TEMPERATURE MEASUREMENT

Deep Drawing Processes

Process Control

• For stable process control when deep drawing, the die and sheet metal temperatures need to be measured permanently.

Process temperature

• 200 °C to 350 °C

Drop Forging Processes

Workpiece Control in Drop Forging

Monitoring of Surface Temperature

• In die forging the semi-finished products need to reach a particular forging temperature before forming. To get the best possible production results the surface temperature of the material is monitored accordingly. The same goes for the forging after forming or before storing.

Process temperature

• 700 °C to 1,250 °C

Ensuring the Monitoring of Materials

Precision is Key

• The manufacturing of metal products is almost exclusively automated because of the high process temperatures. Here, the precise assessment of the workpieces out of the mold is very important for the monitoring of the materials or reject control.

Process temperature

• 150 °C to 900 °C

Induction Hardening

Efficient Induction Hardening

Task

• In (partial) induction hardening an area is brought to a required hardness temperature and subsequently quenched. For this process it is extremely important to adhere to an optimum time/temperature profile in order to achieve the desired structural composition of the metal.

Process temperature

• 700 °C to 1,100 °C

Induction Welding Processes

Perfect Process Temperature

• In the manufacturing of induction welded joints, in pipes for example, the quality needs to be assured. For this purpose the temperature of the rims is recorded after the inductor and before the squeeze rollers, with the process controlled in this manner.

Process temperature

• 950 °C to 1,450 °C

Optimization of the Galvanization Process

Optimized Electrochemical Reactions

• Products are often coated with metals, for example with copper and nickel, to increase their strength. The objects to be coated are brought to the desired temperature in front of the galvanizing bath to optimize the electrochemical reaction.

Process temperature

• 150 °C

Preventing Aborted Pours Continuous Casting Plants

Avoiding Errors at the Point of Origin

• Thanks to improved efficiency the demands on continuous casting lines are also increasing. This necessitates extensive process monitoring measures, especially where temperature measurement is concerned: the technology has become cheaper with increased levels of precision. For the operators the investment is worthwhile, as costly aborted pours can be avoided at the point of origin.

Process temperature

• 800 °C to 1,000 °C

Rolling Mill

Process Optimization on the Rolling Train

Continuous Measurement of Forming Temperature

• At a rolling mill, a continuous measurement of forming temperature between individual rolls leads to an optimzed process control and quality assurance. As a rolling mill consists of various stations, we recommend two devices: A fast pyrometer for sheet temperature measurement and a ratio pyrometer for the cooling chamber and wire temperature measurement.

Cooling

• In the manufacturing of semi-finished products the slabs are cooled from around 1,250 °C in racks. For quality assurance and process optimization the forming temperature is measured between the individual rollers.

Process temperature

• 700 °C to 1,100 °C

Slag Detection

Measuring the Percentage of Slag

• In the manufacturing of metals, slag – a non-metallic smelting residue – is a by-product of various processes. To increase the quality of the end product the amount of slag needs to be kept as low as possible.
• The optris PIX Connect software provides the option of measuring the percentage of slag in the material with the infrared cameras so that residues can be skimmed off where necessary. Here, a camera with 7.9 μm spectral sensitivity is used.

Process temperature

• 1,250 °C to 1,500 °C

Temperature Monitoring in the Casting Process

Temperature Measuring of Liquids

• In the casting manufacturing process, liquid materials are poured into a mold, and this becomes a solid body after it sets. At the moment of casting the temperature of the material is measured in order to influence the cooling phase which is decisive for quality.

Process temperature

• 1,250 °C to 1,600 °C

Vessels Safety

Avoiding Breaches

• Steel needs to be transported in various vessels including torpedo wagons, slag ladle cars and smelting ladles. Even if the wagons and ladles are equipped with fireproof materials, breaches may result due to the 1500 °C hot steel. This presents a danger to both the stock and personnel which could result in millions of euro in damages.
• To prevent any such breaches the vessels are monitored with thermal imaging cameras and protected via recognition of temperature differences.

Process temperature

• 300 °C to 600 °C