Microwave Shell Drying System

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2 Shell Drying System Advantages & Key Features Super Fast Dry Drastic lead time reduction in lost wax shell production. ( 5 days to 4 hours - 96% reduction rate Wax temperature kept low - approximately 25C ( 77F. Combination use of microwave and cold air facilitates fast shell drying. No Shell Cracks. Numeric Dryness Measurement with Shell Weight Change. ( PATPEND Both Normal and Special Applicable. Flexible Application. Simple and Easy Operation. Drying Furnace for Complex Shaped Molds Applications Example 1 Full Automatic - Suitable for Large Item Small Volume Production - Dry Shells in Short Time - Only 30minutes per layer BH Drying Furnace BH 6-8 Day 5 Day 4 Day 3 Day 2 Day ed Shell Conventional Dry Time Comparison 8 th 7 th 6 th 5 th 4 th 3rd 2nd 8 - ed Shell Air blower 4 hours Whereas with conventional methods of shell drying it takes approximately 2-3 hours for the 1 st and 2 nd layer, 3-4 hours for 3 rd -5 th layers, and 4-8 hours for the following layers, Japan High Comm furnace dries shells only in 30 minutes per layer. Molds with Hole Sand Tank B Sand Tank A Blower Tank B Control Panel > Unload mold tree from conveyor with robot. > Dip mold tree into slurry and coat sand. > Put mold tree into multiple microwave drying furnaces by turns. Tank A Tree Hanger Conveyor Total System Control Panel C

3 Shell Drying System Applications Shell Drying Mechanism with Example 2 Full Automatic - Suitable for Small Item Large Volume Production - Conveyor Air blower : Drying Furnace > Unload mold tree from conveyor with robot. > Put mold tree into microwave drying furnace > Put mold tree into clod air blower tunnel. Mold Temperature Change in Distribution (Estimation Tree Surface Temperature Comparison - Natural Seasoning Dry vs. Dry Natural Seasoning Dry Dry Tree Wax Mold Mold Tree Wax Mold Mold n-1 24 n-1 24 layer layer n layer 24 n layer 24 ΔTS ΔTS Dip Dip Temperature drop by Temperature drop by moisture vaporization heat moisture vaporization heat Mold surface temperature rise by microwave distribution Mold surface n layer temperature Drying 24 Distribution 24 Process ΔT1 ΔTM1 Before dry Before heating Mold surface temperature after tempering Dry with tempering n layer 24 after ΔTM2 Dry 24 microwave distribution Temperature inside of mold is slightly higher than room temperature. n + 1 n + 1 layer 24 layer 24 ΔTM3 ΔTS Dip Dip Temperature drop by moisture temperature vaporization heat Initial dry Middle dry Final dry Completion Moisture Content Transition Conventional Style HIGH COMM Style Lost wax Humidity +Sand Wind Moisture First-half Second-half Completion dry dry Lost wax Humidity Inside of Mold during Dry Process Drying Furnace BH BH 6-8 Sand Tank B Sand Tank A +Sand Wind Moisture Complete after tempering Tree Hanger Conv Example 3 Top View Semiautomatic - Suitable for Small Item Large Volume Production - The following operation will be done by operator. > Hang mold tree to hanger conveyor. > Put mold tree into microwave drying furnace. Tank A Humidity Reduction during Blower Drying Tank B Time Total System Control Panel Control Panel Temperature Transit after Dipping and Sanding Temperature: Started from 18C (64.4F, reached the target temperature 25C (77F in 30 seconds and controlled at 25±2C (77±35.6F. Humidity reduced from 60% to 55% in 7 minutes. Humidity (% Temperature Side View Mold Weight 7 minutes Start of Drying During Drying Process

4 Shell Drying System Specifications Suitable Use Ordinarily Manufactured Goods Large Production Complex Shape Mold High Quality Large Sized Mold Model Type B B G2.5 Prototype (light use Prototype Upgraded Prototype B G2.5 B G1.5, G2.5 B G1.5, G2.5 Available in December, 2013 Hardware Software Safety Production Control Inside Dimension of Furnace 950 x 950 x 1200 mm (3'11" x 3'11" x 3'94" 950 x 950 x 1200 mm (3'11" x 3'11" x 3'94" 1350 x 1350 x 1855 mm (4'43" x 4'43" x 6'09" 1350 x 1350 x 1500 mm (4'43" x 4'43" x 4'92" 1350 x 1350 x 1500 mm (4'43" x 4'43" x 4'92" Material of Furnace Inside Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Hanging Device Tree Hanger No. of Trees/Batch (4 axis Capacity Weight 5-15kg x kg x kg x kg x kg x 2 ( lb ( lb ( lb ( lb ( lb Type 850W 2.5KW 2.5KW 1.5, 2.5KW 1.5, 2.5KW Generator No. of Unit Location Back Back Both sides One side+bottom One side+bottom Blower Side Flow Side Flow Up Flow Up Flow Up Flow Fresh Air Supply into Furnace Silencer Filter Air Circulation Fan Inside of Furnace Air Blow nozzle for Hole Y Mold Turning Functions Y Y Mold Handling Manual / Manual / Manual / Handling Equipment Manual / Manual / Measurement Y Y Temperature Control Function Y Y Control Method ON/OFF Control ON/OFF Control ON/OFF Control+ Inverter ON/OFF Control + Inverter ON/OFF Control + Inverter ON/OFF Control + Inverter Measurement Y Temperature Control Function Y Distribution Control Method Y Air Blower Control Manual Manual Inverter Inverter Inverter Air blow Direction Switching Control Mold Dryness Measuring System N Y N Mold Detecting Function Y Y Y Safe Door Closing Function Alarm in Door Opening and Closing Link with Production Control System Y Y Barcode Reader Y Option Option Y: Yes N: No

5 Ishikura-machi, Maebashi-city, Gumna, , JAPAN Phone: +81( Fax: +81(