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die set

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001250
EISBN: 978-1-62708-223-5
... Abstract A broken cross-recessed die was examined. Examination of the unetched, polished section for impurities revealed several coarse streaks of slag. The purity did not therefore correspond to the requirements set for a high speed tool steel of the given theoretical quality DMo 5. After...
Image
Published: 01 January 2002
Fig. 3 Faint cracks in 102 by 95 mm (4 by 3.75 in.) die of manganese oil-hardening steel are exaggerated by magnetic powder. During quenching, excessive stresses were set up between the body and the small protruding section and caused failure. Poor machining of the 13 mm (0.5 in.) radius More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
.... The excessive section change caused by aligning small and large holes emphasizes need for redesign. Fig. 3 Faint cracks in 102 by 95 mm (4 by 3.75 in.) die of manganese oil-hardening steel are exaggerated by magnetic powder. During quenching, excessive stresses were set up between the body...
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
... generation is often referred to as frictional heating or viscous dissipation. To produce a part with acceptable surface finish, the die lip temperature should be set to the melt temperature. Before entering the die, the melt often passes through a breaker plate and screen pack assembly ( Fig. 10...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006801
EISBN: 978-1-62708-329-4
... in understanding both necking and splitting. Splits typically open between 0 and 45° to the direction of load application, but this is complicated by complex blank and part shapes, die process, and metal flow. Splits are not found on critical radii but instead can be seen at the tangent point between the radii...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... of the forging stock rather than the more difficult task of adjusting the closure setting of the forging dies. Raising the forging temperature to facilitate die filling is often the cause of burning. Hot Tears Like burning, hot tears in forgings are almost always the result of overheating to near...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... bursts or chevron cracks, cracks on free surfaces, cracks on die-contacted surfaces Metal-flow-related problems: for example, end grain and poor surface performance; inhomogeneous grain size; shear bands and locally weakened structures; cold shuts, folds, and laps; flow-through defects Control...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001004
EISBN: 978-1-62708-229-7
... charpy test specimens. The small punch test ( 11 , 12 ) was performed on an Instron tensile testing machine. The load train contains the punch/die set which holds the small disc test sample, environmental or temperature chamber and loads which record the punching force. The Instron cross head speed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... Abstract This article focuses on the general root causes of failure attributed to the casting process, casting material, and design with examples. The casting processes discussed include gravity die casting, pressure die casting, semisolid casting, squeeze casting, and centrifugal casting. Cast...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001391
EISBN: 978-1-62708-215-0
... (e.g., overnight). As part of a quality control test program, a die shear test was performed on the resistors after solder attachment to the carrier strips. The most recent attachment shear forces varied from 0.4 to 2 kg (0.8 to 4.5 lb.). The resistors with low force values reportedly exhibited...
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
..., and addresses related considerations such as melt viscosity and melt strength, crystallization, orientation, die swell, melt fracture, shrinkage, molded-in stress, and polymer degradation. composition elastic modulus engineering plastics polymer properties polymer structure shear rate...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4
... are: Analysis of the output of interest and its variation when inputs are changing Selection of the method/model Calibration of the model using one set of data Verification of the calibration using separate data While polynomials are the most frequently used type of response surfaces, other model...
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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
...-working distance types are preferred. Focusing reveals the limitations of the method, because only part of the fracture is in focus at any setting. Thus, photographs reveal only a portion of the fracture in focus, depending on the coarseness and orientation of the fracture facets. Figure 1 shows...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001302
EISBN: 978-1-62708-215-0
... if the temperature of the blank is below about 1149 °C (2100 °F). Such blanks are also set aside, but can be re-inserted into the heating line after cooling. This forging was made in two steps. After the blank left the induction coil, it dropped through a chute and an operator placed it in a hammer forge...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
... specifically, the identification of the drying rate of a Henschel versus ribbon blender–type resin have been cited in ASTM D2396-12 ( Ref 15 ). Once the formulation has been set, the torque rheometer can be used to assess the influence of the MW and of fillers, lubricants, and other various additives. Figure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006930
EISBN: 978-1-62708-395-9
... ). In this test, a weight is applied to a plunger that is placed on top of a polymer melt sample. The plunger design, as well as the barrel and die design, have been standardized for this procedure. For Method A of this test method, the operator applies a specified load, most often 2.16 kg, to the plunger...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... contrast, it may be difficult to determine where the nickel plating ends and the surface begins, as shown in Fig. 3 (d). Figure 4 shows an example of ion-nitrided hot work die steel with a brittle white-etching iron nitride surface layer that is quite visible when mounted in a mineral-filled epoxy resin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001142
EISBN: 978-1-62708-228-0
..., but their elongation was approximately 18∼25%. This value die not satisfy the specification requiring more than 28%. Mechanical properties of the LPG cylinder. Table 2 Mechanical properties of the LPG cylinder. Yield strength MPa Ultimate strength tensile MPa Elongation % Sample 1 326 534 25.4...
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
... minimally, usually due to slack in the material. When setting up either type of test, it is important to choose the correct equipment to obtain accurate and repeatable results. First, when performing tensile testing on plastics, the gripping mechanisms must maintain gripping force as the specimen...