广东11选5

新聞資訊 / News
單螺桿擠出實驗
發布時間:2017-6-9 12:00:07  瀏覽次數:2048  所屬分類:公司新聞
單螺桿擠出實驗 
一、實驗目的與要求 

LEJIEDEJIBENJIEGOUJIGEBUFENDEZUOYONG,ZHANGWOJICHUCHENGXINGJIBENCAOZUO;TONGGUOSHIYAN,LIJIEJICHUCHENGXINGYUANLI,FENXIJICHUGONGYICANSHUDUISULIAOZHIPINCHANLIANGHEXINGNENGDEYINGXIANG。 

广东11选5ER、SHIYANZHONGDIANYUNANDIAN 

1, 擠出成型基本操作和擠出成型原理。 

2, JICHUGONGYICANSHUDUISULIAOZHIPINCHANLIANGHEXINGNENGDEYINGXIANG。 

广东11选5SAN、TIWENJIHUDONGSHEJI 

1, DANLUOGANJICHUJIJIEGOUHEJICHUCHENGXINGJIAGONGYUANLI。

2, JIESHAOJICHUJIPAIHAODEHANYI。 

广东11选53, YAOQIUXUESHENGGENJUGAOFENZIWULIHEJUHEWUGONGHUNYUANLIDUIJUTIDEJUHEWUSHEDINGJICHUGONGYICANSHU。 4, TAOLUNYINGXIANGZHIPINXINGNENGHECHANLIANGDEYINSU。

SI、SHIYANJIANGJIE 

1,擠出機各部分的結構和作用 
1) 傳動裝置。由電動機、減速機構和軸承等組成。具有保證擠出過程中螺桿轉速恒定、制品質量的穩定以及保證能夠變速作用。 
2) 加料裝置。無論原料是粒料、粉狀和片狀,加料裝置都采用加料斗。加料斗內應有斷料流、標定量料和卸除余料等裝置。 
3) 料筒。料筒是擠出機的主要部件之一,塑料的混合、塑化和加壓過程都在其中進行。擠壓時料筒內的壓力可達55MPa,工作溫度一般為180-250℃,因此料筒是受壓和受熱的容器,通常由高強度、堅韌耐磨和耐腐蝕的合金鋼制成。料筒外部設有分區加熱和冷卻的裝置,而且各自附有熱電偶和自動儀表等。 
4) 螺桿。螺桿是擠出機的關鍵部件。通過螺桿電轉動,料筒內的物料才能發生移動,得到增壓和部分熱量。螺桿的幾何參數,如直徑、長徑比、各段長度比例以及螺槽深度等,對螺桿的工作特性均有重大影響。 
5) 口模和機頭。機頭是口模和料筒之間的過渡部分,其長度和形狀隨所用塑料的種類、制品和形狀、加熱方式及擠出機的大小和類型而定。機頭和口模結構的好壞,對制品的產量和質量影響很大,其尺寸根據流變學和實踐經驗確定。 
2,實驗步驟 
1) 工藝參數控制 
溫度控制:塑料的擠出成型溫度包括料筒、機頭和口模等溫度控制,這些溫度控制與物料粘度的高低,對溫度的敏感性和高聚物聚集態等有關,一般來講,低粘度物料的機頭和口模溫度低,高粘度物料的機頭和口模溫度高,流動性好。 

ZHUANSUKONGZHI:DUIYUJICHUJIAGONGLAISHUO,LUOGANZHUANSUJIADA,ZEJIANQIESULVZENGJIA,RESUXINGSULIAORONGTIDATIDOUSHIFEINIUDUNXINGJIASULIAO LIUTI,QIZHANDUSUIJIANQIESULVDEZENGJIAERXIAJIANG,LIUDONGXINGTIGAOJICHUCHANLIANGYESUIZHITIGAO。DANSHIGUODADEJIANQIESULVRONGTIZHANDUGUODI,HUIZAOCHENGSHENGCHANCAOZUOSHANGDEKUNNAN,TONGSHIDIZHANDURONGTIZAILUOGANFANYAZUOYONGXIADAOLIU、LOULIULIANGMINGXIANZENGJIA,ZAIYIDINGCHENGDUSHANGYOUYINGXIANGLECHANLIANG,YOUSHI,SHENZHIHUICHUXIANLUOGANZAIGAOZHUANSUXIADAHUAXIANXIANG,YINCIYINGGAIBALUOGANZHUANSUKONGZHIZAIYIDINGFANWEINEI。CIWAI,ZAISHENGCHANGUOCHENGZHONG,YINGJINLIANGBAOCHILUOGANZHUANSUWENDING,BIMIANSHIKUAISHIMAN。FOUZE,JIANGHUIYINWULIAORONGRONGZHANDUBIANHUAGUODAERZAOCHENGCHULIAOBUJUN,YINGXIANGZHENGCHANGSHENGCHAN。

 2)KAI、TINGJICAOZUOJIANCHAJICHUJIDEGEBUFEN,QUERENSHEBEIZHENGCHANG,JIETONGDIANYUAN,SHEDINGJICHUWENDUCANSHU,JIARE。 DANGGEBUFENDADAOZHIDINGWENDUHOU,ZAIBAOWEN20-30FENZHONG,JIANCHAJITOULIANJIELUOSHUANSHIFOUSONGDONG,BINGCHENRENINGJIN,FANGZHILOULIAO。 KAIDONGJICHUJI,DIAOJIEZHUANSU。JICHUPINGWEN,JIXUJIALIAO,DIAOZHENGGEBUFENGONGYICANSHU,WEICHIZHENGCHANGCAOZUO。 GUANCHAJICHUWULIAOXINGZHUANGHEWAIGUANZHILIANG,JICHUWUJUNYUN、GUANGHUASHIDEGEDUANWENDUDENGGONGYITIAOJIAN,JILUYIDINGSHIJIANNEIDEJICHULIANG,JISUANCHANLV,ZHONGFUJIALIAOJICHU。 SHIYANWANBI,GUANBIZHUJIHEDIANYUAN。RUGUOTINGJISHIJIANJIAOCHANG,DUIREWENDINGXINGJIAOCHADESULIAOYIDINGYAOJIANGLIAOTONGNEIDESULIAOQUANBUJICHU,YIMIANXIACIKAIJISHI,YINSHENGWENHEBAOWENSHIJIANCHANGERYINQIREFENJIE,BIYAOSHI,DUIJITOU、LUOGANHEDUOKONGBANYINGCHAIXIEQINGJIE,DUIYUREWENDINGXINGHAODEWULIAOKEYIDAILIAOTINGJI。 

3, 實驗報告 
1) 列出實驗用擠出機的技術參數。 
2) 報告實驗所用原料及操作工藝條件,計算擠出產率。 
3) 討論:結合試樣性能結果,分析產物性能與物料、工藝條件及實驗設備操作的關系。影響擠出物均勻性的主要原因有哪些?怎樣影響?如何控制? 
4, 實驗注意事項 
1) 實驗前應充分預習,了解原料品種、規格,提出溫度控制范圍,了解擠出工

YI。 

广东11选52) RONGTIBEIJICHUZHIQIAN,RENHERENBUDEZAIJITOU、KOUMODEZHENGQIANFANG。JICHUGUOCHENGZHONG,YANFANGJINSHUZAZHI、XIAOGONGJUDENGWULUORUJINLIAOKOU。 3) ANCAOZUOCHENGXUKAIJI,ZHUYIQIDONGJICHUJISHI,ZHUANSUYAOHUANMANSHANGSHENG,TONGSHIZHUYIJINLIAOQINGKUANG。 4) CAOZUOSHIFENGONGFUZE,XIEDIAOPEIHE,ZHUYIGUANCHAXIANXIANG,XIANGXIJILU,BINGJINXINGFENXI,RUFAXIANYICHANGXIANXIANG,GENJUFENXIYUANYINCAIQUSHIDANGCHULIFANGFA。

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