第一千零六十二章 铬矿困境,铣刀(一更)
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后湖,二炮局。
三块锈迹斑斑的铁板斜插在土里,铛地一声,铁锤落在一块铁板上,震得铁板嗡嗡震颤,连同表层不牢固的锈斑也被震掉。
胡元澄检查着铁板,摇了摇头,对一旁的陶增光、封善说:“这样不行啊,铬含量一旦过低,这铁板很难不被海水腐蚀,想要打造耐腐蚀铁板,必须要增加铬的含量。”
封善挠头,为了测试铬铁防腐特性,制造了几批不同含量的铬铁板,还麻烦水师打来海水,安排专人一个时辰五次浇淋,结果发现想要确保铁板不在三个月内出现明显锈蚀,至少需要在铬铁中加入大量的铬,而不是铸铁中微量的铬。
可北平密云的铬矿产量十分有限,即便是加大人力开采,一个月输京铬矿石也不过四千斤,而这些铬矿石提取出来的铬,还不到六百斤。
这个产量,给朱允炆打造个短剑什么的还没问题,想要支撑起神机炮、铁船制造,简直是天方夜谭。
陶增光转身看向身后,那里?有三个明亮的铁板,经大量海水长期浇淋依旧没有明显锈蚀,只要简单擦了擦,就如崭新一般。
一块铁板重一百斤,而里面含有的铬就达到了五十八斤,占比超出一半。打造一艘铁船,仅仅是船底所需要的铁板重至少五千斤,按照这个比例,就需要近三千斤铬,半年的产量。
这对于大明而言,几乎是不太现实的一件事。
“我们是否放弃对铬铁船的研究,转而研究铬铁神机炮、蒸汽机装置、火铳等。”
封善提议。
陶增光沉默了。
就目前铬矿的产量与供应来说,不面向铁船提供铬铁是最合适的,这样可以用有限的铬矿,投入到其他制造领域。
至于寻常铁船,只要加厚底部,刷上漆料,坚持用个三至五年也不会锈穿。虽然时间短是短了点,距离朱允炆十五年寿命的要求有些远,但没办法,咱们没这么多铬矿啊。
胡元澄叹了一口气:“除了铬,应该还有其他合金能增加抗锈蚀,铬矿留给用量少、效果更佳的位置吧,这是我们唯一合适的安排。”
陶增光踱步,忧心忡忡,最后坚定地说:“铬铁船不能放弃,我们需要先拼上所有的资源,支持铬铁船建造!”
“你清不清楚自己在讲什么?”
胡元澄看着陶增光,有些怀疑他此时的状态。
封善也疑惑不已,现在情况已经摆明了,若是发展铬铁船只,那二炮局想要用到铬矿,没有个八年、十年,想都别想。
如此奇异的金属,二炮局还没有研究透彻,全给了龙江船厂岂不是亏大了。
陶增光严肃地说:“我就问一句,纯铁船在海上能飘几年不被锈穿?”
“五年,也可能是三年。”
封善有些不确定。
陶增光微微点头:“那你们还记得郑和吗?”
胡元澄、封善自是记得郑和,如此人物,谁不知晓。
陶增光踢了踢一旁的铁板:“郑和是建文五年九月离开的,眼下是建文八年四月,近三年时间,他们依旧没有返航。若日后水师使
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