1. Start the heating furnace: 1. Preparatory work before ignitionDifferences in vacuum heat treatment between aerospace blanks and parts (1) Wear labor protection supplies, and bring cotton yarn and adjustable wrench for backup.Step shaft vacuum quenching heat treatment (2) Check the connection points of each part of the gas supply pipeline to ensure that the screws of each part are fully tightened, each gate switch is agile, and the gas supply valve should be in an open state. High speed steel vacuum heat treatment (3) The level gauge should be clean, complete and clear. (4) The safety valve must be intact and sensitive within the validity period, and the set pressure is 0.1MPa. (5) Check the pressure gauge to ensure that the display is sensitive and accurate within the validity period.
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