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die assembly

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... A press that clamps the sections together during the heating and subsequent cooling cycles A brass electrode or die that is mounted on an aluminum plate, which applies the electrical energy directly to the plastic ( Ref 48...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005292
EISBN: 978-1-62708-187-0
... Abstract High-pressure die casting is a fast method for net shape manufacturing of parts from nonferrous alloys. This article reviews the automation technologies for the different stages or steps of the process. The steps include liquid metal pouring, injection, solidification, die open, part...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006283
EISBN: 978-1-62708-169-6
... parts to prevent melting, encapsulates the entire assembly. It is airtight-sealed to the assembly frame with a vacuum connection. Even though an expensive process, it does work well. As the plastic sheet is evacuated, the titanium plates or sheets on the ceramic bed are slowly heated to the annealing...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
..., Pittsburgh, to cast and roll a steel plow, which it accomplishes at one-half the previous cost of the product. 1849—A manually operated die casting machine is patented to supply rapidly cast lead type for newspapers. 1850—Drop-bottom cupola is developed. 1863—Metallography is developed by Henry C...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009007
EISBN: 978-1-62708-185-6
..., and it is uniform throughout the specimen. This is the ideal condition to achieve when the compression test is used to measure the flow stress. When friction is present at the die contact surfaces, bulging occurs, and the strain path curves upward, as shown in Fig. 19 . Fig. 19 (a) Localized...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004041
EISBN: 978-1-62708-185-6
... machining spindle speed surface cutting speeds FORGING DIES or inserts are machined from solid blocks or forged die steels. By using standard support components such as die holders and guide pins, which ensure the overall functionality of tooling assembly, the time necessary for manufacturing a die...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005266
EISBN: 978-1-62708-187-0
... overall casting weight. In the die casting operation, more complex parts can be produced, thereby reducing the number of components in an assembly. Inserts can also be cast in place during high-pressure die casting. The high tooling costs of high-pressure die casting make short production runs generally...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
... forgings that require little or no machining before assembly. Dies are being designed and fabricated not only with zero draft, but also with an undercut and closer tolerances. These dies consist of several pieces of steel that lock together to form a single unit. The simplest precision die has only a top...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003979
EISBN: 978-1-62708-185-6
... having greater complexity or closer tolerances than are possible by forging alone. Cold coining and the assembly of two or more closed-die forgings by welding are examples of other processes that can extend the useful range of closed-die forging. Blocker-type forgings are produced in relatively...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
... a special case of mechanical-fatigue failure in which the fatigue life is only one cycle. It is usually a result of excessive forging stresses or improper die material/heat treatment selection or improper assembly of the die insert in the die holder. Forging stresses may be high because of excessive...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
...) process sequence: primary materials processing, hot forging and cold forming, and product assembly. The article discusses the material fracture and dies stress analysis and presents the optimization techniques used in 2-D and 3-D preform die design. bulk forming cold forming finite element method...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003139
EISBN: 978-1-62708-199-3
... metals on the corrosion rate of magnesium as determined by alternate immersion in 3% NaCl solution Figure 2 illustrates the effect of increasing iron, nickel, and copper contamination on the standard ASTM salt spray performance of die-cast AZ91 test specimens as compared to the range of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003996
EISBN: 978-1-62708-185-6
.... Remote die preheating systems are usually gas-fired or infrared die systems (usually batch-type) capable of slowly heating and maintaining the die blocks at recommended temperatures in Table 2 . These systems are used to preheat dies to the desired temperature prior to assembly into the forging...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005333
EISBN: 978-1-62708-187-0
... mechanical properties of these alloys has allowed previous multipart assemblies to be cast as a single piece, greatly reducing costs. The tensile properties of these alloys are influenced by casting wall thickness with a decrease in casting thickness resulting in an increase in engineering stress. Low die...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004035
EISBN: 978-1-62708-185-6
... closed-die forgings, including finish allowances for machining, length and width tolerances, die-wear tolerance, match tolerances, die-closure or thickness tolerances, straightness and flatness tolerances, radii tolerances, flash-extension tolerances, and surface tolerances. It also contains a convenient...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003987
EISBN: 978-1-62708-185-6
... Abstract Coining is a closed-die forging operation in which all surfaces of the workpiece are confined or restrained, resulting in a well-defined imprint of the die on the workpiece. This article focuses on the coining equipment (hammers and presses), lubricants, and general and special die...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
... such a test and a marine atmosphere exposure is illustrated in Fig. 10 and in Table 5 . Figure 10 shows magnesium die-cast plates that were assembled with steel cap screws and nuts and exposed to salt spray (5% NaCl) for 10 days. Table 5 lists losses of tensile strength of AZ31B-H24 sheet with...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000620
EISBN: 978-1-62708-181-8
... note the marked resemblance. SEM, 300× Fig. 952 View of fracture surface in Fig. 949 , 950 , and 951 , displaying a shrinkage cavity. Cavity is somewhat like those in Fig. 940 , but with a much coarser dendrite cell structure. SEM, 270× Brittle fracture of die cast aluminum alloy...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... testing is being investigated ( Ref 11 , 16 ), and this approach warrants extension for both control and development work. The Investment Casting Institute has provided a test die for evaluating waxes and wax injection presses ( Ref 17 , 18 ). No simple laboratory tests are available that can evaluate...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005254
EISBN: 978-1-62708-187-0
... smaller than that of silica. With low-expansion sands, dimensional tolerances of lost foam aluminum castings are even competitive with die casting. Typical mold materials for aluminum die casting (e.g., H13 steel) also have higher thermal expansion rates than the low-expansion media of lost foam molds...