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fine grinding

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Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003193
EISBN: 978-1-62708-199-3
... finely tuned that normal variations would affect the output rate or the quality. The best approach is to accommodate any variations likely to occur. The best wheel for any application is the one that compromises the ability to cut rapidly with the ability to hold form, maintain surface roughness...
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: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001241
EISBN: 978-1-62708-170-2
... grinding conditions are chosen. These are identified as coarse grinding (where brittle fracture dominates) and fine or ductile regime grinding (where plastic deformation dominates). The consequences of such choices are low strength and poor reliability, in the case of coarse grinding, and an...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001240
EISBN: 978-1-62708-170-2
... of grinding fines is another concern, so one needs to select the correct type of chip wringer to squeeze out as much fluid as possible. The drier the chip, the lower the cost. There are several methods to dry chips, including evaporators, filters, and wringers. As with fluid, the waste generator of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... configurations. Honing, also called fine grinding, also uses fixed abrasives in a wheel or disk. Alternatively, abrasives can be applied to the work surface without being held in a grinding wheel. These methods, called free-abrasive machining, include lapping and polishing. Successful grinding of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003245
EISBN: 978-1-62708-199-3
... specimens of stainless steel casting alloys for metallographic examination are essentially the same as those used for wrought stainless steels. Coarse and fine grinding, by the traditional method, require the successive use of increasingly finer abrasive papers. Coarse grinding is generally done on SiC...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
..., removal of fine scratches requires careful final polishing. SiC papers are recommended for grinding, in the traditional manner, using the sequence 120, 240, 320, 400, and 600 grit with water cooling. Rough polishing with 6 μm diamond paste on a low- or medium-nap cloth followed by 1 μm diamond on the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003190
EISBN: 978-1-62708-199-3
... be produced by milling or turning, while a very fine (low roughness value) surface would require grinding or additional subsequent operations, such as honing, superfinishing, buffing, or abrasive flow. Therefore, specifying very fine finishes will normally result in increased costs ( Table 3...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003244
EISBN: 978-1-62708-199-3
... interpreted as structural elements. A properly prepared specimen has the following characteristics: Deformation induced by sectioning, grinding, and polishing is removed or shallow enough to be removed by the etchant. Coarse grinding scratches are removed; fine polishing scratches are tolerated in...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001305
EISBN: 978-1-62708-170-2
.... 4 finish Setup disk canvas compress wheels or abrasive belts 120–150 Manufactured types, such as Al 2 O 3 or SiC Grease stick To provide a finish similar to standard No. 4 mill finish. Variations in fineness of finish should be expected with variations in condition of grit as between a new or...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001314
EISBN: 978-1-62708-170-2
... welded. Clean, bright base metal should extend 50 to 75 mm (2 to 3 in.) from the joint on both sides of the material to prevent the corrosion products from embrittling at welding temperatures. Cleaning can be done mechanically (by grinding with a fine wheel or disk) or chemically (by pickling...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003189
EISBN: 978-1-62708-199-3
... gallons or more depending on the type of machine. A coarse strainer on top of the collecting pan prevents larger chips from entering the tank and the fine strainer at the pump section. Important exceptions are grinding, honing, lapping, and deep-hole boring machines where high-quality work depends upon...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... used when these carbonates give up their carbon dioxide (or chemically combined H 2 O), often quite explosively, upon heating. The resulting oxide particles are very fine and dusty. Decrepitation may begin as low as 400 °C (750 °F) in some dolomite, creating dusty conditions around the furnace doghouse...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
... chemical or electrochemical attack of preferentially exposed surface. Essential steps: cleaning part; masking with tapes or resistant paints, or printing, using photoengraving techniques; etching; demasking; cleaning. Two processes involved: chemical milling, chemical blanking Fine abrasive particles...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005322
EISBN: 978-1-62708-187-0
... is also a graphitizer and decreases carbide stability, while it increases pearlite fineness and the stability of pearlite, thereby increasing strength. Nickel is considered to have no undesirable effects in cast irons. Nickel is also an austenite stabilizer. Copper is used to promote pearlite...
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: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006024
EISBN: 978-1-62708-172-6
... tools can be purchased with vacuum ports and hoses for attachment to high-efficiency particulate-air-filtered vacuums so that the fine airborne particles that are generated during surface-preparation activities are collected at the point of generation. This is specifically useful when removing coatings...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006015
EISBN: 978-1-62708-172-6
...), resulting in too-low kilovolts and microamperes, too much powder per spray gun, and too many fine particles Poor grounding of objects Gun too far from object Blocked application equipment Too-low ejector or transport air pressure (insufficient volume of powder or low kinetic energy) Charge...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001313
EISBN: 978-1-62708-170-2
...) … … … Wheel dressing Open Open Open Fine None None None Wheel grading grain Dry-wet Al 2 O 3 Al 2 O 3 Al 2 O 3 Al 2 O 3 Al 2 O 3 Al 2 O 3 Al 2 O 3 Grit size (b) 60 (F) 60 (SF) 100 (F) 465 (SF) 80 (SF) 203 (SF) 60 (T) 36 (T) Grade (b) H J (SF) I (F) K K R N L...
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
... requirements. These finishing operations include: Shotblasting Grinding (from coarse to fine, depending on the casting finish quality) Trimming Machining (milling, drilling) Quality testing and inspection Depending on the alloy and requirements, the processing of castings may also include...