Patent ID: 8097825
Filing Date: 2012-01-17
Classification: B23K,F01L

Abstract:
1. A laser-clad processing apparatus for laser-clad processing a valve-seat portion of a cylinder head, comprising: a cylinder-head holding device holding the cylinder head in an inclined orientation so that a central axial line of the valve seat portion defines a generally vertical line; a laser-processing head irradiating a laser beam onto a process part of the valve seat portion, while discharging a powdery material to the process part; and a rotator rotating the laser-processing head around the central axial line of the valve seat portion such that said laser-processing head is inclined with respect to the generally vertical line, wherein the laser-processing head includes a coaxial nozzle comprising a supply of powdery material, four powdery material-introductory portions spaced from each other at 90° intervals in a circumferential direction, a swirling chamber, and a rectifier rectifying a flow path of the powdery material, configured to direct the powdery material in a direction substantially parallel to the central axial line in an equal amount across the process part of the valve seat portion.