Nvestigation of the effect to change of temperature heat resources in the enviroments of iron foundry by calculating of rod strengths changes of castle beams that have different temperature changes.

The mobile öranes which runs in covwered spots are discussed to bi influenced in point of decreasing their strength because of high heat sources which exist in thir operation environments. Therefore, a mobile crane which is in the casting industry has been used as the means of experiment. The factors which are obtained during the studies we have done are in minimum values. The reasons of this are; there have been ablast furnace with lew capacity, the change of air, naturally, which have been in the environment in point of reduction of heat activity, and besides, the shortness of duration of the study. Therefore, the values which are obtained not to be lookeddowmon, it is not to be forgotten that more critical values will ocur. The thesis is to show the method which will be followed; in the new calculations, new conditions are to be cansidered. The process which is followed as a method in the calculation of heat beside the normal tensions: by being taken up the cooling of the gained heat which occurs by radiantion, with natural convection; an approximate method has been developed to the experimental discoveries. In the solution of the complex circuit which occurs in the calculation of radiation circuit, a solution has been provided by using computer.