Method for manufacturing magnetic disk unit

摘要

To provide a method for manufacturing a magnetic disk unit, the method permitting easy and efficient introduction of a low-density gas into the enclosure. The enclosure 10 of the magnetic disk unit has the gas inlet 11i and the gas outlet 11e, each of which is provided with a filter. When the enclosure 10 is filled with helium, the mass flow rate of helium being supplied to the gas inlet 11i is detected and the mass flow rate of helium being supplied to the gas inlet 11i is controlled according to the thus detected mass flow rate of helium.