1、Designation:B94506(Reapproved 2014)Standard Practice forAluminum Alloy Extrusions Press Cooled from an ElevatedTemperature Shaping Process for Production of T1,T2,T5and T10Type Tempers1This standard is issued under the fixed designation B945;the number immediately following the designation indicates
2、 the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice establishes the controls necessary forpr
3、oduction of extrusions cooled from an elevated temperatureshaping(extrusion)process for the production of T1,T2,T5and T10type tempers(see ANSI H35.1).1.2 This practice is for production of extruded productsupplied in the alloys shown in Table 1 in the T1,T2,T5 orT10type tempers.It contains pertinent
4、 information to be usedin establishing production practices and is descriptive ratherthan prescriptive.1.3 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 heal
5、th practices and determine the applica-bility of regulatory 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 standard to theextent referenced herein:2.2 ASTM Standards:2B557 Test Methods for Tension
6、Testing Wrought and CastAluminum-and Magnesium-Alloy ProductsB647 Test Method for Indentation Hardness of AluminumAlloys by Means of a Webster Hardness GageE648 Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy SourceB881 Terminology Relating to Aluminum-and
7、 Magnesium-Alloy ProductsB918 Practice for Heat Treatment of Wrought AluminumAlloysE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE2281 Practice for Process and Measurement CapabilityIndices2.3 ANSI Standard:H35.1 Alloy and Temp
8、er Designation Systems for Alumi-num33.Terminology3.1 DefinitionsRefer to Terminology B881 for Definitionsof Product terms used in this specification.4.EquipmentNOTE1Equipment includes billet preheating,extruding and quench-ing.4.1 Prior to being extruded,aluminum alloys are heated to atemperature n
9、ot to exceed the temperatures shown in Table 1.Usual heating methods include,but are not limited to,induction,flame impingement,or forced air.Controls shall beadequate to ensure that the equipment can be operated in amanner which precludes metal overheating or deleteriouscontamination of the metal b
10、y the furnace environment.4.1.1 Temperature control and recording devices used tomeasure temperature shall be calibrated as specified in 5.2.4.2 QuenchingQuenching methods may consist of,but arenot limited to,air,water or water/glycol mixture in forced air,water spray,fog or mist,standing wave,a que
11、nch tank oranother pressurized water device,or a combination thereof.The quench equipment shall be used in a manner such that thequench parameters can be controlled and recorded.5.Quality Assurance,Calibration and Testing5.1 Process Documentation:5.1.1 Extrusion thermal practices shall be establishe
12、d,documented,controlled and monitored so that shipped productmeets order requirements.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 Nov.1,2014
13、.Published November 2014.Originallyapproved in 1925.Last previous edition approved in 2006 as B945 06.DOI:10.1520/B0945-06R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refe
14、r to the standards Document Summary page onthe ASTM website.3Available from the Aluminum Association,Inc.,1525 Wilson Blvd.,Arlington,VA 22209,www.aluminum.orgCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.1.1 CapabilityThe producers
15、 process shall have beenproven capable per Practice E2281,with documented evidenceof statistically verified capability,to produce product in variousproduct classes which conforms to required mechanical prop-erty minimums.Methods to establish capability are defined inPractice E2281.Appropriate models
16、 shall be used for repre-sentation of the data as well as the generation of control charts.For further information see ASTM MNL7A4.5.1.2 Recommended time measurements:5.1.2.1 Time interval between removal of the billet from thebillet heating equipment and start of extrusion,5.1.2.2 Time interval between the metal exiting from pressand its entering the quench,and5.1.2.3 Time interval between metal entry into and exit fromthe quench below the identified critical maximum temperature.5.2 Calibration