Gat No. 129, Near SM Mart, Ganesh Nagar, Talawade, Pune - 411062, Maharashtra, India
A ceramic coated metal sleeve is a steel sleeve with a thermally sprayed ceramic layer on its running surface. Fitted over a pump shaft under the packing or seal, it takes the wear in place of the shaft. Ultraweld Coat manufactures them in Pune with chrome oxide, alumina titania and aluminium oxide coatings.
We are leading Ceramic Coated Metal Sleeves manufacturer in Pune, at Ultraweld Coat Pvt.Ltd. we are also Supplier, Exporter, and Service Provider with our setup located in Pune, Maharashtra, India.
We are one of the top companies in Pune for Metal Sleeves with a Ceramic Coating. As a leading Ceramic Coated Metal Sleeves manufacturer in Pune, our product is highly dense, highly resistant, and has a wide range of industrial uses. We produce and deliver the goods in accordance with industry standards and quality requirements.
A ceramic coated sleeve is a metal sleeve, usually stainless or alloy steel, whose working surface carries a thermally sprayed layer of oxide ceramic that is then ground and polished. The metal body gives strength and an accurate fit on the shaft; the ceramic gives a very hard, chemically inert running surface. On a pump the sleeve sits under the gland packing or seal, so it takes the wear instead of the shaft and can be replaced at a fraction of the cost of a new shaft.
| Coating | Character | Typical use |
|---|---|---|
| Chrome oxide (Cr2O3) | Very hard and dense, with excellent wear and chemical resistance and low friction against packing | Pump sleeves, shaft seal areas, flingers |
| Alumina titania (Al2O3 + TiO2) | Tougher than plain alumina and takes a fine finish | Idler pulleys and guides for textile and wire drawing, godet rolls |
| Aluminium oxide (Al2O3) | High hardness with very high electrical resistance | Parts that must insulate electrically as well as resist wear |
The choice depends on the fluid, the solids it carries and how hot the sleeve runs. Ceramic coatings perform best where the sleeve is kept cool by a controlled leakage through the packing. If the sleeve may run dry or see sharp temperature swings, a tungsten carbide coating tolerates the heat and shock better. Our team can recommend a coating for your pump application, and sleeves are finished in our own grinding shop.
In many cases, yes. If the steel body of the sleeve is sound, the worn ceramic is stripped, a new layer is thermally sprayed and the sleeve is ground back to its original diameter and finish. Re-coating a sleeve usually costs much less than replacing it.
Ceramic offers excellent wear and chemical resistance at lower cost where the sleeve stays cool. Tungsten carbide is the safer choice where the sleeve can overheat, run dry or take impact.
A ceramic coated sleeve is finished by grinding and polishing. The sprayed ceramic is ground with diamond wheels to the drawing diameter, then polished to the smooth finish that the gland packing or lip seal needs in order to run on it without wearing quickly or leaking.
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