ASD-STAN PREN 4800-2-2001 Aerospace Series Titanium and Titanium Alloys Technical Specification Part 2 Bar and Section (Edition P1)《航空航天系列 钛和钛合金的技术规范 第2部分 棒材和型材 第P1版》.pdf

1、Draft for Public Comment Form 36 Version 6.0 I DPC: 01/710896 I Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 www. bsi- Date: 14 August 2001 Origin: European Latest date for receipt of comments: 30.1 1.2001 Responsible committee: Project no.:

2、2001/01655 ACE/49 Wrought And Cast Titanium Alloys For Aerospace Interested committees: Title: Draft EN 4800-2 Aerospace series - Titanium and titanium alloys - Technical Specification Part 2 Bar and section Supersession information: If you are aware of a current national standard which may be affec

3、ted, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30.1 1.2001. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to p

4、ublication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for

5、 briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email -. British, International and foreign standards are also avai

6、lable from BSI Customer Services. British Standards on CD or Online are available from British Standards Publishing Sales Limited. Tel: O1 344 404409 or email -, Information on the Co-operating organizations represented on the committees referenced above may be obtained from the responsible committe

7、e secretary. Cross- referen ces The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site . Responsible Committee Secretary: Mr P Rydon (BSI) Direct tel: 020 8996 7266 E-mail: paul.

8、 rydonbsi-global .com a Introduction This draft standard is based on European discussions in which the UK took an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent British Standard. If no comments are received to the contrary, then the UK will

9、approve this draft and implement it as a British Standard. Comment is particularly welcome on national, legislative or similar deviations that may be necessary. Draft no: Even if this draft standard is not approved by the UK, if it receives the necessary support in Europe, the UK will be obliged to

10、publish the official English Language text unchanged as a British Standard and to withdraw any conflicting standard. Project no.: 1998/XXXXX DPC no.: 98/XXXXXX UK Vote 3.1 6.4 Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Ist defi

11、nition Editorial Definition is ambiguous and needs clarifying. The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Amend to read . so that the mains connector to which no connection . Delete reference to UV photometer. 2n

12、d paragraph Technical Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the

13、Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for WindowsTM, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to

14、 these format requirements. Comments should be submitted wherever possible as presented in the example table below. A blank electronic version of this table is available from the Committee Secretary or it can be downloaded from the BSI web site at: http:iiww. bsi-global .corn/Stai76ar+ - dates of de

15、livery; - material standard number; - delivery condition and metallurgical code of products; - dimensions and tolerances or reference to an appropriate dimensional standard; - product designation, when required; - forwarding address; - nature and type of packing, if required; - definition and freque

16、ncy of any special tests and their retest procedures, if required 5 Health and safety Products in the delivery condition shall fulfil the health and safety laws of the area of the country when and where it is to be delivered. A product safety data sheet shall be available. 6 Technical requirements 6

17、.1 General The product shall be manufactured in accordance with the requirements of the relevant material standard and the applicable requirements of this specification. A manufacturing schedule shall be established and applied in accordance with EN 2078. Product shall satisfy the requirements of th

18、e material standard and/or order and shall be free from irregularities prejudiciable to the subsequent manufacture or use of this product. Not with standing previous acceptance complying with this material standard, any product that is found, at a later stage, to contain such defects shall be reject

19、ed. Unless otherwise specified, the requirements in tables 1 and 2 shall apply in conjunction with those of the relevant material standard. Table 1 relates to lines 1 to 29 (inclusive) of the material standard and table 2 relates to lines 30 onwards in which the sub-line format is also used. Lines 2

20、 to 98 may also be opened in line 100 if the material standard details specific qualification requirements. If a specific line number is not shown in tables 1 and 2, the requirement is stated in the material standard and/or order. The requirements of the order and/or material standard shall over-rid

21、e the requirements of the technical specification. 6.2 Qual fi cation req u i remen ts Qualification requirements when invoked by the material standard and/or order are detailed in tables 1 and 2. Unless otherwise agreed between the manufacturer and purchaser the qualification phase shall be run on

22、the first 3 batches. Page 6 prEN 4800-2: 2001 6.3 Release req u irements 6.3.1 Release tests Release testing shall be the responsibility of the manufacturer. The purchaser reserves the right to perform any of the inspections and/or tests required by the material standard and/or order. The test sampl

23、es shall be representative of the product. When required the manufacturer shall inform the purchaser of the planned dates for extraction of samples and release testing in order that these operations may be witnessed. Tables 1 and 2 detail the requirements for each line of the material standard. Unle

24、ss otherwise specifically requested by the purchaser, a particular inspection and/or test for release shall be carried out if corresponding acceptance criteria and/or values are stated in the applicable material standard, but see also section 6.2.4 “Capability clause“. 6.3.2 Retests If the test proc

25、edure or test piece preparation is faulty, testing shall be re-applied at the original frequency after rectification of the original cause of failure. When failure cannot be attributed to faulty testing, or test piece preparation, further test samples shall be selected at twice the original frequenc

26、y from the product, one of which shall be that on which the original results were obtained unless already withdrawn by the manufacturer after suitable identification of the cause of failure. If all retest results are satisfactory, the batch shall be accepted. If one or more tests are unsatisfactory,

27、 the batch shall be: - rejected, or - 1 O0 % retested and the conforming products accepted, or - partially or fully re-heat treated if heat treatment can rectify the cause of the failure and tested as a completely new batch except for chemical composition, for which redetermination of hydrogen conte

28、nt is required . No product or test sample shall be re-heat treated more than twice. 6.3.3 Rejection Any failure to meet the requirements of the material standard shall be cause for rejection. 6.3.4 Special tests Special tests may be required by the purchaser. In such cases, the nature of the test,

29、method, frequency and technical requirements shall be specified on the order or inspection schedule and shall be mutually agreed by the manufacturer and purchaser. 6.3.5 Capability clause Where capability clause is invoked and where sufficient statistical evidence exists, the test shall not be carri

30、ed out (unless specifically requested by the purchaser). However, this in no way reduces the obligations of the manufacturer to fulfil the requirements. If subsequent testing indicates that the product does not comply with the requirements, the batch shall be rejected. If sufficient statistical evid

31、ence does not exist, the test shall be carried out at a frequency agreed between the manufacturer and the purchaser. 6.3.6 Statistical process control Reduction in the extent of release testing, other than that defined in 6.2.4 above, may be negotiated with the purchaser on the basis of appropriate

32、statistical process control and/or statistical data. Page 7 prEN 4800-2: 2001 6.3.7 Inspection and test report The manufacturer shall furnish, with each delivery, a report conforming to the requirements of EN 2078 stating the following: - manufacturers name and address and, if appropriate, identific

33、ation of the plant; - order number; - material standard number; - delivery condition and metallurgical code of the product; - quantity and dimensions; - manufacturing and inspection schedule reference; - cast and batch number; - batch and/or test samples heat treatment condition; - results of the te

34、sts and retests if any. 6.4 Traceability Each product shall be traceable to the cast, production batch and/or heat treatment batch at all stages of manufacture, testing and delivery. Page 8 prEN 4800-2: 2001 7 I 2 O pI Z W a, a, CI) c O .- + c 0 o a, U .- a, o c (u e o o (u c c O U c .- .- + .- o 5

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