Metal Shrinking

MCL offer a 24 hour Metal Shrinking service. Our technicians will
shrink components to be fitted by our customer using liquid
nitrogen immersion.

Benefits

  • Fast and predictable. May take only minutes

  • Can provide a precision fit

  • Components reach ambient temperature more quickly than
    if heated

  • Will not cause damage to most ferrous and non ferrous metals

  • No metal discolouration as may be produced by heating

  • Heating is slow, may take hours, and may cause distortion
    and damage

  • Metal Shrinking may eliminate the need for machined keyways

  • Shrinking may be used to dismantle assemblies

  • No discolouration of the metal

Cooling from ambient to -196ºC.

 

Liquid nitrogen Metal Shrinking can accommodate the majority of interferences found in engineering assemblies.

 

*Thousands of an inch per inch or microns per mm diameter.

Metal Shrinkage Table

Metal

 

Aluminium

 

Brass

 

Steel

 

Cast Iron

 

Copper

 

Magnesium

 

Nickel

 

Zinc

Maximum Shrinkage*

3.8

3.4

1.9

1.8

3.0

4.5

2.1

5.4