摘要:
A molten aluminum alloy processing method is intended use sludge produced by the zinc phosphate treatment of structures including those of aluminum alloys effectively as a flux for molten aluminum alloy processing. The flux contains 3 to 30% by mass fluorine-equivalent metal fluorides, 40 to 90% by mass metal phosphates (8 to 18% by mass P) and 50% by mass or below inorganic salts. The sum of contents of the inorganic salts and metal phosphates is 90% by mass or below.
摘要:
In the clock control of the present invention, CPU usage rate is calculated for each of a plurality of applications with respect to a maximum clock frequency attainable by the information processing apparatus, based on registered clock frequency necessary for executing each of the applications, and a system clock frequency determined by a total sum of the CPU usage rates is set in the apparatus. If the frequency with which this system clock frequency exceeds the maximum clock frequency increases, an apparatus upgrade necessity alarm is sent. Also, any one clock frequency from among a comfortable operation clock frequency for the application, a minimum clock frequency for the application to run, and a permissible system clock frequency corresponding to usage environmental conditions (power source state, temperature and noise) is set according to the usage environmental conditions. Thereby, optimum performance of the apparatus can be provided.
摘要:
The invention relates to a coolant of aluminium dross, which used in separating and recovering metallic aluminium involved in the dross which is formed when aluminium and aluminium alloys are molten. The coolant consists of 4-60% by weight of a crabonaceous material wherein the particles whose size is 2-7 mm in diameter are not less than 50% by weight, and 4-60% by weight of at least one of obsidian, perlite, vermiculite and natural pumice whose particle size is 2-7 mm in diameter. Alternately, the coolant consists of 20-50% by weight of the carbonaceous material wherein the particles whose size 2-7 mm in diameter are not less than 50% by weight, 20-50% by weight of at least of obsidian, perlite, vermiculite and natural pumice whose particle size is 2-7 mm in diameter, and not more than 30% by weight of at least one of SiC or metal oxides such as of Al, Si Zr, Cr and Zn. Preferably, said carbonaceous material is at least one of coke and charcoal.