抄録
It is very important to investigate how much the output of open hearth fnrriace Tsteel works is influenced by different unknown causes which have not found satisfactory sohations. The factors which may presumably influence the output are as follows:
(1) Worked days in the year.
(2) The time required for each heat.
(3) The time required for repairing the hearth bank.
(4) The quantity of each heat.
(5) Reformation of the furnace strUcture.
Taking these five factors into consideration, the actual result at a certain open hearth furnace steel works were examined and the influence was shown in tonnage. It was found that the difference between the actual result and the calculated figures was only 1.6%. In conclusion some reflection was made on the latest industrial situation of open hearth. furnace steel works with special reference to the factors (1), (3) and (5) and some remarks were made 'therewith respectively.
