Device and method for protecting the rock drilling machine from corrosion

摘要

The present invention relates to an arrangement intended to be part of a rock drilling machine for percussive drilling, a joint in a hammer rock drill and a method to protect a rock drilling machine from corrosion, where the arrangement comprises a casing part with at least one plane end plane (3). The end plane consists of at least a first (4) and a second (8) region, where the first region (4) comprises at least a part of the outer contour (5) of the end plane (3) and consists of a material that resists corrosion.