Nodularity control through velocity measurement is an established practice in plants manufacturing cast iron structural components. The aim being to measure the relative percentages of grey and ductile iron in a given part. Currently, the general practice is a manual or automatic spot test with oil coupling, but a much higher efficiency and lower overall process cost is achieved by using dry coupling, as utilised in the Autoscan 2400.
Advantages of the Autoscan 2400 over alternative products include
- Full process automation and control
- Precise and consistent transducer placement
- Dry-coupled transducer avoids couplant/oil contamination of part
- Reduces cost by eliminating couplant and cleaning
- Durable ‘IP67’ instrument enclosure
- Choice of digital or analogue outputs
- Direct read out of velocity
- User programmable alarm limits
ULTRASONIC FLAW DETECTOR
The Autoscan 2400 has been developed from the Sonatest SS240 digital flaw detector.
This proven full-featured flaw detector has been sold to more than 50 countries. When not required for in-line use, the Autoscan 2400 can be used as a portable flaw detector for a variety of industrial applications.
TRANSDUCERS & DELAY LINES
To optimise the performance of the Autoscan 2400 a specific series of transducers has been developed. The result is medium damped straight beam probes for dry coupling nodularity control with frequencies of 2 and 5MHz available as a standard. These are available as top or lateral mount microdot connectors. Suitable collars can be bought to attach the different delay lines.
Any particular application can be catered for. Depending on the thickness range of the component at the test area, there are a range of state of the art delays of differing dimensions available: interchangeable spherical, rounded tip cylindrical or thin flat
The specific design of the delay has been developed for optimum coupling, acoustic impedance matching and durability under challenging mechanical and environmental testing conditions on rough casting surfaces. A set of spare delay lines is included with the standard Autoscan 2400 package.
BENEFITS & FEATURES
The unit is mains powered, with a front proportional output connector and a velocity measurement mode function, allowing both on-screen display of the measured acoustic velocity value and an analogue or digital output. Alarm threshold setting for acoustic velocity is possible.
SET-UP AND SYSTEM INTEGRATION
The system can be easily integrated into current and new production lines for automatic nodularity control, transmitting the relevant output signals to the relevant PLC or visual indicators (ie. a lightbox) or to a networked or independant digital control system.