Questions frequently posed to K-Metall

What is a convector?

A heater which transmits heat via convection (= vertical airflow) to the surrounding air,’ is referred to as a convection heater. The convector thereby ensures that there is air circulation in the room. It warms up cool surrounding air which enters the heater from below. The air warmed by the convector is fed back upwards into the room and rises owing to its density. This results in the cold surrounding air, which is heavier than the warm air, dropping downwards. It then again enters the convector from below in order to be transformed into warm air.

What are floor duct convectors and what advantages do they offer?

Floor duct convectors consist of a ready-to-install duct with a convector. As they are fitted in the floor and equipped with a grille, they require extremely little space. Moreover, they can be perfectly integrated into the environment and are hardly visible, completely unlike standing heaters. Thus, a variety of possible applications presents itself for floor duct convectors.

What is nibbling?

Just like punching, nibbling is also a procedure for punching and machining workpieces made of sheet metal, with the help of which complex shapes can be cut out. Nibbling is a cold process without any influence of heat, in which neither dust nor gas or smoke is generated. In addition, the procedure offers a high cutting speed as well as low feed force, which does not depend on the thickness of the metal sheet.

What is the difference between spot and stud welding?

Spot welding is the abbreviated form of resistance spot welding and helps to join steel sheets with each other on the one hand. On the other hand, materials which normally cannot be welded with each other can be joined during spot welding. Using this technology, a large amount of energy is brought to a small point on the workpiece via an electric current so that high pressure is generated, which results in a permanent joint. Large sheet metals can be machined in multiple spot-weld stations.

Stud welding (arc stud welding), on the contrary, deals with joining stud-shaped elements, such as loops or pins, with larger components. An arc is ignited between both the workpieces, which fuses both parts so that they can be merged by applying slight pressure.

Why are ventilation grilles good?

Through consistent ventilation, ventilation grilles ensure air exchange in the room and thus help air circulation. They constantly supply fresh air to the rooms and discharge the absorbed air as well as the pollutants and liquids it contains into the open. As the moist air leaves the room, the risk of mould formation reduces greatly. Therefore, installing the ventilation grilles is not only beneficial for your health, but also ensures that the building fabric is not affected.

What is the meaning of CNC?

CNC, Computerized Numerical Control, refers to the computer-assisted numerical control of machine tools. The machines are thus no longer controlled manually, but using electronic methods.

K-Metall is certified in accordance with the “railway standard”. What does this mean?

Railway standard is another term for certification in accordance with DIN EN 15085-2. This certification of the Federal Railway Authority proves that K-Metall fulfils the technical and staff requirements to carry out welding work on rail vehicles and vehicle parts. The field of application in this case is during the new construction of rail vehicles, for instance, when manufacturing different brackets and suspensions as well as when manufacturing housings.


K-Metall GmbH
Am Johannisberg 2
D-08606 Oelsnitz / Vogtland


Telephone:   +49 37421 4040
Fax: +49 37421 40421
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