ADI (Austempered Ductile Iron)
The excellent properties of ADI are achieved by heat treating alloyed ductile iron according a special heat treatment program.
An automated moulding line.
Ferrous metal containing 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.
Made of sand, forms the interior shapes of the casting (cold-box and shell-core).
Quality parameter describing 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
(GJL) = cast iron in which the graphite exists in the form of flakes. The fractured surface appears grey.
Aims at converting material properties, 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 where melting takes place. Source of energy can be electricity (= electric furnace) or coke (= cupola furnace). In the electric furnace melting takes place in a single charge (the furnace is emptied completely or partially once a batch is ready). For example, it takes about 1 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.
A stage where a mould is formed into the moulding sand by means of a casting pattern. One half of the cast pattern is placed in the moulding box and around it the moulding sand is stacked 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 (e.g. 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 has higher yield strength and elongation than ferritic to pearlitic ductile irons.
Method which aims to improve the surface quality of materials, e.g. TiN-coating (wear-resistant).