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一(yi)、功(gong)率的(de)(de)選擇(ze)(ze) 超(chao)聲波清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)效(xiao)(xiao)果不(bu)一(yi)定與(功(gong)率×清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)時(shi)間)成正(zheng)比,有時(shi)用(yong)(yong)小(xiao)功(gong)率,花費很長時(shi)間也沒有清(qing)(qing)(qing)(qing)(qing)(qing)(qing)除污垢(gou)。而如(ru)果功(gong)率達到(dao)一(yi)定數值,有時(shi)很快便將污垢(gou)去除。若(ruo)選擇(ze)(ze)功(gong)率太(tai)大,空(kong)化強(qiang)度(du)(du)將大大增加,清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)效(xiao)(xiao)果是提高了(le),但這時(shi)使(shi)(shi)較精密(mi)的(de)(de)零(ling)(ling)件(jian)也產生(sheng)蝕點(dian),得不(bu)償失,而且(qie)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)缸底部(bu)振動板(ban)處空(kong)化嚴重(zhong),水(shui)(shui)點(dian)腐(fu)蝕也增大,在(zai)采用(yong)(yong)三氯乙烯等有機溶劑時(shi),基本上(shang)沒有問題,但采用(yong)(yong)水(shui)(shui)或(huo)水(shui)(shui)溶性清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)液時(shi),易(yi)(yi)于受(shou)到(dao)水(shui)(shui)點(dian)腐(fu)蝕,如(ru)果振動板(ban)表(biao)面已受(shou)到(dao)傷(shang)痕(hen),強(qiang)功(gong)率下水(shui)(shui)底產生(sheng)空(kong)化腐(fu)蝕更(geng)嚴重(zhong),因(yin)(yin)此要(yao)按實際使(shi)(shi)用(yong)(yong)情況選擇(ze)(ze)超(chao)聲功(gong)率。 二、頻率的(de)(de)選擇(ze)(ze) 超(chao)聲清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)頻率從(cong)28kHz到(dao)120kHz之間,在(zai)使(shi)(shi)用(yong)(yong)水(shui)(shui)或(huo)水(shui)(shui)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)劑時(shi)由空(kong)穴作用(yong)(yong)引(yin)起(qi)(qi)的(de)(de)物理清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)力顯然對低頻有利,一(yi)般(ban)使(shi)(shi)用(yong)(yong)28-40kHz左(zuo)右。對小(xiao)間隙(xi)、狹縫(feng)、深孔的(de)(de)零(ling)(ling)件(jian)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi),用(yong)(yong)高頻(一(yi)般(ban)40kHz以(yi)上(shang))較好,甚至幾(ji)百kHz。對鐘表(biao)零(ling)(ling)件(jian)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)時(shi),用(yong)(yong)400kHz。若(ruo)用(yong)(yong)寬帶調頻清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi),效(xiao)(xiao)果更(geng)良好。 三、清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)籃(lan)的(de)(de)使(shi)(shi)用(yong)(yong) 在(zai)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)小(xiao)零(ling)(ling)件(jian)物品時(shi),常(chang)使(shi)(shi)用(yong)(yong)網籃(lan),由于網眼(yan)要(yao)引(yin)起(qi)(qi)超(chao)聲衰減,要(yao)特別引(yin)起(qi)(qi)注意。當(dang)頻率為(wei)28khz時(shi)使(shi)(shi)用(yong)(yong)10mm以(yi)上(shang)的(de)(de)網眼(yan)為(wei)好。 四、清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)液溫(wen)(wen)(wen)度(du)(du)的(de)(de)選擇(ze)(ze) 水(shui)(shui)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)液最適宜的(de)(de)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)溫(wen)(wen)(wen)度(du)(du)為(wei)40-60℃,尤其在(zai)天冷時(shi)若(ruo)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)液溫(wen)(wen)(wen)度(du)(du)低空(kong)化效(xiao)(xiao)應(ying)差,清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)效(xiao)(xiao)果也差。因(yin)(yin)此有部(bu)分清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)機在(zai)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)缸外邊(bian)繞上(shang)加熱(re)電熱(re)絲(si)進(jin)行(xing)溫(wen)(wen)(wen)度(du)(du)控(kong)制(zhi),當(dang)溫(wen)(wen)(wen)度(du)(du)升(sheng)高后空(kong)化易(yi)(yi)發生(sheng),所以(yi)清(qing)(qing)(qing)(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)(xi)...
發布時(shi)間:
2020
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06
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18
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