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MCC announces mechanical seal primary rings for sealing refrigerants
Metal Powder Report Volume 70, Number 2 March/April 2015
PRODUCT SHOWCASE
Ultrafine grains
PRODUCT SHOWCASE
The researchers first made nanocrystalline powder which was then consolidated into a bulk object. However, consolidation requires exposing the material to higher temperatures. Heating the alloys to high temperatures can cause the grains, or individual crystalline domains, within the metal to enlarge, which weakens them. Cordero was able to achieve ultrafine grain structure of about 130 nanometers in the W-7Cr-9Fe compact, confirmed by electron micrographs. ‘Using this powder processing route, we can make big samples up to 2 centimeters in diameter, or we could go bigger, with dynamic compressive strengths of 4 GPa (gigapascals). The fact that we can make these materials using a scalable process is maybe even more impressive,’ Cordero said. MIT; web.mit.edu MIT graduate student Zack Cordero demonstrates a uniaxial press used for consolidating loose powder into a pellet.
Ceratizit develops corrosion-resistant carbide Ceratizit has developed a new carbide grade in its CF product line which reportedly has improved wear resistance, toughness and edge stability. ‘Particularly in the tool and die industry, the requirements concerning wear part grades are extraordinarily high,’ said Flor¨ dler, product manager at Ceratizit ian Kno who is responsible for the CF grade range. ‘Homogeneity, porosity and corrosion resistance are the decisive factors when it comes to process security and economy in the tool and die sector.’
Material hardness The new grade, CF-S12Z, was developed with increase material hardness for improved tooling of very abrasive sheet metal. It also has increased toughness due to a specifically developed binder system. ‘Although this grade is extremely hard, the necessary edge stability is achieved,’ ¨ dler. said Kno Ceratizit; www.ceratizit.com CF-S12Z was developed with increase material hardness for improved tooling of very abrasive sheet metal.
MCC announces mechanical seal primary rings for sealing refrigerants Metallized Carbon Corporation, a manufacturer of oil-free, self-lubricating, carbongraphite materials for service lubrication applications, has developed a range of mechanical seal primary rings for sealing refrigerants and other low viscosity liquids. Designing mechanical seals for sealing refrigerants and other low viscosity liquids has been a difficult problem for seal manufacturers for many years. However, mechanical seals with antimony impregnated, carbon-graphite primary rings and solid silicon carbide counter face rings could solve this problem. Low viscosity liquids such as Freon refrigerants, liquid oxygen, liquid
carbon dioxide, propane, ethylene, and acetone are now being successfully sealed using mechanical seals with Metcar Grade M-444, antimony impregnated, carbongraphite primary seal rings.
Highly polished
Metallized Carbon Corporation’s range of mechanical seal primary rings for sealing refrigerants and other low viscosity liquids.
Low viscosity liquids are difficult for mechanical seals because the hydrodynamic film that they create between the two rubbing seal faces is extremely thin. In order for this extremely thin hydrodynamic film to lubricate the two sealing faces, the seal faces must stay highly polished and they must run in very 99
PRODUCT SHOWCASE
close proximity to each other. The M-444 antimony impregnated, carbon-graphite material and the solid silicon carbide and antimony impregnated carbon-graphite can enables these two materials to
Metal Powder Report Volume 70, Number 2 March/April 2015
run in the required close proximity. Ordinary mechanical seals with resin impregnated, carbon-graphite primary rings do not have the self-polishing characteristic or the dimensional stability that is
required for sealing these low viscosity liquids. Metallized Carbon Corporation; www.metcar. com
PRODUCT SHOWCASE
Union Process introduces Attritor conversion system Union Process Inc, a manufacturer of particle size reduction and dispersing equipment, has built a circulation conversion system for its SD1 laboratory Attritor. The circulation conversion system brings added flexibility to the model line-up and makes it easier to configure the SD1
100
laboratory Attritor to operate as a Q Laboratory Circulation Attritor, the company says. The conversion kit includes a stainless steel, Halar-coated top discharge chamber, an impeller assembly, a Halar-coated Lub-R plastic grid plate, an axial seal, an agitator shaft and a sixth arm. For the circulation
process, the system includes a 5-gallon premix/circulation tank and pumping assembly based on a 1 in. air operated diaphragm pump with plastic housing and Teflon diaphragms and balls. Union Process; www.unionprocess.com
PRODUCT SHOWCASE
Ultrafine grains
PRODUCT SHOWCASE
The researchers first made nanocrystalline powder which was then consolidated into a bulk object. However, consolidation requires exposing the material to higher temperatures. Heating the alloys to high temperatures can cause the grains, or individual crystalline domains, within the metal to enlarge, which weakens them. Cordero was able to achieve ultrafine grain structure of about 130 nanometers in the W-7Cr-9Fe compact, confirmed by electron micrographs. ‘Using this powder processing route, we can make big samples up to 2 centimeters in diameter, or we could go bigger, with dynamic compressive strengths of 4 GPa (gigapascals). The fact that we can make these materials using a scalable process is maybe even more impressive,’ Cordero said. MIT; web.mit.edu MIT graduate student Zack Cordero demonstrates a uniaxial press used for consolidating loose powder into a pellet.
Ceratizit develops corrosion-resistant carbide Ceratizit has developed a new carbide grade in its CF product line which reportedly has improved wear resistance, toughness and edge stability. ‘Particularly in the tool and die industry, the requirements concerning wear part grades are extraordinarily high,’ said Flor¨ dler, product manager at Ceratizit ian Kno who is responsible for the CF grade range. ‘Homogeneity, porosity and corrosion resistance are the decisive factors when it comes to process security and economy in the tool and die sector.’
Material hardness The new grade, CF-S12Z, was developed with increase material hardness for improved tooling of very abrasive sheet metal. It also has increased toughness due to a specifically developed binder system. ‘Although this grade is extremely hard, the necessary edge stability is achieved,’ ¨ dler. said Kno Ceratizit; www.ceratizit.com CF-S12Z was developed with increase material hardness for improved tooling of very abrasive sheet metal.
MCC announces mechanical seal primary rings for sealing refrigerants Metallized Carbon Corporation, a manufacturer of oil-free, self-lubricating, carbongraphite materials for service lubrication applications, has developed a range of mechanical seal primary rings for sealing refrigerants and other low viscosity liquids. Designing mechanical seals for sealing refrigerants and other low viscosity liquids has been a difficult problem for seal manufacturers for many years. However, mechanical seals with antimony impregnated, carbon-graphite primary rings and solid silicon carbide counter face rings could solve this problem. Low viscosity liquids such as Freon refrigerants, liquid oxygen, liquid
carbon dioxide, propane, ethylene, and acetone are now being successfully sealed using mechanical seals with Metcar Grade M-444, antimony impregnated, carbongraphite primary seal rings.
Highly polished
Metallized Carbon Corporation’s range of mechanical seal primary rings for sealing refrigerants and other low viscosity liquids.
Low viscosity liquids are difficult for mechanical seals because the hydrodynamic film that they create between the two rubbing seal faces is extremely thin. In order for this extremely thin hydrodynamic film to lubricate the two sealing faces, the seal faces must stay highly polished and they must run in very 99
PRODUCT SHOWCASE
close proximity to each other. The M-444 antimony impregnated, carbon-graphite material and the solid silicon carbide and antimony impregnated carbon-graphite can enables these two materials to
Metal Powder Report Volume 70, Number 2 March/April 2015
run in the required close proximity. Ordinary mechanical seals with resin impregnated, carbon-graphite primary rings do not have the self-polishing characteristic or the dimensional stability that is
required for sealing these low viscosity liquids. Metallized Carbon Corporation; www.metcar. com
PRODUCT SHOWCASE
Union Process introduces Attritor conversion system Union Process Inc, a manufacturer of particle size reduction and dispersing equipment, has built a circulation conversion system for its SD1 laboratory Attritor. The circulation conversion system brings added flexibility to the model line-up and makes it easier to configure the SD1
100
laboratory Attritor to operate as a Q Laboratory Circulation Attritor, the company says. The conversion kit includes a stainless steel, Halar-coated top discharge chamber, an impeller assembly, a Halar-coated Lub-R plastic grid plate, an axial seal, an agitator shaft and a sixth arm. For the circulation
process, the system includes a 5-gallon premix/circulation tank and pumping assembly based on a 1 in. air operated diaphragm pump with plastic housing and Teflon diaphragms and balls. Union Process; www.unionprocess.com