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After final PWHT, the hardness of the deposited weld metal and heat affected zone (HAZ) shall be examined. Hardness values shall not exceed 200 BHN. Heat treatment shall be performed, if required to reduce hardness to the specified level, subject to review and approval by WorleyParsons Canada.
On drums, hardness shall be measured one on each of the following welded areas:
a. Circumferential
b. Longitudinal
c. Nozzle
d. Stub
e. Attachment
Hardness test shall be made with a Brinell Testing machine or a portable hardness tester such as a Telebrineller using a 10 mm (3/8") ball.
Submerged arc weld, SAW shall be tested for hardness on the weld and on the HAZ. The values shall not exceed 200 BHN.
Where required value of BHN is not achieved, the fabricator shall perform a retest without any heat treatment whatsoever. If this second test fails to meet the BHN requirement, heat treatment shall be repeated. Methods and procedures for anticipated second heat treatment shall be pre-approved by WorleyParsons Canada.
Scissors Crossing: A scissors crossing consists of two crossovers overlapping each other. It is shown in Figure. Figure: Scissors Crossover Triangles
A tin and lead alloy is commonly known as solder. Usually solder is a wire with a rosin core used for soldering. The rosin core acts as a flux.
importance of workshop in mechanical
Use the graphics and the equation to define the term principal stress and principal planes.
RESISTANCE WELDING The types are as follows: Resistance Spot Welding Resistance Seam Welding Projection Welding Flash Butt Welding Flash Butt Welding Stit
1.Two machining operations, A (3 minutes per part) and B (10 minutes per part), are performed sequentially to manufacture a part. Machines A and B produce 5% and 6% defective items
how to calculate the distribution of shear force and bending moment for a simply supported beam
#question. parkinson gear tester.
the component of computer integrated manufacturing with the diagram
Q. Design Loads and Load Combinations? The Designer shall determine the following loads and specify them on the Data Sheet. Design loads are defined and classified as follows:
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