Reheat procedure is licensed for turned down cylinders. Even so, Every single reheat handled cylinder will have to subsequently pass the many prescribed exams. Fix by welding is not really licensed.
(iii) For the purpose of pressure measurement, the Preliminary strain should be set though the specimen is underneath a tension of twelve,000 psi plus the pressure indicator looking at remaining established at the calculated corresponding strain.
(1) A spun cylinder is one in which an conclusion closure while in the concluded cylinder has been welded with the spinning process.
Reheat treatment method is licensed for rejected cylinders. Subsequent thereto, cylinders will have to move all prescribed checks to be acceptable. Repair service by welding or spinning isn't approved.
Cylinders should be manufactured using equipment and procedures satisfactory to ensure that Every cylinder generated conforms to the necessities of the subpart. No fissure or other defects is permitted that is likely to weaken the concluded cylinder appreciably. A reasonably sleek and uniform floor finish is needed. If not originally absolutely free from such defects, the area may very well be machined or in any other case handled to do away with these defects.
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This examination may be used and should be as expected by CGA C-three. The specimen should be bent right until the elongation in the outer floor, adjacent to the root on the weld, in between the evenly scribed gage lines a to b, needs to be a minimum of 20 percent, except that this proportion may very well be minimized for steels possessing a tensile toughness in excess of fifty,000 psig, as delivered in paragraph (k) of the section.
Reheat cure is licensed for just a turned down cylinder in accordance with this particular paragraph bar 178 (n). Following reheat treatment method, a cylinder need to go all prescribed assessments In this particular area for being thought of appropriate. Repair of brazed seams by brazing and welded seams by welding is licensed.
A Bodily exam have to be performed to find out generate toughness, tensile toughness, elongation, and reduction of location of material as follows:
Components must be determined by any suited strategy except that plates and billets For decent-drawn containers has to be marked with the heat range.
(iii) For the purpose of strain measurement, the Original pressure needs to be established whilst the specimen is less than a anxiety of twelve,000 psi as well as strain indicator studying currently being established at the calculated corresponding pressure.
Welding or brazing of any attachment or opening into the heads of cylinders is permitted supplied the carbon written content in the steel isn't going to exceed 0.25 percent apart from in the situation of 4130 × steel, which can be utilised with appropriate welding course of action.
(ii) In utilizing the “extension below load” system, the total pressure (or “extension under load”), equivalent to the strain at which the 0.2-% lasting pressure occurs could be determined with sufficient precision by calculating the elastic extension with the gauge size below proper load and including thereto 0.
The limiting chemical composition of metal authorized by this specification needs to be as demonstrated in table I of appendix A to this section.