Grinding

Question 1

Who published the video?

Answer 1

Society of Manufacturing Engineers

Question 2

How is grinding defined in the video?

Answer 2

A material removal and surface generating process used to shape and finish metal components or non metals

Question 3

How many phases are there in grinding and what are they?

Answer 3

2
Roughing phase - to remove most of the material
Finishing phase - to resolve any distortion and improve surface finish

Question 4

For the first grinding process how many hoses for lubricant?

Answer 4

3

Question 5

What are the two processes shown in the first video section?

Answer 5

Cylindircal Grinding & Lapping

Question 6

In the ABRASIVE AND GRINDING WHEEL section what is stated for grinding to be successful?

Answer 6

Harder than workpiece, Shock Resistant, Heat Resistant, and Capable of Fracturing/Friable

Question 7

What natural abrasives have been replaced?

Answer 7

Quartz &Emerey

Question 8

What abrasive is used in 3/4 of abrasives?

Answer 8

Aluminum Oxide

Question 9

What is th next common abrasive apart from aluminum oxide?

Answer 9

Silicon Carbide

Question 10

What is Silicon Carbide used for?

Answer 10

Softer Metals, Non-Ferrous Metals, and High Density Materials like ceramics and cemented carbide

Question 11

What are the super abrasives used in 5% of grinding applications?

Answer 11

Cubic Boron Nitride & Diamond which are the hardest of all materials

Question 12

What is CBN used to grind?

Answer 12

Hard Ferrous Materials

Question 13

What is diamond used to grind?

Answer 13

Non-Ferrous materials and Non-metals

Question 14

What are the types of bindiers that hold abrasive grain?

Answer 14

Vitrified Bonds (Glass), Organic Bonds (Rubber), Metal and Single Layer Bond (Super abrasives)

Question 15

What happens if a wheel’s bond is too hard?

Answer 15

Wheel will wear slowly, fail to release dull cutting edges, cut inefficiently and cause overheating

Question 16

What happens if the bond is too weak?

Answer 16

Grains are lost too soon and wheel wears to quickyl/uneconomically

Question 17

What happens when chips are not removed but retained what is this called?

Answer 17

Glazing

Question 18

What does porosity between grains do?

Answer 18

Provide coolant retention and chip clearance

Question 19

What are open wheels mainly used for?

Answer 19

Grindng soft materials, large work areas, and for minimizing heat

Question 20

What are dense wheels used for in griding?

Answer 20

Hard meterials and finer finishes

Question 21

What three closely related properties determine how well a wheel will cut?

Answer 21

Grain size, Bond type, and pore space

Question 22

what are the different types of cylindrical wheel shapes shown in the video?

Answer 22

4 types: straight wheel, cylinder wheel, straight cup wheel, and flare cup wheel

Question 23

what are other common types of grinding wheel described in the video?

Answer 23

Centerless wheel, mounted point, and cut-off wheel