無塵車間對溫濕度的控制決取于其生產工藝。在滿意加工工藝的條件下,還應該考慮到人的舒適感。因為人出汗以后,對產品將有污染,特別是怕鈉的半導體車間,這種車間不宜超越25度。濕度過高產生的問題更多。相對濕度超越55%時,冷卻水管壁上會結露,假如發生在精密裝置或電路中,就會引起各種事故。相對濕度在50%時易生銹。下面,就隨著背光模組無塵車間廠家(jia)一起來看(kan)看(kan)常見無塵車間對溫濕度有要求(qiu)的(de)工藝吧!
示例一:
在(zai)精密機械加(jia)(jia)工(gong)和計量等場合,為(wei)(wei)了防止因熱膨脹(zhang)而引起的(de)(de)(de)差錯(cuo),有必要使(shi)工(gong)件(jian)(jian)保持必定(ding)(ding)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)。工(gong)件(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)(de)答(da)應(ying)波動(dong)起伏應(ying)根據加(jia)(jia)工(gong)精度(du)(du)(du)決議(yi)。例如,在(zai)恒(heng)溫(wen)(wen)(wen)(wen)(wen)室(shi)里對一(yi)根長500mm的(de)(de)(de)標準尺(chi)刻線(xian),工(gong)藝答(da)應(ying)線(xian)間(jian)公役為(wei)(wei)2um,其中lum為(wei)(wei)尺(chi)溫(wen)(wen)(wen)(wen)(wen)改變(bian)所(suo)引起的(de)(de)(de)形變(bian)差錯(cuo),另1um為(wei)(wei)加(jia)(jia)工(gong)與量測差錯(cuo)。1um折合尺(chi)溫(wen)(wen)(wen)(wen)(wen)改變(bian)量=0.20C[a為(wei)(wei)尺(chi)線(xian)膨脹(zhang)系(xi)數(shu),取10/um/(m?K);l為(wei)(wei)尺(chi)長,m],故(gu)工(gong)件(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)改變(bian)需在(zai):以(yi)內。但由于工(gong)件(jian)(jian)測量儀器(qi)等都有必定(ding)(ding)的(de)(de)(de)熱惰性,空氣溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)(de)波動(dong)傳人工(gong)件(jian)(jian)后,就要衰減。在(zai)設計恒(heng)溫(wen)(wen)(wen)(wen)(wen)體(ti)(ti)系(xi)時(shi)(shi),一(yi)般總(zong)是以(yi)恒(heng)定(ding)(ding)環境空氣溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)為(wei)(wei)根據,故(gu)相應(ying)的(de)(de)(de)環境溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)精度(du)(du)(du)可比工(gong)件(jian)(jian)答(da)應(ying)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)精度(du)(du)(du)低一(yi)些。因此(ci),在(zai)確(que)定(ding)(ding)恒(heng)溫(wen)(wen)(wen)(wen)(wen)室(shi)參數(shu)和選擇自動(dong)控(kong)制(zhi)時(shi)(shi),有必要考慮工(gong)件(jian)(jian)恒(heng)溫(wen)(wen)(wen)(wen)(wen)恒(heng)濕車間(jian)、圍護結構、空氣處理設備(bei)和自控(kong)體(ti)(ti)系(xi)之間(jian)的(de)(de)(de)動(dong)態特性。
示例二:
在電(dian)(dian)(dian)子(zi)(zi)(zi)行業制(zhi)作車間(jian)是樶重(zhong)要產生靜(jing)電(dian)(dian)(dian)的(de)當地,通常靜(jing)電(dian)(dian)(dian)會對產品形(xing)成短(duan)路(lu)甚至(zhi)會形(xing)成職工導電(dian)(dian)(dian)暈(yun)倒(dao)事故,所以電(dian)(dian)(dian)子(zi)(zi)(zi)行業的(de)無(wu)塵(chen)(chen)車間(jian)相對濕(shi)度不(bu)該低于30%,這樣(yang)即(ji)可以削(xue)減靜(jing)電(dian)(dian)(dian)的(de)產生,通常建議無(wu)塵(chen)(chen)車間(jian)的(de)防(fang)靜(jing)電(dian)(dian)(dian)區(qu)域相對濕(shi)度不(bu)低于50%。過于干燥的(de)空氣中易(yi)粉塵(chen)(chen)飛揚,電(dian)(dian)(dian)子(zi)(zi)(zi)廠無(wu)塵(chen)(chen)車間(jian)無(wu)特殊要求的(de)情(qing)況下,溫(wen)度控制(zhi)在22℃左右,相對濕(shi)度控制(zhi)在55~60%RH之間(jian),在這種環(huan)境下,人們感(gan)覺(jue)舒適(shi),靜(jing)電(dian)(dian)(dian)也消(xiao)失了。
標簽:背光模組無塵車間