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拉力机简述及如何选择适合的型号?

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YI、SHOUXIANYINGKAOLVXUYAOCESHICAILIAOLALIFANWEI: LALISHIYANJIFENWEIDANZHUSHIHESHUANGZHUSHILIANGZHONG,YIBANDANZHUDEHEZHONGYUAN(RONGLIANG/CHUANGANQI’>CHUANGANQI)ZAI500KGYINEIERQIESHUANGZHUDEDOUZAI500KGYISHANG,SHUANGZHULALISHIYANJIYONGZAIDIANXIANDIANLAN,JIXIE,XIANGSUJIAODENGXINGYEJIAODUOLALIFANWEIDEBUTONG,JUEDINGLESUOSHIYONGHEZHONGYUAN(CHUANGANQI)DEBUTONG,YEJIUJUEDINGLELALIJIDEJIEGOU,DANCIXIANGDUIJIAGEDEYINGXIANGBUDA(MENSHICHUWAI)。DUIYUYIBANRUANBAOZHUANGSHENGCHANCHANGJIA,LALIFANWEIZAI200NIUDUNDEJIUYIJINGZUGOU。YINCIYEJUEDINGLECAIYONGDANBEISHIDEJIUKEYILE。 YUDANBEISHIXIANGDUIYINGJIEGOUDESHIMENSHIJIEGOU,TASHISHIYINGBIJIAODADELALI,RUYIDUNHUOYISHANG,RUANBAOZHUANGCHANGJIAJIBENYONGBUZHE。  

ER、 SHIYANXINGCHENGDEWENTI。 GENJURUANBAOZHUANGBOMODEXUYAOCESHIDEXINGNENGHEYAOQIU,XINGCHENGZAI500-600mmJIUKEYI。CAILIAOSHENZHANGLVCHAOGUO1000%DEKEYIXUANYONGXINGCHENG1000HUOSHI1200mmDEXINGCHENG。  

SAN、 BIAOZHUNPEIZHIWENTI。 ZHINENGHUADESANZHONGJIBENPEIZHI:ZHUJI、WEIDIANNAO、HAIYOUDAYINJI,RUGUOWEIDIANNAOGONGNENGQIANGKEYIZHIJIEDAYIN。LINGWAIYEKEPEIBEIPUTONGDIANNAO。YOULEDIANNAO,JIUKEYIJINXINGFUZADESHUJUFENXI,RUSHUJUBIANJI,JUBUFANGDA,KEDIAOZHENGBAOGAOXINGSHI,JINXINGCHENGZUSHIYANGDETONGJIFENXI。RUPEIYONGDIANNAO,CHANGJIAYINGJIPEIBEIXIANGYINGRUANJIANKONGZHIXITONG。  

SI、SHUCHUJIEGUO。 SHIYANJIEGUOSHUCHUJIEGUOKERENYISHEZHI:ZUIDALIZHI、SHENZHANGLV,KANGLAQIANGDU、DINGLISHENZHANG、DINGSHENZHANGLIZHI、QUFUQIANGDU,DANXINGMOLIANG、ZUIDASHIYANLI8XIANG。ZHEIKEYISHUOSHIDIANNAOCAOZUOSHI,SHUCHUDEZUIQUANMIANDEJIEGUO。GUOWAIYIXIECHANGJIADECHANPIN,YIBANKEYISHUCHUZHEI8XIANG。GUONEIYOUDECHANGJIAKEYISHUCHU5-6XIANG,YOUDECHANGJIAJIUZHINENGSHUCHUZUIDALIZHI,PINGJUNZHI,ZUIXIAOZHISANXIANG。 

WU、ZAIKEZUOSHIYANXIANGMUSHANG。 RUANBAOZHUANGYAOQIULALIJIYIJIDUOYONG,JIZAIPEIBEIBUTONGJIAJUDEJICHUSHANG,KEZUOLASHEN、YASUO、WANQU、SILIE、JIANQIE、180DUBOLI、90DUBOLISHIYAN。  

LIU、CHANPINJIXIEZHUYAOPEIZHI: CHUANDONG,YOUGUNZHUSIGANGCHUANDONGHETXINGLUOGANCHUANDONG,QIANZHEANGGUI,YONGYUGAOJINGDU,CESHIZHONGFUXINGGAO;HOUZHEBIANYI,YONGYUDIJINGDU,CESHIZHONGFUXINGDI。 SIGANG,DUILALIJINGDUCELIANGJUYOUJUEDINGZUOYONG。YIBANDEYOUGUNZHUSIGANG,TIXINGSIGANG,YIBANSIGANG。QIZHONG,GUNZHUSIGANGDEJINGQUEDUZUIGAO,DANSHIQIXINGNENGDEFAHUIYAOKAODIANNAOSIFUXITONGCAOZUOCAINENGFAHUI,ZHENGTAOJIAGEYEBIJIAOANGGUI。CAIYONGYIBANSIGANGHETIXINGSIGANGJIUKEYIDADAORUANBAOZHUANGSUOYAOQIUDEJINGDU,JIZHENGFU0.5%JINGDU。 CHUANGANQI,ZHUYAOCHENGBENZAIYUSHOUMING,GUANGDIANGANYINGSHIQIZHONGBIJIAOXIANJINDEJISHU,YIBANKEYONGSHIWANCIYISHANG,JINKOUHEGUONEIBUFENHEZICHANGJIAKEYIDADAO。  

QI、SHIYANSUDU。 GUOJIABIAOZHUNGUIDINGSHIYANSUDUWEI300mm/min, SHIMIANSHEBEIYOUDEZAI10~500 mm/min,YOUDEZAI0.01~500 mm/min,QIANZHEYIBANSHIYONGPUTONGDIAOSUXITONG,CHENGBENJIAODI,CUCAOYINGXIANGJINGDU;HOUZHESHIYONGSIFUXITONG,JIAGEANGGUI,JINGDUGAO,DUIYURUANBAOZHUANGQIYE,XUANYONGSIFUXITONG,DIAOSUFANWEI0.5~500mm/minDEJIUZUGOULE,ZHEIYANGJIBUYINGXIANGJINGDU,JIAGEYOUZAIHELIFANWEIZHINEI。  

BA、CELIANGJINGDU。 JINGDUWENTI,BAOKUOCELIJINGDU,SUDUJINGDU,BIANXINGJINGDU,WEIYIJINGDU。ZHEIXIEJINGDUZHIZUIGAODOUKEDADAOZHENGFU0.5。DANDUIYUYIBANCHANGJIA,DADAO1%JINGDUJIUZUGOULE。LINGWAI,LIZHIFENBIANLVJIHUDOUNENGDADAOSHIWANFENZHIYI(SIFUXITONGKONGZHIDEDOUNENGDADAOZHEIGEYAOQIU) YISHANGJIBENPEIZHIZAISANWANWUQIANYUANZUOYOU。 MUQIANSHICHANGSHANGYONGYUJIANCECAILIAOLASHENXINGNENGDELALISHIYANJIHENDUO,DANSHIBINGFEISUOYOUDESHIYANJIDOUSHIHERUANBAOZHUANGCAILIAODELASHENSHIYAN,BENWENJIEHEWOGUOCAILIAOJIANCEBIAOZHUN,FENXILEXUANZERUANBAOCAIJIANCEDELALIJISHIYINGYOUQIGUANZHUDEZHIBIAO。 SULIAOHEXIANGJIAODELASHENXINGNENGSHIQILIXUEXINGNENGZHONGZUIZHONGYAO、ZUIJIBENDEXINGNENGZHIYI,TAZAIHENDACHENGDUSHANGJUEDINGLEGAIZHONGSULIAOHEXIANGJIAODESHIYONGCHANGHE。  LASHENXINGNENGDEHAOHUAI,KEYITONGGUOLASHENSHIYANLAIJIANCE。  

(1)、GAOFENZIJUHEWUDELASHENXINGNENG ZUOWEICAILIAOSHIYONGSHIYAOQIUGAOFENZIJUHEWUJUYOUBIYAODELIXUEXINGNENG。KEYISHUO,DUIYUGAOFENZIJUHEWUDEDABUFENYINGYONGERYAN,LIXUEXINGNENGBIQITAWULIXINGNENGXIANDEGENGWEIZHONGYAO。 GAOFENZIJUHEWUJUYOUSUOYOUYIZHICAILIAOZHONGKEBIANXINGFANWEIZUIKUANDELIXUEXINGZHI,ZHEISHIYOUYUGAOJUWUYOUZHANGLIANFENZIZUCHENG,FENZIYUNDONGJUYOUMINGXIANDESONGCHITEXINGDEYUANGU。RUGAOJUWUCAILIAOJUYOUXIANGDANGGAODESHENZHANGLV,YIBANPEDEDUANLIESHENZHANGLVZAI90%~950%(QIZHONGXIANXINGDIMIDUJUYIXILLDPEDESHENZHANGLVJIAOGAO),TONGGUOTESHUDEZHIZUOGONGYI,BUFENCAILIAODESHENZHANGLVKEZAI1000%ZHISHANG,ERPUTONGGAOJUWUCAILIAODEDUANLIESHENZHANGLVYEDUOZAI50%~100%ZHIJIAN。TONGCHANGDUICAILIAODELASHENXINGNENGYAOQIUJIAOGAODEYOURESHOUSUOMOYIJILASHENMODENG。  

(2)、LASHENSHIYAN LASHENSHIYAN(YINGLI-YINGBIANSHIYAN)YIBANSHIJIANGCAILIAOSHIYANGLIANGDUANFENBIEJIAZAILIANGGEJIANGEYIDINGJULIDEJIAJUSHANG,LIANGJIAJUYIYIDINGDESUDUFENLIBINGLASHENSHIYANG,CEDINGSHIYANGSHANGDEYINGLIBIANHUA,ZHIDAOSHIYANGPOHUAIWEIZHI。 LASHENSHIYANSHIYANJIUCAILIAOLIXUEQIANGDUZUIGUANGFANSHIYONGDEFANGFAZHIYI,XUYAOSHIYONGHENGSUYUNDONGDELALISHIYANJI。ANZAIHECEDINGFANGSHIDEBUTONG,LALISHIYANJIDATIKEYIFENWEIBAICHUISHILALISHIYANJIHEDIANZILALISHIYANJILIANGLEI,MUQIANSHIYONGJIAODUODESHIDIANZILALISHIYANJI。  

(3)、电子拉力试验机选择指标 由于软包装材料主要是高分子聚合物或它的相关材料,如前所述高聚物材料的伸长率远远优于金属、纤维、木材、板材等材料,因此检测高分子聚合物的拉力机就与通常的材料拉伸性能检测拉力机有一定的差别,尤其需要注意的是电子拉力机的有效行程以及试样夹具两方面。3.1 有效行程 在进行拉伸试验时,所用试样的尺寸虽然小,但材料的伸长率普遍比较高,因此用于检测软包装材料的拉伸性能需要配备行程较大的拉力机,否则夹具运行可能会超过行程的使用极限、造成设备的损坏。 GB13022-91《塑料薄膜拉伸性能试验方法》中给出的断裂伸长率或屈服伸长率(εt,单位是%)的计算公式,εt=[L-L0*100]/ L0式中:εt是断裂伸长率或是屈服伸长率;L是试样断裂时或屈服时标线间的距离;L0是标线间的距离。  总结:电子拉力试验机今天也越来越经常地出现在塑料注塑和挤出业者的实验室中。一个原因是它们被越来越多地应用于前沿产品与工艺开发。另一个原因是它们对进料和成品的质量控制进行更为严格的监测。许多OEM厂家,特别是那些医疗装置或汽车领域的,需要塑料加工商在生产运转结束时自行进行测试。内部测试的另一个原因是改善工艺控制,这能降低废品率和实现真正的回报。

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