Method for manufacturing high pressure component of e.g. high pressure pump of fuel injection system for combustion engine used in motor vehicle, involves applying fluid with predetermined pressure in recess at preset time

摘要

The method involves forming a recess (12) in a high pressure component (10). The recess is provided with a wall surface (14). A region of the wall surface is made of austenite material. The fluid with predetermined pressure is applied in the recess at a predetermined time such that a portion (16) of the austenite material region of the wall surface is converted into martensite portion (18). A wall surface portion is made of cast iron. An independent claim is included for a device for manufacturing high pressure component of high pressure device.