第九百六十九章 点钢枪(1 / 2)

军中开始打造兵器了,李孟羲从乡间收拢了不少劣铁,凑到了铁料之后,凑一窑用焦炭把生铁炼制成铁水,然后浇铸进模具里浇铸成枪头。

因为焦炭这个利器,枪头的生产效率极高,一窑下来,浇铸出枪头一万三千有余。

等铁件凉了,李孟羲把成品抽捡了一些检查。

生铁所铸造的枪头不管如何,模样足够规整。

本着容易生产容易制作考量,枪头是套筒结构,这种枪头找根棍直接就能装上,比扦插式枪茎方便多了。

已知,铸造品结构疏松,不够坚固,又一支,枪头和刀剑相比,枪头短小,对韧性要求不高,枪的攻击方式主要是刺,刺击更多的是靠硬度,而又因,生铁熔点低,所以铸造时,多用生铁,而生铁含炭量高,恰好硬度强韧性弱。铸铁与枪头的性能需要暗合,所以,铸造兵器的技术,能且只能用在枪头上,而没有铸造刀剑一回事。

铸铁枪头勉强可用,但只是勉强。

李孟羲拿着几根枪头互相铛铛的敲了敲,他没能听出来什么。

“鲁犁!”李孟羲朝旁边人问,“拿个锤子给我。”

匠营副官鲁犁赶紧拿着锤子来了,李孟羲接过锤子,把枪头用力的铛铛砸了几下,枪头成功被砸碎了。

如所见,枪头强度不太够。

李孟羲摸了摸下巴寻思了一下,得想办法改一下。

改进方法是,脱碳。

铠甲技术中,有一种批量生产的劣质铁甲片,匠人们用生铁浇铸出厚厚的铁甲片,然后把铁甲片放火上烧一阵,等甲片外层的炭脱去,外层就变成了熟铁,熟铁软韧,而里层生铁坚硬,这就使得甲片硬韧兼备,强度得以增强。

这种批量铸造甲片的问题是,因为大汉尚未大规模利用焦炭,因温度不够,铁水化的不开,流动性差,铁水流动性一差,就铸造不出纤薄的甲片,所以就只能铸造比较厚的甲片。问题就在这里,铸造甲片又厚又重,甲片结构疏松,哪怕外层脱了炭,使得变成外软里硬的结构,但是防御力提升仍极其有限。铸造甲不仅重,防御力还差,除了能大规模批量生产,除了生产效率极高这一点优势以外,其他没有任何优势。

铸造甲的技术缺陷如此,同样的问题,在铸造兵器这里也存在,不过,兵器方面却有补救之法。

李孟羲着人用木炭生起火,然后把枪头悬吊起来,使得枪头正好处于火焰的焰尖上加热。

个中原理,是这样,如同蜡烛,把一根木棍插到蜡烛里,两秒后把木棍拿出来,会发现,蜡烛与外焰接触的部分变黑了,而与内焰接触的部分没有灼烧的痕迹。这是因为,外焰与氧气接触充分,燃烧剧烈,温度高。

这个知识,是脱碳处理的核心原理,脱碳用的是木炭烧的火,要命的就是这个“木炭”,众所周知,木炭既会燃烧出火焰,也会在火焰中带有炭元素。也就是,炭火既能渗碳,也能把炭烧掉造成脱碳,那,该如何控制炭的渗入与脱去?答桉就在蜡烛原理这里。

在火焰外焰,燃烧极其充分,把铁件放在外焰,此时,炭烧去的速度大于炭脱去的速度,所以造成脱碳。

而把铁件埋在炭火里,炭火等同蜡烛的烛心,把铁件埋炭火之中,炭烧去的速度,小于炭渗入的速度,此时造成渗碳。

原理如此,李孟羲早已洞悉个中道理,所以他命人把枪头一定悬在火焰最焰尖的位置灼烧。

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