Metallic-core technology

Soluble core molding The soluble core technology (SCT) is called by different names such as soluble fusible metal core technology (FMCT), fusible core, lost-core, and lost-wax techniques (3). In this process, a core [usually molded of a low melting alloy (eutectic mixture) but can also use water soluble TPs, wax formulations, etc.] is inserted into a mold such as an injection molding mold. This core can be of thin wall or solid construction. 

Metal Core Technology (MCT), Lost-core molding process, CoreTech Associates, Inc. 

A S Wotherspoon, Automated injection moulding with lost metal core technology (1988). 

FALLO Follow ALL Opportunities FBF Film and Bag Federation of SPI FC fuzzy control FDA finite difference analysis FDA Food Drug Administration FEA finite element analysis FEP fluorinated ethylene-propylene FFS form, fill, seal FLC fuzzy logic control FMCT fusible metal core technology FPC flexible printed circuit fpm feet per minute FR flame retardant FRCA Fire Retardant Chemicals Assoc. 

Some metals (Al, Cr, and Fe) are not oxidized by concentrated nitric acid even though they would be expected to be oxidized based on their oxidation potentials. These metals form thin oxide layers that protect the metal core (passivation). As a result, alloyed steel equipment can be used in nitric acid technology. 

The core technology of the Thermofuel process is the catalytic reaction tower (or catalytic converter, Figure 15.7). The catalytic reaction tower contains a system of plates made from a special catalytic metal alloy. The metal plates are positioned so that the hot pyrolytic gases must travel a tortuous path, in order to maximize contact area and time. The catalyst chamber is heated to 220°C using the exhaust gases (not pyrolysis gases) from the furnace of the pyrolysis chamber. 

Although most of the technologies used in the 4S are already proven or under development, further R D work is required for some key technologies. These are criticality experiments of the metallic core with reflector, higher reliability of the reflector driving mechanism and fuel performance of a long fuel slug. 

Carbonylation reaction offers the production of more functionalized products starting from readily available feedstocks. The process represents industrial core technologies for converting various bulk chemicals such as olefins to aldehydes, alcohols and carboxylic acid derivatives. Advancement in the synthesis and knowledge of various metal carbonyls give access to various new kinds of carbonylation reactions and help in functionalization of various substrates which are otherwise difficult to synthesize. Various types of carbonylation reactions are summarized in Table 10.2. 

The causes and conditions of general achievements and setbacks in reactor and liquid metal coolant technologies are presented in the FRDB, e.g. those determining breeding characteristics (core geometry, fuel enrichment and fissile isotope content, volume fractions, intrinsic limits and smeared density of fuel and blanket pellet, etc), and the fuel bumup limits (chemical composition, fuel fabrication technology, neutron flux, dimensions, cladding and wrapper material, etc.)... 

The trends in interconnection technology in general and PCBs in particular are towards higher component density, increasing use of surface-mounted components and base material developments including the incorporation of laminated metal cores or the substitution of... 

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