Increasing Pump Life In Abrasive Service Through State-Of-The-Art Surface Protection
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In hydrocarbon processing and oil and gas industries, many pumps are required to transport fluids containing some level of abrasive solids. If not properly designed and equipped with wear resisting materials, the pump components can be worn in a matter of months if not weeks. This paper describes the approach adopted to increase pump life when exposed to fluids containing abrasive media. Pump design issues were addressed. Surface treatments were evaluated using testing and modeling techniques. New surface coatings were developed. Service life was improved through a combination of mechanical and fluid dynamic design changes and the use of wear resistant materials. The program lead to the development of two new thermal-spray carbide coatings. The first has an extremely high abrasion resistance. The second has a good combination of abrasion and cavitation resistance and can be deposited to a thickness in excess of 0.040 inch (1 mm). Field test clearly showed the benefit of using these carbide coatings to substantially increase component life. It was determined that chemical vapor deposition (CVD, boriding) is a viable technique for the coating of difficult to access areas, which can be used in conjunction with high velocity oxy flame coatings for extensive pump protection.
Cropper, Michael S.; Schmid, Richard K.; Mohanty, Mahesh (2000). Increasing Pump Life In Abrasive Service Through State-Of-The-Art Surface Protection. Texas A&M University. Turbomachinery Laboratories. Available electronically from