欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ARMY MIL-STD-1257 A-1967 RADIOGRAPHIC AND VISUAL SOUNDNESS REQUIREMENTS FOR COBALT-CHROMIUM ALLOY LINERS (FOR SMALL ARMS BARRELS)《(轻武器炮筒)钴铬合金运输机的X光纤照相术和视觉上的固定性要求》.pdf

    • 资源ID:448293       资源大小:1.22MB        全文页数:16页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ARMY MIL-STD-1257 A-1967 RADIOGRAPHIC AND VISUAL SOUNDNESS REQUIREMENTS FOR COBALT-CHROMIUM ALLOY LINERS (FOR SMALL ARMS BARRELS)《(轻武器炮筒)钴铬合金运输机的X光纤照相术和视觉上的固定性要求》.pdf

    1、NIL-STD-LZ57A ND W 77777LL UOhL3L L m 5-3qa3 MIL-STD-i 257A 24 January 1967 SUPERSEDING SA-STD-109 6 October 1962 MIL-STO-1257 28 April 1965 MILITARY STANDARD RADIOGRAPHIC AND VISUAL SOUNDNESS REQUIREMENTS FOR COBALT-CHROMIUM ALLOY LINERS (FOR SMALL ARMS BARRELS) n III- FSC B5 -., c 7- , _I THIS DOC

    2、UMENT CONTAINS I( n. PAGES. kL 7. (finish-machined) 2m mer 12 Visual standard for surface defects; caliber .50 liner (finish-machined) iii 13 U Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-STD-1257A ND U 7777733 0063834 7 m MIL -STD - 12 5 7A

    3、 24 January 1967 1. SCOPE 1.1 This standard establishes radiographic and visual standards and standard inspect$on procedures for use in acceptance inspection for soundness of cobalt-chromium alloy liner castings and finish-machined liners for small arms barrels. 2. REFERENCED DOCUMENTS 2.1 The issue

    4、s of the following documents in effect on date of invi- tation for bids form a part of this standard to the extent specified herein. SPECIFICATIONS FEDERAL L-F-350 - Film, Radiographic, Industrial. MILITARY MIL4 -13358 - Cobalt-Chromium Alloy Castings (For Barrel Tube Liners). STANDARDS MILITARY MIL

    5、-sm-453 - Inspection, Radiographic. 3. DEFINITIONS (Not applicable) 4. GENERAL REQUIREMENTS 4.1 CASTINGS. 4.1.1 Castings shall be radiographed and inspected in accordance with MIL-C-13358 or as specified in the contract and in accordance with MIL-S1D-453 except that non-film radiographic techniques

    6、are not permitted. 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1257A 24 January 1967 4.1.2 Penetrameters shall be as specified in MIL-STD-453, or a step wedge type approved by the procuring activity may be used. penetrameters used shall

    7、 be identified in the inspection records. The type of 4.1.3 Unless otherwise specified, radiographs shall show the image of at least two holes (quality level 2-2T) and the outer edge of the penetrame ter . 4.1.4 Laboratories and personnel performing radiographic inspection shall meet the requirement

    8、s of MiL-STD-453. 4.1.5 Identification markings. Each casting shall be identified by a serial number or letter of test. marked on the casting with waxed crayon or other semi-permanent method and shall be correlated with lead identification numerals, letters, or both which will appear distinctly on t

    9、he film. This identification shall be clearly 4.1.6 Acceptance standards. 4.-1.6.1 Acceptance standards for radiographic inspection of liner castings consist of radiographic negatives of liner castings for 7.62-MM and Caliber .50 machineguns, which show borderline acceptable conditions for the type

    10、of defect covered. (See Standards 1 thru 6.) Two views of the liner casting are shown on the standard negatives; one view at ninety degrees to the other view. The borderline acceptable conditions for the type of defect are indicated by circles marked on the standard negatives. 4.1.7 Defects . 4.1.7.

    11、1 The defects illustrated in this standard include internal shrinkage (shrink), gas-holes, and non-metallic inclusions (dirt) and may be recognized on the radiographic negative by the following descriptions: 4.1.7.1.1 Internal shrinkage. Appears as dendritic, filamentary, (See Standards 1 subsequent

    12、 reports and radiographs shall be furnished the procuring activity in accordance with the inspection and records provision of MIL-STD-453 or as specified in the contract. L I _I *- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-STD-3257A ND W

    13、7777733 OOhL3 4 W MIL-STD- 12 57A 2 4 January 1 9 6 7 5.2 FINISH-MACHINED LINERS. 5.2.1 Examination. Visual examination for surface defects of finish- machined liners shall be performed by the contractor in accordance with the provisions of this standard. any of the examinations set forth herein whe

    14、re such exarriinations are deemed necessary to assure supplies and services conform to the prescribed requirements. The Government reserves the right to perform 5.2.1.1 The lot size for visual examination shall be in accordance with the criteria specified in the contract. 5.2.2 Sampling. Sampling sh

    15、all be performed in accordance with the criteria specified in the contract. However, each casting which was provisionally accepted during radiographic examination (see 5.1.3.2) shall be examined for surface defects in the finish-machined condition. 5.2.3 Determination of acceptability. 5.2.3.1 The a

    16、cceptability of finish-machined liners shall be determined by comparing the visible surface defects with the applicable standards, figure 1 or 2. 5.2.3.2 Any finish-machined liners which fail to meet the applicable visual standards shall be rejected. (Copies of specifications, standards, drawings, a

    17、nd publications required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer.) (Copies of this standard for military use may be obtained as indicated in the foreword to the Index of Military Specifica

    18、tions and Standards.) (Copies of this standard may be obtained for other than official use by individuals, firms, and contractors from the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C.) Custodians : Army - WC Navy - Bu Wep Air Force - WRAMA Preparng activity: Ar

    19、my - WC Project No. 1005-0384 o 5 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r- MIL-STD-li257A ND H 7777711 0061837 6 H . *_ . . _ _ . . -_. . .- Li Y s lW7 r4 i I I Provided by IHSNot for ResaleNo reproduction or networking permitted without

    20、license from IHS-,-,-_ NIL-STD-1257A ND 7777733 0063840 2 - . .*I _. . . . .r .i ._ . :- . - . .“ . ,. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . - .r- t I 1 1 i MIL-STD-1257A ND W 7779731 0063843 4 W Y 1 67 ! J rt -.l. Provided by IHSNot fo

    21、r ResaleNo reproduction or networking permitted without license from IHS-,-,-I -2- MIL-STD-3257A ND 9977933 0063842 b - i i I :. 1. I i t i I :-, t R Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-3257A ND H 77779LL 0063843 H ! t I Iw w rl,

    22、4 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L MIL-STD-1257A ND W 7777711 OObLLILI T W _ - _- Y I O -Y=- .- - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T I I I I -r I I l I I I I I I I I

    23、I $ I a O rl rl (11 al P rl rl o 5“ g u o al w al a $4 O .rl k al U c .ri al o0 (drl WP $4 *rl 7m v1 .rl P ( rrt al rl P (d U a al o o (d al P U O c I-! rl (d %; ka alal cal u0 ox al (do alc Od url id as aiCo v1 O aal au oa hV d(d rcal affl U .rl u Ud al4 E7 (da .rl 5u MIL-STD - 12 5 7A 2 4 January 1 9 6 7 aal s mu al .rl c U. S. GOVERNMENT PRINTING OFFICE : 1966 O - 792-223 n Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


    注意事项

    本文(ARMY MIL-STD-1257 A-1967 RADIOGRAPHIC AND VISUAL SOUNDNESS REQUIREMENTS FOR COBALT-CHROMIUM ALLOY LINERS (FOR SMALL ARMS BARRELS)《(轻武器炮筒)钴铬合金运输机的X光纤照相术和视觉上的固定性要求》.pdf)为本站会员(unhappyhay135)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开