Permanent Mold Casting

Permanent mold casting, also known as gravity die casting, is similar to die casting and utilizes reusable steel molds to produce molded components. To create a part, molten aluminum is poured into the steel mold via gravity or filled via low pressure. After the casting has cooled, the part is removed from the mold and finished. Permanent mold castings have a high degree of structural integrity, internal soundness and offers superior mechanical properties.

Semi-permanent mold casting involves a similar process but includes the insertion of sand cores to form hollow passageways or to cast intricate geometry that cannot be formed by the permanent mold steel tooling.

Permanent mold and semi-permanent mold castings are used in a wide range of industries requiring pressure tight and structural castings. Products include:

  • Air Cylinders
  • Aluminum Housings
  • Aluminum Wheels
  • Base Housings
  • Cold Plates
  • Compressor Bodies
  • Cooling Fins and Fans
  • Couplings
  • Covers
  • Diaphragm Pumps
  • Differential Housings
  • Electrical Boxes
  • Electrical Transmission Equipment
  • Engine Mid-Plates
  • Fan Blade Hubs
  • Filter Bases
  • Gear Boxes
  • Gear Cases
  • Heating Elements
  • Hubs
  • Hydraulic Cylinders
  • Impellors
  • Manifolds
  • Marine components
  • Oil Pans
  • Pistons
  • Pressure Housings
  • Suspension Components
  • Transmission Channel Plates
  • Transmission Housings
  • Transom Base Mounts for Marine applications
  • Valve Bodies
  • Valve Housings
  • Various Pump Components
  • Wind Generation Equipment

In-House Permanent Mold Casting and Finishing Services

Le Sueur Incorporated provides Low Pressure Permanent Mold, Tilt Pour Permanent Mold and Semi-Permanent Molding services using several aluminum alloys that include 319, 355, 356, A356 & 413. Our foundry has 15 Tilt Pour and 8 Low Pressure Permanent Mold casting work centers and specializes in dimensionally complex and pressure tight applications.

LSI also offers early design engineering involvement, prototyping, and complete in-house machining, finishing and assembly to provide start-to-finish service for your permanent mold project.

Benefits of working with LSI for your permanent mold aluminum casting project include:

  • In-house Core manufacturing consists of Isocure and Shell Core processes.
  • Heat Treatment is provided by (5) bottom drop quick quench ovens.
  • Complete Metallurgical and NDT laboratories.
  • ISO 9001:2015 Registered Quality Management System
  • CAD Systems: Pro/ENGINEER & SOLIDWORKS
  • MAGMA Casting Simulation
  • X-Ray: Digital Radiography (Real-Time), Computed Radiography (CR) and Conventional Film

Learn More About Our Permanent Mold Casting Capabilities

Le Sueur Incorporated specializes in producing dimensionally complex, pressure tight aluminum castings and thermoplastic injection molded components. We offer complete in-house precision machining, finishing and assembly. Please contact us to learn more about our capabilities and discuss your permanent mold casting project!