Test: Metal Cutting & Tool Materials - 1

# Test: Metal Cutting & Tool Materials - 1 - Mechanical Engineering

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Test: Metal Cutting & Tool Materials - 1 - Question 1

### In an orthogonal cutting process, rake angle of the tool is 220 and friction angle is 260. Using Merchant’s shear angle relationship, the value of shear angle will be

Detailed Solution for Test: Metal Cutting & Tool Materials - 1 - Question 1

As per Merchant’s analysis:

Test: Metal Cutting & Tool Materials - 1 - Question 2

### During an orthogonal machining operation on mild steel, the results obtained are: What is the coefficient of friction between the tool and the chip?

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Test: Metal Cutting & Tool Materials - 1 - Question 3

### Match the List-I (Cutting tool material!) with List-II (Value of ‘n’ in equation, VTn = C):

Test: Metal Cutting & Tool Materials - 1 - Question 4

The approximate value of the tool life exponent 'n’ of cemented carbide tool is

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Test: Metal Cutting & Tool Materials - 1 - Question 5

Which of the following work material has highest machining constant?

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Test: Metal Cutting & Tool Materials - 1 - Question 6

In an orthogonal cutting process, rake angle of the tool is 200 and friction angle is 240. Using Lee's and Shaffer's shear angle, the value of shear angle will be

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Test: Metal Cutting & Tool Materials - 1 - Question 7

Using the Taylor equation for tool life and letting n = 0.5 and C= 400, calculate the percentage increase in tool life when the cutting speed is reduced by 50%.

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Test: Metal Cutting & Tool Materials - 1 - Question 8

In material removal process, chipping is used to describe

Test: Metal Cutting & Tool Materials - 1 - Question 9

Which isotherms have severe temperature gradient of the following temperature distribution in the cutting zone?

Detailed Solution for Test: Metal Cutting & Tool Materials - 1 - Question 9

Severe temperature exists at the tool-chip interface.

Test: Metal Cutting & Tool Materials - 1 - Question 10

Optimum cutting speed for minimum cost (Vcmin) and optimum cutting speed for maximum production rate (Vr max) have which one of the following relationship?

Detailed Solution for Test: Metal Cutting & Tool Materials - 1 - Question 10

Minimum cost implies for minimum tool wear. Maximum production rate means higher speed irrespective of tool wear.
∴ Vr max < Vc min

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