Case studies
Crankshaft high pressure pump
Applied in: Food Processing | Mechanical Engineering
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Problem, idea and solution
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Problem
This concerns a high pressure pump for the dairy industry. The bore of the drive pulley is removed by fretting. The drive pulley was "working" the crankshaft resulting in fatigue and a piece of the stub axle breaking.
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Solution
The crankshaft was repaired by welding, creation of a new keyway and flame spraying and regrinding.
The bore of the drive pulley was repaired by flame spraying and internally re-ground.
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Fretting (pitting)
Fretting is a type of wear that occurs as a result of undesired tiny movements between two components. Consequently, wear...
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Surface fatigue
A type of wear in which cracks appear in the material as a result of repeatedly changing loads. Pieces of the material will often...
Specifications
| Principle dimensions (LxWxH): Ø1.080x950mm | Base material: 0.6025 (GG25) | Coating: Chrome steel |
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