#testingtuesday

.

#testingtuesday HTP 40

HTP 40

After using the HSM 100 mill in the previous video, we can now use the sample for pressing in the HTP 40. The pulverized material is carefully being loaded into the steel ring. Please note that the equipment should be cleaned off any excess powder as you can see in the added picture. After closing the HTP 40 with the swing-out cross-head, a number of pressing variables can be selected, depending on the material prepared and the press tool employed. The pelletizing process of the press is controlled by the PLC program. Pelletizing parameters such as total pressing force, ramp up and decrease of pressure as well as pressure holding time can be preset on the HMI panel. This results in the production of a perfect pellet even with complicated sample materials.

#testingtuesday HSM 100

HSM 100

For manual or semi-automatic sample preparation, the HSM-100 disc mill can operate with different types and sizes of grinding vessels to enable preparation of all kinds of material. After loading the machine with pre-crushed material, grinding aid pills are added in order to reduce agglomeration rate and increase stability of the pressed pellet. Please note that usually only 4 to 8 pills are used to obtain a stable pellet. After loading the mill with the grinding vessel, a pre-defined program can be started by quickstart buttons. The ground material often has a maximum grain size less than 45 µm to reduce interference with XRF spectrometers. After using the HSM-100 mill, the sample is ready for pressing in e.g. an HTP-40 semi-automatic press.

HERZOG HP-MP

Next Generation of the HP-MP

Powder Preparation - Quick and repearable pressed pellets in the new HP-MP

For quick and repeatable sample preparation of powdered materials, the new HP-MP is perfectly suited. The mill- and press combination automatically pre-doses the material, grinds and presses it. Within only a very few minutes, the pressed pellet is ready for e.g. XRF analysis.

#testingtuesday Protection Wall

Bead One HF

Part 3: Automatic protection wall

In order to fuse so called platinum poisons, the preparation of the crucible with a protection wall is essential. Platinum poisons might cause devastating damage to platinum ware which can be avoided by the right preparation routine. The protection layer is formed with Lithiumtetraborate and covers the interior walls of the crucible, thus enabling pre-oxidation of materials that would otherwise react with the platinum. Furthermore, the automatic formation of a protection wall eliminates risks to the operator as no hot pieces have to be handled.

#testingtuesday Casting

Bead One HF

Part 2: Controlled Casting

After dissolving the sample material in the flux, the homogeneous liquid must be poured into a dish. The automatic casting mechanism of the Bead One HF ensures the emptying of the crucible in a controlled manner. The casting duration can be adjusted allowing even the last drop to be cast into the dish.

#testingtuesday Borate fusion

Bead One HF

Part 1: Borate Fusion

In the first stage of fusion, the flux melts and the cement sample is being dissolved. The high temperatures liberate carbon dioxide from the cement, which might form bubbles during the dissolution process. During the mixing step the melt is homogenized. This prevents formation of saturation layers around solids, thus the dissolution rate is kept high.