一(yi)、功(gong)率(lv)的選(xuan)擇 超(chao)聲(sheng)波清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)效果(guo)不一(yi)定與(功(gong)率(lv)×清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)時間)成正比,有(you)時用(yong)(yong)小(xiao)(xiao)功(gong)率(lv),花費很長時間也沒有(you)清(qing)(qing)(qing)(qing)(qing)(qing)除污(wu)垢。而如果(guo)功(gong)率(lv)達到(dao)一(yi)定數值,有(you)時很快便(bian)將污(wu)垢去(qu)除。若選(xuan)擇功(gong)率(lv)太大,空化強(qiang)度(du)(du)(du)將大大增加(jia),清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)效果(guo)是提(ti)高(gao)(gao)了,但這時使(shi)較(jiao)精密的零件(jian)也產生蝕(shi)點(dian),得不償失,而且清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)缸(gang)底部振動(dong)板處空化嚴(yan)重,水(shui)(shui)(shui)點(dian)腐蝕(shi)也增大,在(zai)采用(yong)(yong)三氯乙烯等有(you)機(ji)溶(rong)劑(ji)時,基本上(shang)沒有(you)問題,但采用(yong)(yong)水(shui)(shui)(shui)或(huo)水(shui)(shui)(shui)溶(rong)性(xing)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液時,易(yi)于(yu)受到(dao)水(shui)(shui)(shui)點(dian)腐蝕(shi),如果(guo)振動(dong)板表(biao)(biao)面已(yi)受到(dao)傷痕,強(qiang)功(gong)率(lv)下水(shui)(shui)(shui)底產生空化腐蝕(shi)更嚴(yan)重,因此要按實(shi)際使(shi)用(yong)(yong)情況選(xuan)擇超(chao)聲(sheng)功(gong)率(lv)。 二、頻(pin)率(lv)的選(xuan)擇 超(chao)聲(sheng)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)頻(pin)率(lv)從28kHz到(dao)120kHz之間,在(zai)使(shi)用(yong)(yong)水(shui)(shui)(shui)或(huo)水(shui)(shui)(shui)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)劑(ji)時由(you)空穴作用(yong)(yong)引起(qi)的物理清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)力顯然對低頻(pin)有(you)利(li),一(yi)般(ban)使(shi)用(yong)(yong)28-40kHz左右。對小(xiao)(xiao)間隙、狹(xia)縫、深孔的零件(jian)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi),用(yong)(yong)高(gao)(gao)頻(pin)(一(yi)般(ban)40kHz以上(shang))較(jiao)好,甚至幾百kHz。對鐘(zhong)表(biao)(biao)零件(jian)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)時,用(yong)(yong)400kHz。若用(yong)(yong)寬帶調頻(pin)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi),效果(guo)更良(liang)好。 三、清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)籃的使(shi)用(yong)(yong) 在(zai)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)小(xiao)(xiao)零件(jian)物品時,常使(shi)用(yong)(yong)網籃,由(you)于(yu)網眼(yan)要引起(qi)超(chao)聲(sheng)衰減(jian),要特別(bie)引起(qi)注意。當頻(pin)率(lv)為28khz時使(shi)用(yong)(yong)10mm以上(shang)的網眼(yan)為好。 四、清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液溫(wen)(wen)度(du)(du)(du)的選(xuan)擇 水(shui)(shui)(shui)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液最適宜的清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)溫(wen)(wen)度(du)(du)(du)為40-60℃,尤(you)其在(zai)天冷時若清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液溫(wen)(wen)度(du)(du)(du)低空化效應差(cha),清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)效果(guo)也差(cha)。因此有(you)部分清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)機(ji)在(zai)清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)缸(gang)外邊繞上(shang)加(jia)熱電熱絲進行溫(wen)(wen)度(du)(du)(du)控制,當溫(wen)(wen)度(du)(du)(du)升高(gao)(gao)后空化易(yi)發(fa)生,所以清(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)...
發布時(shi)間:
2020
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06
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18
瀏(liu)覽次數:168