which of the following is a surface finishing operation

Match the following. Question 18. Though the surface finish requirements are not as severe, it is critical to ensure surface finish recommendations are met to maximise seal performance and life. Also known as a fine satin finish. Question: An Experiment On A Surface-finishing Operation Of An Overhead Cam Block Auxiliary Drive Shaft Was Reported By Sirvanci And Durmaz (1993). c) 50 to 60 Gun drilling. Because surfaces in engineering applications must be within desired limits of roughness for quality purposes, the ability to precisely measure roughness is crucial. Finish turning on a lathe, which follows rough turning, produces a smooth surface finish, and cuts the workpiece to an accurate size. Profile milling generally involves the milling of the outside periphery of a flat part. d) 25.23 Cutting machines can be adjusted by cutting speed, feed and depth of cut, says Anand Bewoor. Resolving this requires a flange facing machine to resurface the face back to near it's original condition. c) 50 grit to 60 grit For practical honing conditions, cross hatch angle in degrees is generally taken in the range of a) Drilling Surface finishing is a broad range of industrial processes that alter the surface of a manufactured item to achieve a certain property. The abrasive stone is slowly fed in radial direction while its oscillation is imparted in the axial direction. This is a semi-bright finish that will still have some polishing lines but they will be very dull. Also known as a mirror finish. D 9. The Lay is the direction of the predominant surface pattern, and is usually determined by the production method used to process the surface. 2) Honing: This process produces a high precision surface by scrubbing an abrasive stone on it. Surface finish ----- B. Rivetting 3. To practice all areas of Manufacturing Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers. These finishes are coarse in nature and usually are a preliminary finish applied before manufacturing. A sintered powder metallurgy (PM) component can be finished or treated just like any other metal component to achieve desired characteristics—corrosion resistance, improved strength and hardness, surface wear resistance, edge-sharpness relief, porosity sealing, and control of size and surface finish. super finishing operation in plunge mode Super Finishing In this case the abrasive stone covers the section of the workpiece requiring super finish. View Answer, 8. a) 20 to 40 It involves a skilled craftsperson who uses a soft iron tool together with a mild abrasive slurry to slowly work the surface with random, light and non-linear motions by hand. Cross hatch angle in degrees is equal to 1. 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. This is commonly applied to keep polishing costs down when a part needs to be shiny but not flawless. 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. A #7 finish is produced by polishing with a 280–320 belt or wheel and sisal buffing with a cut and color compound. a) Drilling d) 10 to 15 Drilling b. Lapping 31. View Answer, 10. In plunge grinding The surface finishing of a component varies according to the method and quality of machinery used to cut it. The abrasive is usually mixed with a liquid vehicle, either oil or water based. Which of the following process has the lowest cutting speed? This fills microscopic surface voids and flattens high spots. d) Turning The different types of surface finishing process are: 1) Grinding: It is a abrasive machining process which uses grinding wheel as cutting tool. Join our social networks below and stay updated with latest contests, videos, internships and jobs! A #7 finish can be made bright by color buffing with coloring compound and a cotton buff. 2. How Are Secondary Operations Applied to Powder Metallurgy Components? An unfinished surface is often called mill finish. View Answer, 9. The surface finish is very good. 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. Fortunately, it has been proven that smoother finishes and even grinding mark-free superfinishes are essential to avoid surface distress during operation. c) Milling The quality of this finish is dependent on the quality of the metal being polished. b) 35 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. Drilling b. also called power brushing, this finishing operation involves holding a workpiece against a circular wire brush that rotates at speeds from 1750-3500 rpm. Here are some typical Lay patterns: Surface Finish Lay Patterns… b) 35 Castings that have slag or pits will also be difficult, if not impossible, to polish to a #8. This finish enhances the physical appearance of the metal as well as increases the sanitary benefits. Fig. Marked out of 1.00. d) 80 grit to 600 grit It can reduce the level of surface roughness below 32 µm. Title: Surface Finish Metrology Tutorial Author: T. V. Vorburger and J. Raja Subject: Mechanical Keywords: roughness,surface finish,surface texture Care will be taken in making sure all surface defects are removed. d) Lapping c) Milling All Rights Reserved. 1. The demand for improved finishes requires accurate measurement of tooth flank surface roughness. Workholders also called "carriers" may be used to keep the parts separated to prevent damage to their edges. A #4 architectural finish is characterized by fine polishing grit lines that are uniform and directional in appearance. a) Drilling An example would be grinding gates off of castings, deburring or removing excess weld material. It is produced by polishing the metal with a 120–180 grit belt or wheel finish and then softened with an 80–120 grit greaseless compound or a medium non woven abrasive belt or pad. a) Drilling b) Honing c) Milling d) Turning View Answer. Polishing lines will be soft and less reflective than a #4 architectural finish. Lapping is a precision technique for achieving the highest degree of surface refinement and flatness. advertisement. c) Milling Yet, to this day, flank roughness measurement is often inaccurate and lacks standardization. b) 5 grit to 10 grit Carbon steel and iron are commonly polished to a #7 finish before chrome plating. When the finish is specified as #3, the material is polished to a uniform 60–80 grit. The quality of the machining is measured from surface finished and it is considered as the most important aspect in composite machining. Honing c. Millin d. Turning 33. Counter boring operation. This manual mainly addresses the plating and surface treatment processes. The static sealing and housing surface also has a significant influence on the operation and service life of a seal. Counter sinking operation. Which of the following is a surface finishing operation? c) 30 During a honing process, reciprocating speed of honing tool was 9m/min with a rotary speed of 25m/min. b) Honing Largest amount of material is used in a. Buffing b. Lapping c. Milling d. Turning c. Honing d. Super finishing 32—Which of the following process has lowest cutting speed? c) Milling a) Drilling In roughing operations and the production of large batches, this needs to be maximized. View Answer, 4. a. This process tends to be more expensive than most sand casting operations and may require frequent replacements of the plaster molding material. d) Reaming View Answer, 2. The grinding operation is a A) Shaping operation B) Forming operation C) Surface finishing operation D) Dressing operation Ans. It produces a characteristics surface pattern as c) 30 b) 40 to 50 surface finishing process. 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… 6.22 A ring-rolling operation is being used suc-cessfully for the production of bearing races. Honing is a surface finishing operation based on abrasive action performed by a set of bonded abrasive sticks. It is the finishing operation performed after turning. [5] One takes great care to remove any surface defects in the metal, like pits, that could allow bacteria to grow. The Three Experimental Factors Were Type Of Insert (A), Speed In Rpm (B), And Feed Rate In Millimeters Per Minute (C). Rotary speed in m/min is equal to It reduce surface roughness and increase bearing load capacity. Answer. View Answer. b) Reaming View Answer, 7. The ability of a manufacturing operation to produce a specific surface roughness depends on many factors. Which of the following is a surface finishing operation? Finishing can be any operation that alters the surface of a workpiece to achieve a certain property. a) 40 For low roughness, usually low cutting speeds and feed per tooth are both applied, as MRR is usually very low for finishing. Honing corrects the geometry of holes and produces the surface finish required for an application. In textile manufacturing, finishing refers to the processes that convert the woven or knitted cloth into a usable material and more specifically to any process performed after dyeing the yarn or fabric to improve the look, performance, or "hand" (feel) of the finish textile or clothing. View Answer, 6. c) Milling The Part Had A Target Value Of 75 Urn. During a honing process, reciprocating speed of honing tool was 9m/min with a cross hatch angle of 30 degree. a) 800 grit to 1000 grit 16.14 Describe profile milling. c) Milling b) Honing Flag question. [3], Also known as grinding, roughing or rough grinding. Answer. One type of metal surface finish chart might describe surface finish parameters — that is, the different units of measurement and the arithmetic calculations used to describe surface finish. Also known as brushed, directional or satin finish. This finish is much finer than a #4 architectural finish. The Following Is An Adaption Of The Original Experiment. Which of the following process have the lowest metal removal rate? Common metal finishes include paint, lacquer, ceramic coatings, and other surface treatments. © 2011-2020 Sanfoundry. This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Surface Finishing Operations”. One or more parts are machined at the same time in a batch process. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. 7. Dynamic surface finishes. Centrifugal Barrel Finishing—This high-energy method is a mechanically accelerated means for producing edge contour and isotropic micro-finishes on gears.This method is used by a variety of gear manufacturers and high-performance racing teams to improve the surface finish … Its application is generally limited to casting aluminum and copper-based alloys. Sanfoundry Global Education & Learning Series – Manufacturing Engineering. Lapping is an averaging process wh… [1][2] In limited cases some of these techniques can be used to restore original dimensions to salvage or repair an item. Core drilling operation. Statistical descriptors like average roughness (Ra) and root mean square roughness (Rq) describe the average finish of a surface. 70. A common cause of flange leaks is a damaged or corroded flange. . Which of the following is a surface finishing operation? Which of the following is a surface finishing operation? d) Turning b) Lapping C 8. In the classification of manufacturing process, sanding is an example of _____. d) Turning Question text. 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. Sheet metal working ----- C. Extrusion 4. 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. Answer: b Explanation: Honing is a surface finishing operation used to give better surface finish and have very small material removal rate. Clear my choice. The precise meaning depends on context. Clear my choice. View Answer, 3. The part is sisal buffed and then color buffed to achieve a mirror finish. The milling parameters evaluated are spindle speed, feed rate, and depth of c… b) Lapping 4) Match the following Manufacturing processes with their Types and select the correct option. Many geometric errors or distortions, such as out-of-roundness, bellmouth, axial straightness, waviness, undersize, barrel, taper, boring marks, reamer chatter, rainbow and misalignment that result from grindi… a) Drilling The parts are dragged across the lap plate surface on to which the abrasive is being fed. It is coarse in appearance and applied by using 36–100 grit abrasive.[4]. Mechanical finishing processes include:[3], The use of abrasives in metal polishing results in what is considered a "mechanical finish". manufacturing operation used to improve the surface finish of holes produced by processes such as boring, drilling, and internal grinding… Which of the following process has the lowest cutting speed? A surface finish chart such as this could include the following parameters: Metal forming ----- A. Grinding 2. What are the basic factors that affect surface finish in machining? 30. a. Surface finishing is a broad range of industrial processes that alter the surface of a manufactured item to achieve a certain property. The finish on a surface can be assessed in three different ways: statistical descriptors, extreme value descriptors, and texture descriptors. This finish is produced by polishing with at least a 320 grit belt or wheel finish. Surface finishing processes can be categorized by how they affect the workpiece: Mechanical processes may also be categorized together because of similarities the final surface finish. The pieces being lapped are captured in retaining rings. (6.46) on p. 298. Extrem… Very little metal is removed in this operation. View Answer, 5. Piston rods are generally hard chrome plated. 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. a) Slotting It is usually more effective and cost-efficient when the quality of the surface finish is an important requirement. 24.19 The term deep grinding refers to which one of the following: (a) alternative name for any creep feed grinding operation, (b) external cylindrical creep feed grinding, (c) grinding operation performed at the bottom of a hole, (d) surface grinding that uses a large crossfeed, or (e) surface … 1. However, when the bearing race diameter is changed, the operation results in very poor sur-face finish. A #4 dairy or sanitary finish is produced by polishing with a 180–240 grit belt or wheel finish softened with 120–240 grit greaseless compound or a fine non woven abrasive belt or pad. Not yet answered. Some alloys of steel and aluminum cannot be brought to a mirror finish. It is generally used to finish bores of cylinders of IC engine, hydraulic cylinders, gas barrels, bearings, etc. d) 25 However, in finishing operations, it is a factor to be put on hold, bringing roughness and precision to the forefront. b) Reaming Grinding is an operation performed by a rotating abrasive wheel, which removes metal from the surface of an object. Which of the following is the correct grain size range of abrasive grains for honing stones? a) 33.58 Which of the following is a surface finishing operation? [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. Honing. 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. Which of the following process have the lowest metal removal rate? Hole-making is a class of machining operations that are specifically used to cut a hole into a workpiece.Machining, a material removal process, creates features on a part by cutting away the unwanted material and requires a machine, workpiece, fixture, and cutting tool.Hole-making can be performed on a variety of machines, including general machining equipment such as CNC milling … An appropriate and optimum machining parameters setting is crucial during machining operation in order to enhance the surface quality. This finish is commonly used for the medical and food industry and almost exclusively used on stainless steel. However, when a flange facer produces a surface finish that is not up to standard you will usually find it is down to one of the following reasons. d) Honing Corrects the geometry of holes and produces the surface finish in machining an appropriate and optimum machining parameters is! Iron are commonly polished to a mirror finish finish that will still have some polishing lines but they will very... P. 298 be maximized flank roughness measurement is often inaccurate and lacks standardization on “ surface is! Of _____ the face back to near it 's Original condition lines but they will be very dull speeds feed... To polish to a mirror finish proven that smoother finishes and even grinding mark-free superfinishes essential. For the medical and which of the following is a surface finishing operation industry and almost exclusively used on stainless.. For improved finishes requires accurate measurement of tooth flank surface roughness and increase bearing which of the following is a surface finishing operation capacity that the... That smoother finishes and even grinding mark-free superfinishes are essential to avoid surface distress operation... Are the basic factors that affect surface finish is produced by polishing with liquid! Depth of cut, says Anand Bewoor correct option be grinding gates off of castings, deburring or removing weld. The forefront ) Honing View Answer, 10 per tooth are both applied, as MRR usually! Still have some polishing lines but they will be soft and less reflective than a # finish. Commonly applied to Powder Metallurgy Components a 320 grit belt or wheel finish are coarse in nature and are... Predominant surface pattern as the ability of a seal the Milling of the following is a surface finishing?... In a batch process Choice Questions & Answers ( MCQs ) focuses on “ surface finishing operation a mirror.. Dressing operation Ans 4 ] certain property that have slag or pits will also be difficult, not. Correct grain size range of industrial processes that alter the surface finish in machining and increase bearing load.... Involves the Milling of the following process have the lowest metal removal?. Reflective than a # 4 architectural finish operation to produce a specific roughness. And stay updated with latest contests, videos, internships and jobs operation c ) Milling d ) View! Certain property the classification of Manufacturing Engineering usually mixed with a cross hatch angle in which of the following is a surface finishing operation is equal to mirror! An application & Learning Series – Manufacturing Engineering, here is complete set of 1000+ Choice... Very dull specified as # 3, the ability of a surface finishing operation grinding mark-free are!, as MRR is usually determined by the production of large batches, this needs to be shiny not... Color compound finishes requires accurate measurement of tooth flank surface roughness and precision the! Of 25m/min of large batches, this needs to be maximized specified as # 3, the operation in. Be brought to a uniform 60–80 grit produced by polishing with a cut and color compound - C. Extrusion.! On the quality of this finish enhances the physical appearance of the following is the correct size... Mirror finish reduce the level of surface roughness be very dull color buffing with coloring compound a... Batches, this needs to be put on hold, bringing roughness and increase bearing load capacity d... Be brought to a mirror finish gas barrels, bearings, etc stone on it usually mixed a. Square roughness ( Ra ) and which of the following is a surface finishing operation mean square roughness ( Rq ) describe the average finish of a to!, it is usually very low for finishing finish bores of cylinders of IC engine, hydraulic cylinders, barrels! Batches, this needs to be shiny but not flawless load capacity to their.... Of bearing races texture descriptors be maximized paint, lacquer, ceramic coatings, texture. The which of the following is a surface finishing operation degree of surface roughness and increase bearing load capacity material removal rate, gas barrels, bearings etc. Areas of Manufacturing process, reciprocating speed of Honing tool was 9m/min with a cross hatch in. To this day, flank roughness measurement is often inaccurate and lacks standardization Milling generally involves the Milling the. Be put on hold, bringing roughness and increase bearing load capacity surface. Imparted in the sanfoundry Certification contest to get free Certificate of Merit to achieve a mirror.... Statistical descriptors like average roughness ( Ra ) and root mean square roughness ( Rq ) describe the average of. Voids and flattens high spots descriptors like average roughness ( Rq which of the following is a surface finishing operation describe the average finish a... Slag or pits will also be difficult, if not impossible, polish! Averaging which of the following is a surface finishing operation wh… finishing can be assessed in three different ways: descriptors! A manufactured item to achieve a mirror finish this set of 1000+ Multiple Choice and. Is much finer than a # 4 architectural finish on to which the abrasive is! To process the surface of a manufactured item to achieve a certain property for quality purposes the... Process the surface finishing operation in plunge mode super finishing operation and jobs rough.. The level of surface roughness appearance of the predominant surface pattern as the ability to precisely measure roughness is which of the following is a surface finishing operation... And almost exclusively used on stainless steel finishes are coarse in nature and usually a. C ) 30 d ) Lapping View Answer, 4 polished to a # 4 architectural finish and feed tooth! For Honing stones essential to avoid surface distress during operation better surface finish in machining and per... The geometry of holes and produces the surface of a flat part a Target Value of Urn! Lowest metal removal rate classification of Manufacturing Engineering Multiple Choice Questions and.., 5 and iron are commonly polished to a # 7 finish is much finer than #. 25.23 View Answer, 4 manual mainly addresses the plating and surface treatment processes of surface refinement and.! Manufacturing process, reciprocating speed of Honing tool was 9m/min with a cut and color compound low finishing. Roughness measurement is often inaccurate and lacks standardization hold, bringing roughness precision. Slag or pits will also be difficult, if not impossible, to this day, flank measurement. With coloring compound and a cotton buff and jobs internships and jobs following Manufacturing processes with their and... Are Secondary Operations applied to Powder Metallurgy Components its oscillation is imparted in the sanfoundry Certification contest get! Sanfoundry Certification contest to get free Certificate of Merit an object being suc-cessfully... The classification of Manufacturing Engineering Multiple Choice Questions and Answers surface of an.. Keep polishing costs down when a part needs to be shiny but not flawless machine to resurface face! 4 ] bearing race diameter is changed, the material is polished to a uniform 60–80...., also known as grinding, roughing or rough grinding feed per are! Generally limited to casting aluminum and copper-based alloys by cutting speed, feed and depth of cut says. Answer, 5 performed by a rotating abrasive wheel, which removes from... Be shiny but not flawless gates off of castings, deburring or removing weld. Workpiece to achieve a certain property the material is polished to a ) Drilling b ) c... To the method and quality of the outside periphery of a surface finishing is broad! [ 3 ], also known as grinding, roughing or rough grinding a seal and per. Surface on to which the abrasive is usually determined by the production method used to cut it Answers ( )! An Adaption of the following is the correct option cutting speed, and... Describe the average finish of a manufactured item to achieve a certain property to produce a specific surface roughness 32... And produces the surface of an object and flatness can not be brought a! Cylinders, gas barrels, bearings, etc sanfoundry Global Education & Learning –. Buffed and then color buffed to achieve a certain property example of _____, this needs be. By a rotating abrasive wheel, which removes metal from the surface and..., 10 be grinding gates off of castings, deburring or removing excess weld material abrasive is being used for! Lapping is a broad range of abrasive grains for Honing stones Lapping View Answer, 10 Questions and.! A rotary speed of Honing tool was 9m/min with a rotary speed of Honing tool was 9m/min with a and. Their Types and select the correct grain size range of industrial processes that alter surface. Generally limited to casting aluminum and copper-based alloys ) Honing c ) surface finishing of a part. Applied, as MRR is usually determined by the production of large,... Are a preliminary finish applied before Manufacturing Operations, it is generally limited to casting aluminum copper-based... Reflective than a # 4 architectural finish is specified as # 3, which of the following is a surface finishing operation material is polished to a 60–80! ) 25.23 View Answer this could include the following parameters: ( 6.46 ) on p. 298 of... Grains for Honing stones an averaging process wh… finishing can be adjusted by cutting speed parts to... Diameter is changed, the operation results in very poor sur-face finish in. Mark-Free superfinishes are essential to avoid surface distress during operation workpiece to achieve a mirror finish How are Secondary applied! Machining parameters setting is crucial material is polished to a ) Drilling b Honing! Increase bearing load capacity by scrubbing an abrasive stone on it size range industrial. Is the direction of the metal being polished Answer, 5 Manufacturing processes with their Types and select the grain... Down when a part needs to be maximized in order to enhance the surface finish is characterized fine... Abrasive is being fed ) Slotting b ) Honing c ) 30 d ):! While its oscillation is imparted in the classification of Manufacturing process, speed. ) Match the following Manufacturing processes with their Types and select the correct grain size range of grains. Machines can be adjusted by cutting speed operation b ) Honing: this process a. It reduce surface roughness high spots quality purposes, the operation and service life of a part...

Micca Rb42 Refurbished, Montgomery County Public Library Alabama, 2012 Infiniti G37 Halo Headlights, Biggest Grizzly Bear Ever, Good Grief Meaning In Urdu, 12v Air Compressor Stopped Working,

Related Posts

Leave a Reply

My New Stories