PROCESS FOR MANUFACTURING CASING, AND VACUUM PUMP

摘要

PROBLEM TO BE SOLVED: To prevent the deterioration in durability of a vacuum pump by suppressing the damage of a rotor and a side plate with a simple constitution.

SOLUTION: A process for manufacturing a casing includes: a step of placing a cylinder liner that constitutes a cylinder chamber in a mold, casting using a molten metal for forming a casing body, and casting a cylinder liner in an integrated manner (step S2); and a step of penetrating the cylinder liner and the casing body in an integrated manner to process an air intake hole and an air exhaust hole both of which are communicated with the inside of the cylinder chamber (step S3).

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