ASTM B807 B807M-2006 Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys《铝合金用挤压机固溶热处理标准规程》.pdf
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1、Designation: B 807/B 807M 06Standard Practice forExtrusion Press Solution Heat Treatment for AluminumAlloys1This standard is issued under the fixed designation B 807/B 807M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year
2、of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This practice establishes the controls required for extru-sion press solution heat treatment of the 6xxx and 7xxx
3、 seriesaluminum alloys in Table 1 when ASTM material specifica-tions allow use of this process in lieu of furnace solution heattreatment. For the alloys listed in Table 1, this practice is analternate process to solution heat treatment in a furnace, suchas specified in Practice B 918 for the attainm
4、ent of T3, T4, T6,T7, T8 and T9-type tempers (see ANSI H35.1).1.2 This practice applies only to extrusion press solutionheat treatment for aluminum alloys. Precipitation hardening(aging) processing and equipment calibration shall meet thepractice and requirements of Practice B 918.1.3 The values sta
5、ted in either inch-pound units or SI unitsare to be regarded separately as standards. The SI units areshown in brackets or in separate tables. The values stated ineach system are not exact equivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two syste
6、ms may result in non-conformance with thepractice.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of r
7、egulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on thedate of material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 557 Test Methods of Tension Testing Wrought and CastAluminum- and Magnes
8、ium-Alloy ProductsB 557M Test Methods of Tension Testing Wrought and CastAluminum- and Magnesium-Alloy Products MetricB 647 Test Method for Indentation Hardness of AluminumAlloys by Means of a Webster Hardness GageB 648 Test Method for Indentation Hardness of AluminumAlloys by Means of a Barcol Impr
9、essorB 881 Terminology Relating to Aluminum- andMagnesium-Alloy ProductsB 918 Practice for Heat Treatment of Wrought AluminumAlloysE10 Test Method for Brinell Hardness of Metallic Materi-alsE18 Test Methods for Rockwell Hardness and RockwellSuperficial Hardness of Metallic MaterialsE 2281 Practice f
10、or Process and Measurement CapabilityIndices2.3 ASTM Manual:2ASTM MNL 7 Manual on Presentation of Data and ControlChart Analysis2.4 ANSI Standards:3H35.1 Alloy and Temper Designation Systems for Alumi-numH35.1M Alloy and Temper Designation Systems for Alu-minum Metric3. Terminology3.1 DefinitionsRef
11、er to Terminology B 881 for definitionsof product terms used in this specification.1This practice is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current edition approved March 15, 200
12、6. Published March 2006. Originallyapproved in 1990. Last previous edition approved in 2002 as B 807 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standard
13、s Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.TABLE 1 Extrusion Billet or Log Temperature High LimitAAlloyBillet or Log TemperatureUpper F Upper C6005, 6005A, 6105 1050 5656061, 6262 1050 5656060,
14、 6063, 6101, 6463, 6560 1060 5706351, 6082, 1050 5656066, 6070 1020 5507004, 7005 1000 5407029, 7046, 7116, 7129, 7146 1000 540AThese upper limit temperatures avoid the possibility of eutectic melting due tooverheating, and include a safety factor of approximately 25F 15C degrees.1*A Summary of Chan
15、ges section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.1 extrudate, nmaterial exiting an extrusion die subjectto further processing (quenching, stretching, cutting), to be-come an extruded
16、profile.3.1.2 extrusion billet, nsolid or hollow form, commonlycylindrical, used as the final length of material charged into theextrusion press cylinder, and is usually a cast product, but maybe a wrought product or sintered from powder compact.3.1.3 extrusion log, nstarting stock for extrusion bil
17、let.Extrusion log is usually produced in lengths from whichshorter extrusion billets are cut.3.1.4 extrusion press solution heat treatment, nheating analloy to a suitable temperature and then extruding, whileholding for a sufficient time to allow one or more solubleconstituents to enter into solid s
18、olution, where they are retainedin a supersaturated state after quenching.3.1.5 furnace solution heat treatment, nheating an alloy toa suitable temperature in a furnace and holding for a sufficienttime to allow one or more soluble constituents to enter intosolid solution, where they are retained in
19、a supersaturated stateafter quenching.3.2 Definitions of Terms Specific to This Standard:3.2.1 product class, na category of extruded product,consisting of the same alloy, temper and thickness, which canbe grouped for purposes of analysis of process qualificationdata and/or process monitoring data.3
20、.2.2 product type, na category of extruded product,consisting of the same alloy and product form (such as tube,pipe, rod, bar, or profile) which can be grouped for analysis ofprocess qualification and/or process monitoring.3.2.3 remote temperature sensing system, na system oftemperature measurement
21、of a non-contact type usually includ-ing either a single or multi-wavelength radiation sensingdevice.4. Equipment4.1 Aluminum alloy billets are preheated prior to beingextruded as prescribed in section 6.2. Usual heating methodsinclude, but are not limited to, induction, flame impingement,or forced
22、air. Controls shall be adequate to ensure that theequipment can be operated in a manner which precludesoverheating of the billet or deleterious contamination of thebillet by the furnace environment. Induction equipment mayrequire measurement of thermal gradients along the billet.Flame impingement de
23、vices require assessment of thermo-couple placement relative to burner location to avoid thepossibility of non-uniform surface temperature. Billet tempera-ture shall be monitored and controlled to the extent that theextrusion billet is not to exceed the maximum temperatureshown in Table 1 prior to e
24、xtrusion (see Note 1).NOTE 1Some aspects of the metallurgical structure of the alloy aftersolution heat treatment are influenced by the thermal characteristics of theheating equipment used, and the starting microstructure of the billet/log.Some heating equipment achieves very rapid temperature rise
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