OIL RESISTANCE TEST METHOD AND OIL RESISTANCE TEST APPARATUS

摘要

An oil resistance test method for an electronic device is provided. At least one type of resin material is provided on at least a portion of an outer surface of the electronic device (100). The oil resistance test method includes: setting a test temperature; and immersing the electronic device (100) in a water-soluble cutting oil (15) in an atmosphere of the set test temperature. This cutting oil (15) contains a mineral oil and a surfactant, and exhibits a milky-white appearance when diluted with water. The oil resistance test method further includes: determining, based on an electrical characteristic of the electronic device (100), whether or not the electronic device (100) has been degraded by the cutting oil (15); and estimating, based on a total immersion time of the electronic device (100) in the cutting oil (15) until degradation of the electronic device (100) is detected, a life of oil resistance of the electronic device (100).