CÁC PHÉP THỬ CƠ TÍNH CƠ BẢN
Thử uốn
Thử kéo
Thử va đập
Thử phá hủy mẫu hàn góc
Thử Macro
Tensile Specimen
Fracture Fillet Specimen
CTOD Specimen
Charpy Specimen
Bend Test Specimen
Các mẫu thử cơ tính
Thử uốn
Root bend
Face bend
Weld dressed flush
Support
Former (4t)
Defect indication
Generally this specimen
would be unacceptable
Face bend
Side bend
Root bend
Minor ruptures on
tension surface
Acceptance depends
upon code
requirements
Thử uốn
Thử kéo
Transverse Tensile
Specimen
All-Weld Metal Tensile
Specimen
Thử kéo ngang
Reduced section specimen
None reduced section specimen
Thử va đập
Charpy test piece
Anvil
Dial Calibrated
in joules
Hammer
Point
reached
after
fracture
Hammer
blow
55
10
10
45
o
2mm
Root
radius
0.25mm
100% giòn
10 mm
8 mm
2 mm
22 I/2
o
Machined
notch
100% mềm
Machined
notch
Large reduction
in area, shear
lips
Fracture surface
100% bright
crystalline brittle
fracture
Randomly torn,
dull gray
fracture surface
Thử va đập
Thử phá hủy mẫu hàn góc
Hammer
2mm
Notch
Thử Macro
Weld Metal
HAZ
Parent Metal
Báo cáo thử Macro
DEFECT TYPE
1. Lack of sidewall fusion + slag
2. Slag inclusion
3. Lack of sidewall fusion
4. Cap undercut
DEFECT SIZE
4mm
3.5mm
5.8mm depth
0.6mm
ACCEPT/REJECT
Reject
Reject
Reject
Accept
Sample Number MSR-1189
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