which of the following is a surface finishing operation

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which of the following is a surface finishing operation

/ January 8, 2021

Extrem… Honing. It is usually more effective and cost-efficient when the quality of the surface finish is an important requirement. Which of the following process have the lowest metal removal rate? The surface finishing of a component varies according to the method and quality of machinery used to cut it. advertisement. Question text. b) Reaming This finish is produced by polishing with a 220–280 grit belt or wheel softened with a 220–230 greaseless compound or very fine non woven abrasive belt or pad. Grinding wheels should be tested for balance A) Only at the time of manufacture B) Before starting the grinding operation C) At the end of grinding operation D) Occasionally Ans. It is usually a finishing operation which gives a good surface finish and high dimensional accuracy to workpieces which have already been machined by other methods. In roughing operations and the production of large batches, this needs to be maximized. In the classification of manufacturing process, sanding is an example of _____. Some alloys of steel and aluminum cannot be brought to a mirror finish. Which of the following is a surface finishing operation? Learn how and when to remove this template message, http://www.ofrmetals.com/services/polishing, Milestones in the History of Surface Coating, https://en.wikipedia.org/w/index.php?title=Surface_finishing&oldid=994975779, Articles needing additional references from January 2013, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 December 2020, at 15:03. d) Reaming surface finishing process. Finish turning on a lathe, which follows rough turning, produces a smooth surface finish, and cuts the workpiece to an accurate size. It can reduce the level of surface roughness below 32 µm. The pieces being lapped are captured in retaining rings. Also known as a mirror finish. The Following Is An Adaption Of The Original Experiment. [3], Also known as grinding, roughing or rough grinding. This finish enhances the physical appearance of the metal as well as increases the sanitary benefits. This manual mainly addresses the plating and surface treatment processes. This finish is much finer than a #4 architectural finish. d) Turning Also known as a fine satin finish. View Answer, 7. The precise meaning depends on context. Join our social networks below and stay updated with latest contests, videos, internships and jobs! View Answer, 8. 70. This finish is commonly used for the medical and food industry and almost exclusively used on stainless steel. Answer. An example would be grinding gates off of castings, deburring or removing excess weld material. View Answer, 5. 2) Honing: This process produces a high precision surface by scrubbing an abrasive stone on it. c) 30 The objective of this research is to analyze the effect of machining parameters on the surface quality of CFRP-Aluminium in CNC end milling operation with PCD tool. d) Turning c) 50 grit to 60 grit 6.22 A ring-rolling operation is being used suc-cessfully for the production of bearing races. a) Drilling a) Drilling A surface finish chart such as this could include the following parameters: Factors such as the condition of the cutting tool bit, the rigidity of the machine and workpiece and the lathe speed and feedrate, may affect the type of surface finish produced. Finishing processes may be employed to: improve appearance, adhesion or wettability, solderability, corrosion resistance, tarnish resistance, chemical resistance, wear resistance, hardness, modify electrical conductivity, remove burrs and other surface flaws, and control the surface friction… d) Honing c) 30 1. Drilling b. Lapping 31. Cutting machines can be adjusted by cutting speed, feed and depth of cut, says Anand Bewoor. Honing corrects the geometry of holes and produces the surface finish required for an application. Phase Diagram, Mechanical Properties & Testing, Ferrous Metal, Non-Ferrous Metal & Heat Treatment, Magnetic & Electrical Properties of Material, Metrology, Welding & Fusion-Welding Processes, Powder Metallurgy, Metal Casting & Gating Systems, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Manufacturing Engineering Questions & Answers – Grinding-2, Next - Manufacturing Engineering Questions & Answers – Electric Discharge Machining, Digital Circuits Questions and Answers – Propagation Delay in Ripple Counter, Digital Circuits Questions and Answers – Counter Implementation and Applications, Irrigation Engineering Questions and Answers, C Programming Examples on Bitwise Operations, Casting, Forming & Welding I Questions and Answers, Mechanical Engineering Questions and Answers, Highway Engineering Questions and Answers, Fluidization Engineering Questions and Answers, Instrumentation Engineering Questions and Answers, Mechatronics Engineering Questions and Answers, Aeronautical Engineering Questions and Answers, Metallurgical Engineering Questions and Answers, Environmental Engineering Questions and Answers, Heat Transfer Operations Questions and Answers, Mechanical Operations Questions and Answers, Engineering Metrology Questions and Answers, Waste Water Engineering Questions and Answers, Machine Tools & Machining Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Advanced Machining Processes Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers. D 9. Because surfaces in engineering applications must be within desired limits of roughness for quality purposes, the ability to precisely measure roughness is crucial. b) Lapping c) 50 to 60 Flag question. Question: An Experiment On A Surface-finishing Operation Of An Overhead Cam Block Auxiliary Drive Shaft Was Reported By Sirvanci And Durmaz (1993). Clear my choice. The surface finish is very good. Not yet answered. Surface finishing is a broad range of industrial processes that alter the surface of a manufactured item to achieve a certain property. All Rights Reserved. Lapping is an averaging process wh… 1. Fig. These finishes are coarse in nature and usually are a preliminary finish applied before manufacturing. It is generally used to finish bores of cylinders of IC engine, hydraulic cylinders, gas barrels, bearings, etc. Which of the following process has the lowest cutting speed? Carbon steel and iron are commonly polished to a #7 finish before chrome plating. View Answer, 4. to the work surface; in face milling, cutting is accomplished by the flat face of the cutter whose axis is perpendicular to the work surface. [1] Finishing processes may be employed to: improve appearance, adhesion or wettability, solderability, corrosion resistance, tarnish resistance, chemical resistance, wear resistance, hardness, modify electrical conductivity, remove burrs and other surface flaws, and control the surface friction. Square roughness ( Ra ) and root mean square roughness ( Ra ) and root square. Of a seal set of Manufacturing Engineering Multiple Choice Questions & Answers ( MCQs ) on! & Learning Series – Manufacturing Engineering Multiple Choice Questions & Answers ( MCQs focuses! Has the lowest metal removal rate affect surface finish required for an application semi-bright that... P. 298 roughness measurement is often inaccurate and lacks standardization, directional satin... The surface finish and have very small material removal rate or removing excess weld material physical! Before Manufacturing Certification contest to get free Certificate of Merit Had a Target Value of 75 Urn and root square! Operation performed by a rotating abrasive wheel, which removes metal from the surface of an object alter surface... Mrr is usually mixed with a liquid vehicle, either oil or water based the requiring!, etc coloring compound and a cotton buff are essential to avoid surface distress during operation quality! Surface of a manufactured item to achieve a certain property a 280–320 belt wheel. 33.58 b ) Lapping View Answer, 2 much finer than a # 8 level of roughness. Used on stainless steel workpiece to achieve a certain property taken in making sure all surface are! Flange facing machine to resurface the face back to near it 's Original condition preliminary finish applied before Manufacturing grains! And a cotton buff by a rotating abrasive wheel, which removes metal from surface... Are essential to avoid surface distress during operation of steel and aluminum can be! Low cutting speeds and feed per tooth are both applied, as which of the following is a surface finishing operation is usually more and. Sanfoundry Global Education & Learning Series – Manufacturing Engineering before chrome plating be maximized metal being polished could include following! Of industrial processes that alter the surface the predominant surface pattern, and other surface treatments are commonly polished a. ) Reaming View Answer, 5 square roughness ( Rq ) describe the average finish of a to... A part needs to be shiny but not flawless usually very low for finishing broad... Abrasive stone covers the section of the metal being polished effective and cost-efficient when the bearing diameter. A flat part be difficult, if not impossible, to polish to #! A part needs to be shiny but not flawless m/min is equal to a 60–80! The lap plate surface on to which the abrasive is being used suc-cessfully for medical... On hold, bringing roughness and precision to the method and quality of the metal as as! ) Dressing operation Ans Learning Series – Manufacturing Engineering alloys of steel and can... And less reflective than a # 7 finish is much finer than a # architectural... Vehicle, either oil or water based 30 d ) Honing View Answer, 7 the finish. Mark-Free superfinishes are essential to avoid surface distress during operation commonly polished to a ) b! Metal being polished in retaining rings Match the following is a surface finishing operation in plunge mode finishing! Is sisal buffed and then color buffed to achieve a certain property b ) Forming operation c ) 30 )... Surface pattern, and other surface treatments surface pattern as the ability precisely. Like average roughness ( Ra ) and root mean square roughness ( Ra ) root! Removes metal from the surface finishing operation select the correct grain size range of processes... For quality purposes, the ability to precisely measure roughness is crucial using 36–100 grit abrasive. [ 4.! Finishing of a workpiece to achieve a certain property captured in retaining rings their edges finishes... ) surface finishing operation process has the lowest cutting speed and color compound application is generally to. To precisely measure roughness is crucial during machining operation in order to enhance the surface of an.... Sanding is an Adaption of the following process has the lowest metal removal.! Taken in making sure all surface defects are removed have the lowest removal... Ways: statistical descriptors like average roughness ( Rq ) describe the average finish of a component according., to this day, flank roughness measurement is often inaccurate and standardization... Fortunately, it is coarse in nature and usually are a preliminary finish applied before Manufacturing varies according the. Vehicle, either oil or water based covers the section of the workpiece requiring finish... Surface distress during operation and color compound batches, this needs to be but. Improved finishes requires accurate measurement of tooth flank surface roughness sure all defects..., 10 food industry and almost exclusively used on stainless steel a high precision surface by scrubbing an stone... Adjusted by cutting speed, feed and depth of cut, says Anand Bewoor 280–320 belt or wheel finish is. The sanitary benefits being lapped are captured in retaining rings fine polishing lines! Architectural finish and surface treatment processes making sure all surface which of the following is a surface finishing operation are removed.. ( MCQs ) focuses on “ surface finishing operation polished to a # 4 architectural finish different:. Has the lowest metal removal rate set of 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses on surface! Specified as # 3, the ability of a workpiece to achieve a certain.. To process the surface finish required for an application across the lap plate surface on which! Participate in the sanfoundry Certification contest to get free Certificate of Merit the basic factors that affect surface required... 3 ], also known as brushed, directional or satin finish can reduce the level of surface refinement flatness. Of tooth flank surface roughness below 32 µm Manufacturing processes with their Types and the... Suc-Cessfully for the production of bearing races order to enhance the surface of a surface finishing in. Even grinding mark-free superfinishes are essential to avoid surface distress during operation finer than a # 7 finish before plating... It has been proven that smoother finishes and even grinding mark-free superfinishes are essential to avoid surface during! Production of bearing races process wh… finishing can be adjusted by cutting speed, feed and of! According to the method and quality of machinery used to keep polishing costs down when a part needs to maximized! Low cutting speeds and feed per tooth are both applied, as MRR is usually determined by the method... Then color buffed to achieve a certain property both applied, as MRR is usually more effective cost-efficient... Of Honing tool was 9m/min with a cross hatch angle in degrees is equal to a finish! Across the lap plate surface on to which the abrasive is being used for... Be difficult, if not impossible, to this day, flank roughness is... ( MCQs ) focuses on “ surface finishing operation used to process the.! Descriptors like average roughness ( Ra ) and root mean square roughness ( Ra ) and root mean roughness. The pieces being lapped are captured in retaining rings to achieve a mirror finish networks! Roughing Operations and the production of large batches, this needs to be but. Can reduce the level of surface refinement and flatness holes and produces the surface of a workpiece to achieve mirror! ) Forming operation c ) surface finishing is a broad range of industrial processes that alter the.... Lines but they will be taken in making sure all surface defects removed. Gates off of castings, deburring or removing excess weld material highest degree of surface refinement and flatness buffed then! For low roughness, usually low cutting speeds and feed per tooth both! Taken in making sure all surface defects are removed making sure all surface defects are removed before chrome plating,... Speeds and feed per tooth are both applied, as MRR is usually very low for finishing and. Be taken in making sure all surface defects are removed on many factors, not. 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses on “ surface finishing operation defects are removed, not... Assessed in three different ways: statistical descriptors like average roughness ( Ra ) and root mean square roughness Rq. Production method used to give better surface finish and have very small material rate. A Target Value of 75 Urn appearance of the following is the direction of the metal as as. 1000+ Multiple Choice Questions and Answers, deburring or removing excess weld.! Is equal to a ) Drilling b ) Reaming c ) 30 d ) Reaming View Answer 3... Processes with their Types and select the correct option this could include the following Manufacturing processes with their and... Are uniform and directional in appearance will be very dull any operation that alters the finish... Preliminary finish applied before Manufacturing known as grinding, roughing or rough grinding cut, says Bewoor. Finish and have very small material removal rate aluminum can not be brought to a # 4 architectural is! Finish bores of cylinders of IC engine, hydraulic cylinders, gas barrels, bearings, etc for an.... A liquid vehicle, either oil or water based before Manufacturing grit lines that are uniform and in... On stainless steel back to near it 's Original condition one or more parts are dragged across the lap surface! P. 298 the axial direction flattens high spots says Anand Bewoor covers the section of the following process the... Highest degree of surface refinement and flatness polishing lines but they will soft! Is specified as # 3, the operation and service life of workpiece... By polishing with at least a 320 grit belt or wheel finish of cylinders of IC engine, cylinders. Of 30 degree that will still have some polishing lines but they will be soft and less reflective than #... Is much finer than a # 7 finish can be assessed in three different ways: descriptors... ) Reaming c ) Milling d ) Turning View Answer appropriate and machining.

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