Indian Cylinder Liners' Informational Blog

by Liner Sleeves Auto Industries

Cylinder liners market in India seeking growth

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Cylinder liner, a hollow cylindrical shell, acts as the enclosure within which combustion happens. Manufacturers of cylinder liner India are making these products robust and providing them enough strength to withstand the high level of hoop stress.

The market of cylinder liners and auto parts in India is seeking more growth. More manufacturing companies are designing efficient auto parts and components for modern cars to meet the standards and specifications. OEMs shops in India are limited and they are exporting their products to worldwide clients.

Little acknowledgement about cylinder liner:

Manufacturers use CI material to fabricate cylinder liner due to its lubricating properties. Cylinder liner has good strength and anti-corrosion property. It offers a good surface for the piston and allows them to slide along its length. Cast iron material is porous in nature that prevents and minimizes the risk of seizure of the piston when the cylinder liner is at operating mode.

However, the cast iron material is not strong enough and thus, manufacturers mix small quantity of elements like copper, chromium, or nickel. Manufacturing of small liners is done by centrifugal casting, where as sand casting method is used for larger liners. The inner cylinder liner surface is usually chrome plated. But it doesn’t allow oil to spread out effectively and so, lubrication is done in bad manner.

You should know that a cylinder liner having cylindrical shape is a removable part. It is made from close grained cast iron. In four stroke cycle engines, they are flanged at the top end to offer space and secure them within the cylinder blocks or to the water jacket.

Below the flange, there is a joint ring made of copper or in a heat resistant rubber. The lower end has rubber rings that seal the area. These rubber rings are used for preventing oil leakage from the crankcase to water jackets.

The cast iron has a self lubrication property due to the presence of graphite content. You can still adjust the oil supply through the individual lubrication pumps placed at the engine front at the control level. Excess oil will get removed from the liner through piston oil scraper rings, and deposited in the scavenge air space.

Manufacturers of cylinder liners and other auto parts are seeking more business opportunities outside the country. Cylinder liner India market has leading suppliers that are offering their comprehensive range at competitive rates. You can search them online and get more details.

Cylinder Sleeves Manufacturers tell you the Reasons for Liner Wear

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Machines and parts do wear when you use them continuously. Cylinder sleeves manufacturers bring various reasons to explain why wear and tear of the machine and parts take place and how can one prevent it. There are some maintenance and routine checks important to ensure that the machines work for more hours. This article explains all the things that you should know. Read it to explore the reasons behind degradation of your machine.

There are generally four reasons that cause wear in machines and the components:

  • Friction
  • Abrasion
  • Corrosion
  • Adhesion or scuffing

Damage due to friction

Whenever two surfaces slide over each other, friction happens that leads to wearing of these surfaces. Liner sleeves surfaces are worn out due to friction between the piston rings and cylinder liner. The frictional wear relies on several factors like movement speed between the surfaces, temperature, pressure, maintenance, material involved, lubrication, and combustion efficiency.

Damage due to corrosion

Machines are made of metals and metals do corrode. The wear happens due to corrosion is caused by the burning of heavy fuel oil inside the combustion space. The heavy oil used by the machine has high sulphur content. During combustion process, acids are developed within the space which should be neutralized by cylinder oil as it is alkaline in nature.

Corrosion due to sulphur will be high because moisture is present in the fuel, which condensate in the air. The wear happens near the quills and provides a characteristic of the clover leaf shape to the wear pattern. This is known as clover leafing.

Damage caused by abrasion

When hard particles are present and form during combustion process, abrasion occurs. The ash and the catalytic fines in the fuel formed during the combustion result in abrasion and cause wear.

Damage caused by Scuffing or adhesion

This is a type of local welding between the piston rings and the liner surface. When the piston moves inside the liner, welding breaks and leads to the formation of abrasive material.

What can be done to avoid wearing of liner sleeves?

Cylinder can be protected against wear and tear by avoiding any ingress of water within the liner. You can treat the fuel oil and prevent moisture incoming. Maintaining the correct feed rate and cylinder oil grade will also help.

For any doubts or assistance, contact cylinder sleeves manufacturers of your town.

Cylinder Sleeves Manufacturers Talking About Steel Liners

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Steel may seem like an unsuitable material to cylinder sleeves manufacturers for making cylinder liners. The density of the steel is almost three times of aluminium. The thermal expansion of the steel is much lower than the aluminium piston that runs inside it, and it also has low thermal conductivity.

Still there are manufacturers that use the steel for making liners and you can expect the lowest total engine mass, despite its density. The major benefit of using steel for constructing cylinder sleeves is its strength and stiffness.

Cylinder liners made of aluminium are popular products as they conduct heat well. As compared to steels, the allowable stresses in aluminium are low, which increases the thickness of material to maintain stress within allowable limits. This implies the water jacket and the material surrounding it are bigger.

Problems with Aluminium :

The usual effects are that the engine block is heavier, and the crankshaft is heavier and longer. Another one is that the cylinder head fasteners are forced by the combustion chamber, which increases bending stresses. Even if the aluminium cylinder liners are usually lighter when compared to their steel counterparts, the new design of engine with aluminium liners is heavier.

Aluminium based liners can also get damaged by cavitation, hence manufacturers put coating on the exterior of the liner surface to make it more resistant to cavitation. However, when it is steel liners, cavitation doesn’t happen, still the products need surface treatment to prevent excessive corrosion.

The thermal conductivity is not so bad as well. Steel cylinder liner can be thinner as compared to aluminium to match fatigue stresses or displacement. This implies that the rate of heat transfer can be high for steel component as for an aluminium one.

There is nothing to tell about the steel strength that can help offset the fact that the thermal expansion coefficient is lower than the aluminium. Manufacturers need to understand that they should use larger cold clearance between the piston and liner to match the thermal expansion coefficient of aluminium.

Though the steel is not designed for use as a cylinder liner material, still manufacturers apply it for cylinder liners. The material is not widely available, nor is it easy to source in suitable liners sizes.

For more details on cylinder sleeves and liners, you can write a mail to Cylinder Sleeves Manufacturers, Liner Sleeves. They are best suppliers and exporters of liners and sleeves products throughout the globe.