AA SUP-1-1995 Understanding Aluminum Extrusion Tolerances (Second Edition)《正确认识铝挤压公差.第二版》.pdf
《AA SUP-1-1995 Understanding Aluminum Extrusion Tolerances (Second Edition)《正确认识铝挤压公差.第二版》.pdf》由会员分享,可在线阅读,更多相关《AA SUP-1-1995 Understanding Aluminum Extrusion Tolerances (Second Edition)《正确认识铝挤压公差.第二版》.pdf(40页珍藏版)》请在麦多课文档分享上搜索。
1、STD.AA SUP-1-ENGL 1775 = Ob04500 002878L 474 I- -v I Understanding Aluminum Extrusion Tolerances The Aluminum Association I- I lid n II: 1 1 n L I, I mil rn STDOAA SUP-II-ENGL 1995 Ob04500 OOII782320 About The Aluminum Association The Aluminum Association represents primary and secondary producers o
2、f aluminum, as well as semi- fabricated products, Member companies operate approximately 400 plants in 30 states. The Associations mission is to increase understanding of aluminum and the aluminum industry and increase aluminums use through its technical, statistical, marketing and informational act
3、ivities and services. The Associations programs are designed to serve its customers, consumers, educators, students, government and the public generally. For the aluminum industry and its customers, the Association develops standards and designation systems, prepares codes and specifications involvi
4、ng aluminum products and addresses technical and marketing issues for the industry. The Association is the leading source of statistics for the aluminum industry. Copyright 1990. Unauthorized reproduction by photocopy or any other method is illegal. The Aluminum Association, Inc. 900 19th Street, N.
5、W. Washington, D.C. 20006 First Edition January 1990 Second Edition February 1995 STD-AA SUP-1-ENGL 1995 O604500 00118783 267 Understanding Aluminum Extrusion Tolerances his publication explains and illustrates many aspects of the published standard tolerances for aluminum T alloy extrusions, such a
6、s those contained in The Aluminum Associations Aluminum Standards and Data and the American National Standard Dimensional Tolerances for Aluminum Mill Products, ANSI H35.2. These standards are maintained by The Aluminum Association, the latter on commission by the American National Standards Institu
7、te (ANSI). The tolerances published in Aluminum Standards and Data and in ANSI H35.2 result from the voluntary consensus standards development process prescribed by ANSI. Hence, the existence of the standards do not preclude an individual or organization fiom manufacturing, marketing, purchasing, or
8、 using products not conforming to the tolerances covered by the standards and discussed in this publication. The publication and the videotape upon which is was based were developed under the guidance of a technical task force of The Aluminum Associations Extruded Products Division, which sponsored
9、their production. While the task force used its best efforts to ensure the accuracy of the content, the task force, the Extruded Products Division, and The Aluminum Association do not warrant, guarantee, or otherwise assume any responsibility for the use of the information provided in any specic app
10、lication. This publication, Understanding Aluminum Extrusion Tolerances, was originally written as a supple- ment for a 30-min video with the same title. The section and page numbers used in the publication were intended as references to sections of that videotape; in using the publication by itself
11、, those designations have no special significance. The videotape Understanding Aluminum Extrusion Tolerances is stili avail- able for purchase from The Aluminurn Association at the address printed inside the front cover. Acknowledgement is made to Aluminum Association consultants Stan Benjamin and P
12、aul V. Mara for valuable technical assistance with the project leading to this publication and the associated videotape. - STD-AA SUP-1-ENGL 1995 Ob04500 0018784 lT3 m APPENDIX Gap Width Inches 0.040-0.062 0.063-0.124 0.1 25-4.249 0.250-0.499 O .500-0.999 1 .000-1.99 2.000 and over iml Extrusion For
13、ms c.1-1 CLASS 1 CLASS 2 Group A Group B Group A Group B Alloysa Alloys Alloys 0 Alloys Ratio ) 2.0 1.5 2.0 1 .o 3.0 2.0 2.5 i .5 3.5 2.5 3.0 2.0 4.0 3.0 3.5 2.5 4.0 3.5 3.5 2.5 3.5 3.0 3.0 2.0 3.0 2.5 3.0 2.0 Hollow Shapes C.4 Solid Shapes C.5, C.6 Semihollow Shapes C.6, C.7, C.8 Definitions of Pro
14、ducts n dctermining the general configurations of desired shapes, notc the several basic classifications: solids, semiholiow, hollow, etc. These shapes are ail pro- ducible, but for economic consideration, solid shapes are most economical with costs increasing for the hoiow shapes for both metal and
15、 tooling. The produc- ers engineering and design personnel can be of assis- tance in re-designing, if needed, shapes which will ful- fill the desired function, yet reduce overall costs. How- ever, even the most intricate extruded shapes may Of- ten still be the most economic solution to your specifi
16、c need. l ExffuSbn: An extrusion is a product formed by pushing metal through a die. xtnrded ShUp: An extruded shape is a wrought product that is long in relation to its cross sectional dimensions and has a cross section other than that of sheet, plate, rod, bar, tube or wire. solid Extnrded ShUpe:
17、Any exuuded shape other than a hollow or semiholiow shape. Example, Figure 1. Figure 1 EXtnrded Rod: A solid extrusion whose cross section is round, and whose diameter is 0.375-inch or greater. Smaiier sizes are classified as wire. Table 1 : Classification-Semihollow Extruded Shapes STD-AA SUP-1-ENG
18、L 1995 W Ob04500 0038785 03T m Semihollow Shapes C.6 Figure 2 Typical Semihollow Extruded Shapes. Use Void Area D and Gap Width B or Void Areas C and D and Gap Width A, Whichever Results In Larger Ratio. Cbss I Semihollow Extruded Shape: A semihollow extruded shape of two voids or less which in the
19、area of the voids and surrounding metal thickncss is symmetrical abut the centeriine of the gap. Example, Figures 3 and 4. Figure 3: Typical Class 1, Semihollow Extruded Shape Class 2 Semihollow Extnrded Shcrpe: Any semihoilow exmded shape other than Qass 1. Example, Figures 5 and 6. n Figure 5: Typ
20、ical Class 2, Semihollow Nonsymmetrical Void, Symmetrical Surrounding Metal Thickness Figure 4: Typical Class 1, Semihollow Extruded Shape Figure 6: Typical Class 2 Semihollow Symmetrical Void, Non-symmetrical Surrounding Metal Thickness STD-AA SUP-1-ENGL 1795 Ob04500 0016786 T7b Hollow Shapes C.4 H
21、ollow fxtruded Shape; An extruded shape, any part of whose cross section completely encloses a void. CksJ I Hollow ExtBldedShape: A hollow exuuded shape whose void is round and one inch or more in diameter and whose weight is equaiiy distnbuted on opposite sides of two or more equaiiy spaced axes. E
22、xample, Figure 7. Ckcrss 2 lfo/bw Extnrdedshape: Any holiow extruded shape other than class 1 which does not exceed a 5-inch circumscribing circle and has a singie void of not less than 0.375-inch diameter or 0.1 10 square inch area. Example, Figure 8. Figure 7: Class 1 Hollow Extruded Shape II Figu
23、re 8 Class 2 Hollow Extruded Shape ChSS 3 ffObw hdet than class 1 or class 2. Example, Figure 6. Ope: An hollow extruded shape other Tube: A hollow section that is long in relation to its cross-section, which is symmetrical and is round, square, rectangular, hexagonal, octagonal, or ellipticai, with
24、 sharp or rounded comers, and having uniform wall thickness except as affected by comer radii. DrUWfI Tube: A tube having final dimensions produced by drawing through a die. Extruded Tube: A tube produced by hot extrusion. Pipe: A tube having certain standardized combinations of outside diameter and
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- AASUP11995UNDERSTANDINGALUMINUMEXTRUSIONTOLERANCESSECONDEDITION 正确认识 挤压 公差 第二 PDF

链接地址:http://www.mydoc123.com/p-417260.html