ENGINEERING The engineering staff performs a thorough review of the pattern equipment before the casting process begins. It includes a review of the pattern equipment for compatibility to our foundry. Foundry engineers inspect the equipment and design a risering and gating scheme that will meet the customer requirements.

FOUNDRY Cores and molds are made with silica or chromite sand and a phenolic urethane chemical no-bake binder system. Cores are made by hand or with a semi-automatic three station Bi-Core core blowing machine. For quick response manufacturing of smaller castings, molds are made on a flaskless fast loop line. Larger castings are made in tight flasks on the floor.

MELTING, POURING, AND HEAT TREATING Metal is melted in five different induction furnaces ranging in capacity from 500 pounds to 6,500 pounds. The chemistry of each heat is measured with a Spectro optical emission spectrometer. Bottom nozzle as well as tea pot ladles are used to pour the metal. Castings up to 5000 pounds are made with 130 different alloys of steel, stainless, and nickel base. Two gas fired, ceramic lined heat treat furnaces are used to achieve the required mechanical or corrosion resistant properties.

FINISHING Castings are shot blasted, ground, and welded to meet the customers quality requirements. The welding procedures used include SMAC, FCAW, TIG, and SAW. All procedures and welding personnel are certified to ASME Section IX requirements.

NON-DESTRUCTIVE EXAMINATION Non-destructive examination procedures used at the Chehalis facility include Ultrasonic, Magnetic Particle, and Liquid Penetrant Examination. All castings are visually and dimensionally examined. Radiographic Examination procedures are performed at the Tacoma facility.

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