Design & Casting Of Cylindrical Brass Pipe

Supervised by Professor Dr. Kazi Md. Shorowordi

In our day-to-day life cylindrical liner has plethora of uses. In this project I have cast cylindrical liner made of brass (65% Cu, 35% Zn). Brass cast products are known for strength, ductility and corrosion resistance. In order to induce such combinations of properties, I have cast the cylindrical liner in the traditional sand-casting process.

A cylinder liner is a cylindrical part to be fitted into an engine block to form a cylinder. It is one of the most important functional parts to make up the interior of an engine.

This is called Cylinder liner in Japan, but some countries (or companies) call this Cylinder sleeve. These are main functions of Cylinder Liners. The cylinder liner, serving as the inner wall of a cylinder, forms a sliding surface for the piston rings while retaining the lubricant within. The most important function of cylinder liners is the excellent characteristic as sliding surface and these four necessary points.

1. High anti-galling properties

2. Less wear on the cylinder liner itself

3. Less wear on the partner piston ring

4. Less consumption of lubricant

The cylinder liner receives combustion heat through the piston and piston rings and transmits the heat to the coolant.

Brass has higher malleability than bronze or zinc. The relatively low melting point of brass (900 to 940 °C, 1652 to 1724 °F, depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is approximately .303 lb/cubic inch, 8.4 to 8.73 grams per cubic centimeter.

Cylindrical liner can be cast both in traditional sand casting or centrifugal casting. In traditional sand-casting process almost 60% extra metals are required for gating system. So, it is expensive to use sand casting process.