Diseño de una planta de fosfatación al manganeso, por inmersión, para herramientas de transporte de petróleo en la empresa Sertecpet S.A. – Base Coca

Abstract

The research is a design of a manganese phosphating plant, by immersion, of tools for oil transportation in the company Sertecpet S.A. - Coca Base, located in the city of Coca, province of Orellana. The experimental method was used to identify the process variables corresponding to phosphatization. For the simulation, tests were carried out in the laboratories belonging to Sertecpet; using devices such as: balance, pH meter, titration equipment. The variables that were determined are: layer weights, temperature, free acidity and total acidity. The laboratory techniques have their scientific basis in the standardized procedures of Tenaris Hydril (TSH) and in the standardized methods of the US Militaty Standards (MIL - STD) and the American Society For Testing And Materials (ASTM). Using a concentration of 80 mL/L of the chemical product Fosfation 40, through a 5-minute immersion at a temperature of 90 °C, phosphate coupons with a uniform surface and good adhesion are obtained, with a coating weight of 1979 mg/ft2. In conclusion, the parameters established in the manganese phosphating process allow obtaining phosphate coatings according to the procedure TSH.PP.00.0018. It is recommended that the company's technicians daily control the acidity of the phosphating bath and measure the pH in the rinsing stages.