(i) The remaining cylinders in Each individual whole lot must be examined via the proof strain, water-jacket, or immediate growth check method as prescribed in CGA C-1. The minimal examination strain have to be managed for the specific timeframe as well as tests devices must be calibrated as prescribed in CGA C-one.
The material should be determined by any suitable method besides that plates and billets For decent-drawn cylinders needs to be marked with the heat amount.
(four) As a security precaution, In the event the manufacturer elects for making this examination before the hydrostatic test, the producer need to layout the examination apparatus so the pressure is placed on the smallest spot practicable, across the point of closure, and to be able to make use of the smallest doable volume of air or gas.
(four) All cylinders needs to be inspected by the magnetic particle or dye penetrant approach to detect the existence of quenching cracks. Any cylinder uncovered to have a quenching crack should be rejected and will not be requalified.
A root bend test specimen have to be removed from the cylinder or welded test plate which was utilized for the tensile exam laid out in paragraph (l)(one) of this area. The specimen needs to be taken from across the circumferential seam and should be ready and examined in conformance with and have to satisfy the necessities of CGA C-3.
(ii) For that “extension beneath load” technique, the overall pressure (or extension under load) similar to the anxiety at which the 0.2 p.c long-lasting pressure occurs could be determined with adequate accuracy by calculating the elastic extension on the gage size less than acceptable load and including thereto 0.
(iv) Everlasting volumetric expansion may well not exceed 10 p.c of the whole volumetric expansion at more info take a look at stress.
(iii) On the cylindrical part of the shell that extends past the recessed bottom of your cylinder constituting an integral and non-tension Element of the cylinder;
(ii) In using the “extension below load” technique, the entire strain (or “extension less than load”), similar to the worry at which the 0.two % long lasting strain occurs may be identified with sufficient accuracy by calculating the elastic extension of your gauge size beneath suitable load and adding thereto 0.
(4) As a security precaution, Should the company elects for making this take a look at prior to the hydrostatic check, he must design and style his apparatus so which the force is applied to the smallest region practicable, around the point of closure, and to be able to utilize the smallest possible volume of air or gas.
(4) A take a look at cylinder or check ring will need symbolize only on the list of heats within a furnace batch presented another heats in the batch have Beforehand been examined and have handed the exams and that such exams tend not to represent a lot more than 200 cylinders from Anybody warmth.
(2) All seams from the sphere or cylinders should be fusion welded. Seams must be in the butt or joggle butt form and means have to be provided for accomplishing full penetration from the joint.
(ii) In using the “extension underneath load” process, the total pressure (or “extension underneath load”) comparable to the tension at which the 0.two % permanent pressure happens could be determined with enough accuracy by calculating the elastic extension of the gauge duration below correct load and including thereto 0.
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