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第168章 宿铁成钢之术(2 / 2)

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程咬金接下了这个差使:“老夫会安排工匠日夜打造出来。”

倪土点了点头,继续说到:“在火力与风力足够强劲的前提下,我们还要改造炼铁技术。家师曾在一次醉酒时,与道友争论谁的刀锋锋利时,家师曾念出一些比较罕见的炼铁技术。”

“哦?是何技术,请贤弟不吝赐教啊!”王玙说着,便从怀中掏出了毛笔和一捆纸张来,用舌头舔了舔毛笔尖便等待记录。

“家师说‘烧生铁精,以重柔铤,数宿则成钢’,就是说,选用品位比较高的铁矿石,冶炼出优质生铁,然后,把液态生铁浇注在熟铁上,经过几度熔炼,使铁渗碳成为钢。又言及先把生铁和熟铁以灌钢法烧炼成钢,做成刃口,然后借用双液淬火法‘以柔铁为刀嵴,浴以牲之溺,淬以牲之脂’这样做出来的刀称为‘宿铁刀’,极其锋利,能够一下子斩断铁甲。”

“如此神器就是贤弟之前说的陌刀的锻造之术?”程政兴奋地问到。

倪土点了点头:“正是!”

“双液淬火法?平日里工匠们用的只有水啊,却没有想到过用什么双液。”

倪土笑道:“这真是为何精钢出现的少的缘由。老工匠们应该知晓用不同的水作淬火的冷却介质,可以得到不同性能的刀。先在冷却速度大的动物尿中淬火,然后再在冷却速度小的动物油脂中淬火,这样可以得到性能比较好的钢,避免单纯使用一种淬火,防止工件开裂和变形,使其有一定的韧性。这就是宿铁刀和双液淬火法的结合。”

“但这样的前提是会采用一种叫灌钢法的技术。”

“属下愿闻其详。”王玙简直对这个知识渊博的小子敬佩地五体投地了。长久以来,他在冥思苦想如何提高钢铁精度,没想到听到倪土的一席话后,才知道自己的思维太过局限了,老是在一个小圈子里绕弯弯,而没有大跨步出来,去研究别的法子。

而倪土这么一说,让他的视野大为开阔起来。

“灌钢法操作简便,容易掌握。要想得到不同含碳量的钢,只要把生铁和熟铁按一定比例配合好,加以熔炼,就可获得。”

至于什么生铁作为一种渗碳剂,因熔化后温度高,加速向熟铁中渗碳的速度,缩短冶炼时间,提高生产率,还有熟铁因为碳的渗入而成为钢,生铁由于脱碳也可以变成钢,增加了钢的产量,倪土担心什么碳啊脱碳的,他们听不懂,便没有提及。

“我再提个建议。”

“请大师教诲!”

一向桀骜不驯的王玙竟然完全折服在倪土面前,自然让一旁的程咬金和程政大为欣喜。

倪土继续说到:“灌钢法里面有一个诀窍,那便是以熟铁为料铁,置于炉中,将生铁板放在炉口,当炉温升高到一千三百度左右,生铁板开始熔化时,既用火钳夹住生铁板左右移动,并不断翻动料铁,使料铁均匀地淋到生铁液。这样,既可产生很好的渗碳作用,又可产生剧烈的氧化作用,使铁和渣分离,生产出含渣少而成份均匀的钢材。这些可是打造陌刀的绝佳材料。”

“呜哈哈……如此一来,我大唐又要驰骋疆场,所向披靡了!”程咬金高兴地大笑起来。

脸上的精光让他瞬间年轻了不少。

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