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化学
内容:48V50A电源(其实我是想测试电源 ...析氯环境
石墨
阳极还行。,析氧的话高强
石墨
也是一滩烂泥。
铝管发动机加上石墨喷嘴效果会怎么样那?
wuym2
14年2个月前
回复于
喷气推进
内容:对电极
石墨
,就是和铝管连接的方式还在研究中,所以想请教大家。,
石墨
是淘宝上定的
回 20楼(skyline) 的帖子
demon97111
11年6个月前
回复于
强激光
内容:那是
石墨
和粘土烧结的 哪来的铅粉。。。
zvs融化紫铜(视频)
xiaotian99
10年0个月前
回复于
极客DIY
内容:请问一下豆腐同学要感应加热
石墨
,感应电流频率是多少,电容、电感还有感应线圈的参数配置是多少?,为什么我的感应线圈都烧红了,里面的
石墨
只是温的。
一个不切实际的立项
路人114514
1年1个月前
回复于
语言文学
内容:好的,谢谢您的提醒😁感觉金属材质不容易耐高温,
石墨
又确实太脆了,因此也不清楚用哪种材料好有些熔点低但是抗氧化行强的金属可以用吗,看有的大佬用的304不锈钢
【试车成功】15mm AP/HTPB 微型固体火箭发动机
刺猥
7年5个月前
回复于
喷气推进
内容:引用 3410260854@XXXXXX:不知道你那个发动机如果去掉
石墨
成本要多少
石墨
成本都不算什么,重要的是加工工时,大概12个小时左右一台,包括燃料制作
关于电解硫酸铜溶液的一个问题,求教!!!
xiaobai152
11年2个月前
回复于
化学
内容:qwe 发表于 2013-11-7 13:11 这些碳棒是用粉末压制或粘的,如果你想用碳电极 1去卖电机或修电钻的地方买碳刷 2把
石墨
坩锅锯成条 专用的也会有这个现象,只不过小一点而已。。,以前买过光谱纯
石墨
电极照样变细
LH4-B 设计图全公布 (一种不错的非金属固体发动机设计)
arminarlart33
9年7个月前
回复于
喷气推进
内容:引用 FROZEN巨擘:其实
石墨
也是想过的,只是我现在的加工水平,无法做出想要的喷管,就放弃了...,其实买
石墨
棒 用电钻就能加工。。。
【廣局神作】石墨喷喉-6061中型火箭发动机
风枫
12年9个月前
回复于
喷气推进
内容:
石墨
的导热性很好…如果
石墨
合铝材之间没有适当的隔热材料的话,当心发动机工作产热把铝材烧软化了,导致破裂或者螺纹处粘结…
感应加热石墨怎么没有反应哦,感应线圈都烧红了?
xiaotian99
10年0个月前
回复于
高电压技术
内容:引用 潜伏:还是太高,你拿块铝试试 好象不关电阻的事哦,铁,铝的电阻都很小,
石墨
也是啊。,但是通常铁很容易被感应加热,是因为铁有磁性,而铝和
石墨
没有。
菊花水晶and一块奇特的水晶
用户已注销
16年0个月前
回复于
地理与地质
内容:黑色的一般是
石墨
...在那种双头浮生水晶里很多见...
制造人工钻石 高温高压的设备是不是很贵。
liweichian
8年7个月前
回复于
机械与工具
内容:以前看过一本书,说的欧洲的某人把
石墨
颗粒混进钢水里,然后倒入水中急冷,利用钢水的高温和冷却时急速的收缩,可以制造出金刚石,而且获得了专利。,这个就需要一个温度高一点的炉子,耐火坩埚和高纯
石墨
。
据说日本发明了用木炭和水就能发电的电池
freeflying
10年5个月前
回复于
电气电工
内容:碳是个神奇的交际花,
石墨
烯一切可能
回 11楼(wuym2) 的帖子
lilith
14年2个月前
回复于
喷气推进
内容:此外,
石墨
作为喷管的话,我曾经考虑过,结果也有现成的,担心的问题是
石墨
的强度,在机加工时会不会有困难。。
轨道炮新想法
机锋
12年11个月前
发表于
电磁炮
内容:用叶片泵上的
石墨
片做轨道那东西耐高温又导电如何
将混有石墨烯的无水乙醇加入混有碳化硅的水中,为什么会出现视频中的这种现象?
超新星のktjc
10年8个月前
回复于
化学
内容:硝基丙三醇 发表于 2014-4-27 11:48 没把酒精放到水里边过吗,那样就会出现这种现象,
石墨
烯用来使现象更明显原理设什么?,为什么
石墨
烯疏水却可以在酒精中分散?
教你0成本自制媲美液态金属的散热材料
mark42
9年10个月前
回复于
极客DIY
内容:引用 法式油炸薯条:
石墨
的导热性能比硅脂好很多没错,
石墨
导热率大约100,顺晶面1000以上,硅脂导热率0.5。
铝空气电池制作教程
青铜
10年3个月前
回复于
化学
内容:静观&琪变 发表于 2014-9-16 20:53 低电阻木炭不难做,按照教程掌握技巧即可
石墨
电极是那种电池中的?,记得一号干电池中的
石墨
电极没这么大。
钻石结构的一个小疑问
kc地毯清洁员
11年7个月前
回复于
物理
内容:不是旁边的碳就是氧气了 像
石墨
一样 可能不规则 甚至可以不接
LH4-B 设计图全公布 (一种不错的非金属固体发动机设计)
arminarlart33
9年7个月前
回复于
喷气推进
内容:直接用
石墨
做称喉就好过于复杂的结构增加了重量和制造难度 而且PPR耐压高于PVC管即使是2层套管 我一直用PPR和
石墨
喷管 还可以重复使用2~3次
关于碳纤维发动机的问题
暮光之羽
5年9个月前
回复于
喷气推进
内容:所以要进行水压试验,如果经济条件允许的话可以定制缠绕壳体,或者就挑选缠绕管让商家钻孔(自己钻孔可能使纤维脱出),另外就是要做好隔热,事故通报XXXXXXXXXXXXXXXXXXXXXXXX/t/82362纯
石墨
喷管尺寸大的话会炸裂,,推荐电木
石墨
复合喷管(仅喷喉用
石墨
,利用
石墨
的耐冲刷性质)螺丝不推荐使用,螺纹会导致局部压强过大导致发动机撕裂,有种螺栓是这样的 怎么用我就不说了,另外其实可以用实心碳纤维棒当定位销用,顶级抗剪切,就是取下来的时候很麻烦
回 4楼(桓桓桓) 的帖子
20!Dopaminor
11年10个月前
回复于
机械与工具
内容:你家燒
石墨
小型轨道炮计划
三水合番
7年0个月前
回复于
电磁炮
内容:大电流滑动接触的话,
石墨
的电接触性能比不上铜甚至铝的……铜
石墨
复合材料不知道性能咋样不过讲真,没必要搞那么复杂……本来只是一个简单的轨道炮,结果谈到后面连2kA的可控硅都出来了……能动就行的话,弹丸弄一小条铜片弯个
小型轨道炮计划
Climent
7年0个月前
回复于
电磁炮
内容:引用 三水合番:引用 Climent:引用 三水合番:大电流滑动接触的话,
石墨
的电接触性能比不上铜甚至铝的……铜
石墨
复合材料不知道性能咋样不过讲真,没必要搞那么复杂……本来只是一个简单的轨道炮,结果谈到后面连,不就是把铜换成铜
石墨
,空气开关换成了可控硅嘛,这完全就是在原有基础上对材料做了替换嘛,当然了,这比原先的配置多了一个可控硅触发电路,如果你认为这也叫“复杂”的话……😂至于电枢,我个人认为不到一定规模(,电流)不需要特别注意电枢是问题,U型片也好,金属块也好影响都不大,一旦规模比较大,U型片变等离子体,金属块变点焊机😂真的有可能😂😂😂关于“铜
石墨
在轨道炮的应用条件下更耐烧蚀”,这个是是来源于某篇文献还是你的某次实验,至于复不复杂嘛,可能你对复杂的标准更高吧😂“铜
石墨
在轨道炮的应用条件下更耐烧蚀”这个事按你的话讲是我的主观臆测,或者更具体的说是我在了解了铜
石墨
相关特性说明和应用之后希望做但是还没能做的一个实验,所以我只是推荐了这一结构,,希望有人能进行这一实验,并没有说铜
石墨
“一定”比纯铜优越啊😂
有一个石墨材料
大仙
8年9个月前
回复于
喷气推进
内容:话说
石墨
板不用证件吧。,特殊用途的
石墨
算军民两用产品受到出口管制
流言终结者:南部邦联火箭
拔刀斋
15年4个月前
回复于
喷气推进
内容:哪弄来的
石墨
引用第4楼北落师门于2009-09-28 17:36发表的 :我去年就看过了 [s:92] 当初还受这个的启发做了个
石墨
喷口,结果燃料没解决,一直没飞.......
手工制作石墨喷管指南
法式油炸薯条
9年7个月前
回复于
喷气推进
内容:引用 especisally:好像很不错,不过用螺丝固定的话会不会因为
石墨
太脆而和管子连不稳?,不清楚,pvc的话缩口就好,金属机的话,小的用螺纹,大的用
石墨
做喷喉
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