Mold and core sands have been specially formulated to reduce gas levels producing castings with high internal quality.

Well suited to higher volume production, the shell process provides important cost-saving benefits. For larger production runs, this can have a substantial cost-saving impact.

Shell Capabilities
Alloys

Flowserve pours stainless steel and nickel-based alloys in accordance with several specifications. Custom alloys can also be produced.

Standards and Specifications

Common specifications are listed below:

• Stainless Steels: ASTM A217; A351; A743; A744; A747; A352
• Nickel Base: ASTM A494
• Heat Resistant Grades: ASTM A297

Melting

• 1000 lb (454 kg) and 4000 lb (1814 kg) coreless induction furnaces

Maximum Weights

• 340 lb (154 kg) gross; 150 lb (68 kg) net

Minimum Casting Wall Thickness

• 1/4 in (6 mm) depending on part configuration

Maximum Casting Size

• Patterns: 15 in x 20 in x 12 in (380 mm x 510 mm x 305 mm)
• Patterns: 20 in x 30 in x 12 in (510 mm x 760 mm x 305 mm)

Tolerances

• ±0.015 in/in (±0.015 mm/mm)

Surface Finish

• 150-200 RMS (as cast)

Quality, Inspection, Testing

A full range of laboratory, mechanical and non-destructive testing services is available as required.

Routine procedures include:

• X-ray fluorescence spectroscopy
• Leco carbon and gas (H, N, O) analysis
• Mechanical testing (tensile and impact)

Miscellaneous Capabilities

• Welding qualified to ASME Section IX Boiler and Pressure Vessel Code
• Blasting with steel or stainless steel shot; aluminum oxide
• Heat treating and quenching
• Pattern, mold and core making
• Acid cleaning