Welding symbols on drawings - .:YUSUF MANSUROGLU - P

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As an aid to location, intermittent fillet welds may be graphically located by hatching as shown in Fig. 11.4. This method is described in the AWS standard and illustrated in the ISO standard. It is a useful aid to the interpretation of welding <strong>symbols</strong>. 5 16 1 – 3 1 – 3 11.4 Hatching showing location of fillet welds (AWS) (dimensions are in inches). 5 16 Dimensions 3 33
12 Spot and seam welds Resistance spot welds Resistance spot welding requires access to both sides of the joint. The weld symbol is centred on the reference line (see Fig. 12.1). 34 <strong>Welding</strong> <strong>symbols</strong> on drawings ISO AWS Symbols (n) d n (e) d e 12.1 Symbolisation of a resistance spot weld. Other details of the welding symbol shown in Fig. 12.1 are compared in Table 12.1. Table 12.1 Symbols for dimensions and spacing of resistance spot welds Details ISO AWS Spot diameter at interface d d Number of welds n (n) Pitch (e) e An example of the application of the welding symbol is shown in Fig. 12.2. Under the heading ‘Strength’, AWS A2.4-98 specifies that the strength of a spot weld shall be indicated by a number quoting pounds or newtons placed in front of the weld symbol. The strength of a spot weld is related to its size and it is questionable whether mechanical properties should form part of a welding symbol. The purpose of this option and for whom the information is intended are not clear. 6 3 75 Illustration 1 4 1 4 d = spot diameter n = number of welds e = pitch ISO AWS (5) 6 5 (75) 1/4 3 12.2 Examples of resistance spot weld <strong>symbols</strong>. ISO dimensions are in millimetres; AWS dimensions are in inches.
Page 2 and 3: Welding sy
Page 4 and 5: Welding sy
Page 6 and 7: Contents Introduction vii Scope ix
Page 8 and 9: Introduction Symbols for indicating
Page 10 and 11: Scope This book is an updated versi
Page 12 and 13: Terms and definitions Some terms an
Page 14: ponent shape or by the use of a pro
Page 17 and 18: Figure 1.1(b) shows a single fillet
Page 19 and 20: In the ISO system a weld on the arr
Page 21 and 22: 3 Welding
Page 23 and 24: terms and symbols
Page 25 and 26: (a) (b) (c) (d) (e) (f) 10
Page 27 and 28: (a) (b) (c) (d) 12 Welding<
Page 29 and 30: 7 Location of symbols</stro
Page 31 and 32: 8 Supplementary symbols</st
Page 33 and 34: If the weld is to be finished by an
Page 35 and 36: Other supplementary symbols
Page 37 and 38: Peripheral welds (weld all round) F
Page 39 and 40: 9 Dimensions 1 Butt/groove welds In
Page 41 and 42: Double butt/groove welds often have
Page 43 and 44: 10 Dimensions 2 Fillet welds - tran
Page 45 and 46: Unequal leg length fillet welds If
Page 47: Intermittent fillet welds are used
Page 51 and 52: Seam welds The notation for the siz
Page 53 and 54: of studs to the right. The number o
Page 55 and 56: 15 Process identification In the IS
Page 57 and 58: 16 Non-destructive testing
Page 59 and 60: 17 Exercises On the following pages
Page 61 and 62: Exercise 3:Tank Figure 17.3 shows a
Page 63 and 64: Exercise 1 solution ISO AWS ISO A1
Page 65 and 66: Sketches �F , �G and �H show
Page 67 and 68: of whether it is to be achieved in
Page 69 and 70: dure would be to attach the channel

Welding symbols on drawings - .:YUSUF MANSUROGLU - P

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