Light metal casting

Type of inspection:

Pore analy­sis of a cylin­der head

 

Chal­lenge:

In order to achieve the high­est pos­si­ble ranges as well as low emis­sions, light­weight con­struc­tion con­tin­ues to be a pri­ma­ry goal in vehi­cle con­struc­tion, regard­less of the type of dri­ve. Light met­al cast­ing is char­ac­terised by its abil­i­ty to pro­duce com­plex parts with a high degree of automa­tion and recy­cla­bil­i­ty. How­ev­er, high tech­no­log­i­cal demands are placed on the com­po­nents, includ­ing mechan­i­cal load-bear­ing capac­i­ty under more com­plex stress­es and simul­ta­ne­ous mass reduction.

 

Poten­tial consequences:

A cylin­der with poor qual­i­ty leads to dam­age to the cool­ing sys­tem and ulti­mate­ly to engine failure. 

 

Advan­tages of a CT inspection:

  • Visu­al­i­sa­tion of pores in the cylin­der head and colour clas­si­fi­ca­tion of the pores accord­ing to their vol­ume is possible.
  •  The exact posi­tion of each pore and thus the poten­tial risk it pos­es can be determined.

 

 

Date:

14. December 2021

Category:

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Possible consequences:
Due to ambiguity in the quality of joints, high
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Pore analysis of a cylinder head

Challenge:

In order to achieve the highest possible ranges as well as low emissions, lightweight construction continues to be a primary goal in vehicle construction, regardless of the type of drive. Light metal casting is characterised by its ability to produce complex parts with a high degree of automation and recyclability. However, high technological demands are placed on the components, including mechanical load-bearing capacity under more complex stresses and simultaneous mass reduction.

Potential consequences:

A cylinder with poor quality leads to damage to the cooling system and ultimately to engine failure.

 

Advantages of a CT inspection:

  • Visualisation of pores in the cylinder head and colour classification of the pores according to their volume is possible.
  •  The exact position of each pore and thus the potential risk it poses can be determined.
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The exhaust manifold is one of the most heavily loaded components of an engine. For this reason, the actual and desired condition of the wall thickness should be compared. Only with a sufficient wall thickness can the manifold withstand the shock-like inflow of exhaust gases and the resulting pressure front, as well as the many heating and cooling cycles in the long term.  

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A CT scan of XXX XXX