March 8, 2017

How to do Engine Surface treatment through coating process?

When the vehicle engine exhausts are blown up due to any fault or even bad oil use or critical conditions of use, it isn’t a great idea to swap engine with a crate engine which is always costly. Engine rebuilding or engine reconditioning can give you the same results in almost half price you are about to pay for a new engine. Every engine user always quest for performance, reliability and durability of engine and it is not a big game to attain these things during the engine reconditioning process. The actual problem starts from the rust and slug developed in the engine with the time. It is not possible to get ultimate performance without recovering the engine surfaces and treating them in a way which is most advanced and reliable. To attain the ultimately clean surfaces on the engine parts such as crank shaft, pistons, cylinder bores, crank bearings or even cylinder heads and valve seats, various type of surface treatments being used. The process of surface treatment has been evolved with the time but in this article we will discuss basic methods of surface treatment.

Surface treatment through coating process

Engine treatment through coating of surface has evolved as an ultimate way out for problems. The coating processes have vexed engine reconditioning companies for years. Once the coating processes were considered a solution for exotic solutions for racing car engines but they are now being used on a great range of engines and performance applications. There are different types of coating used for multiple purposes and it is an engineer’s job to select the best suitable method to treat the surface of engine parts.

Anti-Friction treatments and Coatings

As it is clear from the name that this type of surface treatment can only be used on the moving parts which remains under the great influence of power and heat. These parts include engine bearings, piston skirts and valve train mechanisms to decrease friction and deliver lubrication in the case of normal lubrication supply line cuts down or stopped due to any reason. Majority of these treatments are based on dry film lubricants that comprise of graphite, molybdenum disulfide, tungsten disulfide or some time there might be used a polymer like PTFE (Teflon) in a thermosetting polymer binder. The best property of these treatments is that these coatings can retain oil to maintain lubrication on bearings and piston skirts. One of the most common but very useful ways is to surface treatment of critical engine parts.

Treatment through Hard Surface Coatings

For the most times, engine pistons comprise of aluminium and they for their entire life face serious heat and impacting dynamic forces during the combustion process. It is the best way to hard anodizing aluminum pistons to get the best results. The recommended treatment for the crankshaft journals is nitriding them by applying thin film coatings such as chromium nitride, titanium nitride, or Diamond-Like Carbon (DLC) on cylinder head valves, wrist pins lifters, and other parts to extend the life of the parts. These are the ultimate factors behind ultimate performance of engine.