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powder handling

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Image
Published: 01 June 2007
Fig. 11.25 Valve handle assembly. From left, base with tapped hole, spring guide, and handle with inserted pin (1995 MPIF parts award recipient). Source: Ref 38 . Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... a near-net shape part. Actual raw material savings will depend on the P/M route chosen and the complexity of the component being produced. Dollar savings will reflect: Increased alloy cost in powder versus cost as ingot Increased powder handling and consolidation costs versus ingot handling...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370013
EISBN: 978-1-62708-447-5
... Abstract Sand and metallic charge materials are two essential and heavy raw materials that are needed for molding and casting. This chapter focuses on planning and provision for storage and handling of the raw materials needed for casting manufacturing. The major raw materials used for molding...
Image
Published: 01 June 2007
Fig. 11.26 Valve handle insert lockout assembly (1994 MPIF parts award recipient). Source: Ref 39 . Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000185
EISBN: 978-1-62708-312-6
... of 186 MPa (27,000 psi). Powder metallurgy offered a more than 50% cost savings over other manufacturing techniques. Secondary operations include drilling, tapping, and inserting the pin in the handle. Fig. 11.25 Valve handle assembly. From left, base with tapped hole, spring guide, and handle...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... by sintering, the feedstock strength is dominated by the backbone strength. Source: Tam et al. ( Ref 1 ) In contrast, a lubricant is added to improve powder flow or reduce forming stresses. Lubricants are oils and low-molecular-weight polymers. While binders are expected to impart handling strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460107
EISBN: 978-1-62708-285-3
... was now heated directly in the gun. Because of this, the flexibility when handling the gun improved substantively. Fig. 4.2 KINETIKS 4000-47 (30 kW preheater) system A new powder feeder was designed and manufactured by CGT. It was the first high-pressure powder feeder (4 MPa, or 580 psi...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
... the properties, compositions, and processing characteristics of beryllium and its alloys. It provides information on powder production and consolidation, commercial designations and grades, wrought products, and forming processes. It also discusses the issue of corrosion, the use of protective treatments...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230499
EISBN: 978-1-62708-298-3
... exposure in working with beryllium include melting, casting, dross handling, pickling, chemical treatment, heat treating, abrasive cutting, welding, grinding, sanding, polishing, milling, crushing, and, in general, any type of activity that may generate particulates/powders. Exposure can also occur when...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120047
EISBN: 978-1-62708-269-3
... considerations in producing titanium P/M components are oxygen content, purity, and contaminants. Oxygen has the same undesirable effects on P/M parts as it has on wrought products. Powders, especially very fine powders, must be handled very carefully because they have a high affinity for oxygen and can...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
..., compressibility, and sintering characteristics. In the basic press and sinter process, a powder needs to possess sufficient green strength to permit safe handling of the green compact prior to sintering. Spherically shaped powders have the lowest green strength and are therefore generally not usable for room...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
..., that small value makes handling the green component very difficult. Higher green strength comes with softer powders. Fig. 6.5 Example of alumina compaction data showing the pressed density as a percentage of theoretical for 0.4 μm powder agglomerated with 5 wt% polyvinyl glycol. At high pressures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200197
EISBN: 978-1-62708-354-6
... on the size and type of casting, type of metal, and the configuration of the contacts to be cut. A popular method of cutting is oxy-gas torch cutting for burning, utilizing acetylene, natural gas, propane, or proprietary fuel gases. When cutting the higher chromium or stainless steels, iron powder may...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
..., nanoscale particles, below 0.1 μm, are difficult to handle and have extremely poor flow characteristics (unless formed into larger-sized agglomerates). In the intermediate particle size range from 0.1 to 100 μm, powders tend to stick to containers, suspend in air, and exhibit uneven flow even with vibration...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290139
EISBN: 978-1-62708-319-5
... is approximately 10 kPa (0.0015 ksi). This small strength makes it difficult to handle the component. Another illustration presents an injection-molded 5 μm iron powder with paraffin wax filler and polypropylene backbone. The room-temperature saturated strength is 19 MPa (2.8 ksi). Strength drops during wax...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... are produced from powders and how the different methods compare with each other and with conventional production techniques. The methods covered include powder injection molding, spray forming, additive manufacturing, blended elemental processing, and rapid solidification. fatigue limit fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460253
EISBN: 978-1-62708-285-3
... application requires ultralow-oxygen-level coatings, emphasis must be placed on the proper handling of the feedstock powders, because this can result in a higher gain in oxygen content than the cold spraying process itself. A summary of powder size and flowability is also shown in Table 10.1 . Powder d...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900167
EISBN: 978-1-62708-350-8
... diameter and thus restricting the coolant drainage and delivery system. This applies to the machine sump and the recirculating reservoir, both of which must be cleaned frequently. In addition, the bearings on which the drive motor is connected to the wheel load handle must remain well lubricated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220281
EISBN: 978-1-62708-341-6
..., as on the handles of hand tools, scissors, etc., the heat and thus the coating can be restricted to a specific area. Thermosetting materials can also be applied electrostatically to the base metal, as is done in the manufacture of coated anchor chains. Unlike the methods described above, the dry powder is given...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
... Abstract This appendix is a compilation of terms and definitions associated with the processing, microstructure, and properties of powder metal stainless steels. microstructure powder metallurgy stainless steel Sources ASM Materials Engineering Dictionary , ASM International...