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第74章 攻克难关(1 / 2)

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其实,汉中技术研究院早已在刘纬的指示下,开始了蒸汽机的先期研究了,并在某些领域,已经有了一定的突破!

我们都知道,中国古代的铜冶炼技术,可谓登峰造极,有大量出土文物可以证明!尤其是像后母戊大方鼎这样的国宝,器型之大,工艺之精湛,可谓世间所罕见!

这主要是因为铜的熔点较低,铸造起来,相对更加容易一些,即便在生产力水平落后的古代,也可以实现!可是,铁的熔点太高,要想实现与铜一样的冶炼铸造水平,就非常困难了!

那么,干脆用铜材制作蒸汽机,不行吗?也不是不行,像管道和阀门等部位,适当采用一些铜质材料,也未尝不可,但主体锅炉,必须用钢铁才行!因为铜的熔点太低,锅炉温度太高,主体会被烧穿融化,甚至发生爆炸的危险!

如今的汉中铁厂,早已具备了炼钢的能力,甚至可以用模具浇铸的形式,生产各种各样的纯钢兵器,技术已经非常精湛了,但是兵器体积都很小,钢水在迅速降温凝结之前,是完全来得及成型的!

即便不能成型,工匠们也可以通过锻打等方式,将热钢打造成所需要的器型,时间上完全来得及!可是锅炉这样的大家伙,若想一次成型,就十分困难了!

马钧他们试过很多次,可每每滚烫的钢水,倒入模具中,就会立刻降温凝结,还没等充满模具,就已经失去了流动性,甚至把模具都给撑坏了!

这个难题,始终无法解决,马钧也是急得如热锅上的蚂蚁一般,连续几个昼夜,不休不眠,思考对策,却始终没有办法,倒是后来在吃烤番薯的时候,突然灵光一现!

当时,马钧是心不在焉地正在思考问题,旁人递给他一个刚刚烤好的番薯,马钧下意识地拿手接了过来,却被烫得一声尖叫!刚烤熟的番薯直接用手拿,那还能不烫着么?可是,马钧在扔掉番薯以后,却突然想到了一个绝妙的主意!

以往钢水总是被倾倒入冰冷的模具中,因为温差太大,所以导致很快凝固,失去了流体性,如果把模具也加温加热,保持在一个相对较高的温度,是不是就能避免钢水迅速凝结了呢?

想到这里,马钧兴奋难抑,连忙赶回车间,指挥着工人们,再度进行试验!

这一次,他要求在模具之下,加炭火燃烧炙烤,以便让模具始终保持高温状态,然后再倾倒铁水……结果,却失败了,因为经过炙烤的模具,过早干燥变硬,再遇到滚热的铁水,竟立刻炸裂开来!

因为马钧的这个疏忽,导致在试验过程中,滚热的铁水四溅而出,几名炼钢工人被当场烫伤,其中一人还因为伤势过重,最终没能抢救回来,而搭上了性命!

付出的代价太过惨烈,马钧都有些望而却步了,甚至十分自责,愧疚难抑,关键的时候,刘纬出现了!他一方面派人做好受伤工人的抚恤工作,另一方面继续鼓励马钧不断尝试,并开出了诱人的奖励条件,激励大家不要气馁,不惧艰险,继续努力!

受到汉王的鼓舞,马钧终于重新振作,工人们的热情也被调动起来,再度投入到锅炉铸造的研发工作中!不过,这个技术难题,还是很难攻克,刘纬也不得不给马钧一些启发才行!

以往制造武器时,所使用的模具,都是陶泥所制!用泥塑型,在其尚未干透的情况下,以铁水浇铸,高温会使陶泥瞬间干透成型,待冷却后,再将这一层模具砸碎,便得到了钢制武器!可这一招,用来浇铸锅炉,却不灵了!

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