一、功率(lv)(lv)(lv)的(de)(de)選(xuan)擇 超聲(sheng)波清(qing)洗(xi)(xi)(xi)效(xiao)果(guo)不(bu)一定與(功率(lv)(lv)(lv)×清(qing)洗(xi)(xi)(xi)時(shi)(shi)(shi)(shi)間)成正(zheng)比(bi),有(you)時(shi)(shi)(shi)(shi)用小功率(lv)(lv)(lv),花費(fei)很長時(shi)(shi)(shi)(shi)間也(ye)沒有(you)清(qing)除污垢(gou)。而(er)如果(guo)功率(lv)(lv)(lv)達到(dao)一定數值,有(you)時(shi)(shi)(shi)(shi)很快便將污垢(gou)去除。若(ruo)(ruo)選(xuan)擇功率(lv)(lv)(lv)太大(da)(da)(da),空化強度(du)將大(da)(da)(da)大(da)(da)(da)增(zeng)加,清(qing)洗(xi)(xi)(xi)效(xiao)果(guo)是提高(gao)了,但這時(shi)(shi)(shi)(shi)使(shi)(shi)較(jiao)精密的(de)(de)零件也(ye)產(chan)生蝕(shi)點(dian),得不(bu)償失(shi),而(er)且清(qing)洗(xi)(xi)(xi)缸底部振動(dong)板處空化嚴重,水(shui)(shui)點(dian)腐(fu)(fu)蝕(shi)也(ye)增(zeng)大(da)(da)(da),在(zai)(zai)采用三氯乙(yi)烯等有(you)機溶(rong)劑時(shi)(shi)(shi)(shi),基(ji)本上沒有(you)問題,但采用水(shui)(shui)或水(shui)(shui)溶(rong)性清(qing)洗(xi)(xi)(xi)液(ye)(ye)時(shi)(shi)(shi)(shi),易(yi)于(yu)受(shou)到(dao)水(shui)(shui)點(dian)腐(fu)(fu)蝕(shi),如果(guo)振動(dong)板表面已受(shou)到(dao)傷痕(hen),強功率(lv)(lv)(lv)下水(shui)(shui)底產(chan)生空化腐(fu)(fu)蝕(shi)更(geng)嚴重,因(yin)此(ci)要(yao)(yao)按實(shi)際使(shi)(shi)用情況選(xuan)擇超聲(sheng)功率(lv)(lv)(lv)。 二、頻(pin)(pin)率(lv)(lv)(lv)的(de)(de)選(xuan)擇 超聲(sheng)清(qing)洗(xi)(xi)(xi)頻(pin)(pin)率(lv)(lv)(lv)從28kHz到(dao)120kHz之間,在(zai)(zai)使(shi)(shi)用水(shui)(shui)或水(shui)(shui)清(qing)洗(xi)(xi)(xi)劑時(shi)(shi)(shi)(shi)由(you)空穴作用引(yin)起的(de)(de)物(wu)理清(qing)洗(xi)(xi)(xi)力(li)顯(xian)然對低(di)頻(pin)(pin)有(you)利,一般使(shi)(shi)用28-40kHz左(zuo)右。對小間隙、狹縫、深孔的(de)(de)零件清(qing)洗(xi)(xi)(xi),用高(gao)頻(pin)(pin)(一般40kHz以上)較(jiao)好,甚至幾(ji)百kHz。對鐘(zhong)表零件清(qing)洗(xi)(xi)(xi)時(shi)(shi)(shi)(shi),用400kHz。若(ruo)(ruo)用寬帶調頻(pin)(pin)清(qing)洗(xi)(xi)(xi),效(xiao)果(guo)更(geng)良好。 三、清(qing)洗(xi)(xi)(xi)籃的(de)(de)使(shi)(shi)用 在(zai)(zai)清(qing)洗(xi)(xi)(xi)小零件物(wu)品時(shi)(shi)(shi)(shi),常使(shi)(shi)用網籃,由(you)于(yu)網眼要(yao)(yao)引(yin)起超聲(sheng)衰減(jian),要(yao)(yao)特別引(yin)起注意。當頻(pin)(pin)率(lv)(lv)(lv)為28khz時(shi)(shi)(shi)(shi)使(shi)(shi)用10mm以上的(de)(de)網眼為好。 四(si)、清(qing)洗(xi)(xi)(xi)液(ye)(ye)溫(wen)度(du)的(de)(de)選(xuan)擇 水(shui)(shui)清(qing)洗(xi)(xi)(xi)液(ye)(ye)最適宜的(de)(de)清(qing)洗(xi)(xi)(xi)溫(wen)度(du)為40-60℃,尤其在(zai)(zai)天冷時(shi)(shi)(shi)(shi)若(ruo)(ruo)清(qing)洗(xi)(xi)(xi)液(ye)(ye)溫(wen)度(du)低(di)空化效(xiao)應差,清(qing)洗(xi)(xi)(xi)效(xiao)果(guo)也(ye)差。因(yin)此(ci)有(you)部分清(qing)洗(xi)(xi)(xi)機在(zai)(zai)清(qing)洗(xi)(xi)(xi)缸外邊(bian)繞上加熱(re)電熱(re)絲進行溫(wen)度(du)控制,當溫(wen)度(du)升高(gao)后空化易(yi)發生,所以清(qing)洗(xi)(xi)(xi)...
發布時間:
2020
-
06
-
18
瀏覽次數:168