ANSI AWS C4.1-1977 Criteria for Describing Oxygen-Cut Surfaces.pdf

1、Criteria forDescribingOxygen-CutSurfacesAWS C4.1-77 (R2010)An American National Standard550 N.W. LeJeune Road, Miami, FL 33126AWS C4.1-77 (R2010)An American National StandardApproved by theAmerican National Standards InstituteReaffirmed: October 29, 2009Criteria for DescribingOxygen-Cut Surfaces1st

2、EditionPrepared by theAmerican Welding Society (AWS) C4 Committee on Oxyfuel Gas Welding and CuttingUnder the Direction of theAWS Technical Activities CommitteeApproved by theAWS Board of DirectorsAbstractThis document is an aid to assist users, inspectors, and producers in communicating among one a

3、nother their needs withregard to the oxygen-cut surface.AWS C4.1-77 (R2010)iiInternational Standard Book Number: 978-0-87171-768-9American Welding Society550 N.W. LeJeune Road, Miami, FL 33126 2010 by American Welding SocietyAll rights reservedPrinted in the United States of AmericaReaffirmed: Octob

4、er 29, 2009Photocopy Rights. No portion of this standard may be reproduced, stored in a retrieval system, or transmitted in anyform, including mechanical, photocopying, recording, or otherwise, without the prior written permission of the copyrightowner.Authorization to photocopy items for internal,

5、personal, or educational classroom use only or the internal, personal, oreducational classroom use only of specific clients is granted by the American Welding Society provided that the appropriatefee is paid to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, tel: (978) 750-840

6、0; Internet:.iiiAWS C4.1-77 (R2010)Statement on the Use of American Welding Society StandardsAll standards (codes, specifications, recommended practices, methods, classifications, and guides) of the AmericanWelding Society (AWS) are voluntary consensus standards that have been developed in accordanc

7、e with the rules of theAmerican National Standards Institute (ANSI). When AWS American National Standards are either incorporated in, ormade part of, documents that are included in federal or state laws and regulations, or the regulations of other govern-mental bodies, their provisions carry the ful

8、l legal authority of the statute. In such cases, any changes in those AWSstandards must be approved by the governmental body having statutory jurisdiction before they can become a part ofthose laws and regulations. In all cases, these standards carry the full legal authority of the contract or other

9、 documentthat invokes the AWS standards. Where this contractual relationship exists, changes in or deviations from requirementsof an AWS standard must be by agreement between the contracting parties.AWS American National Standards are developed through a consensus standards development process that

10、bringstogether volunteers representing varied viewpoints and interests to achieve consensus. While the AWS administers theprocess and establishes rules to promote fairness in the development of consensus, it does not independently test, evalu-ate, or verify the accuracy of any information or the sou

11、ndness of any judgments contained in its standards.AWS disclaims liability for any injury to persons or to property, or other damages of any nature whatsoever, whetherspecial, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or relianceon this

12、standard. AWS also makes no guarantee or warranty as to the accuracy or completeness of any informationpublished herein.In issuing and making this standard available, AWS is neither undertaking to render professional or other services for oron behalf of any person or entity, nor is AWS undertaking t

13、o perform any duty owed by any person or entity to someoneelse. Anyone using these documents should rely on his or her own independent judgment or, as appropriate, seek theadvice of a competent professional in determining the exercise of reasonable care in any given circumstances. It isassumed that

14、the use of this standard and its provisions are entrusted to appropriately qualified and competent personnel.This standard may be superseded by the issuance of new editions. Users should ensure that they have the latest edition.Publication of this standard does not authorize infringement of any pate

15、nt or trade name. Users of this standard acceptany and all liabilities for infringement of any patent or trade name items. AWS disclaims liability for the infringement ofany patent or product trade name resulting from the use of this standard.Finally, the AWS does not monitor, police, or enforce com

16、pliance with this standard, nor does it have the power to do so.On occasion, text, tables, or figures are printed incorrectly, constituting errata. Such errata, when discovered, are postedon the AWS web page (www.aws.org).Official interpretations of any of the technical requirements of this standard

17、 may only be obtained by sending a request, inwriting, to the appropriate technical committee. Such requests should be addressed to the American Welding Society,Attention: Managing Director, Technical Services Division, 550 N.W. LeJeune Road, Miami, FL 33126 (see Annex A).With regard to technical in

18、quiries made concerning AWS standards, oral opinions on AWS standards may be rendered.These opinions are offered solely as a convenience to users of this standard, and they do not constitute professionaladvice. Such opinions represent only the personal opinions of the particular individuals giving t

19、hem. These individuals donot speak on behalf of AWS, nor do these oral opinions constitute official or unofficial opinions or interpretations ofAWS. In addition, oral opinions are informal and should not be used as a substitute for an official interpretation.This standard is subject to revision at a

20、ny time by the AWS C4 Committee on Oxyfuel Gas Welding and Cutting. It mustbe reviewed every five years, and if not revised, it must be either reaffirmed or withdrawn. Comments (recommendations,additions, or deletions) and any pertinent data that may be of use in improving this standard are required

21、 and should beaddressed to AWS Headquarters. Such comments will receive careful consideration by the AWS C4 Committee onOxyfuel Gas Welding and Cutting and the author of the comments will be informed of the Committees response to thecomments. Guests are invited to attend all meetings of the AWS C4 C

22、ommittee on Oxyfuel Gas Welding and Cutting toexpress their comments verbally. Procedures for appeal of an adverse decision concerning all such comments areprovided in the Rules of Operation of the Technical Activities Committee. A copy of these Rules can be obtained fromthe American Welding Society

23、, 550 N.W. LeJeune Road, Miami, FL 33126.This page is intentionally blank.ivAWS C4.1-77 (R2010)vAWS C4.1-77 (R2010)Personnel (Reaffirmation)AWS C4 Committee on Oxyfuel Gas Welding and CuttingA. T. Sheppard, Chair The DuRoss GroupM. J. Hogan, 1st Vice Chair The Harris Products Group, A Lincoln Electr

24、ic CompanyD. B. Overvaag, 2nd Vice Chair Smith Equipment Manufacturing, Division of ITWA. M. Alonso, Secretary American Welding SocietyJ. D. Compton JD it was reaffirmed in 2010. This standard encompasses this users documentto aid in communication between parties and a separate plastic replica Surfa

25、ce Roughness Guide for Oxygen Cuttingwhich shows four samples of oxygen cut surfaces with varying levels of quality.The front matter was updated during the 2010 reaffirmation but no changes were made to the text of the document or theplastic weld replica.Comments and suggestions for the improvement

26、of this standard are welcome. They should be sent to the Secretary,AWS C4 Committee on Oxyfuel Gas Welding and Cutting, American Welding Society, 550 N.W. LeJeune Road, Miami,FL 33126.This page is intentionally blank.xAWS C4.1-77 (R2010)AWS C4.1-77 (R2010)1This document is an aid to assist users, in

27、spectors, and producers in communicating among one another their needs withregard to the oxygen-cut surface.The quality of an oxygen-cut surface is dependent on many variables, some of which are as follows:(1) Material and surface condition(2) Operator ability(3) Condition and design of torches, tip

28、s, and cutting machines(4) Oxygen purity(5) Vibrations from nearby equipment(6) Movement of the workpiece due to thermal expansion and contractionAcceptance levels of an oxygen-cut surface should be established by the user, based upon the service requirements of thepart. It is recommended that crite

29、ria pertinent to these acceptance levels be incorporated into the users shop drawings andbid documents.Repair of Oxygen-Cut SurfacesIt may be necessary to repair the as-cut surface to correct one of the conditions herein described to meet acceptance levelsestablished by the user. One accepted method

30、 is grinding. However, when repairs to meet acceptance levels require welding,such repair should be performed in accordance with applicable code requirements. The method of repair should be mutuallyagreeable to user and producer.Criteria for DescribingOxygen-Cut SurfacesAWS C4.1-77 (R2010)2Flatness

31、(F): The distance betweenDraglines (D): Lines which appear on the oxygen-Notch (N): Gouges in an oxygen-cut surface significantly deeper than the overall surfacethe two closest parallel planesbetween which all points of the cutsurface lie.FFDNN(Bottom View)roughness.cut surface. Their contours and d

32、irections do notaffect the quality of the cut surface.Roughness (R): Roughness consistsof recurring peaks and valleys inthe oxygen-cut surface. This can bedetermined by samples of acceptablequality, or by comparison to the AWSC4.1 Surface Roughness Guide forOxygen Cutting.AWS C4.1-77 (R2010)3ABAngul

33、arity (A): The deviation in degrees at any point of the cut surface from the specified angle.A = specified angle, square or bevel cutsB = the deviation from the specified angleTTTop Edge Rounding (T): Melting of the top edge of an oxygen-cut surface.SSlag (S): Deposits resulting from the oxygen cutt

34、ing process which adhere to the base metal orcut surface.This page is intentionally blank.AWS C4.1-77 (R2010)4AWS C4.1-77 (R2010)5A1. IntroductionThe American Welding Society (AWS) Board of Directors has adopted a policy whereby all official interpretations ofAWS standards are handled in a formal ma

35、nner. Under this policy, all interpretations are made by the committee that isresponsible for the standard. Official communication concerning an interpretation is directed through the AWS staffmember who works with that committee. The policy requires that all requests for an interpretation be submit

36、ted in writing.Such requests will be handled as expeditiously as possible, but due to the complexity of the work and the procedures thatmust be followed, some interpretations may require considerable time.A2. ProcedureAll inquiries shall be directed to:Managing DirectorTechnical Services DivisionAme

37、rican Welding Society550 N.W. LeJeune RoadMiami, FL 33126All inquiries shall contain the name, address, and affiliation of the inquirer, and they shall provide enough informationfor the committee to understand the point of concern in the inquiry. When the point is not clearly defined, the inquirywil

38、l be returned for clarification. For efficient handling, all inquiries should be typewritten and in the format specifiedbelow.A2.1 Scope. Each inquiry shall address one single provision of the standard unless the point of the inquiry involves twoor more interrelated provisions. The provision(s) shal

39、l be identified in the scope of the inquiry along with the edition ofthe standard that contains the provision(s) the inquirer is addressing.A2.2 Purpose of the Inquiry. The purpose of the inquiry shall be stated in this portion of the inquiry. The purpose canbe to obtain an interpretation of a stand

40、ards requirement or to request the revision of a particular provision in the standard.A2.3 Content of the Inquiry. The inquiry should be concise, yet complete, to enable the committee to understand thepoint of the inquiry. Sketches should be used whenever appropriate, and all paragraphs, figures, an

41、d tables (or annex)that bear on the inquiry shall be cited. If the point of the inquiry is to obtain a revision of the standard, the inquiry shallprovide technical justification for that revision.A2.4 Proposed Reply. The inquirer should, as a proposed reply, state an interpretation of the provision

42、that is the pointof the inquiry or provide the wording for a proposed revision, if this is what the inquirer seeks.Annex A (Informative)Guidelines for the Preparation of Technical InquiriesThis annex is not part of AWS C4.1-77 (R2010), Criteria for DescribingOxygen-Cut Surfaces, but is included for

43、informational purposes only.AWS C4.1-77 (R2010)6A3. Interpretation of Provisions of the StandardInterpretations of provisions of the standard are made by the relevant AWS technical committee. The secretary of thecommittee refers all inquiries to the chair of the particular subcommittee that has juri

44、sdiction over the portion of thestandard addressed by the inquiry. The subcommittee reviews the inquiry and the proposed reply to determine what theresponse to the inquiry should be. Following the subcommittees development of the response, the inquiry and theresponse are presented to the entire comm

45、ittee for review and approval. Upon approval by the committee, the interpretationis an official interpretation of the Society, and the secretary transmits the response to the inquirer and to the WeldingJournal for publication.A4. Publication of InterpretationsAll official interpretations will appear

46、 in the Welding Journal and will be posted on the AWS web site.A5. Telephone InquiriesTelephone inquiries to AWS Headquarters concerning AWS standards should be limited to questions of a general natureor to matters directly related to the use of the standard. The AWS Board Policy Manual requires tha

47、t all AWS staffmembers respond to a telephone request for an official interpretation of any AWS standard with the information thatsuch an interpretation can be obtained only through a written request. Headquarters staff cannot provide consultingservices. However, the staff can refer a caller to any

48、of those consultants whose names are on file at AWS Headquarters.A6. AWS Technical CommitteesThe activities of AWS technical committees regarding interpretations are limited strictly to the interpretation of provisionsof standards prepared by the committees or to consideration of revisions to existi

49、ng provisions on the basis of new dataor technology. Neither AWS staff nor the committees are in a position to offer interpretive or consulting services on (1)specific engineering problems, (2) requirements of standards applied to fabrications outside the scope of the document,or (3) points not specifically covered by the standard. In such cases, the inquirer should seek assistance from a competentengineer experienced in the particular field of interest.AWS C4.1-77 (R2010)7List of AWS Documents on Oxyfuel Gas Welding and CuttingDesignation TitleC4.1 Criteria for Describing Oxygen Cut Surf