| 摘要 |
PURPOSE: A process for manufacturing an injector tube for a diesel engine is provided to secure airtightness when the injector tube is coupled to an injector by adding an annealing heat treatment to the manufacturing processes of the injector tube and reducing hardness. CONSTITUTION: A manufacturing process of an injector tube comprises the steps of a drawing process(10), a molding process(20), and an after-treatment process(30). An annealing heat treatment(21) is added to the molding process(20), and reduces the hardness of the injector tube and improves the airtightness.
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