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rough polishing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030043
EISBN: 978-1-62708-349-2
... cloth. Note the rounded fiber interface and the lack of interferometer bands on the longitudinal fibers. Abstract Rough grinding and polishing of mounted specimens are required to prepare the composite sample for optical analysis. This chapter describes these techniques for preparing composite...
Image
Published: 01 March 2002
Fig. 7.40 Micrograph of ASTM A 36 steel plate rough polished with 6 μm diamond paste with insufficient pressure. Note the parallel deformation zones in some of the ferrite grains (see arrow). 2% nital etch. 100× More
Image
Published: 30 April 2021
Fig. 4.21 Polishing abrasion; Ra, roughness average More
Image
Published: 01 March 2006
Fig. 11.58 Fatigue durability of polished versus rough-finish and shot peened forked connecting rods. Source: Ref 11.70 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850060
EISBN: 978-1-62708-260-0
... Abstract This chapter explains how to prepare metallographic samples for light microscopy and how to anticipate and avoid related problems. It describes standard practices and procedures for sectioning, mounting, grinding, and polishing and identifies common defects along with their causes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850543
EISBN: 978-1-62708-260-0
...). Other recipes in reference for specific Mg alloys (Haddrell, Ref. 39, Chap. 2). 1 part etch to 5 parts C-RO polishing compound. Use for 3-5 sec (Coons). Rough-polish with napped cloth on 1750 r/min wheel with solution 1. Use heavy pressure, recharge. Final polish with napped cloth on 250-500 r/min wheel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
... roughness, the factors that contribute to it, and its effect on image quality. It discusses the use of fixturing and holding devices, includes photographic examples of polishing defects and drying marks, and provides an overview of micrographic etchants and the features they reveal. It also describes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
... (0.04 in.) thick section from the primary mount. The glass slide that is bonded to the polished first face of the mount is placed against the vacuum chuck and held secure while sectioning. Fig. 6.5 Photograph of a sacrificial hand vise used for rough and fine grinding the second face...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110391
EISBN: 978-1-62708-247-1
... during grinding and rough polishing. The newer dielectric materials are not mechanically strong and will separate under tension, introducing a defect in the sample. Grit Size Grinding papers and films are specified in grit sizes, which refer to the size of the particles on the paper/film. “Grit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900167
EISBN: 978-1-62708-350-8
... these precautions ( Ref 2 ): The sample preparation techniques in this section are based on single-mounted samples and not multisampling. Hardness testing requires a polished, unscratched surface. This necessitates pregrinding. The pregrind involves an initial rough grind using 180-grit silicon carbide paper...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400169
EISBN: 978-1-62708-258-7
... Abstract This chapter instructs the metallographer on the basic skills required to prepare a polished metallographic specimen. It is organized in a chronological sequence starting with the information-gathering process on the material being investigated, then moving on to sectioning, mounting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030067
EISBN: 978-1-62708-349-2
.... This is not usually performed for preparing composite materials, as described in Chapter 3, “Rough Grinding and Polishing.” The rough grinding process is best performed using silicon carbide papers. The successive reduction in grit size is the same as described in Chapter 3 . While diamond-bonded disks can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230199
EISBN: 978-1-62708-298-3
... by previous operations. The second procedure is perhaps slightly slower than the first and requires a more careful technique, but it eliminates the use of kerosene. The specimen is first ground wet on a 240-grit disc, followed by dry grinding on a 400-grit disc. In a third procedure, rough polishing...
Image
Published: 01 December 2006
Fig. 5.21 Influence of the finish of the bearing surface on the quality of the section surface [ Tok 88 ] No. Finish Roughness, μm Billet temperature, °C 1 Ground parallel in direction of extrusion 1.50–1.75 450 2 Ground parallel in direction of extrusion 0.50–0.75 450 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
.... The polishing technique used should not introduce extraneous structures, such as disturbed metal, pitting, dragging out of inclusion, “comet tailing,” and staining. Polishing is usually conducted in several stages. Rough polishing is generally done with 6 or 3 μm diamond abrasive charged onto napless or low nap...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310193
EISBN: 978-1-62708-286-0
... to defect removal. Polishing for aesthetic purposes is generally done with abrasive coated belts and is done to both coils and sheets. There are no official roughness values for the various surface finishes. ASTM merely describes the finish by a grit with which it is typically made. Table 3 shows...
Image
Published: 01 November 2019
Figure 34 In line interferometer microscope view of top edge from Figure 33 showing a rough surface with flat tops from the polish. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110153
EISBN: 978-1-62708-247-1
... in subsequent sections. Introduction A request is received as follows: How much will it cost to thin a BGA flat to 30 µm +/-5 µm with a mirror polish finish to < 5 nm RMS roughness? These types of requests lead to a great deal of miscommunication and grief for all involved due to the great volume...
Image
Published: 01 November 2019
Figure 33 Side camera 45° view of in process polishing. Locally edges are flat but rough, center is smooth and flat. Corners sit 60 µm lower than the center due to natural convex warpage of this particular BGA package. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400087
EISBN: 978-1-62708-258-7
... the sample and then transferring the inked specimen onto paper. Sorby cut and polished his specimens to remove all “traces of roughness.” After polishing, he used extremely dilute nitric acid to etch his specimens. He actually followed the progress of etching in order not to overetch the specimen...