integrated Casting for Mining Equipment

Customer Requirement & Initial Situation

  • A global OEM in the mining industry was producing a Balancer part using welded assemblies.
  • Their challenges with welded construction:
  •          o Multiple fabrication steps → longer cycle time.
  •          o Higher labor & inspection costs.
  •          o Weld joint weaknesses under heavy loads.
  •          o Inconsistent quality due to manual processes.

Limitations of Welded Parts

  • High Manufacturing Time: Cutting, welding, grinding, and inspection required for each part.
  • Structural Weakness: Welded joints had stress concentration points.
  • Higher Rejection Rate: Dimensional variations from multiple processes.
  • Cost Inefficiency: More operations = higher production cost.

AMSOL’s Engineering Solution

  • Proposed process conversion: Replace welded construction with integrated casting design.
  • Benefits of integrated casting:
  •          o Higher strength due to monolithic structure (no weld joints).
  •          o Reduced cycle time by eliminating multiple fabrication steps.
  •          o Better dimensional accuracy with casting + machining.
  •          o Cost savings from simplified manufacturing.

Execution Steps by AMSOL

  • Design Feasibility Study
  •          o Redesigned welded assembly into a castable geometry.
  • Pattern & Tooling Development
  •          o Created robust casting pattern for repeatable production.
  • Casting Production
  •          o Manufactured balancer as a single integrated casting.
  • CNC Machining & Finishing
  •          o Ensured dimensional tolerances and surface finish.
  • Testing & Validation
  •          o Verified mechanical properties & load performance under mining application conditions.
  • Customer Approval
  •          o Prototype approved, leading to series production.

Achieved Results

  • Reduced manufacturing process time significantly.
  • Improved strength & reliability compared to welded assemblies.
  • Faster production cycle, enabling higher volumes.
  • Consistent quality with reduced rejection rate.
  • Cost-competitive solution for OEM customer.

Customer Benefits

  • Higher equipment durability in demanding mining environments.
  • Optimized production schedule with faster deliveries.
  • Reduced maintenance & downtime due to stronger parts.
  • Long-term savings from lower rework and inspection costs.

AMSOL Value Proposition

This case highlights AMSOL’s ability to:

  • Convert complex welded assemblies into simplified cast designs.
  • Deliver higher strength, lower cost, and faster production.
  • Support global OEMs with process innovation and 360° manufacturing solutions.
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