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hydraulic fine-blanking presses

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... Abstract Forging machines use a wide variety of hammers, presses, and dies to produce products with the desired shape, size, and geometry. This article discusses the major types of hammers (gravity-drop, power-drop, high speed, and open-die forging), and presses (mechanical, hydraulic, screw...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... carriers, or cutting tools can be produced at rates up to several thousand per minute. Pressing pressures in the range of 20 to 300 MPa (3 to 45 ksi) are used. Low pressures are common for clay-based materials, whereas higher pressures are required for fine technical ceramics. Because of its flexibility...
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
... combinations of piercing, forming, and blanking. Hydraulic presses are extensively used for sizing operations, especially for workpieces with large surfaces to be coined. Spacers are required for maintaining close tolerances on the final dimensions of the part being sized. Hydraulic presses are sometimes...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003181
EISBN: 978-1-62708-199-3
... the platinum metals are those resulting from surface contamination derived from rolls, swaging dies, and other tools. Base-metal impurities such as iron, which may be smeared on the surface or picked up as slivers or fine dust during hot working or annealing, will alloy with the surface layers and...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
..., the manufacture of large part numbers, at least 1,000 to 10,000, is usually essential if competition with alternate manufacturing processes, such as machining, die and investment casting, die forging, fine blanking, and stamping, is to be successful. This explains the preferred use of P/M in...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
... forging presses commonly used in conventional forging ( Ref 35 , Ref 36 , Ref 37 , Ref 38 ) are used for powder forging. Tests have been conducted on many types of equipment, including hammers, high-energy rate forming (HERF) machines, mechanical presses, hydraulic presses, and screw presses ( Ref 8...
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
... ends or sides so that the dies can be handled more easily. The rough blocks are then moved to a planer or planer mill where they are paired as upper and lower die blocks of a die set. Die faces are often ground to a fine finish to obtain a smooth surface for layout work. After the material has been...
Book Chapter

By Robert Bolin
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003982
EISBN: 978-1-62708-185-6
... formed using only a fraction of the force that would be required if the entire part were formed under a die. The input blank for the ring rolling process is a donut-shaped preform that is usually formed in a hydraulic press, mechanical press, or forging hammer. Recently...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... robotics, and to secondary operations, in order to obtain the process conditions that are most efficient. This efficiency is maintained by optimizing the process line layout. Depending on the fineness of the starting powder and the sintering temperature, densities of 93 to 98% of full density are...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... roughness of dies is usually attained easily, regardless of the tool steel selected. Required finishes for fine-pitch threads can be obtained most economically by using A2 and either machining or grinding the die threads. As a short-term solution for a deficient die setup, which is the cause of most early...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003978
EISBN: 978-1-62708-185-6
... and, in general, improved tensile properties coupled with greater toughness. However, nonuniform hot deformation can lead to undesirable duplex microstructures, that is, mixed fine and coarse grain size/transformation products. Segregated regions containing higher alloy concentrations can also lead to...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003997
EISBN: 978-1-62708-185-6
... final shape in the finisher. The “finisher impression” gives the final overall shape of the workpiece. In this impression, excess metal is forced out into the flash. Flash is trimmed and recycled. Copper-base forgings exhibit high strength as a result of their fibrous texture, fine grain size...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003986
EISBN: 978-1-62708-185-6
... in Fig. 5 were forged on a developmental basis and have relatively thin webs between the hub and rim. In addition, some of the gears had relatively fine pitch teeth, further increasing the complexity for forging. It was also desired that the center web be removed to simplify the subsequent...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001232
EISBN: 978-1-62708-170-2
... finish ( Table 1 ). In rough grinding processes, material removal occurs at a rapid rate, with less emphasis on surface roughness/tolerances. In contrast, high-precision methods emphasize the attainment of fine surface finish and close tolerances at the expense of material removal rates. In precision...
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
..., or catastrophic die failure, is a limiting condition from a die-life standpoint. Failure occurs quickly (in a few cycles) because of high applied stress or low toughness of the die material. As in the case of mechanical fatigue, high stresses may result from poor die design, improper press fitting or...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005257
EISBN: 978-1-62708-187-0
... casting is usually very fine grained on the outer diameter, while the inside diameter has more impurities and inclusions that can be machined away. Centrifugal casting is used to produce cylindrical, tubular, or ring-shaped castings. The need for a center core is completely eliminated. Castings produced...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005258
EISBN: 978-1-62708-187-0
... machine Molds consist of four parts: the shell, the casting spout, roller tracks, and end plates. The mold assembly is placed on interchangeable carrying rollers that enable the use of different mold diameters and fine adjustments. Molds are cooled by a water spray, which can be divided into...