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三百七十四章:全面落后的技术

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因为金属熔的不同,需要在两种金属的粘合处,添加一层能够黏住两种材料的粘合剂。就这样,想要烧结出一件合格的产品,往往都要报废十几件产品。

先天的不足,注定了无论是异种金属焊接,还是异种金属烧结,都只能是很小众很高深的加工技术。

可是就在今天下午,日理工大学的一名研究生,用银和铜两种金属粉末,在不加入粘合剂的情况下,一次成功地烧结出堪称完美的异种金属圆环。

偏偏这件产品,不是中看不中用的样子货。

那名学生为了证明这,已经将他的作品,交给中云大学这边,用拉力测试仪检测过。

“小林井教授,天色已经不早,我想贵校的学生一定饿了吧,今晚食堂特意为大家准备了片皮烤鸭,不如让学生们边吃边聊?”蔡晨宁教授无可奈何地打起了马虎眼,也变相承认中云大学的学生们,拿不出类似的粉末冶金技术。

日理工大学派出的是一名研究生,那么按照约定成俗的规则,中云大学这边,只能派出研究生或大学生。

蔡晨宁教授总不能自己亲自上场。

“不饿不饿。”小林井抬起了头,眼神中射出了两道得意光芒:“田中,你跟他们交流一下,异种金属的烧制技巧。”

那名手持金属环的学生,骄傲抬头,目光环视全场:“不同金属之间,物理性能差异很大。我使用的一次烧结技术,是基梯度接头原理。先将两种金属粉末逐一置于模具中并预加压力成型,随后采用电热炉烧结过程中,对控制温度的要求最为苛刻。”

“银的熔961度,铜的熔1083度。如何找到这两种金属熔的平衡诀窍,在两种材料粉末,施压的压力不同之上。因为材料之间的空隙密度,决定了融化速度。”

中云大学这边的学生们,一个个避开田中的目光。

败了就败了吧,谁让技术不如人呢?

好在这位田中学生,没有借机秀一波优越感,否则他们找个缝钻进去的心都有了。

田中的人不错,不仅把技术要讲出来了,还不打击人。

是这帮学生太天真了,日理工大学远渡重洋而来,不打击人,那不是白来了?

“只是……”

“在操作中,我发现了几处问题。”

这位叫田中的学生,忽然话锋一转,语气变得骄傲起来:“你们的设备太落后了,在我们学校的实验室。压胚用的冲压机床,是山崎马扎克公司的多角度数控冲床。”

“你们这台设备,角度不可调也就算了,竟然连冲击系数也不可调。”

“我们学校,堆在仓库中的报废设备,也比你们这台先进。”

“还有这些金属粉末,我们早在上世纪六十年代,上田良二教授,就发明了超微金属纳米粒子制备技术。”田中捻了捻手指上残留的金属粉末:“可是你们依旧拿这种粗如面粉的东西用。”

“最关键的电热烧结炉,它甚至连我们上个世纪的技术水平都不如。实验室就要有实验室的样子,用这种淘汰设备,如何能推动粉末冶金技术的进步?”16-10-3104:42:08

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