Not known Facts About bar178 link alternatif
Not known Facts About bar178 link alternatif
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Reheat treatment is licensed for rejected cylinders. Even so, Every reheat addressed cylinder ought to subsequently pass each of the prescribed checks. Repair by welding is just not licensed.
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A Actual physical test need to be carried out to determine produce strength, tensile strength, and elongation as follows:
Marking need to be finished by stamping to the metal with the cylinder. All markings must be legible and Situated over a shoulder.
(1) Specimens needs to be taken from one particular cylinder immediately after warmth therapy as illustrated in appendix A to this subpart, preferred at random from Each individual large amount of two hundred or much less, as follows:
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Cylinders need to be created applying equipment and procedures satisfactory in order that each cylinder produced conforms to the requirements of the subpart.
(iii) The minimum amount take a look at pressure needs to be maintained not less than thirty seconds and sufficiently for a longer period to guarantee complete enlargement. Any inner pressure used right read more after heat-procedure and just before the Formal test may well not exceed 90 p.c of your take a look at strain.
(four) As a safety precaution, In the event the producer elects for making this check prior to the hydrostatic test, he must design his apparatus so that the stress is placed on the smallest place practicable, around the position of closure, and so as to utilize the smallest achievable volume of air or gas.
(5) Every new layout and any important modify to any satisfactory design needs to be skilled for manufacturing by testing prototype samples as follows:
(two) All seams of the sphere or cylinders should be fusion welded. Seams has to be in the butt or joggle butt kind and usually means must be delivered for carrying out complete penetration of your joint.
(ii) In using the “extension below load” system, the overall strain (or “extension beneath load”), similar to the stress at which the 0.two-p.c permanent strain takes place could possibly be determined with enough precision by calculating the elastic extension from the gauge length less than ideal load and adding thereto 0.
Reheat remedy of turned down cylinder is authorized. Subsequent thereto, cylinders ought to go all prescribed exams to generally be suitable. Fix by welding is approved.