Overhaul of a steering gear HPU
Full recovery of the hydraulic power unit driving the rudder, with pump replacement and contamination brought back within specification.
Read the case studyWelding · Industrial
Valve seat recovery by welding and machining
Recovery of an eroded seat by weld build-up in a compatible material and re-machining to the original dimension.
Execution
The sequence applied and the engineering decisions taken
The order below reproduces how the work was actually carried out, including the points where the condition found required a change of scope.
- Inspection of the seat and assessment of the extent of erosion, to confirm that recovery was feasible.
- Welding procedure specified, with a consumable compatible with the body material and the working fluid.
- Area prepared, preheated and built up by welding with interpass temperature control.
- Post-weld heat treatment in line with the procedure.
- Finish machining of the seat to the original dimension and surface finish.
- Reassembly and recorded leak test.
Comparison
Condition before and after the intervention
Drag the slider to switch between the two recorded conditions.
- Before
- Eroded seat passing internally and leaking under test.
- After
- Seat rebuilt by welding and re-machined to the original dimension, leak-tight under test.
Result
What the intervention delivered
The valve was recovered and passed its leak test in four days, at a fraction of the cost of replacing the body and without depending on the delivery time for a new component.
4
days on the job
0
leaks in testing
1
component recovered rather than replaced
Photographic record
Job gallery
The photographic record forms part of the technical report handed to the client and feeds the equipment history.
Portfolio
Other completed projects
Transmission shaft manufactured by reverse engineering
Manufacture of a transmission shaft for discontinued equipment, worked up from the fractured component with no manufacturer drawing available.
Read the case studyFull overhaul of a mooring winch
Complete overhaul of a mooring winch with drum recovery, hydraulic drive overhaul and load testing.
Read the case studyTechnical support
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