RLH-A

RLH-A

The RLH-A offers real advantages when it comes to remote laser hardening of intricate component structures. It enables process-reliable hardening depths in the 0.1-millimeter range along with a variable design of the spot geometry. Individual material surfaces can be hardened selectively with contour accuracy – all with a single processing optic. In the past, different optics with corresponding spot shapes were required for different components. Now, the RLH-A handles every hardening task.

Function description

The RLH-A uses a highly dynamic 1-D scanning unit to create variable track widths. During the scanning motion, the temperature is recorded coaxially to the laser beam at the laser target location. The process temperature is then regulated according to the location by varying the laser power and scanning speed. The patented control circuit has a two-stage design to ensure maximum regulating speeds. This prevents melting of thin-walled components or edges. Thicker workpieces with higher heat capacity can also be sufficiently hardened.

Areas of application

  • Suitable for a wide variety of hardening tasks on intricate and complex component structures, the RLH-A is ideal for a full range of powertrain and automation applications.
  • Geometries with different component thickness, variably shaped edges and steps
  • Softening and de-consolidation are also possible

Advantages

  • Hardening with a single processing head – for various contours on a single component
  • Selective hardening of components with multi-dimensional curved surfaces, holes or notches; components that are prone to distortion
  • Edge layer hardening in the 0.1-millimeter range, the core remains ductile
  • Precise adjustment of process parameters – also during the process
  • Short setup times
  • Precise local and targeted energy input

Properties

  • Variably adjustable process parameters: track width left/right, pre-heat temperature, hardening temperature, power, de-focus and emissions coefficient, energy input with variable focus shape
  • Reliable hardening and quality with highly-dynamic temperature control
  • Modular construction with the Scansonic scapacs® system – practically limitless adjustment of optical characteristics, fiber couplings, fieldbus interfaces, etc.
  • Parameterization with special software (GUI)

Supported Laser

  • Diode lasers
  • Solid state lasers
  • Fiber lasers

Features

Variable fibre coupling

  • Trumpf-D
  • Trumpf-B

Pyrometer

  • Integrated camera-based pyrometer
  • The path of the pyrometer measurement beam is coaxial with the path of the laser beam
  • Thus the scanner also moves the pyrometer’s measurement field

Monitoring camera

  • Integrated coaxial-aligned monitoring camera; camera observation is independent of the position of the scanner mirror
  • Thus the component remains still for the observer (this is not the case for the pyrometer camera)
  • The location of the hardening track can be checked easily and securely using the camera
  • So the initial commissioning process is faster and less prone to errors

Scanner unit

  • Highly dynamic scanner unit
  • 1-D linear projection
  • Variable programming options for the scanned line (wide left, right and centre position)
  • External cooling for the entire optics and the scanner unit. This prevents the penetration of cooling water into the optical system
  • Flange mounting on the robot
  • Can be quickly swapped out with high-precision tool coupling
  • Measurement for the optics, just as for all scapacs® devices, is enabled at the appropriate measuring stations

Controller

  • Modern, bus-based control strategy
  • Actuators and sensors are bus nodes
  • The RLH controller is the bus master and is separated from the RLH processing head
  • Controller can be installed as needed (for example, in the facility’s equipment cabinet)
  • The RLH system can communicate with the production facility on different Fieldbus types, such as Interbus, Profibus, Devicenet, Profinet, Ethernet/IP
  • A facility PC can be used for parameterization. The PC can also be used
Laser powermax. 6 kW
Optical ratioFiber / Disk laser: 1:3.2, Diode laser: 1:5.1
Beam parameter product (BPP)Fiber / Disk laser: ≤ 25 mm mrad, Diode laser: ≤ 60 mm mrad
Total angle of acceptanceFiber / Disk laser: 250 mrad (99% power capacity), Diode laser: 485 mrad (99% power capacity)
Track width in TCPmax. 30 mm
Measuring range of pyrometer+800 bis +1600°C
Type of liquid coolantsuitable for DI water (stainless steel version)
Amount of coolant1,4 l/min at least, depending on the laser power used
Ambient temperature range+10°C to +45° C (operating, non – condensing)
Laser protection class4
Power supply230 V / max. 16A (external), 24V / 10A (internal)
IP-IP protection degree64 (with fiber optics cable plugged in)
Weightapprox. 17.5 kg (processing head)
  • Pointer with adjustable focal point
  • Monitoring camera for precise path programming
  • Crosshairs generator for representing the laser spot
  • External line projector for safely adjusting the working clearance gap
  • Quick-lock function ensures quick-lock/quick-release functionality
  • Can also interface with data logging tools
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