Precauzioni da prendere

HANDLING

  • Many customers do not know how to deal with a shield in their hands. Should it be handled like an egg or like common sheet metal ...
        
  • A shield is a fragile part, especially when the thickness is low. Indeed, after the heat treatment, the mechanical strength is reduced and any mechanical stress (shock, deformation) alters its shielding effect.
       
  • If you manipulate the part normally, as you would do with an electronic device, there is no particular risk.
      
  • in the event the shield falls, the gravity of the situation must be assessed and the possibility of a thermal reprocessing considered.
        
  • It is strongly recommended to use gloves to avoid the risk of oxidation of the material over time.

 

TYPICAL PLACES WHERE SHIELDING ARE USED

  • For conventional shielding, we must pay attention to have:
             - Users having  'normal' handling (no aggressive gests)
             - Workplaces where parts are protected
             - Environments containing little humidity
             - Gloves when handling parts.
         
  • Care should be taken that there are no magnets nearby.
         
  • For high-end shieldings (thin, heat treated with high-temperature), they must be placed in laboratory conditions.

 

   

OXIDATION AND PLASTIC DEFORMATION

  • Once the heat treatment is done, the material is free of oxidation or impurities, and the crystal structure is in place. The magnetic field lines can move like a car on a wide, straight highway where the asphalt is brand new.
         
  • The screen will then be sensitive to two things:
             - Oxidation which may be caused by the environment but also by fingerprints (this is putting rocks on the highway)
             - Bumps and folds that will destroy the crystal structure and thus stifle field lines (this is causing delays on the motorway).
         
  • A shielding that is too oxidized or has undergone shocks requires another heat treatment.