第一百零一节 炼钢
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第一百零一节炼钢
穿越者拥有的现代化的渔轮虽然在侦查能力、防护、速度和机动力上有绝对的优势,火力却很贫弱。更多小说ltxs520.com如果这次来得不是三条海盗船,而是三十条,单枪匹马的渔1号恐怕就很难有好果子吃,而闽粤海面的几位海盗大佬,每个都有至少有三四百条船的实力。整个博铺港来说,穿越者的活动范围、各种设施已经远远的超出了博铺营地范围,二百多个穿越者和社员分散在极其广阔的空间,几乎是完全不设防的。
综合下来:不仅要对海军进行装备升级,为防备万一,博铺港的港口设防工作也得提到议事日程上面。参谋们的建议包括:建造炮台;批量制造不低于1800年水平的火炮;生产和储备弹药;建立沿海警备舰队――这支舰队将主要由机帆船组成,以节约渔轮的大修寿命,穿越者在5~10年内还没有能力对这种船进行大修。连上一下船底漆这样的简单保养都做不到。倒不是没有材料,而是做不出现代船底漆的防锈和毒性效果。
造炮的任务就下达到了工业部门的机械组身上。这对机械狂人们来简直就是一针兴奋剂。憋屈了多少天都是做点小打小闹的五金件,连机械弩都是全木结构的。现在终于可以出大炮了,个个劲头十足。机械厂的工棚里,各路炮兵爱好者们川流不息,拿出的方案各式各样,基本样式基本集中在三种火炮上:12磅山地榴弹炮;轻便灵活,小专多能的92步兵炮;包打天下的迫击炮。各人根据自己的爱好还都給这些炮增加了不同的功能和改进。
造炮需要的大量的钢铁。登瀛洲已经从广州运来了两批生铁锭和少量的熟铁,总计50吨,还运来了20吨急需的煤炭。大致可以满足初步的规模化炼钢需求了。
穿越者使用的转炉炼钢法,在21世纪时空,小转炉炼钢属于国家明令淘汰的落后产业,但是在这里是真正的先进产业。这个产业就落户在博铺港区。
选择在博铺,是因为临高的钢铁联合体是属于原料全部需要进口的企业,船只运来大宗的煤炭和铁矿石可以就近使用。眼下的炼钢车间不过是一个大号的砖柱工棚,经过硬化的地坪上一字排开了4台小型转炉和1座化铁炉。
冶金部门的负责人季无声过去做过钢铁工人,小转炉炼钢虽然自己没搞过,原理还是明白的。d日之后他已经炼了几炉钢出来,证明用木炭和本地的生铁制品是可以炼出钢材来的,缺点是很难把握材料的比例,所以每次能出什么钢完全凭运气。还有就是冶金部门的能耗实在够大,光炼钢的时候两台鼓风机就得把临近所有用电部门都停下来。
冶金组根据化验出来的生铁成分,采用一种转炉侧吹法进行炼铁,采用转炉侧吹法,要添加一定比例的熟铁。比例大概是生铁76%,熟铁24%,另外需要极少量的沙子,沙子的作用是造成酸性炉渣,吸走生铁中所含有的磷。
在发现地产的耐火材料之后,冶金组已经修建了一座化铁炉,这座圆形的熔铁炉不大,却比转炉要复杂的多。因为转炉要求从化铁炉出来的铁水必须达到1380摄氏度。这一温度是一般燃料难以企及的,在没有蓄热室之前,人工所能达到的最高温度为1250摄氏度。
要达到这个温度,就必须把冷鼓风换成热鼓风。这就是所谓的“蓄热室”。热鼓风的概念是英国人尼尔森发明的,1829年应用于格拉斯哥的铁厂。
冶金组采用的蓄热室的技术水平大体和1850年的英国钢铁厂相当,采用的是铸铁管式热风炉。冷鼓风从鼓风管总管上支管通到每一个加热炉,并经过位于火上的拱形铸铁管进入到换热室另外一侧的管子中,然后再进入化铁炉的风口。整套装置被密封在一个用砖和耐火材料砌得很厚拱形加热炉内,以保存和反射尽可能的热量,鼓风被直接加热之后,温度能升高到300摄氏度,足以熔化铅。但是这个温度还不能让冶金组满意,另外采用的一个措施是废气加热,从熔铁炉顶部用陶瓷管道将炼铁炉的废气引出,从上部进入蓄热炉,再从下部的废气口排出。
在使用煤炭或者焦炭的熔铁炉内会产生大量的煤气,几个世纪以来,这种煤气基本就是从炉顶被排放掉,煤气燃烧时的熊熊火焰在夜间非常壮观,但是属于严重的浪费能源和污染环境,所以在1832年,德国的巴登一家铁厂首先将煤气用管道输送到蓄热炉进行加热用,多种手法最终会把热风提高到摄氏500度以上。
没有蓄热炉,也可以炼铁或者炼钢,但是在生产效率上就完全不能相比了。根据英国人的计算,早期的蓄热炉,将送风提高到300多摄氏度,同样多的燃料铁的产量比冷鼓风增加了3倍。
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