| 摘要 |
At least one nozzle hole bore (61) leads from the longitudinal bore (3). In the longitudinal bore is a needle seat (5) which works in conjunction with the nozzle needle (4). A one-piece basic body (2) is provided, which incorporates at least the longitudinal bore, the needle seat and the nozzle head and is made of a hardenable material, particularly a tempered steel. The basic body is produced in the unhardened state in the required outer end shape and then hardened. The nozzle head (6) of the basic body has a coating (7) of hot corrosion-resistant alloy, which is applied before hardening the basic body. The nozzle hole bore is produced after application of the coating and before the basic body is hardened. |
