皇冠即时比分

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氟塑料化工泵材料要求

水泵原理 卧泉泵业 823浏览 0评论

氟塑料化工泵壳体材料的主要要求如下:

①YIDINGDEJIXIEQIANGDU;

②QIMIXINGHAO,BUYINGSHIDUOKONGJIEGOU,BUNENGYOULIEFENG、XIAOKONGYIJINENGZAOCHENGLOUQIDEQITAQUEXIAN;

皇冠即时比分③JIAODIDECHUQISULVHESHENTOUSULV;

皇冠即时比分④ZAIGONGZUOWENDUHEHONGKAOWENDUXIADEBAOHEZHENGQIYAYAOZUGOUDI;

⑤HUAXUEWENDINGXINGHAO,BUYIYANGHUAHEFUSHI,BUYUXITONGZHONGDEGONGZUOYEXIU(RUYOU、GONG)QIHUAXUEZUOYONG;

皇冠即时比分⑥WENDUWENDINGXINGHAO,ZAIYIDINGWENDUFANWEINEINENGBAOCHIQIZHENKONGXINGNENGJIJIXIEQIANGDU;

⑦JIAGONGRONGYI,YOUJIAOHAODEHANJIEXINGNENG,JIAGEBIANYI。

 

CHANGYONGQIAOTICAILIAOYOULIANGDALEI:JINSHUHEBOLI。JINSHUDEYOUDIANSHI:JIXIEQIANGDUHAO;RONGYISHIXIANGAOJINGDUDEJIAGONG。BOLIDEYOUDIANSHI:TOUMING,BIANYUGUANCHASHEBEINEIBUQINGKUANG;DIANJUEYUAN;KEDUINEIBUDEJINSHULINGJIANYONGGAOPINJIAREDEFANGFACHUQI、NENGYONGGAOPINHUOHUAQIANGJIANLOU;JIAGONGFANGBIANDENG。BOLIDEQUEDIANSHIZHICUIYISUI。

1.JINSHUJIHEJIN

皇冠即时比分JINSHUZHENKONGQIAOTICAILIAOZHUYAOYOUYITIE、TONG、LVWEIJICHUDEJINSHUJIHEJIN。RU:DITANGANG、BUXIUGANG、WUYANGTONG、ZITONG、LVYIJIFULV、TONG、NIEDEGANGHUOTIECAI。QIZHONGBUXIUGANGNAIXIUSHI,YOUJIAODIDECHUQISULV,SHICHANGYONGDEYOULIANGDECHAOGAOZHENKONGQIAOTICAILIAO。QINGZAILVZHONGDEKUOSANSULVDI,GUHONGKAOHOUDECHUQISULVDI,SHIJINHOUYOUXIWANGFAZHANDECHAOGAOZHENKONGQIAOTICAILIAO。

2.BOBOHESHIYING

BOLIDEZHONGLEIHENDUO,CONGZHENKONGJISHUDEJIAODULAIKAN,DATISHANGKEFENWEI:SHIYINGBOLI、“YING”BOLI、“RUAN”BOLISANLEI。RUANBOLIYOUJIAODIDERUANHUAWENDU(490℃ -610℃)HEJIAODADEXIANPENGZHANGXISHU(82×10-7K-1-92×10-7K-1)。YINGBOLIYOUJIAOGAODERUANHUAWENDU(555℃YI806℃)HEJIAOXIAODEXIANPENGZHANGXISHU(35×10-7K-1-50×10-7K-1)。SHIYINGBOLIRUANHUAWENDUGAODA1500℃,XIANPENGZHANGXISHUZHIYOU5.8×10-7K-1。

由于软玻璃价格便宜,氮渗透速率很低,所以常选作电子管的壳体材料,这类玻璃可与铂丝、杜美丝封接。石英玻璃价格贵,氦渗透速率最高,只用在高温设备和要求透过紫外光的氟塑料化工泵中。硬玻璃软化温度适中,便于加工和烘烤除气,耐温差性能好,是真空技术中最常用的玻璃,硬玻璃按不同的膨胀系数又可分为钨组玻璃和钥组玻璃。

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