Technical Service Kuehn GmbH

The closed double-chamber cup is suitable for the sampling of molten metals with a maximum pouring temperature of 1420°C (light metals, copper-based alloys, GJS, GJV). The two chambers allow for a differentiated thermal analysis during the solidification process. The constant sample volume and the reproducible heat transfer enables high-precision measurement. The inorganic gas-permeable binder does not form any reaction products that may influence the measurement and remains stable, even at long measurements (eutectoid). With light metals, the thermocouple is sensitive even for slight heat changes.

The Single-Chamber Cup is a widely used sensor for the determination of carbon and silicon by means of thermal analysis at cast iron. It is suitable for the sampling of molten metals with a maximum pouring temperature of 1420°C until eutectic solidification occurs.

Through selective doting of the chamber with tellurium a metastable solidification can be effected. The tellurium fixation was optimized concerning the gas formation to improve not only work safety but also the repeatability of the measuring results.

The robust thermocouple can also be used with cast irons and higher cooling stress. The electrical contact is realized through a standard contact piece.  The sensor is compatible with all common TA-measuring devices with thermocouple input Type: K

The Open Single-Chamber Cup for standard contact pieces with reduced volume, cylindrical sample shape and cold-box bound core sand as an alternative to the Slow-Cup. Through the improved tellurium fixation, the boiling reaction is reduced so that a smaller sample chamber yields the same results like traditional open cups.