PLASMA SPRAY METHOD FOR HOT OIL PUMP SLIDING BEARINGS

Abstract

The invention provides a sliding bearing for hot oil pumps that requires high rigidity and consequently high wear resistance. It relates to a new coating developed to provide surface friction resistance. In the invention, surface friction antimony carbon and by controlling coefficients and increasing surface shear strength Service life of tungsten carbide-cobalt based sliding bearings in hot oil pumps and by increasing surface hardness, the wear problem is solved. For this purpose, plasma High hardness and wear resistance are achieved on sliding bearing surfaces using the spray method. A nano coating that provides benefits is applied.

Description

PLASMA SPRAY FOR HOT OIL PUMP SLIDING BEARINGS METHOD Technical Area The invention provides a sliding bearing for hot oil pumps with high rigidity and consequently high wear resistance. It relates to the Plasma Spray (PP) coating method developed to provide durability. The invention specifically concerns Plasma in antimony carbon and tungsten carbide-cobalt based sliding bearings. A new, applicable coating technique developed using the spray method. It relates to the use of coatings. State of the Art Sleeve bearings, used in hot oil pumps, are a type of metallic bearing. By absorbing friction between rotating and sliding parts, it reduces vibration and noise. It is one of the critical pump components. It is made of antimony carbon or tungsten carbide-cobalt based material. Sliding bearings are used in hot oil pumps in high temperature (300-350 °C) and pressure environments. It operates at (10-16 bar) and may encounter wear problems with prolonged use. It remains. In current applications, sliding bearings are used for oil flow rates of 500 m³ / h and head pressure of 105 m³ / h. constantly subjected to wear under conditions where it reaches meters or higher This wear occurs in low-viscosity fluids that do not contain particles. Even when used, the sliding bearing will suffer due to the friction effect created by thermal conditions. This causes the material to wear out. This situation, over time, affects sliding bearings. making it necessary to change it, tightening maintenance processes and thus reducing operating costs. It increases. Research into the current state of the art reveals Plasma Sputtering (PP) nanocoating. There are shortcomings regarding the applicability of the technology to sliding bearings. This shows that current solutions can improve the wear resistance of sliding bearing surfaces. 2 It fails to provide adequate performance and long-term stability under high temperature and pressure. It is unable to provide. Some solutions found in the literature aim to increase surface hardness and wear resistance. It includes various coating methods to improve performance. However, most of these solutions Inadequate for sliding bearings of hot oil pumps operating under high temperature and pressure. It remains. In patent document US9016429 B2, a supported on an axle is described. The text discusses sliding beds and describes specific coating techniques. However, Plasma... Increasing wear resistance by applying nano-coating via spray method. There is no statement regarding this. Plasma spray nanocoating method provides high hardness to sliding bearing surfaces. by improving wear resistance and reducing surface roughness, thereby lowering friction. It has potential. However, in current applications, the Plasma Spray method uses hot oil. sufficient in systems with high temperatures and dynamic loads, such as pumps This has not been researched, and there is a technical gap in this area. For these reasons, increasing the surface hardness of sliding bearings aims to extend their service life. The need for an improved, innovative Plasma Spray coating application has emerged. It has been released. Brief Description of the Invention The present invention meets the aforementioned requirements while eliminating all disadvantages. This is achieved using the Plasma Spraying (PP) method, which removes and brings some additional advantages. It relates to surface coating. The invention is created by drawing inspiration from existing situations and aims to solve the aforementioned drawbacks. It aims to... The main purpose of the invention is to provide high wear and heat resistance to the sliding bearing of a hot oil pump. The goal is to develop plasma spray coating applications that increase service life by improving performance. The invention involves controlling surface friction coefficients and increasing surface shear strength. Antimony-containing carbon and tungsten carbide-cobalt based sliding bearings in hot oil pumps 35. The wear problem is solved by increasing their service life. 3 Thus, higher pressure, higher temperature and higher flow rates to suit the demand. Wear in the sliding bearings is the biggest weakness of hot oil pumps that can operate. The problem is eliminated and a longer-lasting system is provided. Consequently... as per customer requirements, higher flow rate and head values. It is applicable. Similarly, different coating properties can be achieved depending on the type of liquid being printed. More flexible and applicable in all situations depending on the operating temperature and pressure. A high-performance structure is obtained. Thanks to the coating that is the subject of this invention, one of the critical components of hot oil pumps is protected. Friction of antimony-containing carbon and tungsten carbide-cobalt based sliding bearing surfaces By controlling the coefficient, hardness and surface shear strength can be increased. The lifespan of sliding mattresses is extended. The coating developed for this purpose is applied to sliding beds using the Plasma Spraying (PP) method. It is applied to the surface. Thanks to this method, high hardness and wear resistance are achieved. Enriched nanomaterials are coated onto sliding bearing surfaces, resulting in long-lasting and durable products. A durable structure is obtained. By applying the aforementioned coating:  Tungsten carbide-cobalt sliding bearings with a surface hardness of 1300-1400 Vickers Hardness is increased by 25-50%.  In antimony-treated carbon sliding bearings with a surface hardness of 40 HRc, the hardness is 80 HRc. By raising the level, a 65-90% increase in hardness is achieved. The invention involves the application of Plasma Spraying (PP) method to produce antimony-containing carbon and tungsten. Alumina (Al₂O₃), Chromium Oxide (Cr₂O₃) and carbide-cobalt based sliding bearing surfaces High hardness, 2-50 micron thick, composed of zirconium oxide (ZrO₂) nanoparticles. and it is coated with a wear-resistant layer. After coating, surface grinding and polishing processes are applied to minimize surface roughness. reduced, thus producing a product with a low coefficient of friction, high hardness and high shear strength. 35 strength sliding bearing surfaces are obtained. 4 In this invention, Al₂O₃, Cr₂O₃ and ZrO₂ nanoparticles are stratified using the Plasma Sputtering (PP) method. It is applied to the bed surfaces by spraying, followed by grinding of the surfaces, and By polishing, hardness and wear resistance are increased. Thus, the hot-mixed hardening and wear resistance of sliding bearings are improved. By extending the operating life of oil pumps, maintenance costs are reduced and they are more durable. A system is obtained. The structural and characteristic features of the invention and the advantages it provides are detailed below. This will be understood more clearly thanks to the explanations. Therefore, during the evaluation... Detailed explanations need to be taken into consideration. Detailed Description of the Invention In this detailed explanation, the preferred configurations of the invention are not merely for better understanding the subject. It is explained in a way that facilitates understanding. The invention provides a sliding bearing for hot oil pumps that requires high rigidity and consequently high wear resistance. This is achieved using the Plasma Spraying (PP) method, which was developed to provide durability. It relates to a new coating method. This coating is preferably applied after cleaning the surfaces. ready-made antimony carbon and tungsten carbide-cobalt based cylindrical sliding It is applied to beds. Within the scope of the invention, the Plasma Spraying (PP) method is used to apply heat to the sliding bearing surface. Alumina (Al₂O₃), Chromium Oxide (Cr₂O₃), and Zirconium Oxide (ZrO₂) nanoparticles This coating method is applied to provide protection against high temperatures and abrasion conditions. A durable, homogeneous, and low-porosity coating is obtained. The advantages offered by the Plasma Spraying (PP) method are as follows:  The coating must provide high adhesion strength to the surface,  It forms a homogeneous, low-porosity structure,  Increasing the surface hardness of the sliding bearing,  By reducing the coefficient of friction, it improves wear resistance,  Achieving longer-lasting sliding bearing surfaces,  It provides a cost advantage. This method allows for high temperatures to be achieved in the sliding bearings of hot oil pumps. A long-lasting and high-performance coating is obtained under pressure and heavy wear conditions. is being done. Another method used in the invention is the Plasma Spraying method. This The method directly removes chromium with alumina (Al₂O₃) nanoparticles, which has a Vickers hardness of 1300-1400. 2 3 Zirconium oxide (ZrO₂) with a Vickers hardness of 1250-1300, using Cr₂O₃ nanoparticles. 2 3 2 coating layers with similar high hardness, 50-100 microns thick, containing nanoparticles. It is coated by plasma spraying onto the sliding bearing surface, subsequently the aforementioned The surface is ground and polished. The specific parameter values ​​specified in the coating and method subject to the invention are the desired coating. This has been determined in the studies carried out within the scope of the invention, in order to ensure its quality. For example, when the maximum temperature and time values ​​are exceeded, the substrate material's internal structure changes. Changes occur in the grains, and hardness may decrease, consequently reducing wear resistance. If left underneath, it cannot be compatible with the coating layer and the desired mechanical properties cannot be achieved. It may not be achievable. The desired homogeneity and thickness cannot be obtained.

Claims

1. The invention relates to the hot-slunging of antimony-containing carbon and tungsten carbide-cobalt based sliding bearings. to enable its use in oil pumps; the surface of the said sliding bearing Sliding bearings are designed to increase hardness, wear resistance, and service life. It is a method of applying a coating to a surface, characterized by the plasma spraying method. using direct alumina (Al2O3) nanoparticles, 1300-1400 Vickers chromium oxide (Cr2O3) nanoparticles with a Vickers hardness of 1250-1300 Zirconium oxide (ZrO2) nanoparticles with similar high hardness of 50-100 microns Coating layers of a certain thickness are sprayed onto the sliding bed surface using plasma. coating, followed by grinding and polishing of the surface. It includes.