CASTING PROCESS

 METAL CASTING PROCESS 

What is casting ?

Casing process is defined as the process of producing metal or alloy component of desired shape by pouring it into mould by used necessary cooling process to solidify & this solidify metal or alloy piece is known as casting 

    • The manufacturer of a casting requires
    1. Preparation of pattern
    2. Preparation of mould with the help of the pattern 
    3. Melting the metal or alloy in the farnance 
    4. Pouring of molten metal into mould cavity
    5. Breaking the mould to retrieve the casting
    6. Cleaning the casting and cutting of risers, runners etc.
    7. Inspection of casting 


    • The place where casting process are carried out is known as foundry, Casting is also known as founding.(bellow image shows foundry)


    • Casting are made in a large number of metal and alloys , both ferrous and non-ferrous, grey cast iron components are very common;
    • Steel castings are stonger and are used for components subjected to higher stresses.
    • Bronze and brass casting are used in ships and in large marrine environment, where ferrous items will be subjected to heavy corrosion.
    • Alluminium and magnesium casting are used in automobiles purpose 

    • Stainless steel casting are used for making cutlery items 

    • Casting is economical way of producing component of required shape in large lots or in small lots 
    • Casting are less strong as compared to forging 
    • In casting process very little metal is wasted 

    Comments

    Post a Comment

    Popular posts from this blog

    MATERIALS , CLASSIFICATION OF MATERIALS .

    Image
     WHAT IS MATERIALS ?      Materials is a substance or, mixture of a more substance that is use for as input in manufacturing process and can be used for making or doing something . New materials are produced from raw materials . Mild steel, tor steel, cast iron, aluminium, copper, concrete, bricks, tiles, stones, timbers, glass are commonly used materials for engineering purpose.  Important properties of materials are mechanical, thermal, chemical, electrical, magnetic, physical, etc. practically in engineering generally materials are used for structural purpose, machine parts or electrical & electronics devices CLASSIFICATION OF MATERIALS  Elastic material :  A material is said to be perfectly elastic when the deformation produced under the action of external loads and regains its original size and shape after remove external deforming load. for example:- rubber are the best example of elastic material Plastic material:- A materials is said to be plastic material when the deforma
    Read more

    ENTHALPY

    Image
     ENTHALPY WHAT IS ENTHALPY ? Enthalpy is a thermodynamic property of system , it is the sum of the internal energy added to the product of the pressure and volume of the system  H = E +(PV) where , H = enthalpy              E = internal energy               P = pressure              V = volume It reflects the capacity to do no mechanical and capacity to release heat . Enthalpy is denoted by H & the specific enthalpy is denoted by h . Common units are used to express enthalpy are Joule's , colorie , BTU ( british thermal unit) Enthalpy is constant in throatling process Eenthalpy of system measurement is possible to measure the difference between in enthalpy between one state and another IMPORTANCE OF ENTHALPY It is used to calculate the head of reaction of a chemical process measuring the change in enthalpy , to determine wheather a reaction was endothermic ( absorbed heat positive change in enthalpy ) OR exothermic ( released heat , negative change in enthalpy) change in enthal
    Read more