Technological processes
Start from what happens inside the furnace, not from the name of a device. Below are the technological processes run by our customers, with the equipment that supervises them.
Processes
Every process is described from the measurement and control side: what has to be measured, what decides the repeatability of a load and which instruments handle it. Catalogue equipment is assigned to processes, so from every block you go straight to the list of instruments.
Carbon potential control based on the signal from an oxygen probe, verification of the atmosphere with a three-gas analyser and supervision of the endothermic gas generator. Simulation makes it possible to set the boost and diffusion times before the load is started.
Equipment for this processDecarburising control calls for reliable measurement in the lower carbon potential range and for a stable atmosphere dew point. The same measuring chain handles decarburising carried out on purpose as well as supervision of unwanted decarburisation in the surface layer.
Equipment for this processCarburising carried out with an addition of ammonia, at a lower temperature and over a shorter time. Control covers the carbon potential and the ammonia dosing at the same time, so what counts is repeatable flows, not a setting read off a rotameter.
Equipment for this processControl is based on hydrogen measurement, from which the nitriding potential is calculated. Probes working at lower temperatures also handle pre-oxidation and final oxidation, and gas flows are run from recipes.
Equipment for this processA low temperature process with an addition of a carbon bearing gas, sensitive to the proportions of the atmosphere components. Recipe based control and a continuous record of the cycle decide the repeatability of the compound layer across successive loads.
Equipment for this processTemperature stability in the chamber and a reliable record of the load are decisive. A data logger with write protection produces a document that stands up in an audit, and a temperature uniformity survey confirms that the working zone is uniform.
Equipment for this processLong cycles and large loads call for supervision of the temperature distribution and of the composition of the protective atmosphere. Continuous recording together with alarms reduces the risk of having to run the load again.
Equipment for this processThe process is sensitive to moisture and residual oxygen. Dew point measurement in the low range and stable running of the temperature cycle decide the quality of the joint and the repeatability of the batch.
Equipment for this processA mixed atmosphere calls for repeatable gas proportions and humidity control. Electronic flow measurement removes the differences between operating shifts, and a dew point analyser keeps the atmosphere dry in the high temperature zone.
Equipment for this processDebinding and sintering of injection moulded parts are carried out within a narrow process window. Dew point control and repeatable gas flow decide the density and the dimensions of the part after sintering.
Equipment for this processRunning the cycle covers pressure, temperature and gas quenching. A programmable controller reproduces the recipe load after load, and recording covers every parameter required in the process documentation.
Equipment for this processOxygen measurement in the flue gas of boilers, glass furnaces and process burners. Setting the excess air lowers fuel consumption and stabilises the temperature in the chamber, and continuous measurement makes it possible to react to a change in fuel quality.
Equipment for this processRunning a process that is not listed here, or combining several in one furnace? Describe the furnace, its working temperature and atmosphere, and we will point out the measuring chain and the control system.
Describe your processApplications
Start from the process, from the standard you are audited against, or from your industry. Every route leads to the same equipment, described in the language you use on your own shop floor.
Equipment selected according to the process run in the furnace.
You are on this pageEquipment that meets audit requirements.
Go to9 industriesWhere our control systems are at work.
Go toEquipment selection
Describe the furnace, its working temperature and atmosphere, and we will propose a configuration together with the reasoning behind it. No obligation and no need to define a budget in advance.
