Eddy current, coating, grinding, chip removal; and cleaning processes are used to produce modern engines and gearboxes. Residual magnetism often occurs as a hidden enemy and saboteur in these process chains. Insufficient demagnetisation can cause the entire part to re-magnetise in a short time.
We offer our customers in this application area tailor-made devices and many years of experience for the optimum solution to demagnetise the parts.
The demagnetisation systems can be used both manually and automatically. Our internal engineering team also develops special solutions for special applications.
Con rods, piston rings, camshafts, crankshafts and balance shafts
Particle adhesion after cracking con rods can cause serious assembly faults on the crankshafts due to very large particles becoming jammed when joining the crankshaft assembly. Exposed particles can scratch the crankshaft bearing surfaces and cause the engine to fail completely, because particles can no longer be incorporated into the lead-free bearing shells for example.
Eddy current testing
A demagnetisation process that is as regular and as deep as possible is indicated as the preparation process for eddy current testing, in order to prevent incorrect measurements and therefore unjustified rejects.
Gear box parts, torque converter, gear lever, bearings
Particle adhesion also causes assembly faults and bearing damage here.
In torque converters, special attention must be paid to the magnetised inner workings. Balancing weights applied to the assembled torque converters using spot welding cause all interior bearings and impellers to be fully magnetised.
Even the finest particles can cause the injection openings to wear in fuel injection systems for engines running on diesel, petrol and natural gas. Very good demagnetisation of the components enables all parts to be cleaned very thoroughly using ultra-fine cleaning.
Structural changes due to forming are particularly pronounced for springs. This also applies to stainless steel springs. The magnetism can no longer be reversed by an annealing process, as this would change the properties of the springs and they would lose the required properties.
This applies to spring clips, spring clamps, flat springs, moulded springs, spiral springs, leaf springs, plate springs, etc. from less than one millimetre to several metres.
Demagnetisation is very possible here, even in bulk materials.