一、功(gong)率(lv)的(de)(de)(de)選擇(ze) 超(chao)聲波清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)效(xiao)(xiao)果(guo)不一定與(功(gong)率(lv)×清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)時(shi)(shi)(shi)(shi)(shi)間(jian))成正比,有(you)(you)時(shi)(shi)(shi)(shi)(shi)用(yong)(yong)小功(gong)率(lv),花費很(hen)長時(shi)(shi)(shi)(shi)(shi)間(jian)也沒有(you)(you)清(qing)(qing)(qing)(qing)除污垢。而如果(guo)功(gong)率(lv)達到(dao)一定數值,有(you)(you)時(shi)(shi)(shi)(shi)(shi)很(hen)快便(bian)將污垢去除。若(ruo)選擇(ze)功(gong)率(lv)太大(da),空(kong)(kong)化強度將大(da)大(da)增加(jia),清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)效(xiao)(xiao)果(guo)是提(ti)高了,但這時(shi)(shi)(shi)(shi)(shi)使(shi)(shi)較精密的(de)(de)(de)零件(jian)也產(chan)生蝕點(dian),得不償失,而且清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)缸底部振(zhen)(zhen)動(dong)板處(chu)空(kong)(kong)化嚴重,水(shui)(shui)(shui)點(dian)腐蝕也增大(da),在(zai)采用(yong)(yong)三(san)氯乙(yi)烯等有(you)(you)機溶劑時(shi)(shi)(shi)(shi)(shi),基本上(shang)(shang)沒有(you)(you)問(wen)題,但采用(yong)(yong)水(shui)(shui)(shui)或水(shui)(shui)(shui)溶性清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)液時(shi)(shi)(shi)(shi)(shi),易于受到(dao)水(shui)(shui)(shui)點(dian)腐蝕,如果(guo)振(zhen)(zhen)動(dong)板表(biao)面已受到(dao)傷痕(hen),強功(gong)率(lv)下水(shui)(shui)(shui)底產(chan)生空(kong)(kong)化腐蝕更嚴重,因此要按實際使(shi)(shi)用(yong)(yong)情況選擇(ze)超(chao)聲功(gong)率(lv)。 二、頻率(lv)的(de)(de)(de)選擇(ze) 超(chao)聲清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)頻率(lv)從(cong)28kHz到(dao)120kHz之間(jian),在(zai)使(shi)(shi)用(yong)(yong)水(shui)(shui)(shui)或水(shui)(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)劑時(shi)(shi)(shi)(shi)(shi)由空(kong)(kong)穴作用(yong)(yong)引(yin)起的(de)(de)(de)物理清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)力顯然對低頻有(you)(you)利,一般(ban)使(shi)(shi)用(yong)(yong)28-40kHz左右。對小間(jian)隙、狹縫(feng)、深孔(kong)的(de)(de)(de)零件(jian)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi),用(yong)(yong)高頻(一般(ban)40kHz以上(shang)(shang))較好,甚至幾百kHz。對鐘表(biao)零件(jian)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)時(shi)(shi)(shi)(shi)(shi),用(yong)(yong)400kHz。若(ruo)用(yong)(yong)寬帶調頻清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi),效(xiao)(xiao)果(guo)更良好。 三(san)、清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)籃(lan)(lan)的(de)(de)(de)使(shi)(shi)用(yong)(yong) 在(zai)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)小零件(jian)物品時(shi)(shi)(shi)(shi)(shi),常(chang)使(shi)(shi)用(yong)(yong)網(wang)籃(lan)(lan),由于網(wang)眼(yan)要引(yin)起超(chao)聲衰減,要特(te)別引(yin)起注意(yi)。當頻率(lv)為(wei)28khz時(shi)(shi)(shi)(shi)(shi)使(shi)(shi)用(yong)(yong)10mm以上(shang)(shang)的(de)(de)(de)網(wang)眼(yan)為(wei)好。 四、清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)液溫度的(de)(de)(de)選擇(ze) 水(shui)(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)液最適(shi)宜(yi)的(de)(de)(de)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)溫度為(wei)40-60℃,尤其在(zai)天冷(leng)時(shi)(shi)(shi)(shi)(shi)若(ruo)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)液溫度低空(kong)(kong)化效(xiao)(xiao)應差,清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)效(xiao)(xiao)果(guo)也差。因此有(you)(you)部分清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)機在(zai)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)缸外邊(bian)繞上(shang)(shang)加(jia)熱電熱絲進行(xing)溫度控制,當溫度升高后(hou)空(kong)(kong)化易發生,所以清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)(xi)...
發布時間:
2020
-
06
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18
瀏覽(lan)次數:139