ADI (Austempered Ductile Iron)
The excellent properties of ADI are achieved by heat treating alloyed ductile iron according a special heat treatment program.
A moulding system controlled by machine. An automatic moulding line operates without the intervention of the operator apart from when problems occur.
Ferrous metal that contains 2.0 – 4.2% carbon. The carbon is usually in the form of graphite. Ferrous metals are divided into grey cast iron (GJL), nodular cast iron (GJS) and white cast irons.
Computer Numerical Controlled machine
Sand part which forms interior shapes of the casting (cold-box and shell-core).
Quality parameter which describes the accuracy of the dimensions of a part compared to the drawing or CAD file.
After casting the remaining runners and feeders are removed by fettling.
Grey cast iron
Grey iron, GJL, a cast iron in which the graphite exists in the form of flakes. The fractured surface appears grey.
Heat treatment aims at converting material properties. It consists of heating and usually controlled cooling.
Chipping machine tool (for rotating symmetrical materials).
General name for various machine tool methods, such as drilling, milling, lathing and grinding.
The furnace in which melting takes place. Source of energy is electricity (= electric furnace) or coke (= cupola furnace). In the electric furnace melting takes place in a single charge, meaning that the furnace is emptied completely or partially once a batch is ready. For example, it takes about one hour 20 minutes to melt 8 tonnes at a power of 4.3 MWh.
Mould formed from moulding sand for casting a product. The mould contains a hollow area that is the shape of the product, the runners needed to direct the molten metal and feeders to compensate for the shrinking of the molten metal.
Stage, where by means of a casting pattern, a mould is formed into the moulding sand. A half of the cast pattern is placed in the moulding box and around it will be stacked the moulding sand, by hand (hand moulding) or by machine (automatic moulding). The cores for making hollow interiors inside the castings are also placed in the moulds in the moulding stage.
Nodular cast iron
GJS, cast iron which contains 3.0 - 3.9% carbon and in which the free graphite exists in nodular form, also called ductile iron.
Primer and powder coating
Priming/finishing. Protects material from corrosion and improves surface appearance.
Left-over raw material from the manufacturing process, such as plate cutting waste, and end-of-life iron, aluminium, and steel products.
Machining phase where material is chipped as effectively as possible without aiming at high accuracy or surface quality.
SSF Ductile iron
Silicon Solution Strengthened Ferritic Ductile iron possess higher yield strength and elongation than ferritic to pearlitic ductile irons.
Method which aims to improve the surface quality of materials for example TiN-coating (wear-resistant).