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  Geometric Tolerance control frame and Commonly used Symbols The picture shows Geometric Tolerance control frame used in Engineering drawing/Drafting Auto Cad. It also shows commonly used symbols used in the drawing. Refer the image for...

Spheroidizing ; The heat treatment process which produces globular form of carbide in steel is known as Spheroidizing. Purpose ; To soften high carbon steel to increase the machinability. Process : Any process of heating and cooling that...

Maraging Steel :- 1. Maraging Steel find applications as aluminum die casting dies, inserts, extrusion dies, forging dies, punches, cold hardening dies and dies holder. 2. Maraging Steel are low carbon, high nickel alloy steel ,...

Tempering - The process of reheating hardened steel to some temp. below its critical range in order to decrease hardness and impart toughness is known as tempering. Purpose : 1. To impart toughness to an already...

Lower Critical Temperature All Steel being heated at a uniform rate from room temperature show a comparatively much slow rise in temperature on reaching a temperature about 723 deg. Celsius. This temperature at which a...

High Speed Steel HSS :- HSS removes metal at a much higher rate or speed than ordinary carbon Steel. HSS are categorized by being heat treatable to very high hardness (64 HRC) and of retaining their...

Normalizing ; 1. Refines most part of the steel. 2. To remove internal stresses. 3. Reduce brittleness caused by cold working. 4. Restore toughness of metal reduced by prolonged hot working. 5. To obtain finer grain structure and relatively...

Annealing - Purpose, Process and Effects.  Annealing - Improves softness and ductility in steel and other cold worked metals. Purpose : 1. To induce softness in steel. 2. To remove strain hardening and increase ductility of cold worked...

Gauges - Definition, Types, Principle and other details Gauges - Gauges are checking instruments and they play an important role in ensuring the limits and tolerances for a given component. Gauges are broadly classified as : 1....

Limits, Fits and Tolerance : These three words are one of the most confusing words in terms of their definition. One is linked to the other. In all sorts of interview related to Mechanical these...