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trimming

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047830
EISBN: 978-1-62708-235-8
.... Indication of fatigue failure was revealed by visual examination of the fracture surfaces. Rough grooves from hot trimming of the flash were visible on the surface of the cheeks. The outer face of one cheek of the throw on the forging contained shallow surface folds. Slightly decarburized forged surface...
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Published: 01 June 2019
Fig. 3 Trimming and cutting of tensile specimen from fully formed tube More
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Published: 01 December 1993
Fig. 3 Possible tearing mechanism during trimming. The punch pulls part of the material with it, causing stresses at the grain boundaries. Grains may separate and tear if the elastic limits reached. More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001270
EISBN: 978-1-62708-215-0
... in the forgings and from material flow during trimming and/or material flow during forging. Closed-die forging Cracking (fracturing) Die forgings Alloy steel Carbon steel Metalworking-related failures Intergranular fracture Background Cracks occasionally formed on the parting lines of medium...
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Published: 01 December 1993
Fig. 4 Effects of diemismatch during forging, which can produce a fold or lap during trimming. The force of the punch moving down causes the material to flow to the empty portion of the die; at the same time, material flows into the area from the trim line. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0047615
EISBN: 978-1-62708-230-3
... cracking were ground and repair welded. The square corners of the fins were trimmed back with a gradual taper so that expansion strains would be more gradually transferred to the tube surface. Water chemistry was closely evaluated and monitored, especially with regard to oxygen content. Boiler tubes...
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Published: 01 December 1992
Fig. 2 Scanning electron micrograph of a fracture, showing that it was brittle and transverse to the wire axis with no necking or deformation. The flat spots and abrasion marks on the sides were apparently caused by trimming, following the wire joining. More
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Published: 01 January 2002
Fig. 17 Forged 4140 steel textile-machine crankshaft that fractured in fatigue originating at machining marks and forging defects. (a) Configuration and dimensions (given in inches). (b) Fracture surface. (c) Hot trim marks. (d) Snag grinding marks. (e) Hot folds. (f) Section through a hot More
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Published: 01 June 2019
Fig. 1 Forged 4140 steel textile-machine crankshaft that fractured in fatigue originating at machining marks and forging defects. (a) Configuration and dimensions (given in inches). (b) Fracture surface. (c) Hot trim marks. (d) Snag grinding marks. (e) Hot folds. (f) Section through a hot fold More
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Published: 30 August 2021
Fig. 28 Forged grade 4140 steel textile-machine crankshaft that fractured in fatigue originating at machining marks and forging defects. (a) Configuration and dimensions (given in inches). (b) Fracture surface. (c) Hot trim marks. (d) Snag grinding marks. (e) Hot folds. (f) Section through More
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Published: 01 June 2019
, caused by rubbing during coiling. Such damage is not possible during transport; (b and c) serrated edges on hot rolled steel coil. This condition is a natural result of hot rolling, but it should be trimmed away at the steel mill prior to shipping. More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001124
EISBN: 978-1-62708-214-3
... to 75 mm (2 to 3 in.) on either side of the fracture. These were attributed to trimming that followed the wire joining. Fig. 1 Aluminum alloy conductor strands composed of 19 wires, with fracture and crack locations identified. All of the fractures and cracks were at the wire joints. Testing...
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Published: 01 January 2002
accumulate if the vessel is open to the atmosphere. (b) Structural members should be designed to avoid retention of liquids; L-shaped sections should be used with the open side down, and exposed seams should be avoided. (c) Incorrect trimming or poor design of seals and gaskets can create crevice sites. (d More
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Published: 15 January 2021
accumulate if the vessel is open to the atmosphere. (b) Structural members should be designed to avoid retention of liquids; L-shaped sections should be used with the open side down, and exposed seams should be avoided. (c) Incorrect trimming or poor design of seals and gaskets can create crevice sites. (d More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001587
EISBN: 978-1-62708-217-4
... corresponding to the initial descent, the autopilot disengaged. Simultaneously, the horizontal stabilizer trim moved to the full nose down position in six seconds, remaining in that position until the final upset. As recorded on the cockpit voice recorder, the crew commented that they were not able to maintain...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001462
EISBN: 978-1-62708-224-2
... welding process, as used in the manufacture of these chain links, and arise in material which is overheated during the weld cycle. Most of the oxidised material is exuded into the flash which is removed by the trimming operation that is carried out after welding. The flash remaining on the links that were...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... forming secondary trimming operations. Creating a clever part design that is easy to thermoform but then cannot be trimmed cleanly and easily is inefficient and will cause quality issues during production, creating needless waste and scrap parts. Material Flow Perspective This consideration...
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
... cross section and are trimmed to length (in the third direction) by a postextrusion cutting method. For example, polyvinyl chloride (PVC) pipe is continuously extruded as a cylinder, and the length of pipe is defined and created by trimming the continuous extrudate to the desired length. Extruded...
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
... are trimmed or cut off. The ability to accurately predict springback through virtual forming simulation has improved over the years but is not yet as good as the ability to predict necking and splitting. Springback is a combination of an angular change and sidewall curl ( Fig. 6 ). The springback angle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
... anneal. The hardness and percentage thickness reduction associated with each pass are shown in Table 1 . The flow formed tube, after undergoing a total percentage thickness reduction of about 88%, was trimmed, and tensile test samples were taken from a fully formed extra length of the tube as per ASTM...