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tap density

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006109
EISBN: 978-1-62708-175-7
... … … … … Lithium stearate 0.50 3.14 38.70 6.38 64.01 78.25 2.74 40.90 Aluminum … None … 1.19 66.43 … 39.23 29.73 1.04 65.97 Effect of particle shape of copper powders on apparent density and tap density. Particle size distribution is the same for apparent and tap density values. Table...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... isostatic pressing (CIP) in comparison with die compaction, for powder metallurgy parts. It details the components of CIP equipment, including pressure vessels, pressure generators, and tooling material. The article reviews the part shapes and their influence in determining tap density of the filled mold...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006568
EISBN: 978-1-62708-290-7
... of powder flowability properties. This article discusses some powder flow tests that occur in powder-bed AM machines. These include the Hall/Carney flow test, bulk/tap density, rheometer, and the revolving or rotating drum technique. The three categories of powder properties that are available from...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006088
EISBN: 978-1-62708-175-7
... to +325 30 –325 19 Apparent and tap densities of three differently shaped copper powders of similar particle size distribution Table 2 Apparent and tap densities of three differently shaped copper powders of similar particle size distribution Particle shape Apparent density ( d...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006649
EISBN: 978-1-62708-213-6
... the same as that of the material which forms the particles. Four types of density can be used to describe the density of a powder: True density Particle density Apparent density (or bulk density) Tap density True density (or solid density) is defined as the ratio of particle mass...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006056
EISBN: 978-1-62708-175-7
... of a sintering operation up to a temperature of ∼450 °C (840 °F) in an inert atmosphere. Particle size and organic binder content influence powder properties such as bulk density and flowability. Tap density according to ASTM B527, “Standard Test Method for Determination of Tap Density of Metal Powders...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006033
EISBN: 978-1-62708-175-7
...Complete set of material properties for die compaction of an iron-base powder Table 1 Complete set of material properties for die compaction of an iron-base powder Densities Pycnometer density 7.8 g/cm 3 Fractional tap density 0.45 Yield function (Shima-Oyane) α 6.2 γ 1.03...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005502
EISBN: 978-1-62708-197-9
.... Of these, the most successful for metal powders has been the Shima-Oyane model, although for ceramics, soils, and minerals, other relations are generally more successful. The typical initial and boundary conditions during compaction are as follows: Initial condition for the powder: Tap density...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006042
EISBN: 978-1-62708-175-7
... quantitatively by measuring the tap density of a powder. A powder that has a tap density that is 50% of the theoretical density of a given alloy only fills 50% of the internal volume of a container. Thus, if such a powder is HIPed to full density, the filled container sees a 50 vol% shrinkage during processing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006058
EISBN: 978-1-62708-175-7
... and blended to produce uniform powder prior to consolidation. Blocky powder morphology also increases tap density by a few percent (to approximately 55% of theoretical) compared with flake shape, thereby making consolidation more effective. Vacuum induction melting is used to atomize beryllium...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006573
EISBN: 978-1-62708-290-7
... of processing parameters such as layer thickness, drying time, spread speed, and powder size on the printability and strength of green parts. The tap density and green part density of the coarse powder were similar (~53%), whereas the fine powder showed tap and green part density values of ~53 and 47...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006019
EISBN: 978-1-62708-175-7
... for such properties as particle size, apparent density, tap density, flow rate, compressibility, and green strength. Powder characteristics are directly related to the method used to produce the powder, and properties such as reactivity, shape, and hardness of the powder particles influence the process that needs...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006104
EISBN: 978-1-62708-175-7
... lengths, L c , of the roughness profile. The density influence on R a is shown in Fig. 6 . Increased density will increase the macro- R a value, while the micro- R a value is reduced. Looking at R z , it seems as if the value is constant in this density range. Conventional tap drill...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005509
EISBN: 978-1-62708-197-9
...-6Al-4V powder with a tap density of 67% was canned in a predesigned tooling capsule and HIP consolidated. The two different types of material and property databases were assumed in the model, that is, for the capsule of low-carbon A1018 steel and for the powder material of Ti-6Al-4V. Firm bonding...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002190
EISBN: 978-1-62708-188-7
...) 0.15 (0.006) 0.20 (0.008) 0.25 (0.010) 0.30 (0.012) 0.36 (0.014) S3, S4, S2 (M1, M2, M7) 24 (80) 0.075 (0.003) 0.15 (0.006) 0.20 (0.008) 0.25 (0.010) 0.30 (0.012) 0.36 (0.014) K20 (C-2) Tungsten, 85% density 180–200 Pressed and sintered 46 (150) 0.025 (0.001) 0.050 (0.002) 0.075...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002187
EISBN: 978-1-62708-188-7
... a valve seat. Dimensions given in inches Fig. 5 Tap design for zinc die castings Fig. 6 Typical cutter for milling zinc die castings Abstract Abstract This article discusses various machining techniques of zinc alloy die castings. These include turning, boring, drilling...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006484
EISBN: 978-1-62708-207-5
... into which the dross is charged, along with a halide flux to break up the oxide crust. Smelting produces molten aluminum that is tapped from the furnace and cast as secondary ingot for sale. While recycled metal is likely to continue growing as a source of aluminum metal, there are a series of technical...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002193
EISBN: 978-1-62708-188-7
... Tapping Reaming Burnishing Drilling Example 1: Influence of Work Hardening on Drilling P/M Types 304L Grinding Optimizing P/M Part Machining High Density Additives Material Guidelines Representative Machining Methods Presintering Design Additives Chips...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002122
EISBN: 978-1-62708-188-7
... depth of cut 6.35 mm (0.250 in.) Axial depth of cut 25.4 mm (1.000 in.) Cutting fluid Soluble oil (1:20) Tool life end point 0.5 mm (0.020 in.) wear Fig. 16 Reamers, taps, and drills made from P/M high-speed tool steels. Courtesy of Crucible Materials Corporation Fig. 17...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005196
EISBN: 978-1-62708-187-0
... mixes, and lining push-out device used in induction furnaces are also reviewed. The article concludes with a discussion on batch operation and tap-and-charge operation, two distinct ways of operating a coreless induction furnace. induction furnaces electromagnetic stirring mechanical skimmers...