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rough machining

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003190
EISBN: 978-1-62708-199-3
... roughness and the symbols for defining lay and its direction. In addition, it describes the applications of surface integrity, typical surface integrity problems created in metal removal operations, and principal causes of surface alterations produced by machining processes. The article tabulates the effect...
Book

Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.9781627081887
EISBN: 978-1-62708-188-7
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003192
EISBN: 978-1-62708-199-3
...% Table 5 Reaming, free-machining low-carbon steels, wrought Material Hardness, HB Condition Roughing Finishing Speed, fpm Feed (a) , ipr, at reamer diam, in., of: Tool material grade, AISI or C Speed, fpm Feed (a) , ipr, at reamer diam, in., of: Tool material grade, AISI or C 1...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
.... Abrasive grain size: Roughing 200–400 mesh, finishing 800–1000 mesh Abrasive carrier: Usually water mixed with about 50% of abrasive, by volume Tolerances Practical: ±0.001 in. Possible: 0.0005 in. (total) Surface Roughing: 25 R a Finishing: 10 R a No heat affected surface produced...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... roughness average. Abrasive tools are also used for trimming and in the final finishing operation. Sanding drums, discs, belts, and abrasive cloth are examples of abrasive tools. Table 1 provides recommended tool types and speeds for specific operations. Table 1 Parameters for composite trimming...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003983
EISBN: 978-1-62708-185-6
... has rough surface Inadequate side clearance Increase side clearance Work sticks to die entrance taper Wipe every fourth or fifth workpiece with graphite or molybdenum disulfide powder. Too much die opening Reset machine with proper shims. Dirt and scale in die Clean dies and remove loose...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001263
EISBN: 978-1-62708-170-2
... also be useful to reduce treeing. Often it becomes necessary to stop the electroforming, remove the part, and machine off the excess deposit. One must remember to reactivate the electroform when replacing it in the plating tank. One other factor worthy of considering in minimizing roughness, pitting...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006796
EISBN: 978-1-62708-295-2
... surface due to the milling machine surface tracers, although they did not influence the erosion pattern. This result suggests that surface roughness of micrometer order or less may not influence LDI erosion of the wall material. Fig. 8 Scanning electron microscopy observation of single V-groove of...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006016
EISBN: 978-1-62708-172-6
..., and chemical contaminants. When inspecting concrete prior to coating installation, three areas of concern exist: surface roughness, moisture content in concrete, and acidity/alkalinity of the surface. The article provides information on the industry standards for assessing surface cleanliness. It...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003191
EISBN: 978-1-62708-199-3
...° clearance angle, 6.4 mm ( 1 4 in.) depth through holes For turning and milling operations, high-silicon-content aluminum alloys are rough machined using tungsten carbide tools. Finish machining is accomplished using polycrystalline diamond tooling. ...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
... human vision uses a sophisticated approach for depth perception that allows it to correctly determine the relative distances of objects, it is not able to measure a specific distance to an object other than as a very rough estimate. In addition, human vision can measure dimensions only approximately...
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
... example, in a centerless grinding process for a bearing component, the operation consisted of rough, semifinish, and finishing steps involving three operations, three machines, a large in-process inventory, and inspection between each operation. By consistent finishing with cubic boron nitride (CBN...
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
... Rough machining (of die block and/or electrodischarge machining, or EDM, electrode) Finish machining (including semifinishing where necessary) Manual finishing or benching (including manual or automated polishing) Tryout An information flow model (including the use of a coordinate...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004004
EISBN: 978-1-62708-185-6
... tolerance capabilities and shows dimensional variations obtained in production runs of specific cold-headed products. Surfaces produced by cold heading are generally smooth and seldom need secondary operations for improving the finish. Surface roughness, however, can vary considerably among different...
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
... Abstract Ring rolling is a process for creating seamless ring shaped components using specialized equipment and forming processes. This article provides information on the applications of ring rolling. It discusses the types of machines used for ring rolling, namely, vertical rolling machines...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001233
EISBN: 978-1-62708-170-2
... for rough machining. The metal removal rate achieved by EDM can range from 50 to 200 cm 3 /hr for rough cuts. As the removal rates increase, the surface finish deteriorates. ECD systems have current ratings from 100 to 2000 A at a dc voltage of 7 to 25 V. Typical outputs are 100 to 1000 A and 0 to...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... process. Pullout of grains can occur, particularly in poorly bonded workpiece materials with coarse grain structure, especially when fine-abrasive wheels are used to obtain ultrasmooth surfaces. Fig. 8 Plot of surface finish (roughness average, R a ) versus downfeed (depth of cut) for three...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... considering an installation or application: Fixturing: Distortion of gate position due to rough handling, mold inaccuracy, and so on, leads to errors in position. Some means of sensing the positions of the gates and risers is necessary. Feedback system: Because of variations in thickness and other...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003152
EISBN: 978-1-62708-199-3
... MPa (7 to 22 ksi). In cold isostatic pressing, the grade powder is consolidated into a rough billet or ingot using equal pressure from all directions. This rough billet is then preformed or machined to a net shape. Extrusion of carbide grade powders is used to produce long components of small...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001230
EISBN: 978-1-62708-170-2
..., precision, or rough, depending on the nature or scale of the output of the process, as shown in Fig. 3 . The technology drivers described earlier push the advancements in all these methods, and the directions for such advancements are also shown in Fig. 3 . The articles mentioned above describe these...