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continuous mesh belt sintering furnaces

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006075
EISBN: 978-1-62708-175-7
... furnace Fig. 15 Schematic of a wire mesh belt furnace Fig. 1 Example of dust generation during powder handling Fig. 2 Example of a dust explosion. Courtesy of U.S. Chemical Safety and Hazard Investigation Board Abstract Abstract Health and safety are critically...
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
... Metallurgy (PM) Materials (Excluding Cemented Carbides) 66 … 7625 Guide to Sample Preparation for the Chemical Analysis of the Metallic Elements in PM Materials 67 … … Guide to Temperature Profiling a Continuous Mesh-Belt Sintering Furnace 68 … … Guide to the Determination of Porosity...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006118
EISBN: 978-1-62708-175-7
... to the formation of martensite. In order to minimize residual carbon contents in PM stainless steels, one has to take several precautions. A lubricant that is easier to get rid of should preferably be used, and the quantity of lubricant used must be optimized. In the continuous mesh belt furnace sintering...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006139
EISBN: 978-1-62708-175-7
... falling through the belt, a continuous sheet of high-wet-strength paper is fed to the belt, and then the powder is transferred to the paper. A roller compresses the powder to improve heat transfer. As it enters the furnace, water is driven off and the paper burns, but not before the powder has sintered...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006111
EISBN: 978-1-62708-175-7
... affinity with oxygen ( Table 5 ), which thus allows reduction of their oxides in typical mesh belt furnaces (which cannot exceed 1150 °C, or 2100 °F, and have typical atmosphere dewpoints of approximately −10 to −40 °C, or 15 to −40 °F). The choices of sintering parameters and atmosphere for iron...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005957
EISBN: 978-1-62708-166-5
... of the system. Several important types of materials-handling systems are conveyor, belts, buckets, rollers; rotary hearth furnaces; walking beam furnaces; pusher-type furnaces; car bottom furnaces; and continuous strip furnaces. By application, the heat treating furnaces can be used for solution heat...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006081
EISBN: 978-1-62708-175-7
... and discharged on a series of screens that can be adjusted to specific particle size ranges. Granulated, ball-milled powder is fed into a blender to prepare chemically controlled feed for the decarburization furnaces. Continuous-belt furnaces are maintained under a reducing dissociated-ammonia atmosphere...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
...-type batch furnace is upgraded to a semicontinuous batch furnace, which is a commonly used piece of heat-treating equipment. The design of a semicontinuous batch furnace is shown in Fig. 1 . Common types of continuous furnaces include pusher, belt- or chain-conveyor, roller-hearth, shaker-hearth...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005930
EISBN: 978-1-62708-166-5
... for furnace parts and fixtures for hardening, annealing, normalizing, brazing, and stress relieving Table 5 Recommended materials for furnace parts and fixtures for hardening, annealing, normalizing, brazing, and stress relieving Retorts, muffles, radiant tubes Mesh belts Chain link Sprockets...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
... Particles (+8 mesh) of copper powder hammer milled from oxide-reduced sinter cake. Source: Ref 5 Fig. 10 Effect of milling time on particle shape change of spherical Ti-6Al-4V alloy particles. (a) As-received particle. (b) After 1 h. (c) After 2 h. (d) After 4 h. (e) After 8 h. (f) After 16 h...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001044
EISBN: 978-1-62708-161-0
... porosity is controlled. Successful production by powder metallurgy depends on the proper selection and control of process variables: powder characteristics; powder preparation; type of compacting press; design of compacting tools and dies; type of sintering furnace; composition of the sintering atmosphere...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
... to 60 ksi). Sintering is typically completed in a continuous mesh-belt furnace at temperatures between 815 and 870 °C (1500 and 1600 °F) for ∼3 to 8 min at temperature. Typical furnace atmospheres are dissociated ammonia or endothermic gas. To obtain reproducible sintering results it is important...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006133
EISBN: 978-1-62708-175-7
... to a ring of graphite by high-temperature brazing Fig. 1 Various furnace boats made by tungsten inert gas welding of molybdenum sheets Fig. 2 Tungsten inert gas welded tungsten mesh heating element Fig. 3 (a) Macroscopic and (b) microscopic images of seam welded, thin-walled...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005971
EISBN: 978-1-62708-168-9
..., heat-treated SPSS (single press, single sinter) FLN2-4405 are given in Table 8 . Specimens were sintered in a belt furnace at 1120 °C (2050°F) for 20 minutes in a 90-10 N 2 -H 2 atmosphere. Hardening was performed in an integral quench furnace at 870 °C (1600°F) at a 0.8% carbon potential...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001452
EISBN: 978-1-62708-173-3
... by ceramic spacers. The brazing trays were then placed on the mesh belt of a continuous-type conveyor furnace containing a dry hydrogen atmosphere. They were transported up an incline to the horizontal preheat and high-heat chambers at a speed of 6 m/h (20 ft/h). Because the assemblies were small...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001070
EISBN: 978-1-62708-162-7
... bronze bearings Sintering is typically done in a continuous-mesh belt furnace at temperatures between 815 to 870 °C (1500 to 1600 °F) for about 3 to 8 min at temperature. Typical furnace atmospheres are dissociated ammonia or endothermic gas. To obtain reproducible sintering results...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006125
EISBN: 978-1-62708-175-7
... are sometimes used to perform annealing at temperatures above 1200 °C on large workpieces that might not fit available hydrogen furnaces. Roller-hearth and mesh-belt furnaces can provide high throughput of long pieces or a large number of smaller pieces, with the advantage that the annealing cycle is more...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002151
EISBN: 978-1-62708-188-7
... the sieve spacing to which the particle corresponds. In other words, the grit size is roughly equal to the linear holes per inch of a sieve that the particle would just pass through. A 60-grit particle, for example, would pass through a 56-mesh screen but would be caught on a 64-mesh screen. Table 1 lists...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... and Phosphorus Iron Parts High-Temperature Sintering Oxygen Carbon Nitrogen Bonded and Melt Spun Nd-Fe-B Magnets Hard Ferrites Alnicos Iron and phosphorus iron parts are typically sintered in belt furnaces at a temperature of 1120 °C (2050 °F). However, a high-temperature sinter...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
..., such as vacuum, pusher, belt, rotary hearth, walking beam, roller hearth, and batch/box, may be used for sintering or reheating powder forged preforms. The sintered preforms may be forged directly from the sintering furnace; stabilized at lower temperatures and forged; or cooled to room temperature, reheated...