Articles Posted in the " Manufacturing " Category

  • mcqs-heat treatment

    mcqs-heat treatment

    mcqs-heat treatment Keywords: critical temperature-TTT diagram-super heating-super cooling % of carbon in low carbon steel is 0.3 % 0.03% 5% None Ans: (i) % of carbon in medium carbon steel is 0.1 to % 0.3 % 0.3% to 0.7% 0.3 to 0.5 %% and None Ans: (iii) % of carbon in high carbon steel is […]


  • MANUFACTURING: COOLANTS

    MANUFACTURING: COOLANTS

    MANUFACTURING: COOLANTS   COOLANTS FLUIDS USED DURING MACHINING Definition, Functions, Properties, Examples, Maintenance and disposal Definition Cutting fluid is a fluid which is employed during machining operations such as turning, drilling, reaming, grinding, stamping and milling. It reduces the friction and hence reduces the power requirements. It cools the tool as well as the work piece.  […]


  • Heat treatment

    Heat treatment

      Heat Treatment  Heat treatment of steels gives different forms of modified micro-structures and modified desired physical, chemical and strength properties. Heat treatment does phase transformations during heating and cooling after changing a micro-structure in a solid state. Heat treatment processes are mostly thermal only (Heating and cooling) and changes only micro-structure. The object is […]


  • Metals and Non-Metals

    Metals and Non-Metals

    Metals and Non-Metals  Sr. No. Metals Non-Metals  1.  Metals are solid at room temperature. Mercury is an exception. Non-Metals are solids, liquids and gases at room temperature.  2.  These are malleable i.e. These can be changed into thin sheets under a compressive load. Non metals are not malleable. These get crushed under a compressive load. […]


  • * Standardization, Advantages, disadvantages  and Preferred Numbers

    * Standardization, Advantages, disadvantages and Preferred Numbers

      Standardization, Advantages, disadvantages and Preferred Numbers Keywords: Standards-Prefered numbers-quality-reliability STANDARDIZATION Standardization is the development and implementation of technical standards. Standardization helps mass production for safety, quality, interchangeability and compatibility. The standards are for size, weight, quality and strength.There are National and International standards. National standards are for almost every item. In India it is BIS (Bureau […]


  • *MANUFACTURING METHODS

    *MANUFACTURING METHODS

    MANUFACTURING METHODS Keywords: Product,  Casting- Forming- Joining- Machining- Rapid Prototype Methods of Manufacturing DEFINITION OF MANUFACTURING Manufacturing is a sequence of effective and economical processes to convert raw material into a useful finished product as per National or International standards. Manufacturing is wealth producing while a service sector is wealth consuming. Steel industry and semi-conductor […]



  • Comparison between Welding and Riveting

    Comparison between Welding and Riveting

    COMPARISON BETWEEN WELDING AND RIVETING Advantages of Welding Welding is fast and hence saves time in manufacture and assembly Welding provides more strength Welding produces light structures Disadvantages of Welding Welding is costly as welding equipment is costly and requires highly skilled worker. Deposited metal is very costly Welded joints do not have damping capacity. […]