Engineering workshop report for first year students kathmandu university, Lab Reports of Engineering

Download Engineering workshop report for first year students kathmandu university and more Lab Reports Engineering in PDF only on Docsity! ENGG 104 ENGINEERING PROJECT WORKSHOP PRACTICES REPORT ON ENGINEERING PROJECT DATE OF PERFORMANCE: ‘Ll BR, ROLL No (G2 DATE OF SUBMISSION : 12/03/2020 GROUP: BE in Chemical Engine er ing  SHEET Table of contents : METAL a i Tsple, Page no- j. | Introduction ' 2. Objectives 1 3. | Applications 4 | 4. | Operations | 2 5. | Tools required | z 6. | Machine used 4 + | Materials yequived 4 g-| Sequence of operations 5 | g. | Safety precautions 5 wo. | Quality control Report 6 ne | Gthantt Report | 6 ». | Cost Estimation 7 | 3. | Conclusion 7 14. | Figures - 3 | { Tools Required : 1) Marking and Measuring tral s_ a) Steel scale Steel scale is measuring instrument or a tool used to measure the dimension of an object in centimette or in inch. It is made of stainless steel, where divisions are calibrated in it- Usually , feng side (30 em) are used for dimensioning . b) Centre punch A centre punch is used t mark the centre of a point - Ie | | | | | | is usually used f mark the centre of a whole object when Arilling holes - 2). Cutting _toals 0) Snipe, | Tt is just ike Scissors which is used to cul thin soft | metal sheet of about 20 gauge of thinner. It is commonly known | as hand shear. Snipes can make a straight or circular cut: | 3) Striking tools a) Mallet Mallet is a type of hammer used for straightening dents on the metal surface. It has a rubber jike or a plastic Ike head which helps fo give smooth shape and straighten the dents - a Machines Used: 1) Bending machine { Folding machine Tt is used for bending and folding the edges of metal plates from the joint. The machine consists of folding parts where the sheet is led int and manually the handle is moved upward which execute folding process - 2) Drilling. machine It is a dyill machine controlled with power circuit used for making hele needed for riveting. It vans when the alternating current is passeal through it- Materials Required ) Gt sheet Galuanized jron sheet of required area is used as the job piece. Gjaluanized ion sheet is a soft steel coated with majten | zine. Articles such as pons, furnaces, buckels , cabinets ete ave made from it - 2) Rivets... Few rivets of aluminium are also required. Rivets are the permanent fixture » generally made up of malleable metal which can deform by certain bew. After the hole is marked with the use of center punch , vivets are fastened ts make a Permanent joint:  Sequence of Operations: 1) The metal sheet was cut from the standard size sheet metal to get the required area of job piece . 2). The metal sheet was made plan by using mallet hammer. 3): Required alimension were marked by the help of steel seale ond a marker: 4)- The sheet was cut into required dimensions 5). The cut sheet was folded bending machine . using Snipe - at required angle using the folding | 6)- The final Proper shape was obtained by hammering it with mallet hammer - 7): The sme same Process has been applied t obtain the handle of the dust pan: 8) The pont was morked with centre, PUNCh where the riveting has ts be dene. 9). The point was grilled and rivets were fastened & make a permanent yoint between the pan and the handle. Safety Precautions : i) Shoes and aprons should be wern during work. ii) Hammering should be dene with care. i) Cutting works and use of Pointing tools should be done with cafe - ) Hand- dill machine should be used under supervision of fab Super visor. a  “7 af L aD | I | jot o | 120 1 | KATHMANDU SHEET METAL UNIVERSIT 4 INVERSITY 703 04 SCALE 2  200 ALL DIMENSIONS IN mm 182 SCALE  AV. YX Lo Ney C \ \ Y HAMMER MALLET TTT TIT yt itt THT PUTT Ty ttt I { | ] | | [ ] | ‘ a 6 5 \ 1 | \ | i | i | STEEL SCALE  FOLDING MACHINE DRILLING MACHINE  | | | | i | | { | { | | BENCH WORK AND FITTING Introduction: Bench work, is the work done primarily at bench with hand tools ushich is & occasionally supplemented by small power driven toals. A bench fitting is a mechanical job work done using 2 bench vice to held the job and the operation with netmal manual fools. Objectives » i) To goin the basic knowledge about the different tools used in fitting - ii) To develop the skills in handling operation trols like file. saw, hammer eft: iit) Ta have knowledye about the different operations such as chipping , tilling ’ marking , tapping » sawing , filing ek. Introduction of KU Jogo: of KU is developed by using different tools and steed. The metal used to make a kV logo is mild height of 50mm and width of 55 mm enriched A logo working on a mild steel. KU logo has a ina triangular rod. | Applications of KO_logo* i) Tt can be used for decorations. ii). It can be used to @ gift others. | ii). It can be used as penholder: Operations: 4) Marking : Tt is the frst process of the which is dene so that the operative derived measurement eyvror can be prevented: operation. Marking is the operation shape can be obtained and 2) Filing 3 It is the mest important operations th be est Temoue the rough edges from cu Ik serv of quls f give fina! shape of work piece - performed in fitting shop. fs and clean the faces | 2) chipping: chipping is the prec | of chiseal. In chipping, | vemoved by striking a chisel an the surface eSS of removing thick layer of metal by means the job is held in vice and the metal is of work piece by hammer. 4) Sawing : Tt is the quickest method ef setuing, shoping and slutting metal. be sawed should be lightly held ina vite and is cut The piece to of hacksaw - with the help Jhe metal rod is drilled by cutting ds extemal’ thread. with (a dye and stock, JE is also called external threading 6) _Gatinding : Tt is the process of removing metal by use of grinding hel wnecls most any surface which has been previously rough It smoothens the sur} hich és hat ug | | | 5) Dyeing : | | | | It is used to finish a | shaped by other methods - to be worked by other equipments « | 4) Holding Tools _. .. | 0) Bench vice : The vice used in fitti d in fitting Process is bench vice. The vice | essentially consists of cast irsn baby s fixed jad beth made | of cast steel, 4 handle » a square threaded screw and q i nut all made of mild steel - 6) Dye stock : Steck with dye to cut screw thread on round bar of metal | is called dye stock . Dye is round or Square block of | hardened steel with a hale containing thread and flutes which | form cutting edges 5) Cle aning tools a) Brush: It is used ft clean the sutface area of the work. Machine Used ) welding tnachine / The machine used for welding metals is called welding | machine . It is used t> join the metals parts trgether. | Metal Required 2 The metal required for KU {ogo is mild steel. Since, the KO Iago in triangular rod, it has tf be attached within wooden base- Also the metal used in triangle is mild steel - >a is en riched Sequence of operation : 1) The provided metal piece was first marked with scale and seriber: 2) After marking, the work piece was filed at one surface te make it smooth and perpendicular te adjacent side - 3) The marked metal piece was then cut fb get actual shaped logo 4) the Tough surfaces was filed with the help of filers. | 5) In order fo remove metal pieces from job piece , chisel was | used. | 6) Then, the surface aas filed again - 7 Te obtein a triangular form , the metal was bended using a bending machine - 8) All the metal parts of rod and kU fogo was joined b aselding : : J | 9) small rod was again cut and welded along with KU lego: | 1d) The vod was threaded with the help of external thread die. 1) Finally it was painted dried and fixed on the wooden block, - | Safety pre cautions : | | 4). Tools should be handled carefully. 2). Apron and gloves should be worn - 3) Machines { welding machine ) should be used only under supervisors |) The machine and tools which we don't have enough knowledge, should be handled with supervisors - ha Quality Control Report SN Description Remarks. 4. | Perpendicularity Good 2. | Smoothness Good 3: Finishing S atis factory Quantitative : SN: Description eT ee 7 Deviatim | Length of logo BS 55 90 width of logo 50 50 S Height of logo 40 a3 +3 | Angle of logo 4° age -2 . | Diameter of loge 6 6 a Ghantt chart : SN: Fletivities per week (3 hts per day } 4. Marking 4. Sawing 3 Filing 4 Welding 5. Painting Werk complete d er at Total working hours = 9 hrs. Werk fo be Ay WY OY completed ¥ x tors solitit ute va faralaseataial wabssialislos| cola STEEL SCALE salid Frome HACKSAW sted blade TRY SQUARE  4 ZA DOUBLE END scrIBER FLAT FILE Wy iv) SQUARE FILE HALF ROUND FILE TRIANGULAR FILE  A DIE STOCK WITH DIE WELDING MACHINE A SOLID DIE CLEANING BRUSH Application: | The base is fitted in the KO le and is used as poper | holder, os a token and also as a decorative item. | Materials required : \ a) Wooden _plece : Length = 60 mm Breadth = 60 mm Height = 45 mm | Machine Required : | ) | | a) Drill_machine: The drilling machine is the total used to drill the holes , of different size and felated operations using a dill bit. They are characteristic ally corded electricity driven devices, with hand operated types. Drills ate commonly used in wood | warking 1 metal working » construchon and ability products. | | ae Operations ‘ 1) Marking and measuring :_ The given job piece (wooden block) is measured with the help of steel scale ond the dimensions of ftequived shape and size afte marked with the hep of pencil, try square etc . Marking the outlines and setting the correct dimensions. It i's the | common practise Petformed in workshep . b) Cutting | After marking and dimensioning the bhek of wood, it is cut into desired shope and size. It is done with the help of | tip saw. The job piece shoul be used tightly on the bench vice. | The wood is cut with forward stroke - | | | ©) Filing | It is done of the important operation done to make the | wooden job piece plane and smooth. In this case, we used | sandpaper for filing - This gives finishing look to the job piece. { 5 d) Drilling Tt is the proces of making or cutting a solid hole in a solid material using a rotating culting tool. It is done within the help of hand driller machine . ©) Chipping _ = Chipping is done with the help of chisel if necessary . It is the process of breaking or cutting useless structure. | | | | | Tools required 4) Marking and measuring tools. a) Steel scale | It is one of the most important tool in the carpentry - Jt is | used to measure the requited length of the wood. Zt consists of strips of hardened steel having the divisions of cm or inch | engraved in ite | | b) Try _ square | It is an L- shaped fool with beam and blade. This is used t | | | when it is necessary to get another edge or surface exactly at | right angles to the true surface. | 2) Holding tools | a) Bench vice The most common type of tool fe holafing wood ( jab piece) is | bench vice - The vice essentially consists of cast iron body , a | fied jae and a movable jae both made up of a cast steel, q | pandie, @ square threaded screw, and a rut; all made of | mill steel. The holding faces of jaw plates have teeth for holding ' the work firmly The size of the vice is known by the width of | the jans: The width suitable for common werk varies from 80 to [HO mm- 3) Cutting tools a) Ripsaw The sas which are used to cut along the grains of weed are | called vipsaw Tt consists of two teeth per cm length of blade. ‘the blade is made up of high grade steel and wooden handk is provided for firm grip: The pressure is applied during the forward stroke and released during forward stroke - } | |  qlitative : use Description oo ne Remarks Perpendicularity Smad Smoasthness i Good Finishing ; Goo Coloring ie oe Satisfactory le f lon | Required Measured, | | SN: | Measurement eae | a Deaton | 7 | 4 | Length of base 4 20 2 5 | 2 | length of base 2 | Ao 4p ° | 3. | Length of base 3 | © | 59 Ey || | Height of base 4 | 18 ‘S | é | | | 5 | Height af base 2 | 15 iy | 4 | | = neste of Pew 3 | on) | | Total height | = =| © | Total heig| | as as Be | | | SN | Ghantt Chart — \ \ | 2. a 4. Filing Drilling Activity per day (3 houts per ral 4 | 2 _| Marking and Measuring Cutting ( Sawing) Total werk hous > 3 hrs. Work completed =~ Gost Estimation « oe terial cost § cost of block, ( 60 X 60 x 45 mms) = Rs. 200 Color = Rs. 44 6 [20 mt (Rs. 700 / 4) Labour cost : Gest of labour per hour = Rs. 50 Total working hours = &-3 hrs. Total cost = Rg. 150 | Other Cost : Drill = Rs. § Total cost = Rs. 200+ 14+ 180+ 5 > Rs. 369 Profit = Si of Rs- 369 = Rs: 18-45 Total s-p. = Rs. 36+ IAB = Rs. 387-45 | Conclusion: | Conclusion: \ { | The job of carpentry practise was finished with a geod | finishing on time. After completing this job, we learned t& use | diferent types of tes and geil experince fir farther use in | the future - | | | | | |  | | ALL DIMENSIONS IN mm KATHMANDU UNIVERSITY CARPENTRY JOB 03 SCALE §