注塑機鑄(zhu)鋁電加熱器

注(zhu)塑(su)機鑄鋁電(dian)加熱器(qi)概述：

注塑機鑄鋁電(dian)(dian)加(jia)(jia)熱器是以(yi)管(guan)狀電(dian)(dian)熱元(yuan)件為發熱體，并彎曲成(cheng)型，用(yong)(yong)優(you)良(liang)鑄材料為外(wai)殼(ke)，外(wai)殼(ke)以(yi)離心式澆鑄成(cheng)各種(zhong)形狀的電(dian)(dian)加(jia)(jia)熱器，有圓型、平板、直角型、風冷、水冷及其它異型等。經精加(jia)(jia)工(gong)后它能和被加(jia)(jia)熱體緊密貼(tie)合。其使用(yong)(yong)溫度一般在攝氏150～450度之間，可廣(guang)泛(fan)應(ying)用(yong)(yong)于塑料機械、模頭、電(dian)(dian)纜機械、化工(gong)、橡膠(jiao)、石(shi)油等設備上(shang)。

注塑(su)機鑄鋁電(dian)加(jia)熱(re)器注意(yi)事項：

1.金(jin)屬鑄造加熱器應放在干(gan)燥(zao)處、若因(yin)長(chang)期放置(zhi)，絕緣(yuan)電阻低于1MΩ時(shi)(shi)，可在攝氏200度左右的烘箱中烘烤(kao)5-6小時(shi)(shi)，即可恢復(fu)正常。或降低電壓(ya)通電加熱，直至(zhi)恢復(fu)絕緣(yuan)電阻。

2.金(jin)屬鑄造加熱器應(ying)(ying)做(zuo)好(hao)定(ding)位(wei)固定(ding),有(you)效發熱區須與受熱體緊密(mi)貼(tie)合，嚴禁空燒。發現表面有(you)灰(hui)塵或污染物時，應(ying)(ying)及時處理干(gan)凈(jing)再用，以(yi)免影晌散熱而縮短使用壽命。

3.工作電壓(ya)不(bu)得超過(guo)額定(ding)值的(de)10%；空氣(qi)相對濕度不(bu)大于95%，無爆炸性和(he)腐蝕性氣(qi)體。

4.接(jie)線部分放在加熱層(ceng)(ceng)、保溫層(ceng)(ceng)以外，外殼應有效接(jie)地；避(bi)免(mian)與腐蝕性、爆炸性介質、水(shui)份(fen)接(jie)觸;引接(jie)線應能長期承受接(jie)線部分的溫度及加熱負載(zai)，接(jie)線螺絲(si)緊固(gu)時應避(bi)免(mian)用力過猛。

5.電熱(re)管出線端(duan)的氧化鎂粉，在使用場所避免受到污染物與(yu)水分(fen)滲入，防止漏(lou)電事故的發生。

注(zhu)塑機鑄鋁(lv)電加(jia)熱器用途(tu)及(ji)特點 ： 

主要用(yong)于塑料擠出(chu)機(ji)的(de)料筒(tong)加熱(re)裝置上(shang)，具有結構合理(li)，外形美觀，性能穩(wen)定，加熱(re)快、散熱(re)均勻，絕(jue)緣性能良好(hao)，耐高壓(ya)特(te)點。尤其(qi)適用(yong)于高溫度高功率的(de)要求上(shang)。廣泛運用(yong)于注(zhu)塑機(ji)和擠出(chu)機(ji)、包裝印刷、石油化工、電子設備等行(xing)業。

注塑(su)機鑄鋁電(dian)加熱器的溫(wen)度控制

一般(ban)以測(ce)溫(wen)熱(re)電(dian)(dian)(dian)(dian)偶為測(ce)溫(wen)元件(jian)，配以測(ce)溫(wen)毫伏計成為控(kong)溫(wen)裝置(zhi)，指揮料(liao)(liao)(liao)筒(tong)(tong)和模具鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)(dian)流的(de)(de)通斷(duan)，有選擇地固(gu)定(ding)料(liao)(liao)(liao)筒(tong)(tong)各段(duan)(duan)溫(wen)度和模具溫(wen)度。 料(liao)(liao)(liao)筒(tong)(tong)鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)一般(ban)分為二(er)段(duan)(duan)、三段(duan)(duan)或(huo)(huo)四段(duan)(duan)控(kong)制。電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)柜上的(de)(de)電(dian)(dian)(dian)(dian)流表分別顯示各段(duan)(duan)鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)(dian)流的(de)(de)大小。電(dian)(dian)(dian)(dian)流表的(de)(de)讀數是比(bi)較固(gu)定(ding)的(de)(de)，如果在(zai)運行中(zhong)發現電(dian)(dian)(dian)(dian)流表讀數比(bi)較長(chang)時間(jian)的(de)(de)偏低，則可(ke)能鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)發生了故(gu)障，或(huo)(huo)導線接(jie)觸不良(liang)，或(huo)(huo)電(dian)(dian)(dian)(dian)熱(re)絲氧化變細，或(huo)(huo)某(mou)個鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)燒毀，這(zhe)些都將使電(dian)(dian)(dian)(dian)路并(bing)聯的(de)(de)電(dian)(dian)(dian)(dian)阻(zu)阻(zu)值增大而使電(dian)(dian)(dian)(dian)流下(xia)降(jiang)。 在(zai)電(dian)(dian)(dian)(dian)流表有讀數時也可(ke)以簡單(dan)地用塑料(liao)(liao)(liao)條逐個在(zai)鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)外壁上抹劃，看料(liao)(liao)(liao)條熔融(rong)與否來判斷(duan)某(mou)個鑄(zhu)(zhu)(zhu)鋁(lv)電(dian)(dian)(dian)(dian)加(jia)熱(re)器(qi)(qi)(qi)(qi)是否通電(dian)(dian)(dian)(dian)或(huo)(huo)燒毀。

注塑機鑄鋁電加熱器技術參數(shu) ：

1、鑄鋁電加熱器表面負荷可達到2.5-4.5w/cm2，高工(gong)作溫度300-450℃之間；

2、金(jin)(jin)屬(shu)鑄造加熱(re)器是一(yi)種有效(xiao)熱(re)分(fen)部均勻的加熱(re)器，熱(re)導性(xing)(xing)較佳的金(jin)(jin)屬(shu)合(he)金(jin)(jin)，確保(bao)熱(re)面(mian)溫度均勻，消除了設(she)備的熱(re)點(dian)(dian)(dian)及(ji)冷(leng)點(dian)(dian)(dian)。具有長壽命、保(bao)溫性(xing)(xing)能(neng)好、機械性(xing)(xing)能(neng)強、耐腐蝕、抗(kang)磁(ci)場等優點(dian)(dian)(dian)。將(jiang)外散熱(re)面(mian)增加保(bao)溫裝置，內散熱(re)面(mian)燒結(jie)紅外線(xian)這樣可節約用電35%。

3、工作(zuo)溫(wen)度(du)(du)下的泄(xie)漏電(dian)(dian)流和電(dian)(dian)氣強度(du)(du)。 a)泄(xie)漏電(dian)(dian)流(0.5mA b)電(dian)(dian)氣強度(du)(du)：1250V1min無(wu)閃絡擊穿現象(xiang) 

4、耐(nai)潮(chao)濕(shi)。 在(zai)20∽30℃溫度，空(kong)氣相對濕(shi)度為91%∽95%的(de)潮(chao)濕(shi)箱內放置48h，無(wu)任何損傷。

5、引(yin)出管抗(kang)拉(la)(la)性。 承(cheng)受該零(ling)件(jian)抗(kang)拉(la)(la)力的70%，歷時3min無位(wei)移和斷裂現象。

6、功率的偏離(li)率(±5%。5、承受高(gao)壓1500v