Long Carriage Roof Mounted Dart Machines

Long Carriage Roof Mounted Dart Machines

Monocon's Type 1 Dart machine is a long carriage, roof mounted machine design as shown to the right.

At the end of 2016, Monocon had supplied 15 of this type of dart machine to six steel plants around the world.

As shown, when the dart machine is in its 'park position' it is tucked up in the roof space allowing clear operational access at floor level. In operation, the suspension arms lower the dart machine into position so that it can extend and drop the dart through the access opening and into the furnace. Click here to see the standardised dart machine features.

Monocon has developed and supplied many dart machines for clients operating in the steel and metals industry all around the world including UK, Mexico, USA, Russia, Australia, Sweden, India, Brazil, Ukraine, Taiwan, Turkey, Algeria, Chile, New Zealand and The Netherlands to name just a few. At the end of 2016, Monocon had supplied over 90 Dart Machines to almost 40 Steel making plants throughout the world.

Our experience in this slag control sector is second to non and includes the design, manufacture, refurbishment and installation/commissioning of all types of dart machines from pantograph and turret to telescope, side swipe and track mounted, as listed to the right. We have developed 10 generic dart machine models with Types 1-9 detailed below.

Unlike some other competitive systems, our slag control technology reduces slag carry over from the three main categories (Pre-tap slag, Vortex Slag and End of Tap Slag).

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Design Features

Dart Machine Design Features

  • PLC control with pre-stored programs and movement cycles.
  • Consistent and accurate dart grab.
  • Robust machine construction.
  • Can be configured and used in conjunction with Automatic dart loading machine.

Our Monocon dart loading machines are typically used with certain types of Slag Dart machines in steel plants who look for a turnkey supply solution for slag control. A special dart cassette is used to transport a number of pre-assembled darts to the operations floor. The special dart cassette is placed adjacent to the Dart Machine and following the insertion of a dart into the furnace the dart machine is re-loaded with a new dart ready for the next heat.

Safety Benefit

Generic Dart Machine Safety Benefits

  • Dart loading machine ensures that the operator is positioned remotely from the application/heat source and moving machinery.
  • Minimal manual lifting or intervention which can cause possible injury.
  • Emergency Shut-off.
  • Optional customised guarding to suit customer requirements/physical constraints.

Monocon provide a multitude of safety interlock facilities to enable safe use of the equipment. These interlocks are incorporated into the PLC operation. Safety systems are to be determined with customer but will typically include; Dart Machine Movement, Ladle Geometry, Emergency Stops and Failed Dart Loading.

Technical Specification

Generic Dart Machine Technical Features

  • XYZ axis movement of dart via heavy duty electric drive motors.
  • The machine is a fabricated mild steel construction with access covers where necessary.
  • Designed to be used in conjunction with Monocon Darts. (Alternate dart designs considered where required).

The Electrical Control System will typically consist of the following:

  • PLC Panel - typical supply; 220/110V single phase.
  • Control Console - typical supply; 220/110V single phase.
  • Inverter Panel - typical supply; 415V, 3 Phase, 50 Hz.
  • PLC based Electrical control panel: Standard is Mitsubishi PLC. (Other options are available).

Onsite Services Required

  • Electrical: - 415V, 3 PH, 63A.
  • Pneumatic:-90 PSI (6 bar), 8m3/min Maximum, 50mm Bore Supply.
  • All services are to be provided in close proximity to the material feed system.

Supply Options

Generic Dart Machine Supply Options

  • The Dart Loading Machine can be configured and/or customised to suit the clients requirements.
  • All surfaces can be painted in accordance with the customer specification.
  • Customised machine guarding to suit customer requirements/physical constraints.
  • Alternate PLC Panel options are available such as an Allen Bradley unit with Ethernet/IP protocol or Siemens PLC with Profinet.
  • UPS - mains power spike/failure protection.

Please contact our UK technical team for further information.

Cost Benefit

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