我省锻造行业使用燃煤加热炉的比例在百分之九十以上。有的厂矿由于盲目采用省外锻造炉图纸,筑炉以后大多不好用,因我省工业用煤,其煤质差,供用低发热值仅4500～5000大卡/公斤,灰分高达20～30％的煤。而省外图纸均按发热值6000大卡/公斤进行各项设计计算的,其燃烧室和加热室面积之比在50～65％。我省情况两者之比值应在85％左右为宜。根据这些特点,我会于1982年7月27日举办了一次技术讲座,参加讲座的廿多个单位近五十人。听了有关同志详细论述了 The percentage of using coal-fired furnaces in the forging industry in our province is above 90%. Some factories and mines due to the blind use of forging drawing furnace outside the province, most of the building after the furnace is not easy to use, due to industrial coal in our province, the poor quality of coal, for low heat value of only 4500 to 5000 kcal / kg, ash up to 20 to 30 % Of coal. The drawings are based on the fever value of 6000 kcal / kg for the design and calculation, the combustion chamber and the heating chamber area ratio of 50 to 65%. In our province, the ratio between the two should be about 85%. Based on these characteristics, I will hold a technical seminar on July 27, 1982, and will attend nearly 50 of the more than 20 units of the seminar. After listening to the comrades in detail discussed