Earth City, MO) show that a Best Practice in the control of the carbon potential in the sintering zone can significantly improve the quality of metal-injection molded (MIM) parts.
The highest accuracy carbon control is achieved by regulating the carbon potential at the sintering temperature to the value that will lead to the desired final surface carbon concentration in the sinter body upon cooling.
The paper also reviews the causes of decarburization and the dynamics of measuring atmosphere carbon potential.
The Dubai Carbon Centre of Excellence (DCCE), which aims to leverage the Emirate's carbon potential
, has commenced operations and introduced its board members at the first Dubai Global Energy Forum (DGEF).
The Prime Minister said that in order to meet the short term energy requirements of the country, external resources need to be explored on urgent basis while in the long term, hydro carbon potential
which is in abundance in the country should be exploited and developed.
In contrast, if the baseline is set at zero, farmers would receive carbon credits equal to the total carbon potential of their land, regardless of whether they had previously adopted or not.
A credit program could conceptually be set up such that each farmer received credits equal to the specific carbon potential of his or her land, accounting for soil characteristics, historical cropping patterns, weather, and so on.
Although increases in either the carbon potential
or the carburizing temperature can shorten a carburizing cycle, both methods have drawbacks.
A new carbon potential control system that significantly enhances the production process for sintered powder metal parts will be the centerpiece in the Linde North America exhibit booth at PowderMet 2012 at the Gaylord Opryland Hotel in Nashville, Tennessee.
The new technology uses continuous atmosphere sampling, a proprietary oxygen probe, and a carbon monoxide analyzer to continuously calculate atmosphere carbon potential and provide the addition, when needed, of a trim gas mixture to maintain carbon potential within a desired, pre-set range.
Tony Palermo, Metallurgy Program Manager for Linde in North America, said, "The objective of this technology is to maintain a furnace atmosphere carbon potential that contributes to the processing of sintered parts that meet required, or desired, carbon composition and consequent properties.
Models for both types of furnaces are based on material balances with the fundamental assumptions that the constituents of the furnace atmosphere are always in thermodynamic equilibrium, and the carbon potential
at the surface of the work load is proportional to the difference between the carbon potential
of the furnace atmosphere and the instantaneous surface carbon content of the work load.