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Tryout process aids 


Milling and deburring in a single process step


R


oll-Kraft, a manufacturer of custom roll tooling for the tube and pipe and roll form industries, has


installed an additional cold rolling tryout mill at its headquarters location in Mentor, OH. This addition brings the total to four tryout mills. The company can now test 1.50”, 2.00”, 2.25”, 2.50”, and 3.00” bores. The vertical centers range from 4-1/16” to 10-3/4” maximum. The mills are 12-, 16-, 18-, and 24-pass, which replicate the most prevalent mills in the industry. By choosing to try out tooling at Roll-Kraft, the customer can be


assured that new tooling designs will function as expected and any needed changes can be made prior to taking delivery. “This is another step towards  performance on the customer’s  president, Chuck Gehrisch. “Over the past 2 years, our rolls have performed right out of the box over 97% of the time for our customers, and we’ll continue to make improvements, such as this new tryout mill, to drive that number even higher.”


More information on Roll-Kraft www.roll-kraft.com


Water Hammer in a liquid sampling system


In a liquid analytical sampling system, a common problem has the potential to destroy pressure gauges,  sensitive components.


It’s known as water hammer, and it occurs when a valve abruptly closes  Water hammer strikes as a sudden pressure pulse that is in addition to the working pressure in a system. This pulse of additional pressure can be enough to damage every pressure gauge or  valve. It can even burst lines or end connections if the pulse is too great. Yet operators often don’t realize what caused the damage. They know the maximum process pressure


12 IMT June/July 2014


won’t exceed the system’s design. So they have trouble understanding where the extra pressure originates. Let’s take a closer look at why the phenomenon of water hammer occurs and how to estimate its  addition, we’ll review a few methods for mitigating the water hammer   shutting it down, and using pressure snubbers to protect gauges.


 please contact Dean Slejko, Product Manager, Analytical Products, Swagelok Company dean.slejko@swagelok.com


With the new milling machine HS-F 3000, Herzog  time, launching an automatic sample processing machine which automatically deburs the samples after milling. Another new feature is the tool changing system, which  when it comes to processing  The machine makes a major contribution to cost cutting in the sample lab, as processing times are short, and operation is fully automatic throughout the entire processing cycle. The HS-F 3000 3-axis milling machine comes with an entirely new design for use in automated laboratories. A key feature of the machine is the automatic deburring of the samples after milling. With process sequences optimized, the machine can mill one sample in just about 30 seconds. It is therefore able to achieve throughput rates of up to 800 samples per day. The machine has been designed to handle a wide and varied range of samples of materials occurring in the steel industry, from soft metals through to the hardest pig iron. The extremely sturdy spindle, which is supported in  the hardest of materials can be processed with high precision and reproducibility. The HS-F 3000 machine can process oval, square, round and double thickness samples. The entire process cycle from feeding of the sample - by a robot or a human operator – via milling and deburring through to the removal of the samples takes place automatically. Milling


www.internationalmetaltube.com


chips are collected in a container and may be used for spectral analysis. The automatic tool changing system, which has a   sample processing. The control system selects the optimal milling  of each sample and places it into the spindle. Thus, the machine operates autonomously without any human intervention over long periods of time, even if samples  processed.


The integrated Simatic S7 PLC controller guarantees error-free processing of the most varied of samples. Up to 18 parameter-  Consequently, the samples are always milled with optimal cutting speeds and material removal rates. The control system also monitors the service times of the individual tools, indicating necessary tool changes and other due maintenance work on the touch panel. When designing the HS-F 3000 sample milling machine, Herzog placed particular emphasis on the versatility of possible mechanical  of software interfaces. Thus, the machine seamlessly integrates into Herzog’s robot-based and linear automation systems. Like all other Herzog machines, the HS-F 3000 is extremely sturdy, guaranteeing high milling quality and contributing to the return on investment. The HS-F 3000 is hermetically sealed and noise insulated.


More information on Herzog Maschinenfabrik GmbH & Co KG t: +49.541.9332-0


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