Brass – Alloys and Uses

Alloying Elements in Brass and Uses All brasses are basically alloys of copper and zinc. There are two main type of brass. (i) Alpha brass (upto 37% Zn) for cold working. (ii) Alpha beta brass...

Stress- Strain Diagram

Stress Strain Diagram is very important diagram to understand the concepts of mechanical engineering. It depicts the variations of strain alongside stress and the various points on the graph i.e. limit of proportionality, yield...

Objective Questions

Objective Questions and Solutions, Mechanical/Production (a) Manufacturing is the process of converting raw material into ______Finished Product_____ (b) The ductility of a piece of chalk is ____approx. zero_______ Answers are marked bold (c) The % of carbon in...

Grinding

Grinding : Abrasives, Grit, Classification of wheels, Bond and Grade The grinding process is capable of producing very accurate sizes, equally accurate geometry like flatness or circularity and extremely good surface finish. The...

Types of Drilling

Following are major types of drilling ; Step drilling: More than one diameter can be ground on the drill body which saves an extra operation. Counter boring: Often a flat surface is needed around...

Objective Questions – Metals and Alloys

Pick out the most appropriate option: Answers are marked bold ; 1. Mild steel is an alloy of iron and carbon with percentage of carbon ranging from (a) up to 0.2% (b) 0.15–0.3 (c) 0.3–0.5 (d) above 0.5. 2....

Alloys of Nickel

ALLOYS OF NICKEL (i) German silver. It is a cupro nickel to which zinc has been added. A typical composition is 60% copper, 30% nickel and 10% zinc. Addition of zinc brings down the cost....

Non Ferrous Metals and Alloys

Non Ferrous Metals and Alloys - Properties and Uses : Non-ferrous metals and alloys do not contain any significant quantity of iron. The most common non ferrous metals used in engineering applications are copper, aluminium,...

Bronze and its types

Bronze ; Bronze is an alloy of copper and tin however commercial bronzes may contain other elements besides tin. In fact, alloys of copper with aluminium, silicon and beryllium, which may contain no...

Advantages of NC/CNC Machines

CNC Machines have these advantages : High Repeatability and Precision e.g. Aircraft parts. Volume of production in CNC is very high Complex contours/surfaces need to be machined. E.g. Turbines Flexibility in job change, automatic tool...