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You need to login to ask any Questions from chapter grinding-surface-finishing-operations-and-unconventional-machining-processes of Manufacturing-engineering-I

Chapter:

grinding-surface-finishing-operations-and-unconventional-machining-processes

1. For practical honing conditions, cross hatch angle in degrees is generally taken in range of

20 to 40 40 to 50 50 to 60 10 to 15

20 to 40

Cross hatch angle is generally taken from 20 degrees to 40 degrees.

Hint Answer

2. Which of following represents correct symbol of epoxy bond in a specification of grinding wheel?

V R P S

R

‘P’ represents for epoxy bond. Fifth place of ISO designation of grinding wheel represents type of bond.

Hint Answer

3. Grinding wheel specified as “C 8 K 5 R 17” in ISO designation. What is type of bond present in grinding wheel?

Vitrified Rubber Shellac Epoxy

Rubber

Fifth place of ISO designation of grinding wheel represents a type of bond and “R” represents rubber.

Hint Answer

4. Grinding wheel is specified as “A 600 K 5 B 17”. Grain size of a wheel will be

Coarse Medium Fine Very Fine

Very Fine

‘600’ represents grain size, which comes under very fine grain size. Second value in specification represents grain size.

Hint Answer

5. Material removal rate of grinding process in comparison to material removal rate in facing on a la is

Small Large Same Can’t say about material removal rate

Small

Material removal rate in grinding process is very small. Hence grinding is mostly use as a finishing process. Only small portion of abrasives are involved in grinding process and hence has less material removal rate.

Hint Answer

6. Which of following represents correct symbol of rubber bond in a specification of grinding wheel?

V R B S

R

‘R’ represents for rubber bond. Fifth place of ISO designation of grinding wheel represents type of bond.

Hint Answer

7. During a honing process, reciprocating speed of honing tool was 9m/min with a cross hatch angle of 30 degree. Rotary speed in m/min is equal to

33.58 35 30 25.23

33.58

tan(X) = (Reciprocating speed in m/min)/ (Rotary speed in m/min). Cross hatch angle = 2*X, where ‘X is cross hatch angle.

Hint Answer

8. A grinding wheel is specified as “A 5 K 5 R 17”. Which of following is correct about this grinding wheel?

Very fine grains Open structure Aluminum oxide abrasive Coarse grain

Aluminum oxide abrasive

First place of ISO designation of grinding wheel represents grain type and “A” represents aluminum oxide.

Hint Answer

9. Which of following is correct range for grain number of grinding wheel for very fine grains?

220-600 80-180 30-60 10-24

220-600

For very fine grains, grain number ranges from 220 to 600.

Hint Answer

10. Loss in sharpness of grinding wheel due to presence of chips in gaps of grains is termed as

Loading Glazing Dressing Trueing

Loading

Loading decrease sharpness of grinding wheel, when foreign material comes in between free space of wheel.

Hint Answer

Nexttt

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Topics

This Chapter grinding-surface-finishing-operations-and-unconventional-machining-processes consists of the following topics

Grinding

Surface Finishing Operations and Unconventional Machining Processes

For practical honing conditions, cross hatch angle in degrees is generally taken in range of

Which of following represents correct symbol of epoxy bond in a specification of grinding wheel?

Grinding wheel specified as “C 8 K 5 R 17” in ISO designation. What is type of bond present in grinding wheel?

Grinding wheel is specified as “A 600 K 5 B 17”. Grain size of a wheel will be

Material removal rate of grinding process in comparison to material removal rate in facing on a la is

Which of following represents correct symbol of rubber bond in a specification of grinding wheel?

During a honing process, reciprocating speed of honing tool was 9m/min with a cross hatch angle of 30 degree. Rotary speed in m/min is equal to

A grinding wheel is specified as “A 5 K 5 R 17”. Which of following is correct about this grinding wheel?

Which of following is correct range for grain number of grinding wheel for very fine grains?

Loss in sharpness of grinding wheel due to presence of chips in gaps of grains is termed as

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