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CENTRE OF EXCELLENCE [CHEMICAL GROUP] CHBT – 02 [ BASIC FITTINGS & MEASUREMENTS ] Instructor :- Mr. A.H. SHAH PRESENTATION
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Introduction Concept of Safety Personal Safety – General Safely & Plant / Industry Safety Accident Caution Prevention Safety Management Machine Guard Good House Keeping Lighting Ventilation Temporature Fire Safety Material Landling SAFETY IN CHEMICAL INDUSTRIES
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Personal Safety Equipment First Aid Industrial Discipline PERSONAL SAFETY
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The ferrous Metals and alloys used : Pig Iron Cast Iron Wrough Iron Steels and Alloy Steels METROLOGY
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PIG IRON Gray cast Iron Casting of Machine parts, Machined easily White cast Iron : Very Hard, Very difficult to machine (Chilled cast Iron) can not be weleded. Molleable cast Iron : Increased ductility, tensile strength and toughness, produced from cast Iron Nodular Cast Iron : Similar to malleable cast Iron, Produced without any heat treatment. Wrouht Iron : 99.9% of Iron production puddling process astron or byres process shaft. CAST IRON
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STEEL (PLAIN CARBON STEEL) Classified according to their carbon content. Dead mild steel0.1 to 0.125 % CarbonUses wire, road & Sheets Mild Steel0.15 to 0.3 % carbonGeneral workshop process Medium Carbon steel0.3 to 0.7 % carbonAxles, drop forgines, High tensile tubes, wires, agriculture tool. High Carbon Steel0.7 to 0.9 % carbon 0.9 to 01.1 % carbon 1.1 to 1.4 % carbon Springs, forging, dies and wood chisels. Cold chisels, press dies, punches. Files, drills, gauges and other cutting tools MANUFACTUREING PROCESSES Bessemer ProcessL.D. Process Electric ProcessOpen Hearth Process
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STEEL RULE S.I. (System International) System Matric Ssystem : meter, C.M., M.M., (MKS) British System Feet, Inch (FPS) STEEL RULE : 10 MM, 5 MM, 1 MM, 0.5 MM Introduction : Material Measuring with steel rules. MEASUREMENTS Linear Measurement Units
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Introduction Material Parts : Fix Jaw ( 1 and 2) Moveable Jaw ( 3 and 4) Vernier Slide (5) Beam (6) Depth Bar (7) Thumb Lever (8) Vernier Scale (9) Main Scale (10) Least Count of vernier Calipers Main Scale division = 1 mm Vernier Scale Division = 49 / 50 mm Least Count =1 – 49 / 50 = 50 – 49 = 1 / 50 = 0.02 mm 50 Reading of verner caliper VERNIER CALIPER
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Use Function of each parts : PARTS : (1) Base (2) Beam (3) Vernier Slide (4) Fine adjusting screw (5) Main scale (6) Lock nut (7) Scriber VERNIER HEIGHT GUAGE
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Introduction : 0.1 mm Principle : Screw & Nuts, Parts : Range : 0.25 mm, 25 – 50 mm, 50 – 75 mm, 75 – 100 mm Graduation : Barrel 1 mm and 0.5 mm (Main Division & sub division ) Themble : 0.01 mm Numbers on Barrel : 0, 5, 10, 15, 20 & 25 mm Numbered on Thimble : 0, 5, 10, 15…… 45 – 50 on Clockwise direction OUT SIDE MICROMETER
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The Distance move by the spindle during one rotation of thimble is 0.5 mm. Movement of the one division of the thimble = 0.5 x 1/50 = 0.01 mm List Count : Small Parts of Barrel Numbers of parts on thimble = 0.5 = 0.01 mm 50
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Introduction : Parts : Use : Graduation : Main Scale 0 O -90 O -0 O -90 O -0 O -90 O Vernier Scale : 12 Part, Each 3 rd Line is marked 0- 15 – 30 – 45 - 60 List Count : 2 MSD – 1VSD = 2 o – 23 o = 1 o = 5 1 12 12 Reading : MSD = 41 o VSD = 0 – 50 1 Reading : 41 o - 50 1 VERNIER BEVEL PROTRATOR
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Introduction : Principle : Types : Plunger Types & Lever Types Parts : 1.Pointer 2.Ratatable Bezzle 3.Bazzle Clamp 4.Back Lug 5.Transparent dial Cover 6.Stem 7. Plunger 8. Anvil9. Revolution Counter Graduation : Readng : Stand : Dial Test Indicator
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Introduction : 1.Protractor Head 2.Square Head 3.Centre Head 4.Rule COMBINATION SET
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Steel Rule Scriber : Future of Scribers Use of Scribers Try Square : Parts Use Divider : Parts Use Specification HAND TOOLS
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Jenny Caliper : Constructional features Types Use Punch : Name of different Marking Punch Use Hammers : Use Parts Types Work Holding Device : Banch Vice : Parts & uses Size Vice Clamp
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HACKSAW FRAME AND BLADE Types of Frame : Solid Frame Adjustable Frame Hacksaw Blades : Introduction Types Pitch of Blade CUTTING TOOLS
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Introduction : Material : HSS How to hold a File Parts of a File ELEMENT OF A FILE
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Specification : Cut Grade : Rough, Bastard, Second Cut, Smooth, Dead Smooth Shapes : Flat, Hand, Square, Triangular, Half Round, Knife Edge, Size : 100 mm to 200 mm Light Work 200 mm to 450 mm Heavy Work Types of Filing : (1)Cross Filing(2) Straight Filing (3) Draw Filing File of Pinning TYPES OF CUT
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Material Types : Parallel Shank and Taper Shank Parts of Drill : DRILL
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Drill Size Matric System & British System Letter Drills : A / 5.944 mm to Z / 10.490 mm Number Dril : 1 / 5.791 mm to 80 / 0.35 mm Cutting Speed : V = JJ x D x N Meter / Minut 1000 Feed :- REVOULUATION = THICKNESS OF METAL CUTTING FEED Drill Holding Divice : Slive, Socket, Chuck & Key Drift. Drill Angle : Point Angle, Rake Angle, Helix Angle DRILL SIZE
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Twist Drill 9.50 IS5101 HS Types Dia ISNo. Material Drill Defect & Causes : Oversize Holes Over Heated Drills Rough Hole Unequal and Interrupted flow of chips Split webs or broken drills Drilling Machines Banch Type Pillar Type Drill Specification : Drill Defect & Causes :
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HAND REAMERS Introduction : Parts : Drill Size for Reaming : Reaming : HAND REAMERS
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HAND TAP & TAP WRENCH (INTERNAL THREADING) Introduction : Material : Parts : Tape In Set : Taper, Intermidiate & Plug Tape size Drill : Drill Dia = Tape Dia – 2 x 0.61p Tape wrench : HAND TAP & TAP WRENCH INTERNAL THREADING
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Construction : Types : Die Stock : Types – Split Die Stock` Adjustable Die Stock DIE AND DIE STOCK EXTERNAL THREADING
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V Thread Types : V Thread Parts : ISO Metric Thread : ISO Inch Thread : (UNF) BSW : BSF : BA : BSP : STANDARD SCREW THREAD
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Bolt : Types – Hexagonal & Square Nut : Types – Hexagonal & Square Washer : Purpose Types Specification Revet : Introduction Material Types FASTNERS
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High Limit : Law Limit : Tolerance : Fit : Clearance Fit Interference Fit Transition Fit LIMIT AND FITS
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Classification : Thermoplastic Adhesives Thermoplastic Resins Thermoplastic Rubber Thermosetting adhesive Heat Activated Solvent Activated Impact Adhesives SYNTHETIC ADHESIVE
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Lock Nut Self Locking Nut Wire Lock Slotted and Castle Nut With Split Pin Grooved Nut Locking Nut Lock – Washer with Lug Tab Washers Spring Washers LOCKING DEVICES
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Purpose : Types : Fixed Type Removable Type FOUNDATION BOLTS
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COE CHEMICAL SECTOR ITI DASHRATH THANKS
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