Answered: 28. The most commonly used grinding…

28. The most commonly used grinding wheels are made from Select one: a.SILICON CARBIDE b.DIAMOND C.ALUMINUM OXIDE d.BORON CARBIDE

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter7: Grinding

Section7.2: Grinding Wheels For Precision Grinding

Problem 5RQ: What superabrasive is a good choice for grinding carbide?

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Safety guidelines are the set of rules and codes that must be followed in the workplace for the occupational safety of workers, the machines, and the equipment that are present inside the workshop premise. There are many unsafe conditions and hazardous materials inside the workshop that makes prey for certain risk factors associated with health conditions. Extreme safety precautions must be taken inside the work area just like the precautions and practices that are been followed for Corona Virus Disease 2019 (COVID-19). People can also educate themselves by joining various health programs and camps. These will provide them with the necessary skills and knowledge about safety awareness. Occupational Safety and Health Administration (OSHA) thrives to create a safe and healthy environment for the workers working in the industries and provides them with proper education and training.

Question

22 MENG201 Mechanical workshop practice

28. The most commonly used grinding wheels are made from
Select one:
a.SILICON CARBIDE
b.DIAMOND
C.ALUMINUM OXIDE
d.BORON CARBIDE
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Branch of science that deals with the stationary and moving bodies under the influence of forces.

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What wheel shapes are commonly used for surface and cylindrical grinding?
Depth-of-cut range for surface grinding is: a. 0.010"0.100" b. 0.0001"0.0002" c. 0.0001"0.003" d. 0.00001"0.00005"
Answer the following questions by circling True or False. 1. Creep feed grinding is an operation used for large material as compared to the conventional grinding operation, and it uses hard grinding wheels and small depths of cut. 2. For sawing softer materials, fine pitch blades are used since they produce long chips, while coarse pitch blades are used for sawing harder materials. 3. The machined surface with high finish should be used as the clamping surface to guarantee machining accuracy 4. Since the fixture elements are reusable, the overall cost for modular fixturing is less. 5. Using the slip gauges can obtain the exact value of the part dimensions. ( ) ()
Types of grain action in grinding that encounter deformed surface without removing any material is known as, O a. Plowing O b. Rubbing OC. Grinding O d. Honing O e. Cutting
5. Types of Grinding Wheel Machines and their outputs. (atleast 3)
In a surface grinding operation performed on a 6150 steel workpart (annealed, approximately 200 BHN), the designation on the grinding wheel is C-24-D-5-V. Wheel diameter =178 mm and its width= 25 mm. Rotational speed = 3000 rev/min. Infeed = 0.05 mm per pass, crossfeed = 12.5 mm, and workpiece speed = 6 m/min. This operation has been a source of trouble right from the beginning. The surface finish is not as good as the 0.4 µm specified on the part print, and there are signs of metallurgical damage on the surface. In addition, the wheel seems to become clogged almost as soon as the operation begins. In short, nearly everything that can go wrong with the job has gone wrong. (a) Determine the rate of metal removal when the wheel is engaged in the work. (b) If the number of active grits per cm? = 30, determine the average chip length and the number of chips formed per time. (c) What changes would you recommend in the grinding wheel to help solve the problems encountered? Explain why you…
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11) An internal bore is ground to 100 mm, removing 0.3 mm stock. To accomplish this, a grinding wheel 80% of the finished size is used. The wheel is dressed every 15 cycles because it is observed that the radial wheel wear is 0.05 mm on average. Assume wheel and part widths are equal. a. What dressing depth would you recommend and why? b. Calculate the G-ratio of this operation.
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What superabrasive is a good choice for grinding carbide?
15. The follows are several cylindrical grinding operations. In common, should be the most accurate one. A. traverse grinding B. plunge grinding C. profile grinding
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