鈦合金鍛件缺陷(xian)的(de)(de)(de)(de)存在，有的(de)(de)(de)(de)會(hui)影響(xiang)后(hou)續工(gong)序處(chu)理(li)(li)質(zhi)量或加工(gong)質(zhi)量，有的(de)(de)(de)(de)則(ze)嚴重影響(xiang)鈦(tai)鍛(duan)件(jian)的(de)(de)(de)(de)性能(neng)及使用，甚至極大地降低所制成品件(jian)的(de)(de)(de)(de)使用壽命，危及安全。因此(ci)為了保證或提高鈦(tai)鍛(duan)件(jian)的(de)(de)(de)(de)質(zhi)量，除在工(gong)藝上加強質(zhi)量控制，采取相(xiang)應(ying)措(cuo)施杜(du)絕鈦(tai)鍛(duan)件(jian)缺陷(xian)的(de)(de)(de)(de)產生外，還(huan)應(ying)進行必(bi)要的(de)(de)(de)(de)質(zhi)量檢驗，防(fang)止(zhi)帶有對后(hou)續工(gong)序（如熱處(chu)理(li)(li)、表(biao)面處(chu)理(li)(li)、冷加工(gong)）及使用性能(neng)有惡劣影響(xiang)的(de)(de)(de)(de)缺陷(xian)的(de)(de)(de)(de)鈦(tai)鍛(duan)件(jian)流人(ren)后(hou)續工(gong)序。經質(zhi)量檢驗后(hou)，還(huan)可以(yi)根據(ju)缺陷(xian)的(de)(de)(de)(de)性質(zhi)及影響(xiang)使用的(de)(de)(de)(de)程度對已制鈦(tai)鍛(duan)件(jian)采取補救(jiu)措(cuo)施，使之符合技術(shu)標(biao)準(zhun)或使用的(de)(de)(de)(de)要求。

　　因此，鈦(tai)(tai)鍛(duan)(duan)件(jian)質(zhi)(zhi)量(liang)(liang)檢驗從某(mou)種意義上講，一方面(mian)是對已制鈦(tai)(tai)鍛(duan)(duan)件(jian)的質(zhi)(zhi)量(liang)(liang)把關，另一方面(mian)則(ze)是給鍛(duan)(duan)造工(gong)藝指(zhi)出(chu)改進方向，從而保(bao)證鈦(tai)(tai)鍛(duan)(duan)件(jian)質(zhi)(zhi)量(liang)(liang)符合鈦(tai)(tai)鍛(duan)(duan)件(jian)技術標(biao)準的要(yao)求(qiu)(qiu)，并滿足設(she)計、加工(gong)、使用上的要(yao)求(qiu)(qiu)。鈦(tai)(tai)鍛(duan)(duan)件(jian)質(zhi)(zhi)量(liang)(liang)的檢驗包括外觀質(zhi)(zhi)量(liang)(liang)及(ji)內部質(zhi)(zhi)量(liang)(liang)的檢驗。外觀質(zhi)(zhi)量(liang)(liang)檢驗主要(yao)指(zhi)鈦(tai)(tai)鍛(duan)(duan)件(jian)的幾何尺寸、形狀、表(biao)面(mian)狀況等項目(mu)的檢驗；內部質(zhi)(zhi)量(liang)(liang)的檢驗則(ze)主要(yao)是指(zhi)鈦(tai)(tai)鍛(duan)(duan)件(jian)化學成分(fen)、宏觀組織、鈦(tai)(tai)鍛(duan)(duan)件(jian)顯微組織及(ji)力(li)學性能等各項目(mu)的檢驗。

　　具體說(shuo)來，鈦(tai)(tai)鍛(duan)件(jian)的(de)(de)外(wai)觀(guan)質(zhi)量(liang)檢(jian)(jian)(jian)驗(yan)也(ye)就是(shi)檢(jian)(jian)(jian)查鈦(tai)(tai)鍛(duan)件(jian)的(de)(de)形狀(zhuang)、幾何尺寸是(shi)否(fou)符合(he)圖樣的(de)(de)規定(ding)，鈦(tai)(tai)鍛(duan)件(jian)的(de)(de)表面(mian)(mian)是(shi)否(fou)有缺(que)(que)陷，是(shi)什么(me)(me)性(xing)質(zhi)的(de)(de)缺(que)(que)陷，它們的(de)(de)形態(tai)特(te)征是(shi)什么(me)(me)。表面(mian)(mian)狀(zhuang)態(tai)的(de)(de)檢(jian)(jian)(jian)驗(yan)內(nei)容一般是(shi)檢(jian)(jian)(jian)查鈦(tai)(tai)鍛(duan)件(jian)表面(mian)(mian)是(shi)否(fou)有表面(mian)(mian)裂紋、折疊、折皺、壓(ya)坑、桔皮、起(qi)泡、斑疤(ba)、腐蝕坑、碰傷(shang)、外(wai)來物、未充(chong)滿、凹(ao)坑、缺(que)(que)肉(rou)、劃痕等(deng)缺(que)(que)陷。而(er)內(nei)部(bu)質(zhi)量(liang)的(de)(de)檢(jian)(jian)(jian)驗(yan)就是(shi)檢(jian)(jian)(jian)查鈦(tai)(tai)鍛(duan)件(jian)本身的(de)(de)內(nei)在質(zhi)量(liang)，是(shi)外(wai)觀(guan)質(zhi)量(liang)檢(jian)(jian)(jian)查無法(fa)發(fa)現(xian)的(de)(de)質(zhi)量(liang)狀(zhuang)況，它既(ji)包(bao)(bao)含(han)(han)檢(jian)(jian)(jian)查鈦(tai)(tai)鍛(duan)件(jian)的(de)(de)內(nei)部(bu)缺(que)(que)陷，也(ye)包(bao)(bao)含(han)(han)檢(jian)(jian)(jian)查鈦(tai)(tai)鍛(duan)件(jian)的(de)(de)力學性(xing)能，而(er)對重(zhong)要件(jian)、關(guan)鍵(jian)件(jian)或(huo)大型鈦(tai)(tai)鍛(duan)件(jian)還應進(jin)行化學成分分析。對于內(nei)部(bu)缺(que)(que)陷我們將通(tong)過低倍檢(jian)(jian)(jian)查、斷口檢(jian)(jian)(jian)查、高(gao)倍檢(jian)(jian)(jian)查的(de)(de)方(fang)法(fa)來檢(jian)(jian)(jian)驗(yan)鈦(tai)(tai)鍛(duan)件(jian)是(shi)否(fou)存(cun)在諸如內(nei)裂、縮孔(kong)、疏松、粗(cu)晶、白點、樹枝(zhi)狀(zhuang)結(jie)晶、流線不符合(he)外(wai)形、流線紊亂、穿流、粗(cu)晶環、氧化膜、分層、過熱、過燒組織等(deng)缺(que)(que)陷。而(er)對于力學性(xing)能主要是(shi)檢(jian)(jian)(jian)查常溫(wen)抗(kang)拉(la)強(qiang)(qiang)度(du)(du)、塑性(xing)、韌(ren)性(xing)、硬(ying)度(du)(du)、疲(pi)勞(lao)強(qiang)(qiang)度(du)(du)、高(gao)溫(wen)瞬時斷裂強(qiang)(qiang)度(du)(du)、高(gao)溫(wen)持久強(qiang)(qiang)度(du)(du)、持久塑性(xing)及高(gao)溫(wen)蠕變(bian)強(qiang)(qiang)度(du)(du)等(deng)。

　　由于鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)制成(cheng)(cheng)零件(jian)(jian)(jian)(jian)后，在使用過(guo)程(cheng)中其(qi)受力情況(kuang)、重要(yao)程(cheng)度、工作條件(jian)(jian)(jian)(jian)不(bu)(bu)(bu)同(tong)(tong)，其(qi)所用材(cai)料和(he)冶金工藝(yi)也不(bu)(bu)(bu)同(tong)(tong)，因此不(bu)(bu)(bu)同(tong)(tong)的(de)(de)部(bu)位依據上述情況(kuang)并(bing)按照本部(bu)門(men)的(de)(de)要(yao)求(qiu)將鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)分(fen)出類(lei)(lei)(lei)別，不(bu)(bu)(bu)同(tong)(tong)的(de)(de)部(bu)門(men)，不(bu)(bu)(bu)同(tong)(tong)的(de)(de)標(biao)準對(dui)鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)的(de)(de)分(fen)類(lei)(lei)(lei)也是不(bu)(bu)(bu)同(tong)(tong)的(de)(de)。但不(bu)(bu)(bu)管怎么，對(dui)于鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)質量(liang)(liang)檢(jian)(jian)驗(yan)的(de)(de)整體(ti)來說(shuo)都離不(bu)(bu)(bu)開兩大類(lei)(lei)(lei)檢(jian)(jian)驗(yan)，即外觀(guan)質量(liang)(liang)和(he)內(nei)部(bu)質量(liang)(liang)的(de)(de)檢(jian)(jian)驗(yan)，只(zhi)不(bu)(bu)(bu)過(guo)鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)的(de)(de)類(lei)(lei)(lei)別不(bu)(bu)(bu)同(tong)(tong)，其(qi)具體(ti)的(de)(de)檢(jian)(jian)驗(yan)項目、檢(jian)(jian)驗(yan)數(shu)量(liang)(liang)和(he)檢(jian)(jian)驗(yan)要(yao)求(qiu)不(bu)(bu)(bu)同(tong)(tong)罷(ba)了。例如，有的(de)(de)工業部(bu)門(men)將結構鋼(gang)、不(bu)(bu)(bu)銹(xiu)鋼(gang)、耐熱(re)鋼(gang)鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)分(fen)成(cheng)(cheng)Ⅳ類(lei)(lei)(lei)進行(xing)檢(jian)(jian)驗(yan)，有的(de)(de)部(bu)門(men)將鋁(lv)(lv)合金鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)與模鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)按其(qi)使用情況(kuang)分(fen)成(cheng)(cheng)Ⅲ類(lei)(lei)(lei)進行(xing)檢(jian)(jian)驗(yan)，還有的(de)(de)部(bu)門(men)將鋁(lv)(lv)合金、銅(tong)合金鈦(tai)(tai)鍛(duan)(duan)(duan)(duan)(duan)(duan)件(jian)(jian)(jian)(jian)分(fen)成(cheng)(cheng)Ⅳ類(lei)(lei)(lei)進行(xing)檢(jian)(jian)驗(yan)。