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Types Of File part- 1/ classified of file and uses/ previous year question from file



  FILE

 

https://youtu.be/9SqKnA4Cqzo

   File is used for removing excess material this method is known as filing.



Parts of file - 

        

 Files are made of – High carbon steel or high grade cast steel.

Ø     Files are Specified according to there – Length , grade, cut and shape.

Ø    What is the length of a file – The length of a file is the distance from tip to the heel.

Ø    What is the grade of a file – The grade of a file is spacing of the teeth.

                                  


  *Files are many types according there Grade, Cut and Shape.

 According to Grade - five types of file 

 

SL.

   Name

                                   Uses

      I.             (i)

Rough file

Rough file is used for Removing rapidly a larger quantity of metal.

   II.             (ii)

Bastard file

Bastard file is used where heavy reduction of material

III.           (iii)

Second cut file

Is used to give a good finish on metal.

IV.             (iv)

Smooth file

To remove small quantity of material and to give a good finish.

   V.             (v)

Dead smooth file

Is used to bring to accurate size and to give high degree finish.

                   

According to cut - four types   

 

Sl.

Name

                  Uses

I.

Single cut file

Is used for filing soft metals like brass, copper, bronze, aluminium etc.

II.

Double cut file

Faster than the single cut.

III.

Rasp cut file

Is used for wood, lather and only half round.

IV.

Curved cut file

Is used for tin, plastic.


 

                            

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Ø          The second cut file is a – Grade of file.

Ø         Rasp cut file is used – for filling wood, leather.

Ø        The length of a file is the distance – form tip to the heel.

Ø         During filling sometimes the metal chips will clog between the teeth of file, this is       known as -- pinning of files.

Ø         Pinning of the file is removed by using a – File card.

Ø       Tang – is The part of file that is not hardened.

 

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Location: India

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