二百三十二章:超硬质合金
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这个温度,恰好是五种金属中,镍的熔。
烧结超硬合金,拥有极为复杂的步骤,而第一步就是粉末冶金中,很有难度的液相烧结。
粉末冶金和传统冶炼技术相比,有个较大的缺陷——材料孔径过大。
因为在烧结过程中,不能像钢炉一样,将金属融化。
它是金属粉末铸压成型,一旦融化变形,那就成了报废品。
液相烧结可以解决这个技术缺陷,根据金属熔不同原理。在金属粉末中掺入熔较低的金属,这样均匀分布在烧结件内部的低熔金属,会单一开始融化,渗透到烧结件的空隙内部。
温度设定完毕,叶青就听嗡地一声,整个烧结炉都开始微微颤动起来。
叶青退到了八丈远。
都说微波炉有辐射,眼前这玩意无论体积还是功率,都比微波炉强悍百倍,天知道有没有辐射。
炉内,超硬质合金的内部结构开始发生变化。含量8%的银白色镍粉,慢慢变成液态。
五分钟后,温度被调高了四十度。
这是金属钴的熔,当金属钴也转变为液态时,金属专家打开微波烧结炉,将这块已经变得漆黑地半成品取出来。
没要任何的工具,他就直接用覆了黑色隔绝装甲的双手取出。
隔绝装甲可以隔绝热量,金属专家将半成品硬质合金,放入加热到900度的渗碳介质中,进行渗碳处理。
渗碳处理可以让金属获得更高的硬度,和耐磨度。
后面还有回炉、淬火,低温回火几个步骤。
当一块黑如徽墨,表面摩挲有细腻的颗粒感金属板材,出现在叶青面前时候,时间已经过去了一个半小时。
叶青轻轻用锤子敲击这块乌黑的金属,传回地声音是“噔噔~”声,震的叶青手腕发麻。
叶青有些迫不及待地,让巨力苦工将这块超硬质合金搬到了工厂外面,自己则钻进巨神i型的驾驶舱中,准备测试它到底有多坚硬。
巨神i型的机械臂上,锁定了一台破碎锤和切割齿轮。叶青操作破碎锤,对搁在地面的超硬质合金发起打击。
“咣~咣~咣~”
破碎锤接触这块超硬质合金的一霎,叶青耳边跟着炸起了响雷。
圆锥形的破碎锤头,每一次接触,就溅起耀眼的火花。
地面也跟着咣~咣~震动,破碎锤可以轻易击碎磨盘大岩石的力量,却根本无法在这块超硬质合金板上留下痕迹。
冲击持续了七十多下,地面上的岩石都被震成了肉松粉。
可是叶青跳下车过去查看,发现超硬质合金表面,只有一个酒杯大小凹痕。
反倒是同样用合金材料打造的破碎锤,锋利的锤尖竟然被荡平。
换成切割齿轮,火花和泄洪闸开闸放水一样。等到切割齿轮硬生生被磨掉所有锯齿,超硬质表面,也只有浅浅的一道切割痕迹。
眼前发生的场景,让叶青张大嘴巴无法说话。
巨神i型的力量他最了解不过,可看样子即使再过一小时,也不可能将这块超硬质合金板材完全破坏。
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