而噴(pen)(pen)(pen)砂和(he)(he)(he)(he)拋丸(wan)(wan)(wan)(wan)可(ke)以用(yong)來對工(gong)(gong)件(jian)(jian)(jian)進行(xing)去(qu)(qu)污，主(zhu)要(yao)(yao)是(shi)(shi)為(wei)(wei)下(xia)(xia)一(yi)道工(gong)(gong)序(xu)做準備，比(bi)如噴(pen)(pen)(pen)漆和(he)(he)(he)(he)烤(kao)漆，也是(shi)(shi)為(wei)(wei)了保持(chi)零件(jian)(jian)(jian)的(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)一(yi)致性。需(xu)(xu)要(yao)(yao)理(li)(li)解(jie)的(de)(de)(de)(de)是(shi)(shi)，拋丸(wan)(wan)(wan)(wan)可(ke)以強(qiang)化(hua)工(gong)(gong)件(jian)(jian)(jian)，但噴(pen)(pen)(pen)砂就沒(mei)那么明(ming)顯了。通常(chang)拋丸(wan)(wan)(wan)(wan)材(cai)料是(shi)(shi)小(xiao)鋼球，噴(pen)(pen)(pen)砂材(cai)料是(shi)(shi)石英砂。根據號碼。噴(pen)(pen)(pen)砂和(he)(he)(he)(he)噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)應保證下(xia)(xia)一(yi)道工(gong)(gong)序(xu)的(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)粗(cu)(cu)糙(cao)度要(yao)(yao)求。復(fu)雜(za)形狀一(yi)般采用(yong)噴(pen)(pen)(pen)砂，不(bu)(bu)易手工(gong)(gong)除(chu)銹，效率低，現(xian)場環境差，規則形狀采用(yong)拋丸(wan)(wan)(wan)(wan)，污染小(xiao)。有幾點需(xu)(xu)要(yao)(yao)了解(jie)：1.噴(pen)(pen)(pen)砂和(he)(he)(he)(he)噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)都是(shi)(shi)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)處(chu)理(li)(li)，但并不(bu)(bu)意味(wei)著只(zhi)噴(pen)(pen)(pen)鑄(zhu)件(jian)(jian)(jian)，其他部位也可(ke)以噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)。2.噴(pen)(pen)(pen)砂的(de)(de)(de)(de)主(zhu)要(yao)(yao)目(mu)的(de)(de)(de)(de)是(shi)(shi)去(qu)(qu)除(chu)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)的(de)(de)(de)(de)鐵銹和(he)(he)(he)(he)氧化(hua)皮等。拋丸(wan)(wan)(wan)(wan)的(de)(de)(de)(de)作(zuo)用(yong)相(xiang)對更多。噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)不(bu)(bu)僅可(ke)以去(qu)(qu)除(chu)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)的(de)(de)(de)(de)鐵銹和(he)(he)(he)(he)氧化(hua)皮，還可(ke)以提(ti)(ti)高表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)粗(cu)(cu)糙(cao)度，去(qu)(qu)除(chu)毛刺和(he)(he)(he)(he)消除(chu)內應力，減少零件(jian)(jian)(jian)熱處(chu)理(li)(li)后的(de)(de)(de)(de)變形，提(ti)(ti)高零件(jian)(jian)(jian)的(de)(de)(de)(de)耐(nai)磨(mo)性和(he)(he)(he)(he)抗壓能力。4.目(mu)前(qian)噴(pen)(pen)(pen)砂主(zhu)要(yao)(yao)是(shi)(shi)手工(gong)(gong)操作(zuo)，而拋丸(wan)(wan)(wan)(wan)更多的(de)(de)(de)(de)是(shi)(shi)自動(dong)(dong)和(he)(he)(he)(he)半自動(dong)(dong)。拋丸(wan)(wan)(wan)(wan)的(de)(de)(de)(de)現(xian)代定(ding)義：拋丸(wan)(wan)(wan)(wan)是(shi)(shi)一(yi)種機械表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)處(chu)理(li)(li)工(gong)(gong)藝(yi)的(de)(de)(de)(de)名稱，類似的(de)(de)(de)(de)工(gong)(gong)藝(yi)有噴(pen)(pen)(pen)砂和(he)(he)(he)(he)拋丸(wan)(wan)(wan)(wan)。噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)是(shi)(shi)一(yi)種冷(leng)處(chu)理(li)(li)工(gong)(gong)藝(yi)，分為(wei)(wei)噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)清(qing)理(li)(li)和(he)(he)(he)(he)噴(pen)(pen)(pen)丸(wan)(wan)(wan)(wan)強(qiang)化(hua)。拋丸(wan)(wan)(wan)(wan)清(qing)理(li)(li)顧名思義就是(shi)(shi)清(qing)除(chu)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)的(de)(de)(de)(de)氧化(hua)皮等雜(za)質(zhi)，提(ti)(ti)高外(wai)觀質(zhi)量(liang)。拋丸(wan)(wan)(wan)(wan)強(qiang)化(hua)是(shi)(shi)用(yong)高速運動(dong)(dong)的(de)(de)(de)(de)彈丸(wan)(wan)(wan)(wan)(60-110米/秒)持(chi)續沖擊強(qiang)化(hua)工(gong)(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)，在循環變形過程中迫使目(mu)標表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)和(he)(he)(he)(he)表(biao)(biao)(biao)層(0.10-0.85毫米)發生以下(xia)(xia)變化(hua)：

1.微結構被修改;

2.非均(jun)勻塑性變形的外(wai)表層引入殘余(yu)壓應力，內表層產生(sheng)殘余(yu)拉應力;

3.外表面粗(cu)糙度發生變化(Ra Rz)。影響(xiang)：可提高材料/零件的(de)(de)抗疲勞斷裂(lie)能力，防止疲勞失效、塑性變形和脆性斷裂(lie)，提高疲勞壽命(ming)。噴砂的(de)(de)定(ding)義：噴丸是一種廣泛應(ying)用于工廠的(de)(de)表面強化技術。它的(de)(de)設備簡(jian)單，成本低(di)，不(bu)受(shou)工件形狀和位置的(de)(de)限制