MFT I Manual

8/3/2019 MFT I Manual

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FACULTY OF MECHANICAL ENGINEERING


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EX : 1 DATE:

MAKING A GREEN SAND MOULD WITH SOLID PATTERN

AIM:

To Make a Green Sand Mould for the given solid Pattern.

MATERIALS REQUIRED:

Pattern Moulding sand Parting sand

TOOLS REQUIRED:

Moulding boxes Moulding board Shovel Trowel Rammers

Sprue pin Riser pin Strike off bar Draw spike Vent rod

PROCEDURE:

The given solid pattern is placed on the moulding board. Parting sand is applied over the pattern and the moulding board. The drag is placed on the moulding board such that the pattern is at the

center of the drag box.

The prepared moulding sand is filled and evenly rammed in the drag box. Exesss sand is removed using strike off bar. The drag box is turned upside down. The cope box is placed on the drag box. The sprue pin and riser pin are kept at the respective positions. The parting sand is filled and rammed in the cope box. Vent holes are made in the cope box. Sprue and riser pins are removed from the cope box. The cope box is kept aside and the pattern is removed using draw spike. The cope box is placed over the drag box.


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RESULT:

Thus the green sand mould cavity is prepared using the given solid pattern.


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EX : 2 DATE:

MAKING A GREEN SAND MOULD WITH SPLIT PATTERN

AIM:

To Make a Green Sand Mould for the given split Pattern.

MATERIALS REQUIRED:

Pattern Moulding sand Parting sand

TOOLS REQUIRED:

Moulding boxes Moulding board Shovel Trowel Rammers

Sprue pin Riser pin Strike off bar Draw spike Vent rod

PROCEDURE:

The given split pattern is placed on the moulding board.

Parting sand is applied over the pattern and the moulding board. The drag is placed on the moulding board such that the pattern is at the

center of the drag box.

The prepared moulding sand is filled and evenly rammed in the drag box. Excess sand is removed using strike off bar. The drag box is turned upside down. The cope box is placed on the drag box. The sprue pin and riser pin are kept at the respective positions. The parting sand is filled and rammed in the cope box. Vent holes are made in the cope box. Sprue and riser pins are removed from the cope box. The cope box is kept aside and the pattern is removed using draw spike. The cope box is placed over the drag box.


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RESULT:

Thus the green sand mould cavity is prepared using the given solid pattern.


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EX: 3 DATE:

HORIZONTAL WELDING

AIM:

To weld the two metal pieces of mild steel to form a horizontal welding

(Single V butt joint) using arc welding machine.

MATERIALS REQUIRED:

Mild steel plate- (100x50x6)mm -2 NosTOOLS REQUIRED:

Welding transformer Electrode Gloves Tong

Chipping hammer Wire brush Welding shield Electrode holder

PROCEDURE:

First study and measure the given work for the required dimensions. The two mild steel plates to be welded are cleaned using the wire brush. Then the plate being welded is kept on a steel plate which will act as a

cathode. The welding electrode is held in the holder manually. The welding transformer is switched on and set the required value of current

density.

The plates are maintained with a gap of 3mm and do the tack welds at thetwo ends of the plates.

The tack weld kept the work piece in a same position without anymovements.

After that the welding electrode is bring to make a contact with one endwork piece and the welding is carried out by fulfilling the gap between the

two plates.

Then the work is allowed to air cooling or water cooling. Finally the slag which is formed on the work is removed using chipping

hammer.

RESULT:


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Thus the horizontal welding of two steel plates is carried out using Arc welding.


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EX: 4 DATE:

VERTICAL WELDING

AIM:

To weld the metal pieces of mild steel to form a vertical welding using arc

welding machine.

MATERIALS REQUIRED:

Mild steel-(100x50x6)mm -2 NosTOOLS REQUIRED:



PROCEDURE:


cathode.

The welding electrode is held in the holder manually. The welding transformer is switched on and set the required value of current

density.


The tack weld kept the work piece in a same position without anymovements.

After that the welding electrode is bring to make a contact with one endwork piece and the welding is carried out by fulfilling the gap between the

two plates.


hammer.

RESULT:

Thus the vertical welding of two steel plates is carried out using Arc

welding.


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EX: 5 DATE:

OVER HEAD WELDING

AIM:

To weld the metal pieces of mild steel to form a overhead welding using arcwelding machine.

MATERIALS REQUIRED:

Mild steel-(100x50x6)mm -2 NosTOOLS REQUIRED:



PROCEDURE:


cathode.

The welding electrode is held in the holder manually. The welding transformer is switched on and set the required value of current

density.


The tack weld kept the work piece in a same position without anymovements.(The Planes should be at 90 to each other)

After that the welding electrode is bring to make a contact with one endwork piece and the welding is carried out by fulfilling the gap between thetwo plates.


hammer.

RESULT:

Thus the overhead welding of two steel plates is carried out using Arc

welding.


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SQUARE TRAY

SIZE- 100 X 100 mm


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EX: 6 DATE:

MAKING OF SQUARE TRAY

AIM:

To make a square tray using the given sheet metal.

MATERIALS REQUIRED:

22 Gauge Galvanized iron (GI) sheet.TOOLS REQUIRED:

Steel rule Mallet Scriber Divider Protractor

Snips Stakes Rivet set Ball peen hammer

PROCEDURE:

The size of the given sheet is checked for its dimensions using a steel rule. Then the sheet is leveled on the leveling plate. The development procedure is followed the same as the square. The dimensions are marked as shown in figure. The sheet is cut as per the marked dimensions by straight snips. Then a single hamming is made on the four sides of the tray as shown in

figure.

The four sides of the tray are bent to 90 using the stakes anvil. Finally all the corners of the tray are joined by riveting.

RESULT:

Thus desired square tray is made using the given sheet metal.


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RECTANGULAR TRAY

SIZE- 120 X 100 mm


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EX: 7 DATE:

MAKING OF RECTANGULAR TRAY

AIM:

To make a rectangular tray using the given sheet metal.

MATERIALS REQUIRED:

22 Gauge Galvanized iron (GI) sheet.TOOLS REQUIRED:

Steel rule Mallet Scriber Divider Protractor

Snips Stakes Rivet set Ball peen hammer

PROCEDURE:

The size of the given sheet is checked for its dimensions using a steel rule.

Then the sheet is leveled on the leveling plate. The development procedure is followed the same as the square. The dimensions are marked as shown in figure. The sheet is cut as per the marked dimensions by straight snips. Then a single hamming is made on the four sides of the tray as shown in

figure.

The four sides of the tray are bent to 90 using the stakes anvil. Finally all the corners of the tray are joined by riveting.

RESULT:

Thus desired rectangular tray is made using the given sheet metal.


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STEP TURNING


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EX: 8 DATE:

STEP TURNING OPERATION

AIM:

To machine a work piece by step turning operation using a Lathe.

MATERIALS REQUIRED:

MS round rod-103x32 mm.TOOLS REQUIRED:

Lathe machine Tool holder with key Cutting tool Outside Caliper Steel rule Vernier Caliper

PROCEDURE:

The given work piece is held firmly in a lathe chuck. The given work piece is set in a tool post such that the point of the cutting

tool coincides with the lathe axis. The machine is switched on to revolve the work piece at the selected speed. By giving cross feed and longitudinal feed to the cutting tool, the facing and

turning operations are done respectively.

Then the step turning operation is carried out and work piece until therequired dimensions are obtained.

Finally switched off the machine and then removed the work piece from thechuck.

RESULT:

Thus the step turning operation are performed on the lathe to obtain the

required dimensions are machined.


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TAPER TURNING


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EX: 9 DATE:

TAPER TURNING OPERATION USING COMPOUND REST METHOD

AIM:

To machine a work piece by taper turning operation by compound rest

method using a Lathe.

.MATERIALS REQUIRED:


Lathe machine Tool holder with key Cutting tool

Outside Caliper Steel rule Vernier Caliper

FORMULA USED:

Taper angle () = (D-d)/2l

Where

D =Large diameter of taper in mm

d =Small diameter of taper in mm

l =Length of tapered part in mm

=Angle of taper

PROCEDURE:


tool coincides with the lathe axis.

The machine is switched on to revolve the work piece at the selected speed. By giving cross feed and longitudinal feed to the cutting tool, the facing and

turning operations are done respectively.

The compound rest is swiveled for the calculated taper angle. By giving angular feed to the cutting tool through the compound slide, taper

turning operation is done.


RESULT:

Thus the step turning operation are performed on the lathe to obtain the

required dimensions are machined.


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DRILLING AND KNURLING


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EX: 10 DATE:

DRILLING AND KNURLING OPERATION

AIM:

To machine a work piece by drilling & knurling operations using a Lathe.

.MATERIALS REQUIRED:


Lathe machine Drill bit Knurling tool

Outside Caliper Steel rule Vernier Caliper

PROCEDURE:


tool coincides with the lathe axis.

The machine is switched on to revolve the work piece at the selected speed. By giving cross feed and longitudinal feed to the cutting tool, the facing and

turning operations are done respectively. By giving longitudinal feed to the tail stock, the drilling operation is done. The speed of the work piece is reduced and the knurling operation is done

using knurling tool.


RESULT:

Thus the drilling and knurling operation are performed on the lathe to obtainthe required dimensions are machined.

MFT I Manual

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