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第10章 铁范铸炮(1 / 2)

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要造火炮不是什么想当然浇筑一下就成功的,我国虽然金属冶炼的技术很早就有。但是赵昰问了工部和一些匠人,得到的答案却给他浇了一盆冷水。

南宋锻造钢材目前用的还是百练法和炒钢法。所谓百炼就是田独村作坊用的那种,把铁矿加热到一千度,取出海绵铁,进行反复锻打挤出其中的炭元素,从而提纯。这显然并不能做什么枪炮。

炒钢法要高级些就是把生铁加热到半固体半液体的状态,然后不停搅拌使铁充分和空气接触,用空气中的氧带走碳元素从而进行脱碳,再加上反复锻打之后得到合适的钢材。

那只能先搞铸铁炮了,毕竟明清的红夷大炮也是铸铁炮,那些影视作品里的西方海盗和东印度公司用的也是这个。其实滑膛炮用铜更好,但是铜比铁贵多了,而且是铸造钱币的重要材料。

赵昰躺在榻上辗转反侧,这铸铁炮说得容易,用泥范即可制作。可是现在也没有镗刀,这炮筒内部的圆度和光洁度根本没办法处理,这炮造出来射程也是堪忧。

而且融化生铁需要1300-1400度才能获得,靠木炭显然是不行的。还得去堆煤,烧焦炭。还要搞鼓风机,这一切都要从零开始,真是麻烦。铸造的事情再说了,先弄熔铁炉倒是紧要。

次日,赵昰便带着随从和几个工匠去往黎母河新城处查看,想从那里找个水文条件比较好的地方,搞个水车来带动熔铁炉。

新的海口城还看不出什么,人倒是不少,有官吏指挥着打桩子夯土,也堆了一些砖瓦玄武岩等建筑材料。

沿着河走了一段,工匠便说此处可以建水车,也便就定了下来。留下工匠领人先造水车,反正人多,造个水车也就一两天的事情。赵昰自己带着人又去了砖厂,这边第一个轮窑已经开始产砖,第二个正在建造。一个22门轮窑一天可产砖五万块,等两个都投入生产了,那么建城的速度将大大提高。

原先让烧制的五万块耐火砖已经堆放在一旁,要做的坩埚还在窑中尚未烧好。赵昰着人领了三百人,把耐火砖都挑去了在建的水车处。人虽然多,但是靠脚走肩挑的也是弄了半天。

等建筑材料都齐全了,赵昰又犯难了。这熔铁炉他只见过现代的,这宋代的自然是造不来的。差人到处去问,总算找了个范所的工匠说他会造,于是三日之后这铸炮厂也弄得七七八八了,只等堆的煤烧成焦炭便可开工了。

在赶工期的前提下,造圆炉烧焦显然是浪费时间。用的就是土法炼焦,把煤矿每一千石堆成一个半圆形,上面盖点茅草点燃即可。不过四五日便能取得焦煤,至于浪费掉的煤焦油和氨气只能算了,等以后造了圆炉再说了。这个方法最简单就是损耗大,一半的损耗率。不过急事从权现在顾不得那么多了。

至于如何铸炮赵昰也有了大概的方向,现代铸造件大多都是铁模,其实我国道光二十二年也发明了铁模铸炮法。这个方法不像泥范做一个砸一个费时费力,而且大小不一。铁模铸造法,最大优点就是炮筒大小一致,和现代工业一样一个模具可以反复使用,内壁光洁,只需要少许打磨即可。省时省料省人工。而且因为口径一致,对于炮弹和药包也可以做到标准化。堪称一次性投资终生享用的典范。

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