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Ingegneria / Elettronica

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Rivista dell'azienda "il campione" (9)

No. 37
NEW DIMENSIONS in sample preparation and particle analysis

No. 36
L'arte della macinazione - Tecnologie di macinazione contemporanee
No. 34
NUOVI PRODOTTI '09
No. 33
PREPARAZIONE DI CAMPIONI NELLA PRASSI & NUOVI RETSCH INSTRUMENTI
No. 32
PREPARAZIONE DI CAMPIONI per l’analisi strumentale
No. 30
Mills and Particle Analyzers for Environmental Analysis
No. 29
New Product Generation 2007
No. 28
Think big but grind fine!
No. 26
CAMSIZER - Optical Particle Size and Shape Analysis

Reports applicativi (17)

Representative Analysis Results Require Adequate Sample Preparation
A faultless and comparable analysis is closely linked to an accurate sample handling. Only a sample representative of the initial material can provide meaningful analysis results. Rotating dividers and rotary tube dividers are an important means to ensure the representativeness of a sample and thus the reproducibility of the analysis. Correct sample handling consequently minimizes the probability of a production stop due to incorrect analysis results. Thus correct sample handling is the key to effective quality control.
Scrap turned into raw materials: End-of-life vehicles re-used
The EU directive 2000/53/EG stipulates that as of 2015 95 % of the weight of a car that has reached the end of its life span have to be recycled. The work of ARN is strongly focused on this objective. Together with partner companies they make sure that old cars are processed in an environmentally compliant way. The recycling chain begins with the companies that dismantle the car and remove raw materials and liquids. Waste management companies collect these materials and deliver them to the processing companies who reuse the materials in accordance with high production standards.
CryoMill - Cryogenic grinding was never more convenient or efficient
Some sample materials have properties which make size reduction at ambient temperature impossible. If, for example, very elastic materials need to be ground or volatile components have to be preserved for further analysis, it is essential to carry out cryogenic grinding. The use of liquid nitrogen helps to embrittle the sample, thus improving its breaking properties, and preventing volatile substances from escaping due to the frictional heat produced by the grinding process.
Representative results require adequate sample preparation
The following situation is typical for many production plants: After a routine quality check, the production process is stopped or an already produced batch is suspended, because the analysis results were not within the relevant critical values. But does the tested product really deviate from the specifications? The quality control managers are convinced of this because modern analysis instruments provide results with very low tolerances. The sample in question was tested several times and the result was confirmed. The question is why the product does not match the specifications although the production parameters have not been changed in any way.
The possibility that the tested product is indeed deficient cannot be excluded. However, it is often not the product itself which causes irregular analysis results but a lack of understanding of the steps which come before the analysis.
Powerful Cutting Mill
The SM 300 excels especially in the tough jobs where other cutting mills fail. It has a freely selectable speed range from 700 to 3,000 rpm with high torque. The mill is convenient to operate and easy to clean. Reliable and extremely efficient sample preparation in the laboratory is now guaranteed with the SM 300.
Efficient Grinding at –196 °C
RETSCH’s New CryoMill for Safe and Reproducible Grinding with Liquid Nitrogen
Sick with Dolls
Traces of Heavy Metals in Toys
Tracking down hazardous substances (RoHS/WEEE)
Preparing electronic waste for obtaining representative analytical samples.
A solution for converting an electrical appliance into a meaningful analytical sample is described using a remote-controlled toy car as an example.
Size reduction within the context of sample preparation
In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.
Sample Preparation of Electronic Scrap in the Context of RoHS and WEEE
Since August 2004 new EU directives for the disposal of used electrical and electronic appliances as well as the restricted use of certain hazardous substances in these devices have become effective.
Sample preparation of electronic scrap with SM 2000 and ZM 200
RETSCH mills in the context of RoHS and WEEE
Höchstleistung im Doppelpack
Mit der PM 100 und der PM 200 präsentiert Retsch eine neue Generation von Planeten-Kugelmühlen mit einer bzw. zwei Mahlstellen, die in diesem Produktsegment neue Leistungsstandards setzen.
Thermoelektrische Wandler - Eine Technologie aus der Raumfahrt
Mechanisches Legieren von thermoeletrischen Materialien für die Raumfahrt, entwickelt vom Institut für Werkstoff-Forschung in Köln, Arbeitsgruppe "Thermoelektrische Materialien".
Molienda ultrarrápida y ultrafina
El nuevo molino ultracentrífugo ZM 200 de RETSCH es un molino de rotor no sólo extremadamente rápido y cuidadoso con el material molido, sino también de uso universal gracias a su amplia gama de accesorios.
Silicio per l’energia solare
I semiconduttori sono utilizzati per una grande varietà di applicazioni elettroniche, come circuiti integrati (microprocessori, microcontrollori, ecc.) rilevatori ottici e sorgenti di radiazioni (es. emettitori di luce), ma in modo particolare per i fotovoltaici, tramite i quali l’energia solare viene trasformata in potenza elettrica. Per la maggior parte delle applicazioni, il silicio è il materiale semiconduttore scelto.
Mulino a taglienti SM 300 – Affinamento di un sistema di macinazione ben affermato
I mulini a taglienti vengono utilizzati in diverse aree della preparazione dl campione alle analisi successive. Tipiche applicazioni includono la riduzione di combustibili da rifiuto, la macinazione di campioni di biomasse per ricerche nell’ambito delle energie rinnovabili, il controllo dei prodotti nell’abito delle normative RoHS and WEEE, o nel recupero dei materiali preziosi – la varietà di campione è notevole.

Referenze (1)

Test Reports (23)