| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable correction of axial direction dimension of a magnetic cylindrical body and correction of eccentricity of a valve seat member in relation to the magnetic cylindrical body by relatively small laser radiation energy in a manufacturing process of an electromagnetic fuel injection valve. <P>SOLUTION: An annular welding part W is formed between the valve seat member 3 and the magnetic cylindrical body 4 mutually fitted to close a valve housing 2 storing a valve assembly V. After that laser is irradiated on an outer circumference surface of the magnetic cylindrical body 4 over whole circumferences to form annular fake weld part w1, w2 in which weld penetration does not reach an inner circumference surface of the magnetic cylindrical body 4. Consequently, correction of axial direction dimension of the magnetic cylindrical body 4 and correction of eccentricity of the valve seat member 3 in relation to the magnetic cylindrical body 4 are performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
