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hardness testing

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720085
EISBN: 978-1-62708-305-8
... Abstract This chapter discusses the operating mechanism, applications, advantages, and limitations of Brinell hardness testing, Rockwell hardness testing, Vickers hardness testing, Scleroscope hardness testing, and microhardness testing. In addition, the general precautions and selection...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the methods and procedures used for inspecting induction-hardened parts. It provides information on hardness and case depth measurements, nondestructive testing and surface analysis, the effect of various hardening errors, and relevant test standards. case...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050263
EISBN: 978-1-62708-311-9
... not meeting a hardness specification, case depth specification, or pattern length or for having a defect such as melting or a quench crack. Recommendations for inspection and testing are discussed in Chapter 12, “Standards and Inspection,” in this book, along with methods for valid and reliable test...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050093
EISBN: 978-1-62708-311-9
.... However, most of these tests require special equipment and destruction of the part being tested, and the tests cannot be performed quickly in-line. By far, hardness testing is the most universally used method for measuring the conformance to specifications for heat treating because harness tests are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... Chapter 12, “Standards and Inspection,” in this book as related to hardness testing. Chapter 13, “Nonconforming Product and Process Problems,” in this book discusses testing and inspection for induction. There are currently no national standards for the other induction heat-treating specifications...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050155
EISBN: 978-1-62708-311-9
...; round tested; as-quenched hardness, 601 HB. Source: Ref 1 Fig. 7.2 Hardness and notch toughness of 4140 steel tempered 1 h at various temperatures. Source: Ref 2 The variables associated with tempering after induction hardening that affect the microstructure and the mechanical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050175
EISBN: 978-1-62708-311-9
.... decarburization quench cracks DECARBURIZATION MAY OR MAY NOT be a defect on a workpiece. The potential for decarburization needs to be understood so that workpieces are not rejected for low hardness during inspection. The intent of this chapter is to explain decarburization and the importance of recognizing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050139
EISBN: 978-1-62708-311-9
..., with the exception of a steel workpiece that has had its heat removed by air or self-quenching. Quenching is the cooling of a workpiece at a controlled rate in order to obtain the desired microstructure and hardness. Chapter 5, “Heat Treating Basics,” in this book covers the cooling of austenite and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... of induction surface-hardened transmission shafts with that of through-hardened and carburized shafts. Arrow in lower bar (induction-hardened shafts) indicates that one shaft had not failed after testing for the maximum number of cycles shown. Source: Ref 2 Steel Surface hardness, HRC...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050001
EISBN: 978-1-62708-311-9
... surface hardness and that carbon steels could be used in place of alloy steels. Caterpillar subsequently purchased a 500 kW, 9.6 kHz motor generator set for induction hardening their final drive gear with a 642 mm (25.7 in.) diameter by a 125 mm (5 in.) wide face. In an article in the July 1943 issue of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... being used, defrag the hard drive and empty the wastebasket/recycle bin. This is considered to be anything in the high-frequency electrical connections from the terminal of the output transformer in the heat station to the induction coil. Coils have leads that are used to fasten onto either an...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050281
EISBN: 978-1-62708-311-9
... procedures to be followed when nonconforming product is found Schedules for calibration of test equipment Schedules and procedures for record retention Identification of training needed and implementation of training programs Systems for control of documentation, including review and distribution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
... coils such as machined coils need to have development programs with testing before the final coil design is produced. This appendix discusses materials used in coil building, coil design, and coil construction techniques. The electromagnetic flux fields and their influence on coil design are presented...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050025
EISBN: 978-1-62708-311-9
.... The quench tank and piping must not react with the quenchant. Polymers are very hard on painted tanks. In addition, and to prevent galvanic corrosion, the piping should not be made of dissimilar materials. A tank capacity of three to four times the quench flow per minute is recommended. The quench...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... Abstract Fabricated powder metallurgy (P/M) parts are evaluated and tested at several stages during manufacturing for part acceptance and process control. The various types of tests included are dimensional evaluation, density measurements, hardness testing, mechanical testing, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... Abstract This chapter provides an overview of the various inspection methods used with metals and alloys, namely visual inspection, coordinate measuring machines, machine vision, hardness testing, tensile testing, chemical analysis, metallography, and nondestructive testing. The nondestructive...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... discussed. The chapter provides information on the procedures involved in the inspection of castings that are limited to visual and dimensional inspections, weight testing, and hardness testing. It also discusses the use of computer equipment in foundry inspection operations. casting defects castings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... nondestructive inspection of weldments including visual inspection, liquid penetrant inspection, magnetic particle inspection, radiographic inspection, ultrasonic inspection, leak testing, and eddy current and electric current perturbation inspection. The chapter also describes the properties of brazing filler...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720321
EISBN: 978-1-62708-305-8
.... Both standard coil systems ( Fig. 18 ) are fully independent and should be operated at different positions of the waveform to obtain as much information as possible during the test. The standard system is used to monitor each bar in a lot for composition, hardness, structure, and size, and to indicate...