ASTM_A_1100_-_16.pdf

Designation:A110016Standard Guide forQualification and Control of Induction Heat Treating1This standard is issued under the fixed designation A1100;the number immediately following the designation indicates 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 guide covers the process control and productproperties verification of continuous heat treating of materialusing a quench and temper induction process(surfacehardening,surface heat treating,and batch heat-treated prod-ucts using induction are not considered in this guide).Ex-amples of products covered by this guide may include productscovered by API Specifications 20E,5L,and 5CT.1.2 This guide indicates some features of induction heattreating compared to furnace heat treating.Induction heattreating processes typically operate at higher temperaturescompared to furnace processes.1.3 This guide addresses the features and requirementsnecessary for induction heating and ancillary equipment.However,induction equipment may be used in combinationwith convection heating equipment(for example,gas orelectric furnaces).1.4 UnitsThe values stated in SI units are to be regardedas the standard.No other units of measurement are included inthis standard.1.5 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 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A255 Test Methods for Determining Hardenability of SteelA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel,Stainless Steel,RelatedAlloys,and FerroalloysA1058 Test Methods for Mechanical Testing of SteelProductsMetricE7 Terminology Relating to MetallographyE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE112 Test Methods for Determining Average Grain SizeE384 Test Method for Microindentation Hardness of Mate-rials2.2 ASM Standards:3ASM Handbook Volume 4C Induction Heating and HeatTreatment2.3 API Specifications420E Alloy and Carbon Steel Bolting for Use in the Petro-leum and Natural Gas Industries5CT Specification for Casing and Tubing5L Specification for Line Pipe2.4 ANSI Standard:5ANSI/NCSL Z540.3 Requirements for the Calibration ofMeasuring and Test Equipment3.Terminology3.1 For definitions of terms used in this guide,refer toTerminologies A941 and E7.3.2 Definitions of Terms Specific to This Standard:3.2.1 induction heat treating,vprocess by which an elec-tromagnetic field is used to induce a voltage in an electricallyconductive material thereby causing current flow and heat isgenerated in the electrically conductive material through theJoule heating effect.(See ASM Handbook 4C,p.18.)3.2.2 major rebuild,nany rebuild or repair that could alterthe temperature uniformity characteristics of an induction heattreat line.3.2.3 product,nset of similar materials to be heated bypassing through induction coils under the same conditions asdefined in 6.3 process variables.(Including as examples bar,rod,tube,pipe.)1This guide is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved Nov.1,2016.Published December 2016.DOI:10.1520/A1100-16.2For 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 standards Document Summary page onthe ASTM website.3Available from American Society for Metals(ASM International),9639Kinsman Rd.,Materials Park,OH 44073-0002,http:/www.asminternational.org.4Available from American Petroleum Institute(API),1220 L.St.,NW,Washington,DC 20005-4070,http:/www.api.org.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States13.2.4 quench media,ncoolant used to quench out the workpiece.3.2.4.1 DiscussionTypically,it contains water or waterand a polymer-based quench media.3.2.5 refractometer,ndevice used to measure the concen-tration of quench media that is mixed with water.3.2.5.1 DiscussionTypical units are in degrees Brix andare approximately equivalent to half the volume concentration.3.2.6 sensors,nneed to identify the type of sensors as theyare already in some standards.3.2.7 skin depth,nalso called depth of current penetration;the d