第一百五十五章 突破钢铁
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“诸位，大家都辛苦了，你们只管用心造火铳就是，其余的事情本爵处理！”
顾振华勉励了几句，然后就和葛匠师离开了火器厂，直接到了临近的炼铁厂。这里正是冒烟咕咚的，三座高炉排列在眼前，周围的空气无比的炽热，工匠们早都甩了一个大光膀子，但是每个人的身上还都是汗津津的，滴滴答答的流下来。
在高炉的不远处，还有十几个炉子，工匠师傅正在挥动着锤子，用力的敲打，火星四射，灼热的火星甚至会落在皮肤上面。因此这些工匠的胳膊和脸上全都是斑斑点点的烧灼痕迹，不过他们毫不在乎，依旧敲打如故。
每个行业都有艰难，这些工匠更不例外！
在坩埚法炼钢发明之前，中国的炼钢技术在世界上算是最先进的，明朝更是将灌钢法发展到了巅峰。
根据唐顺之的记载：“以生铁与熟铁并铸，待其极熟，生铁欲流，则以生铁於熟铁上，擦而入之。”也就是說，把生铁与熟铁放在一块冶炼，等到生铁熔化，铁汁欲流时，则將生铁水擦入熟铁中，灌钢就炼成了。
这正是大名鼎鼎的苏刚法，顾振华从南京讨来了不少的工匠，他们就有精熟此法的。只见一个粗壮的铁匠师傅将一块熟铁放在了坩埚之中，加热三分钟左右，又把一根生铁放入坩埚，继续鼓风加热。
等到生铁开始融化，用铁钳夹住生铁一段，将铁汁淋在熟铁上面，学徒这时候不断的翻动熟铁，均匀的吸收铁水，前后进行了两次，然后师傅将熟铁取出，开始大力的捶打锻造。
顾振华在一旁仔细的观察着每一个环节，他的眉头紧皱，这时候最靠边的刘铁匠已经打好了一块钢。
葛匠师急忙问道：“怎么样，钢口如何？”
刘铁匠痛苦的摇了摇头：“勉强吧，做刀剑不差，可是俺就是想不明白，这钢口怎么会比不上倭寇的东西呢，实在是邪门！”
刘铁匠十分痛苦蹲在了地上，抱着脑袋，一语不发。葛匠师也是摇头叹息。
“做活就是离不开好钢，偏偏又……哎！”老头重重的叹了口气。
顾振华摆了摆手，笑道：“大家伙不要沮丧，本爵刚刚观察了一下，咱们的炼钢技术，绝对是第一流的，炼不出好官的责任不在你们！”
“国公爷，那您说在哪里呢？”
“就在那！”顾振华用指了指旁边的一堆东西。
刘铁匠也急忙看过去，只见顾振华指的正是一堆石炭，他顿时脑袋就不够用了。
“国公爷，您说问题出在石炭的上面？”
“没错。”顾振华笑道：“在汉唐的时候，林木葱郁，大多有木头炼铁，可是宋朝以来，木材减少，就不得不用石炭代替，从此之后，钢铁的质量就下降了不少，再也造不出陌刀那样锋利的武器了！”
按理说使用煤炭是一种技术的进步，不过偏偏出了一点差错，那就是中国的煤炭普遍含杂质太多，古代人又没有脱硫的技术，因此炼出的钢铁质量就大打折扣。
刚刚顾振华注意到了一个学徒直接将煤炭加进炉子里，他才猛然惊觉，这就是中国钢铁质量下降的原因。
“国公爷，照您的说法，咱们是不是要重新使用木材炼钢啊？”
顾振华微微一笑：“可是试试，不过木材终究有限，最后的工夫还要用在这些石炭上面。”
葛匠师，刘铁匠，甚至在场的所有师傅，都不自觉的停下了手里的活计，傻傻的盯着顾振华，想要看看这位国公爷究竟有没有高招。
顾振华走到了煤炭前面，仔细看了看，其实解决这个问题不复杂，只要进行脱硫处理就行了，不过凭着现在的工艺水平，恐怕难度不小。
“这样吧，去请来几个烧木炭的师父，让他们试着给石炭加热，我估计会有效果！”
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