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trim tear

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Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005121
EISBN: 978-1-62708-186-3
... without tearing. In most deep-drawing operations, the part has a solid bottom to form a container and a retained flange that is trimmed later in the processing. In some cases, the cup shape is fully drawn into the female die cavity, and a straight-wall cup shape is ejected through the die opening...
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
... metal-injection pressure. The wall thickness of the casting surrounding an insert should be no less than 2.0 mm (0.080 in.) to prevent cracking by shrinkage, hot tearing, and excessive residual stresses. Trimming The die-cast part is ejected from the die with a variety of appendages (gates...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005267
EISBN: 978-1-62708-187-0
... similar to the lubricants used for machining zinc castings. Failure to include soluble oil usually causes the trim die plates to solder, with consequent tearing of the trimmed parts. Quenching several hundred pounds of shots per hour in a small tank requires either a heat exchanger for the quenching fluid...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
.... Failure to include soluble oil usually causes the trim die plates to solder, with consequent tearing of the trimmed part. Quenching several hundred pounds of shots per hour in a small tank requires either a heat exchanger for the quenching fluid or connection to a larger remote reservoir so that the heat...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003992
EISBN: 978-1-62708-185-6
... damage. This article discusses the forging methods, primary mill practices (primary forging and ingot breakdown), trimming, and cleaning operations of stainless steels. It describes the use of forging equipment, dies, and die material in the forging operation. The article provides an overview...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005528
EISBN: 978-1-62708-197-9
... to it. Processes belonging to this category include blanking, trimming, piercing, guillotining, and cropping. The second category includes shear slitting and side- or edge-trimming processes. These processes use two rotary top and bottom knives, which can be of block or disk type. Schematic diagrams of the blade...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003184
EISBN: 978-1-62708-199-3
... and copper alloys, magnesium alloys, and titanium alloys. It provides forging process variables such as stock preparation, heating and cooling of forgings, die lubrication, trimming, and cleaning of these metals and alloys. The article explains the effect of temperature, deformation rate, and die temperature...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005124
EISBN: 978-1-62708-186-3
... alloy 2024-O up to 0.81 mm (0.032 in.) thick and, for some shapes, up to 1.0 mm (0.040 in.) thick. The minimum hole diameter or width of cutout is 50 mm (2 in.). A minimum of 38 mm (1 1 2 in.) trim is needed for external cuts. The form block has a sharp cutting edge where the blank...
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
... precision forging punching safety precautions thermal fatigue trimming dies vertical press wear resistance DIE MATERIALS used for hot forging include hot-work tool steels (AISI H series), some alloy steels such as the AISI 4300 or 4100 series, and a small number of proprietary, lower-alloy...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006525
EISBN: 978-1-62708-207-5
... approximately 7% as it solidifies (depending on the alloy composition), and as the casting shrinks, there can be tears, cracks, and voids in the casting. To help overcome this shrinkage, which would result in a porous, low-quality casting, there must be a means of pushing metal through the gate to fill...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... to about 15° from the vertical in small parts and 25° in large forgings, to prevent a tearing instead of a cutting action in trimming off the flash. Locked dies may sometimes be avoided by locating the parting line as shown in the lower part of Fig. 8 . Fig. 7 Locked or stepped dies used...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
... during forging, trimming, and entry into the quenchant Composition control to ensure that the martensite finish temperature is above 200 °C (400 °F) A fast cold-water quench is performed on a moving conveyor through a spray chamber or by other appropriate equipment. The relatively high...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001021
EISBN: 978-1-62708-161-0
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005318
EISBN: 978-1-62708-187-0
... thickness of the casting surrounding an insert should be no less than 2.0 mm (0.080 in.) to prevent cracking by shrinkage, hot tearing, and excessive residual stresses. The designer must consider the application of the part to assure that the unlike materials do not degrade as the result of thermal cycling...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
..., although lacking the formability of type 304, are widely used in applications that require forming by blanking, bending, drawing, or spinning. One of the most important applications for type 430 stainless steel is in automotive trim or molding. Type 409 stainless steel has found wide acceptance...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
..., such as blanking, trimming, and piercing (for example, see the articles “Blanking of Low-Carbon Steel” and “Piercing of Low-Carbon Steel” in this Volume). The choice of forming method depends on the desired size, configuration, and production quantities of a part. For example, press forming (where a punch...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
... be held around the edges to prevent wrinkling and tearing. In contrast, deformation during bending is usually confined to the area immediately adjacent to a bend line without the metal flowing or stretching. In this case, a blank may be laid out for bending without the necessity of trimming. In the design...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
... of fracture propagation. A third fracture appearance, called a tearing shear fracture, is found in conjunction with the arrest of ductile or brittle propagating fractures. Tearing shear fractures are pure shear fractures ( Fig. 3 ), as opposed to the tensile fractures shown in Fig. 1 and 2 . Tearing...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005129
EISBN: 978-1-62708-186-3
... operation prior to welding. The concavity of the laser weld is increased by excessive metal breakage at the trim edge. Some metal processors use long sections and “pocket” these sections during blanking ( Fig. 4 ) in order to eliminate movement. Fig. 4 Blanking-tooling design to ensure proper edge...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005101
EISBN: 978-1-62708-186-3
... the sheet involves tearing, resulting in a burr around the exit perimeter of the hole. This same sequence of events occurs in all shearing operations, including blanking of the initial two-dimensional pattern for subsequent forming steps, as well as in trimming excess metal from a formed part. Fig. 1...