Our Business BUSINESS

Introducing Our Business

Reliable product manufacturing using ductile iron,
focused on high strength and stable quality

While castings are often perceived as lacking in strength, Senshu achieves the production of high-strength castings using premium spheroidal graphite cast iron (ductile iron).

Below are some of our representative products.

Manufacturing processFLOW

Senshu's Casting Manufacturing Process: Always Pursuing the Latest

With the motto of delivering high-precision, high-quality products that meet the demands of the times to the market, we have introduced state-of-the-art equipment and applied all our accumulated and proprietary technologies throughout the entire manufacturing process. Here, we introduce the manufacturing process that produces high strength and high quality.

  • Melting

    Raw materials are melted in a high-frequency induction furnace and adjusted to target composition. Material blending and metering are automatically controlled to ensure stable quality.

  • Composition Inspection

    The composition of molten metal from the high-frequency furnace is measured and controlled at the furnace front using a CE meter and vacuum-type kant recorder.

  • Sand Processing

    Automatically metered used sand, new sand, binder, and water are mixed to produce stable mixed sand, which is then supplied back to the molding machine.

  • Molding

    Molding is performed on the optimal line—either the DISA line or AMF line—based on product shape and quantity.

  • Casting

    Castings are continuously processed through pouring → cooling → flasking removal → shot blasting.

  • Finishing/Grinding

    We promote rationalization by introducing CNC automatic grinding machines and press die punching.

  • Dimensional Inspection

    For new product launches, dimensions are measured using a coordinate measuring machine (CMM) for inspection from all directions.

  • Microstructure Inspection

    Samples are taken to confirm spheroidization rate, pearlite rate, and the presence/absence of chills.

  • Visual Inspection

    All products for shipment are individually inspected by specialized, skilled inspectors.

  • Shipment

    We pre-assemble shipments to meet customer deadlines and perform daily, reliable shipping operations.

FacilitiesFACILITY

  • Melting Equipment

    Equipment Number
    Extra-High Voltage Receiving Substation 1 unit
    High-Frequency Induction Furnace 2500KW/300Hz 3 tons
    (Inductotherm brand)     		4 units
    Automatic Material Weighing System with Automatic Charging Device 1 set
    Gas Engine On-Site Power Generation System 1 set

  • Molding Equipment

    Equipment Number
    Disamatic 230 Automatic Molding Line
    (480 × 600 × 300)    		 1 set
    AMF-IV Type Automatic Molding Line
    (Manufactured by Tokyu Co., Ltd.) (450 × 550 × 200 × 200)     		1 set
    AMF-V Type Automatic Molding Line
    (Manufactured by Tokyu Co., Ltd.) (508 × 610 × 200 × 200)     		1 set
    Sand Processing Equipment for the Above 3 Lines
    (Manufactured by Tokyu Co., Ltd. - Nippon Eirich Co., Ltd.)     		1 set
    Includes Automatic Moisture Control Device and Casting Sand Property Measurement Device 1 set
    Automatic Pouring System (Manufactured by Fujiwa Electric Co., Ltd.) 5 units

  • Finishing Equipment

    Equipment Number
    Foreman Hydraulic Sizing Machine 14 units
    Barinder CNC Automatic Grinding Machine 16 units
    Crawler Finishing Dedicated Machine 1 unit
    Continuous Shot Blasting (Sinto Kogyo) 1 unit
    Batch Shot Blasting 4 units

  • Machining Equipment

    Equipment Number
    Machining Center (OKK) 6 units
    Machining Center (FANUC) 4 units
    Machining Center (Okuma) 4 units
    Machining Center (Mori Seiki) 2 units
    Cleaning Machine 4 units
    Robotic Unmanned Transport Line 1 set

  • Inspection Equipment/Quality Assurance and R&D Testing Instruments

    Equipment Number
    Emissions Spectrometer (with Data Transmission Unit)
    PDA-7000    		 1 unit
    Amsler Universal Testing Machine 30 tons 1 unit
    Amsler Universal Testing Machine 50 tons 1 unit
    NC Lathe (Mazak QuickTurn 15N) 1 unit
    Brinell Hardness Tester (Hydraulic Type) 1 unit
    Brinell Hardness Tester (Bar Type) 1 unit
    Vickers Hardness Tester 1 unit
    Rockwell Hardness Tester 1 unit
    Shore Hardness Tester 1 unit
    Ultrasonic Flaw Detector 1 unit
    Inverted Metallurgical Microscope 1 unit
    Handheld 2 units
    Microstructure Image Analysis Processing System 1 set
    Foundry Sand Testing Equipment 1 set
    Coordinate Measuring Machine (Tokyo Seimitsu) AXCEL 1 unit
    Coordinate Measuring Machine (ZEISS) DURA MAX 1 unit
    3D Scanner (Keyence) VL-300 1 unit
    3D Scanner (Keyence) VL-700 1 unit
    3D Scanner (CREA FORM) Handy Scan 3D 1 unit
    Solidification/Metal Flow Analysis Software JS-CAST 1 unit
    3DCAD Think Design 1 unit
    3DCAD SOLID WORKS 2 units
    3DCAD NX（Siemens） 1 unit