1-20 of 22 Search Results for

rigid tooling compaction

Sort by
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
... with engineering materials. Table 1 provides some common examples, sorted by glass transition temperature ( T g ), which is the temperature at which the plastic softens from a rigid glass to a viscous liquid or leathery solid, depending on whether it crystallizes. It can be seen from Fig. 1...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006928
EISBN: 978-1-62708-395-9
... of a material. Fig. 13 Example of tool for shear-strength testing of plastics Deflection Temperature under Load (ASTM D648, ISO 75-1, ISO 75-2) Another measure of plastic rigidity under load is the deflection temperature under load (DTUL) test, also known as the heat-deflection temperature (HDT...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... Abstract This article discusses technologies focused on processing plastic materials or producing direct tools used in plastics processing. The article focuses on extrusion and injection molding, covering applications, materials and their properties, equipment, processing details, part design...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
... thermal analysis thermal properties thermoplastics thermosetting plastics THERMAL ANALYSIS provides a powerful tool for researchers and engineers in determining both unknown and reproducible behavioral properties of polymer molecules. During the past five decades, the thermal analysis of polymers...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
.... Engineering plastics all have, as their principal constituent, one or more synthetic polymer resins and almost universally contain additives. Additives, which have much smaller molecules than polymers, provide color, flexibility, rigidity, flame resistance, weathering resistance, and/or processibility...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006919
EISBN: 978-1-62708-395-9
... as an engineering tool for plastics is not as extensive as for other materials. A brief outline of its usefulness, as well as an example of its applicability in the area of impact for plastics, is presented. Finally, there are a number of issues related to process and environment, such as weld lines, chemical...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006944
EISBN: 978-1-62708-395-9
... exhibits glassy or brittle behavior. As the temperature increases, the elastic modulus decreases rapidly in the transition region over which the polymer changes from a glassy state to a tough or leathery behavior, and such small increases in temperature affect the rigidity of the material. In the third...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... are of the order of 1 m · s. Debris tends to stay where it is generated, so that high spots (for example, machining marks) become imprinted on the other surface if it has a higher degree of finish ( Fig. 14 ). The debris may never become exposed to the atmosphere and can become compacted under the compressive load...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
..., and unidirectional bending usually produce the beach-mark pattern shown in Fig. 2(j) . Example 1: Unidirectional-Bending Fatigue Failure of an A6 Tool Steel Shaft The shaft shown in Fig. 3 was part of a clamping device on a tooling assembly used for bending 5.7-cm (2.25-in.) outer-diameter tubing on an 8.6...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... as materials for rolling-contact bearing components show some practical advantages over traditional bearing steels. The properties of ceramics, specifically low density and high stiffness, are of most interest to gas turbine ( Ref 1 ) and machine tool manufacturers ( Ref 2 ). High hardness, low coefficient...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... temperature of the lubricant, which is 205 to 230 °C (400 to 450 °F) for the synthetic lubricants that are widely used at elevated temperatures. Molybdenum high-speed tool steels, such as M1, M2, and M10, are suitable for use to about 425 °C (800 °F) in oxidizing environments. Grades M1 and M2 maintain...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... Fatigue Failure of an A6 Tool Steel Shaft The shaft shown in Fig. 3 was part of a clamping device on a tooling assembly used for bending 5.7 cm (2.25 in.) outer-diameter tubing on an 8.6 cm (3.375 in.) radius. The assembly contained two of these shafts, both of which failed simultaneously and were...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... of loading, crack length, and geometry. The stress-intensity factor can be found for a wide range of specimen types. Standard specimens employed in fatigue crack propagation studies are the single-edge notch specimen ( Fig. 6a ) and the compact-tension specimen ( Fig. 6b ). Fig. 6 Specimens employed...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006943
EISBN: 978-1-62708-395-9
... research and routine testing. The scanning electron microscope is one of the most powerful tools in characterization and examination of materials, particularly in failure analysis. The high resolution and depth of field of SEM is necessary to reveal the surface features on the microscopic scale...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... located at various radial distances from the center of the shaft cross section. Compact-type specimens, 25.4 and 6.25 mm (1 and 0.25 in.) thick, were used for fracture-toughness and fatigue-crack-growth rate testing. In addition, 12.5 × 50.8 mm (0.5 × 2 in.) center-crack-tension specimens were also...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... the center of the shaft cross section. Compact-tension specimens, 25.4 and 6.25 mm (1 and 0.25 in.) thick, were used for fracture toughness and fatigue crack-growth rate testing. In addition, 12.5 by 50.8 mm (0.5 by 2 in.) center-crack-tension specimens were also machined from the central region of another...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
..., the ultimate user) is the best (and lowest-cost) method of avoiding casting failures. Many tools exist to assist with the process of ascertaining the cause of a failure, including design failure modes evaluations, finite-element analysis, and component testing criteria and results, which lead to process...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1