Slush technology

Generally speaking, the wear behavior of nickel, depending on the composition and hardness, almost reaches the wear behavior of hard chrome. Usually galvanized mold inserts for injection molding are used with a nickel hardness of 44 to 48 HRC. For other applications, such as in the aviation industry or in the slush technology, sulfamate nickel is used with a hardness of about 25 HRC. 

The previous discussions refer mainly to the use of galvanized mold inserts in injection molds. Figure 4.54 shows an application example. The extensive field of rotational molding and the so-called slush technology is discussed in detail in... 

R. O. Voth, J. D. Siegworth, J. F. Welch and M. J. Hi2a, Process Design Criteria, Data and Metrology Related to Slush Hydrogen Technology, NASA Tech. Memo 1006, NASA Langley Res. Cntr.,Mar., 1987. 

The double slush technique offers added service value, such as ageing resistance, passive safety, weight savings and the recycling of production waste in the same application. The Audi A2 now marks the first production car to have come onto the market with an instrument panel surface developed according to this technology. 3 refs. Translated form Kunstoffe Vol.90 No.3, 2000, p.114-7. 

Hybrid storage of hydrogen, where a combination of technologies is applied, such as the storage of hydrogen as slush or as a supercritical fluid, is briefly mentioned. 

Ohira, K. (2004) Development of density and mass flow rate measurement technologies for slush hydrogen. Cryogenics, 44, 59-68. 

To handle dehydration of fruit juices, a technology called slush drying was proposed and tested with apple juice for the potential loss of volatile flavor and aroma substances (Chandrasekaran and King 1971 Lowe and King, 1974). The principle of this method stems from the dependence of the freezing point on the concentration of dissolved solids (Figure 20.1). It boils down to the fact that drying takes place from an ice-liquid mixture (slush) in which 20% to 70% of the water present in the fruit juice is frozen (the... 

In order to meet the great demands of application technology and the design department on the construction, surface structures, dimensional stability of the slush mold skins, electroplated molds are made available. The goal is reached by using a complex and expensive model technology. Figure 1.188 shows the principle path from CAD data to the finished electroplated mold shell. 

Steps for the Production of Electroplated Molds for the Slush and Spray Technology... 

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