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(iii) The bare minimum examination strain have to be preserved no less than thirty seconds and adequately for a longer period to be certain entire enlargement. Any interior stress used following heat-remedy and before the official exam may well not exceed ninety percent of your take a look at tension.
Product have to be discovered by any suited approach besides that plates and billets for hotdrawn cylinders must be marked with the warmth amount.
(i) The remaining cylinders in Every lot needs to be analyzed with the proof tension water-jacket or direct expansion test technique as prescribed in CGA C-1. The minimum exam force needs to be taken care of for the specific timeframe plus the screening gear have to be calibrated as prescribed in CGA C-1.
(2) Metal attachments to cylinders will need to have rounded or chamfered corners or must be secured in this kind of way as to stop the chance of creating puncture or harm to other harmful supplies offers.
Materials must be identified by any suited technique. Metal stamping of warmth identifications might not be designed in any area which is able to at some point develop into the facet wall from the cylinder. Depth of stamping may not encroach upon the bare minimum prescribed wall thickness of the cylinder.
S = PD / 4tE Where: S = wall strain in psi; P = check tension prescribed for drinking water jacket exam, i.e., at the least two times assistance stress, in psig; D = exterior diameter in inches; t = minimum wall thickness in inches; E = 0.
(ii) Verifying the prescribed minimal thickness was achieved by measuring or witnessing the measurement from the wall thickness; and
(1) Each rigidity specimen need to have a gauge length of two inches with a width not exceeding a person and just one-half inches. Aside from the grip ends, the specimen is probably not flattened. The grip finishes could be flattened to inside of one inch of each end from the diminished part.
(seven) Besides as if not furnished in paragraph (g)(6) of the segment, all cylinders, if h2o quenched or quenched that has a liquid creating a cooling level in surplus of eighty per cent of the cooling rate of water, have to be inspected via the magnetic particle, dye penetrant or ultrasonic method to detect the presence of quenching cracks. Any cylinder intended to the necessities for specification 3AA and located to have a quenching crack has to be rejected and might not be requalified.
Inspection need to be executed on The within of every container ahead of closing and externally on Just about every click here concluded container immediately after warmth treatment method.
(iii) The bare minimum check stress should be maintained at least thirty seconds and adequately more time to be sure comprehensive growth. Any inner pressure used immediately after warmth-remedy and before the Formal take a look at might not exceed 90 p.c with the take a look at strain.
Heads shaped by drawing or urgent has to be uniformly and adequately heat taken care of ahead of tests. Cylinders with integral shaped heads or bases needs to be subjected to some normalizing Procedure.
(2) Heat treatment just isn't required just after welding or brazing weldable lower carbon parts to attachments, specified in paragraph (file)(one) of this area, of similar substance that have been Beforehand welded or brazed to the best or base of cylinders and properly heat handled, offered these subsequent welding or brazing won't deliver a temperature in excessive of four hundred °File in almost any Section of the highest or base content.