Tempered process

Curing. Some chemically bonded bricks requke some elevated heat treatment that is typically higher than the tempering process mentioned above, but less temperature than that requked to form ceramic bonds. One example is aluminosihcate brick bonded with phosphoric acid. A very strong... 

In another method of tempering, soHd chocolate shavings are added as seed crystals to Hquid chocolate at 32—33°C. This is a particularly good technique for a small confectionery manufacturer, who does not produce his own chocolate. However, the shavings are sometimes difficult to disperse and may cause lumps in the finished product (20). Most companies use continuous thin-film heat exchangers for the tempering process. 

The tempering process entails heating a solid (generally a metal or an alloy) to a temperature just below its melting point and then cooling it rapidly. In the past, tempering was used exclusively for hardening metals and alloys, especially steel. In more recent times, since the twentieth... 

The total number of samples that can be analyzed in a single experiment is limited by the 5-min time range during which samples may be maintained at the measurement temperature (Table D3.1.1) in practice the maximum is -20 samples. If it is necessary to record more data, an efficient alternative would be to step tubes through the tempering process one at a time or in small batches so that each sample strictly follows the limits set out in Table D3.I.I. 

Day 1, 3 p.m. Prepare sample tubes and proceed through the tempering process. It should be possible to have the samples start the 26°C tempering stage by 5 p.m. 

In a sense, tempering of chocolate is done to create a small (<3%) population of seed crystals in the melted chocolate, which catalyze further crystallization of the cocoa butter when the chocolate is subsequently cooled. Through the tempering process, seed crystals in the p polymorph are formed. These stable crystals then... 

The PS FeSi2 in its as-sprayed state was mostly in its metallic a-phase, and had therefore to undergo a temper process of about 1 h between 700 and 800 C to obtain the desired semiconducting /3-phase [5]. 

TDA has provided useful information on the tempering process and iie influence of individual alloying elements in steel (15). Complications irise due to the fact that while the decomposition of martensite produces a. ontraction, decomposition of any retained y-iron is accompanied by expan-... 

Thermal treatment of photochromic glasses is generally possible, but the tempering process must be very closely controlled. The thermal stability depends on the type of the glass. If photochromic glasses are thermally overheated they may become distorted and have a degraded photochromic performance. It is therefore recommended to keep the temperature below about 200°C and to use only short durations of tempering. 

Piston extruders were, and still are, employed not only for the extrusion of ceramic bodies but also find application in many branches of industry for the shaping of plastic materials, or for bodies which have been plasticized by the tempering process. 

Farouk, S. M. (1967). Drying spinach peanuts with intermittent heating, aerating and tempering processes. PhD, Texas A M University, College Station, TX. 

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