一、功(gong)(gong)率(lv)的選擇 超(chao)聲波清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)效果(guo)不(bu)一定與(yu)(功(gong)(gong)率(lv)×清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)時(shi)間(jian))成正比,有時(shi)用(yong)(yong)小(xiao)功(gong)(gong)率(lv),花(hua)費很長(chang)時(shi)間(jian)也(ye)沒(mei)有清(qing)(qing)除(chu)污垢。而如果(guo)功(gong)(gong)率(lv)達(da)到一定數值,有時(shi)很快(kuai)便將污垢去除(chu)。若選擇功(gong)(gong)率(lv)太大(da),空化(hua)強(qiang)度(du)(du)將大(da)大(da)增加(jia),清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)效果(guo)是提高(gao)了(le),但這時(shi)使(shi)較精密的零件也(ye)產生(sheng)蝕點(dian),得不(bu)償失,而且(qie)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)缸底部振動板處空化(hua)嚴重,水(shui)(shui)點(dian)腐蝕也(ye)增大(da),在(zai)(zai)(zai)采(cai)用(yong)(yong)三氯(lv)乙(yi)烯等有機溶劑時(shi),基(ji)本上(shang)(shang)沒(mei)有問題,但采(cai)用(yong)(yong)水(shui)(shui)或水(shui)(shui)溶性清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)液(ye)(ye)時(shi),易于受到水(shui)(shui)點(dian)腐蝕,如果(guo)振動板表面已受到傷痕,強(qiang)功(gong)(gong)率(lv)下水(shui)(shui)底產生(sheng)空化(hua)腐蝕更(geng)嚴重,因(yin)此(ci)要(yao)按實際(ji)使(shi)用(yong)(yong)情況(kuang)選擇超(chao)聲功(gong)(gong)率(lv)。 二、頻(pin)(pin)(pin)率(lv)的選擇 超(chao)聲清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)頻(pin)(pin)(pin)率(lv)從28kHz到120kHz之間(jian),在(zai)(zai)(zai)使(shi)用(yong)(yong)水(shui)(shui)或水(shui)(shui)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)劑時(shi)由空穴(xue)作用(yong)(yong)引起的物理清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)力顯(xian)然(ran)對(dui)低(di)頻(pin)(pin)(pin)有利,一般使(shi)用(yong)(yong)28-40kHz左右。對(dui)小(xiao)間(jian)隙(xi)、狹縫、深(shen)孔(kong)的零件清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi),用(yong)(yong)高(gao)頻(pin)(pin)(pin)(一般40kHz以上(shang)(shang))較好,甚(shen)至幾百kHz。對(dui)鐘(zhong)表零件清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)時(shi),用(yong)(yong)400kHz。若用(yong)(yong)寬帶調(diao)頻(pin)(pin)(pin)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi),效果(guo)更(geng)良好。 三、清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)籃(lan)的使(shi)用(yong)(yong) 在(zai)(zai)(zai)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)小(xiao)零件物品時(shi),常使(shi)用(yong)(yong)網籃(lan),由于網眼要(yao)引起超(chao)聲衰減,要(yao)特別引起注意。當頻(pin)(pin)(pin)率(lv)為(wei)28khz時(shi)使(shi)用(yong)(yong)10mm以上(shang)(shang)的網眼為(wei)好。 四、清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)液(ye)(ye)溫(wen)(wen)度(du)(du)的選擇 水(shui)(shui)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)液(ye)(ye)最(zui)適宜的清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)溫(wen)(wen)度(du)(du)為(wei)40-60℃,尤(you)其在(zai)(zai)(zai)天冷(leng)時(shi)若清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)液(ye)(ye)溫(wen)(wen)度(du)(du)低(di)空化(hua)效應差(cha),清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)效果(guo)也(ye)差(cha)。因(yin)此(ci)有部分清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)機在(zai)(zai)(zai)清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)缸外邊繞上(shang)(shang)加(jia)熱電(dian)熱絲(si)進行溫(wen)(wen)度(du)(du)控制,當溫(wen)(wen)度(du)(du)升高(gao)后空化(hua)易發生(sheng),所以清(qing)(qing)洗(xi)(xi)(xi)(xi)(xi)(xi)...
發(fa)布時間:
2020
-
06
-
18
瀏覽次數:139