Patent ID: 7793867

Claim:
A method of manufacturing a nozzle body, which comprises a first nozzle-body part and a second nozzle-body part, wherein the first nozzle-body part is formed from a hardenable material having a hardening temperature, and wherein in the first nozzle-body part a first nozzle-needle recess for receiving a nozzle needle and a first guide region for the nozzle needle are formed, the method comprising the steps of: assembling the first nozzle-body part with the second nozzle-body part, wherein an assembly region is developed between the second nozzle-body part and the first nozzle-body part, the assembly region including an interference fit between respective first portions of the first and second nozzle-body parts and a gap between respective second portions of the first and second nozzle-body parts, the gap extending from the interference fit to an opening, the gap being sized to promote capillary action of a melted brazing solder into the gap, feeding brazing solder having a working temperature in the region of the hardening temperature of the first nozzle-body part to the assembly region, and subjecting the assembled first nozzle-body part and second nozzle-body part to a hardening operation, during which the hardening temperature of the first nozzle-body part is reached, wherein during the hardening operation the brazing solder melts and flows into the gap due to capillary action, such that the first and second nozzle-body parts are joined by a dual-type connection including (a) the interference fit between the respective first portions of the first and second nozzle-body parts and (b) the brazed connection across the gap between the respective second portions of the first and second nozzle-body parts.