ITI Bangla

                      Try Square  The try square is used to Check the squareness.  The Blade is fixed to the stock at 90 Degree.  *Try Square is specified by length of the Blade *The accuracy of Square  square is about 0.002mm per 10 mm length . * Try Square is made of hardend Steel .  The try square is used to- 1) Check the squareness of machines  2) Check the flat Ness. & 3) mark line at 90 Degree.

  Reamer Which Tool is used for enlarging by finishing previously drilled holes to accurate size - Reamer Which taper shank is used for machine reamer to hold on machine spindle - M.T  Hand Reamer is used to the ream holes manually using - Tap wrench. The angle between the edges and the reamer axis is called - hELIX ANGLE. WHICH REAMER IS USED FOR REAMING MORSE TAPER HOL E - SOCKET. A Taper pin reamer is made with a taper of - 1 in 50. Which Flute reamer is suitable for reaming holes with key way grooves - Helical flutes reamer.   The cutting portion of reamer is made of - H.S.S. The Shank portion of reamer is made of - Carbon steel 

                                                       HACKSAW                                      A hacksaw blade is made of - Low alloy steel or high alloy steel. What is the standard length of hacksaw - 250mm to 300mm What is the pitch of the blade - the distance between adjacent teeth is known as the pitch . How many types of pitch of Hacksaw -   Coarse 1.8                                          -  Medium 1.4-1.0   ...

                                               (COMPUND OF METAL ) 1 ) Brass = Cu 70% + Zn 30 % 2 ) Munz Metal = Cu 60% + Zn 40%  3)  Dutch Metal = Cu 80% + Zn 20% 4) Bronze Metal = Cu 90% + Sn 10% 5) Monel Metal; = Cu 70% + Ni 30% 6) Roolled gold = Cu 90% + Al 10% 7) Bell Metal = Cu 80% + Sn 20% 8) German Silver = Cu + Zn + Ni 9) Delta Metal = Cu60% + Zn 38% + Fe 2% 10 ) GUN Metal = Cu 10% + Sn 1% + Zn 1% + Pb88% 11 ) Stainless steel = Fe 75% + Cr15% + Ni10% + C 12 ) Nickel steel = Fe 95% + Ni 5% 13 ) Nichrome + Ni+ Cr + Mn + Fe 14 ) Solder = Pb 50% + Sn 50% 15 ) Mangnalium = Al 95% + Mg 5% 16 ) Duralumin = Al 64% + Cu 3% + Mg2% +Mn1%

Vice     A bench vice is made of - cast iron or cast steel and it is used to hold work for filing, sawing, threading   etc.    Parts of a bench vice - Sl. Name of parts Material i Fixed Jaw          Grey cast iron ii Movable jaw Grey cast iron iii Jaw plates Tool steel iv Spindle Mild steel v Handle Mild steel vi Box Nut Phosphorous Bronze   The size of vice indicated by the – width of the jaw. Vice Clamps or soft jaw is made of – Aluminium. The vice clamps are used to – Protect the finish surfaces of the job. A bench vice is fixed at at a height of – Elbow Position . A bench vice is fixed at at a height of – 106 cm . The bench vice is called as Parallel jaw vice because – It’s...

According to Shape Files are seven types. Their are –   sl Name sl                Name I Flat File V Square file Ii Hand file Vi Triangular file Iii Half Round file vii Knife edge file iv Round file                                                    Flat file   These files are of rectangular cross section. The edges along the width of these files are parallel up two-thirds of the length, and then they taper towards the point. The faces are double cut and the edges single cut . These files are used for general purposes work .               ...

  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                  ...