一、功(gong)率(lv)(lv)的(de)選擇(ze) 超(chao)聲波清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)效(xiao)果不一定與(功(gong)率(lv)(lv)×清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)時(shi)(shi)(shi)(shi)間(jian))成正比(bi),有時(shi)(shi)(shi)(shi)用(yong)(yong)小(xiao)功(gong)率(lv)(lv),花費很長時(shi)(shi)(shi)(shi)間(jian)也(ye)沒有清(qing)(qing)(qing)(qing)除污(wu)垢。而如果功(gong)率(lv)(lv)達(da)到(dao)(dao)一定數值,有時(shi)(shi)(shi)(shi)很快便將污(wu)垢去(qu)除。若選擇(ze)功(gong)率(lv)(lv)太大,空(kong)化強度(du)將大大增加,清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)效(xiao)果是提高了,但這時(shi)(shi)(shi)(shi)使(shi)(shi)(shi)較精密的(de)零件(jian)也(ye)產(chan)生(sheng)蝕點,得不償失,而且清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)缸(gang)底(di)(di)部振動(dong)板處空(kong)化嚴重,水(shui)(shui)點腐(fu)(fu)蝕也(ye)增大,在(zai)采用(yong)(yong)三氯(lv)乙烯等有機(ji)溶劑時(shi)(shi)(shi)(shi),基本上沒有問(wen)題,但采用(yong)(yong)水(shui)(shui)或(huo)水(shui)(shui)溶性清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)液(ye)(ye)時(shi)(shi)(shi)(shi),易于受到(dao)(dao)水(shui)(shui)點腐(fu)(fu)蝕,如果振動(dong)板表(biao)面已受到(dao)(dao)傷痕,強功(gong)率(lv)(lv)下水(shui)(shui)底(di)(di)產(chan)生(sheng)空(kong)化腐(fu)(fu)蝕更嚴重,因(yin)此要(yao)(yao)按(an)實際使(shi)(shi)(shi)用(yong)(yong)情(qing)況選擇(ze)超(chao)聲功(gong)率(lv)(lv)。 二、頻(pin)率(lv)(lv)的(de)選擇(ze) 超(chao)聲清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)頻(pin)率(lv)(lv)從28kHz到(dao)(dao)120kHz之間(jian),在(zai)使(shi)(shi)(shi)用(yong)(yong)水(shui)(shui)或(huo)水(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)劑時(shi)(shi)(shi)(shi)由空(kong)穴作用(yong)(yong)引起(qi)的(de)物理清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)力顯然對(dui)低頻(pin)有利,一般(ban)使(shi)(shi)(shi)用(yong)(yong)28-40kHz左(zuo)右(you)。對(dui)小(xiao)間(jian)隙、狹縫、深孔的(de)零件(jian)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi),用(yong)(yong)高頻(pin)(一般(ban)40kHz以(yi)上)較好,甚至幾(ji)百kHz。對(dui)鐘表(biao)零件(jian)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)時(shi)(shi)(shi)(shi),用(yong)(yong)400kHz。若用(yong)(yong)寬帶調頻(pin)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi),效(xiao)果更良好。 三、清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)籃的(de)使(shi)(shi)(shi)用(yong)(yong) 在(zai)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)小(xiao)零件(jian)物品時(shi)(shi)(shi)(shi),常使(shi)(shi)(shi)用(yong)(yong)網籃,由于網眼要(yao)(yao)引起(qi)超(chao)聲衰減,要(yao)(yao)特別引起(qi)注意。當頻(pin)率(lv)(lv)為28khz時(shi)(shi)(shi)(shi)使(shi)(shi)(shi)用(yong)(yong)10mm以(yi)上的(de)網眼為好。 四、清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)液(ye)(ye)溫度(du)的(de)選擇(ze) 水(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)液(ye)(ye)最適宜(yi)的(de)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)溫度(du)為40-60℃,尤其在(zai)天冷時(shi)(shi)(shi)(shi)若清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)液(ye)(ye)溫度(du)低空(kong)化效(xiao)應差(cha),清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)效(xiao)果也(ye)差(cha)。因(yin)此有部分清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)機(ji)在(zai)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)缸(gang)外邊繞(rao)上加熱電熱絲進行(xing)溫度(du)控制,當溫度(du)升高后(hou)空(kong)化易發生(sheng),所以(yi)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)...
發(fa)布時(shi)間:
2020
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06
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18
瀏覽次數:139