(a) Describe briefly the principle of : (i) (ii) MIG Welding Resistance welding (b) Outline four types of welded joints that are commonly produced with arc welding and state their possible advantages and disadvantages and where they are employed. (c) Table 1 below shows the cutting speed for some common materials and the feed rates for various milling cutters. Material Feed per tooth (mm) Cutting Speed m/min Face Mill Slab Mill End Mill Aluminium 70 – 100 0.2 - 0.8 0.2 - 0.6 0.1-0.4 Brass 35 – 50 0.15 – 0.6 0.15 - 0.5 0.07 - 0.3 Bronze 50 – 70 0.07 - 0.3 0.2 - 0.6 0.1-0.4 Cast Iron 20 - 35 0.1-0.4 0.1 - 0.3 0.05 – 0.2 Copper Mild Steel 35 – 45 0.1-0.4 0.1- 0.3 0.05 – 0.2 30 - 40 0.1-0.4 0.1-0.3 0.05 – 0.2 Thermo-setting 20 -30 0.15 – 0.6 0.15 - 0.5 0.07 - 0.3 plastic Table 1 Using relevant information from table 2, calculate the time taken to complete a 300 mm long cut on an aluminium plate using a 75 mm diameter slab mill with 6 teeth.

(a) Describe briefly the principle of : (i) (ii) MIG Welding Resistance welding (b) Outline four types of welded joints that are commonly produced with arc welding and state their possible advantages and disadvantages and where they are employed. (c) Table 1 below shows the cutting speed for some common materials and the feed rates for various milling cutters. Material Feed per tooth (mm) Cutting Speed m/min Face Mill Slab Mill End Mill Aluminium 70 – 100 0.2 - 0.8 0.2 - 0.6 0.1-0.4 Brass 35 – 50 0.15 – 0.6 0.15 - 0.5 0.07 - 0.3 Bronze 50 – 70 0.07 - 0.3 0.2 - 0.6 0.1-0.4 Cast Iron 20 - 35 0.1-0.4 0.1 - 0.3 0.05 – 0.2 Copper Mild Steel 35 – 45 0.1-0.4 0.1- 0.3 0.05 – 0.2 30 - 40 0.1-0.4 0.1-0.3 0.05 – 0.2 Thermo-setting 20 -30 0.15 – 0.6 0.15 - 0.5 0.07 - 0.3 plastic Table 1 Using relevant information from table 2, calculate the time taken to complete a 300 mm long cut on an aluminium plate using a 75 mm diameter slab mill with 6 teeth.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter10: Gas Metal Arc Welding Equipment, Setup, And Operation

Section: Chapter Questions

Problem 1R: Why is usage of the term GWW preferable to MIG for gas metal arc welding?

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