1. Types of Welds Butt welds:* Fillet welds:* Spot/Seam welds:*
Plug/Slot welds:*
Edge welds:*
Paidar Quality Eng. Co.
Page 1

2. Types of Joints Butt joints: * T joints: * Lap joints: *
Corner joints:*
Paidar Quality Eng. Co.
Page 2

3. C.J.P & P.J.P
Paidar Quality Eng. Co.

4. آماده سازی ورق هابر اساس نوع ساختار اتصال است که تابع موارد زیر میباشد:
فرایند جوشکاری به کار گرفته شده
هزینه آماده سازی و….
خواص فلز مبنا
مقادیر مجاز انقباض وپیچیدگی درمدت سرد شدن
عمق نفوذ جوش
الزامات خستگی
کاهش تمرکز تنش
کاهش تنش های پسماند
دسترسی برای انجام جوشکاری
نوع بارگذاری
Paidar Quality Eng. Co.

5. Paidar Quality Eng. Co.

6. Paidar Quality Eng. Co.

7. Paidar Quality Eng. Co.

8. Paidar Quality Eng. Co.

9. Paidar Quality Eng. Co.

10. Weld Preparations Weld Preparations Page 4 Angle of bevel* Root face*
Included angle*
Root gap*
Root radius*
Root landing*
Paidar Quality Eng. Co.
Page 4

11. Types of Single Butt Preparation
Single bevel
Single V
Single J
Single U*
Paidar Quality Eng. Co.

12. Types of Double Butt Preparation
Double bevel
Double V
Double J
Double U*
Paidar Quality Eng. Co.

13. Butt Joints A butt welded butt joint* A fillet welded butt joint*
A compound welded butt joint*
Paidar Quality Eng. Co.

14. Welded Joints T Joints A fillet welded T joint* A butt welded T joint*
A compound welded T joint*
Paidar Quality Eng. Co.

15. Welded Joints Closed Corner Joints
A fillet welded Closed Corner joint*
A butt welded Closed Corner joint*
A compound welded Closed Corner joint*
Paidar Quality Eng. Co.

16. Welded Joints Open Corner Joints
An inside fillet welded Open Corner joint*
An outside fillet welded Open Corner joint*
A double fillet welded Open Corner joint*
Paidar Quality Eng. Co.

17. Paidar Quality Eng. Co.

18. Sizing of Fillet Welds Vertical Leg Length* Weld face*
Horizontal Leg Length*
Excess weld metal **
Design throat*
Actual throat*
Paidar Quality Eng. Co.

19. Nominal & Effective Throat Thickness
“a” = Nominal throat thickness
“s” = Effective throat thickness a s
Deep throat fillet welds from FCAW & SAW etc*
Paidar Quality Eng. Co.

20. Concave is preferred for joints subject to fatigue loading
Fillet Weld Profiles
Concave
Mitre
Convex
Concave is preferred for joints subject to fatigue loading
Paidar Quality Eng. Co.

21. Very Poor Weld Toe Blend Angle Improved Weld Toe Blend Angle
Effect of a Poor Toe Blend Angle
6 mm
80°
Very Poor Weld Toe Blend Angle
3 mm*
20°
Improved Weld Toe Blend Angle
Paidar Quality Eng. Co.

22. Coffee Break
Paidar Quality Eng. Co.

23. Effect of a Poor Toe Blend Angle
It is also possible that the height of excess weld metal is within the accepted limit of an applied standard, but the toe blend is unacceptable, as shown below*
90°
3 mm
Extremely poor toe blend, but excess weld metal is within limits*
Paidar Quality Eng. Co.

24. Paidar Quality Eng. Co.

25. Paidar Quality Eng. Co.

26. Paidar Quality Eng. Co.

27. Paidar Quality Eng. Co.

28. Paidar Quality Eng. Co.

29. Paidar Quality Eng. Co.

30. Paidar Quality Eng. Co.

31. Paidar Quality Eng. Co.

32. جوش انگشتانه
Paidar Quality Eng. Co.

33. Paidar Quality Eng. Co.

34. Paidar Quality Eng. Co.

35. Paidar Quality Eng. Co.

36. Paidar Quality Eng. Co.

37. جوش کام
Paidar Quality Eng. Co.

38. Paidar Quality Eng. Co.

39. Paidar Quality Eng. Co.