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魔界狂想曲- 第1756章 長弓與弩-玄幻奇幻-萬花小說
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第1756章 長弓與弩

  與桑村人的相處比較的愉快。


  所以他教的非常賣力。


  今天已經有幾十件陶器被燒好了,都是沒有釉料的比較低劣的陶器,外觀醜陋還容易滲水。


  但是至少它們確實能夠用來儲水、燉肉、吃飯。


  桑村人算是比較開心的。


  學會燒製陶器絕對值得開心。


  馬林這個晚上在教他們怎麽製作長弓。


  長弓力道猛,殺傷力強,狩獵猛獸的時候非常有用。


  它的尺寸越是大,威力越是強。


  這個尺寸包括弓身的長度、寬度、厚度。


  各人可以根據自己的臂力自發進行調整。


  四十磅到八十磅之間的弓都挺好用的。


  大力士說不準可以使用兩百磅的弓,射一箭比直接拿長矛捅還嚴重。


  他知道的關於製作弓的技術有兩個要點。


  一是一塊木頭哪麵做弓的正麵,哪麵做反麵是有其道理的。


  木頭靠近樹芯的那一麵適合做弓的反麵,也就是靠近射手的這一麵。


  木頭更遠離樹芯的那一麵適合做弓的正麵,也就是遠離射手的那一麵。


  樹芯位置木頭軟,缺少彈性,遠離樹芯位置木頭硬,彈性強,跟弓身的正反麵的要求正好非常契合。


  二是把弓身做好之後要訓弓,不要一下子就把它給拉彎。


  為什麽?

  猛一下就把木頭給拉的非常彎,不是容易產生‘哢嚓哢嚓’纖維斷裂的聲音麽?

  纖維斷的越多,它的彈性降低的越多,於是弓的威力減弱的越多。


  所以要逐漸把弓給拉的越來越彎,慢慢的拉,方便纖維進行自動調整,弦每拉到一個距離就暫停一下,讓弓身進行適應。需要花費一些時間。


  他把這兩條也告訴了桑村的人。


  馬林其實心情非常的好,因為桑村氣氛很好。


  這一晚上都在製作弓。


  這裏有個原始人是個貨真價實的大力士,他希望能夠有適合他的臂力的弓。


  他就是那種單臂舉得起一百五十多斤的重物的人。


  於是他就需要兩百磅的弓。


  於是弓身就應該給他做的更粗、厚、長。


  這種壯漢握著弓,比拿著火槍還猛。


  在藍星,長弓這種武器之所以被火槍淘汰,不是因為殺傷力不如火槍,而是因為訓練太消耗時間,長弓不容易瞄準,戰鬥的時候不容易熟悉戰術,而火槍非常容易上手。


  一晚上造不出一張弓來。


  但是明天這時候就能夠造出好幾張弓。


  其實桑族人要求沒有那麽高,三十多磅的弓他們就會很滿意了。


  馬林心裏禁不住又在考慮煉鋼的問題。


  現在有這麽遼闊的土地,這麽稀少的人口,資源完全用不完。


  所以煉鋼的時候浪費一點是不要緊的。


  也不用考慮環境汙染的問題。


  他們方圓幾百裏隻有四千人口,怎麽砍樹都砍不完,而且砍的遠不如長的快,必須定時放火燒樹林才能保證交通。


  怎麽使用木炭都不嫌多。


  於是他就在考慮一個問題。


  他的風箱把風推入煉鐵爐之前,可以製作一個長長的鐵管子,對這管子進行加熱,空氣通過管子,在進入煉鐵爐之前就被加熱到很高的溫度。


  比如說,三四百度。


  馬林認為這是個可行的做法。


  生鐵熔化成水是比較容易的。


  用生鐵鑄造出這種管子。


  管子的形狀可以是扁圓形的,比如說,三十厘米寬,十厘米高,三四十米長。


  他有點懷疑這樣子的管子的加熱效率到底好不好。


  實在不行就把管子給做的更扁一些,比如八厘米高,甚至五厘米高。


  他擔憂幾件事。


  首先是管子對空氣流動會形成多大的阻力。


  他用四個大漢推風箱,通過這麽長的管子之後產生的風是否還足夠大。


  如果足夠大的話,他可以把這管子給再加長一些。


  其次是管子對空氣的加熱效果是否夠好。


  他最擔心的就是溫度不足,煉不出鋼來。


  他希望從煉鐵爐中流出的鐵水溫度要足夠高。


  鐵水進入另一個爐子,上方用鼓風機吹來熱空氣,把鐵水中的碳給帶走。


  熱空氣的製作方式同上麵相似,鼓風機吹出的風經過很長的爐子加熱。


  馬林現在糊塗的問題是,對空氣的加熱效果,到底是這種很長的管子強,還是蓄熱室強。


  如果是這種管子強,他就盡量延長這種管子,直到溫度合格。


  如果是蓄熱室強,他就盡量多使用蓄熱室。


  先前他製作的蓄熱室效果不夠好。


  他是用暖氣片狀的黏土來吸熱和散熱。


  現在他想使用另一種結構,那就是蜂窩煤狀的黏土磚,中間帶有很多圓孔,熱氣通過這些圓孔把磚給加熱,冷氣通過這些圓孔會被磚給加熱。


  實在不行,兩個辦法混著來,先用火爐加熱很長的金屬管,金屬管的另一側通入蜂窩煤狀的蓄熱磚。


  蓄熱磚位於蓄熱室中,可以先用熱煤氣進行加熱,時間到就關閉熱煤氣,讓風箱推來的風通過蜂窩磚,得到加熱,進入煉鐵爐。


  他自己的觀點是,把通氣用的鐵管子做的足夠長,用很長的爐子對著鐵管子進行加熱就夠了。


  這隻是一種思考。


  到底是蓄熱室更好用,還是加熱長鐵管子更好用,亦或者兩者必須聯合才好用,他並不清楚,必須做過實驗他才知道。


  他一直被煉鋼問題給為難的夠嗆。


  鋼能夠給生活帶來巨大的改進。


  他們現在使用的鐵器都非常的鈍。


  如果能夠有鋼刀、鋼鐵器械,不管是狩獵還是日常生活都會非常的方便。


  他對煉鐵爐的溫度可能擔心的有些過多。


  第二天,前去磚窯。


  先把三個燒製木炭的爐子給打開,把木炭給取出來。總共得有一噸多。


  接著就前去嚐試這爐子是否能夠把生鐵給燒熔。


  他身上帶有鍛造出來的質量非常差的鐵斧、鐵矛尖、鐵箭頭之類的東西。


  隨便取三件放入一個黏土容器中。


  這個容器是在金水村燒製出來的,特別耐熱,怎麽燒都沒熔化過。


  向爐子中塞入木炭。


  爐子很高,是封閉式的。


  用兩個人推拉風箱。


  火焰呈藍色,這是一氧化碳在燃燒。


  溫度很高。


  這個顏色的火焰肯定可以把生鐵熔化。


  因為生鐵的熔化溫度大約是一千兩百多度,比燒製釉質的溫度要低。


  他都給陶器上釉了,自然是能夠把生鐵給燒成鐵水了。


  先前為什麽總是燒不出鐵水來,大約是因為他運氣特別差,每次都出問題。


  他這個爐子的溫度確實不錯,半個鍾頭左右,生鐵便有熔化的跡象。


  又是一個多鍾頭,生鐵已經非常接近鐵水。


  又是一個鍾頭。他確定生鐵完成成為了鐵水。


  想了一下,用劈裂的木棍把容器給夾出來,把鐵水倒到一個陶土做的模子上。


  其實就是一塊黏土,上麵有個凹槽,呈匕首狀。


  鐵水填滿凹槽後,馬林澆冷水進行冷卻。


  於是便形成了一把鐵匕首。


  用手動砂輪進行打磨。


  可以變得比較鋒利。


  然後馬林非常想嚐試下一件事。

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