Rebuilding and extending the lifespan of the pump through thermal spraying!
The interior of the pump casing has been worn due to years of erosion (fluid abrasion), so we have received a request to repair it while extending its lifespan. Issues: 1. Purchasing a new one is expensive. The drive unit, including the impeller, can be used without any problems. 2. The equipment can only be stopped for about a week. 3. Complete restoration of the shape is not necessary, but we would like to rebuild the worn areas as much as possible.
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basic information
We proposed the restoration of the casing interior through hard alloy thermal spraying. Film thickness: approximately 300μ. While restoring the worn areas, surface treatment will be applied to prevent further erosion in the future. An investigation of the wear condition will be conducted at the timing of pre-disassembly maintenance. Points: 1. High hardness (approximately HV1200) and strong against erosion, hard alloy will be applied through thermal spraying. 2. By creating masking jigs and adjusting processes in advance, we achieve a short delivery time. 3. The thermal spraying method selected is the High Velocity Oxygen Fuel (HVOF) method, which particularly realizes high density, high adhesion, and high hardness. 4. By masking unnecessary areas, we aim to reduce total costs (effective when using expensive thermal spraying materials). *Hard alloys are alloys primarily composed of tungsten carbide, known for their excellent wear resistance. They are widely used in cutting tools and other applications.
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