Performance Of Grinding Wheel depends upon selected abrasive, grain size, structure and bond type. Discuss effect of each.

1. Student from
Government Engineering
College Bhavnagar
Presentation on topic
from
Manufacturing Process Part-1

2. Details of student and presentation
Name.Dhandhukiya Vijaykumar J
Enrollment No.150210119025
Year & Semester. Second year & 3rd Semester
Presentation from Chapter: Grinding
Topic. Performance Of Grinding Wheel depends upon selected abrasive, grain size,
structure and bond type. Discuss effect of each.

3. Grinding Wheel

4. Types of
Grinding
Wheel

5. Characteristics of grinding wheel
There are five characteristics of a cutting wheel: Abrasive material,
grain size, wheel grade, structure, and bond type. They are indicated
by codes on the wheel's label.
Structure Bond TypeGrain size
Abrasive
Material

6. how depending on Abrasive Material?
1
The abrasive aggregate is selected according to the
hardness of the material being cut.
1. Aluminum oxide (A)
2. Silicon carbide (S)
3. Ceramic (C)
4. Diamond (D, MD, SD)
5. Cubic boron nitride (CBN)

7. Grinding wheels with diamond or CBN grains
are called superabrasives. Grinding wheels
with aluminum oxide (corundum), silicon
carbide, or ceramic grains are called
conventional abrasives.

8. how depending on grain size?
From 8 (coarsest) to 1200 (finest), determines the
average physical size of the abrasive
grains in the wheel. A larger grain will cut freely,
allowing fast cutting but poor surface
finish. Ultra-fine grain sizes are for precision finish
work.

9. Grain Structure, and fracture pattern of Grinding wheel

10. ● The size of Abrasive grain required in a Grinding
wheel depends on the amount of material to be
removed, desired finishing, and the hard ness of
material being ground.
● In general coarse wheel are used for fast removal
● Fine graned wheels are used for soft, ductile Material

11. how depends on structure(grain spacing)?
Spacing or structure, from 1 (densest) to 16 (least dense).
Density is the ratio of bond and
abrasive to air space. A less-dense wheel will cut freely,
and has a large effect on surface
finish. It is also able to take a deeper or wider cut with
less coolant, as the chip clearance
on the wheel is greater.

12. soft,tough and ductile materials and heavy cuts require
an open structure where as hard and brittle
materialsand finishing cuts require a dense structure

13. how depending on the grade?
The terms 'grade’ as applied to grinding wheel refers to
tenacity or hardness with which the bond hold the cutting
point or Abrasive grains in place. It does not refers to
hardness of Abrasive grain. The grade indicate in the
bonds and process by English alphabets.

14. A denotes softest
Z denotes hardest grade.
As the grade is soft grade then it is used for Grinding the soft Material
If grade is hardest grade then it can be used for grinding hard material
Soft grade- A,B,C,D,E,F,G,H
Medium gade-I,J,K,L,M,N,O,P
Hard grade-Q,R,S,T,U,V,W,X,Y,Z

15. Thank
you