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　　常用(yong)的(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)方法有(you)金(jin)剛(gang)石車(che)削(xue)(xue)(xue)(xue)(xue)、金(jin)剛(gang)石鏜(tang)削(xue)(xue)(xue)(xue)(xue)、珩(heng)(heng)(heng)磨(mo)(mo)(mo)、研(yan)磨(mo)(mo)(mo)、超精(jing)(jing)(jing)(jing)(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)、砂帶磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)和(he)鏡面(mian)(mian)(mian)(mian)磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)等。金(jin)剛(gang)石車(che)削(xue)(xue)(xue)(xue)(xue)和(he)金(jin)剛(gang)石鏜(tang)削(xue)(xue)(xue)(xue)(xue)都(dou)是(shi)利(li)用(yong)聚晶金(jin)剛(gang)石刀具(ju)(ju)進(jin)(jin)行切削(xue)(xue)(xue)(xue)(xue)，珩(heng)(heng)(heng)磨(mo)(mo)(mo)是(shi)采用(yong)鑲嵌在珩(heng)(heng)(heng)磨(mo)(mo)(mo)頭(tou)上(shang)的(de)油(you)石(又稱珩(heng)(heng)(heng)磨(mo)(mo)(mo)條)主要對(dui)孔進(jin)(jin)行精(jing)(jing)(jing)(jing)(jing)整(zheng)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。研(yan)磨(mo)(mo)(mo)是(shi)利(li)用(yong)涂敷(fu)或壓(ya)(ya)嵌在研(yan)具(ju)(ju)上(shang)的(de)磨(mo)(mo)(mo)料顆粒(li)，通過研(yan)具(ju)(ju)與工(gong)(gong)(gong)(gong)(gong)件(jian)在一定壓(ya)(ya)力下的(de)相對(dui)運(yun)動對(dui)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)表(biao)面(mian)(mian)(mian)(mian)進(jin)(jin)行的(de)精(jing)(jing)(jing)(jing)(jing)整(zheng)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。超精(jing)(jing)(jing)(jing)(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)是(shi)采用(yong)裝在振動頭(tou)上(shang)的(de)細粒(li)度油(you)石對(dui)精(jing)(jing)(jing)(jing)(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)表(biao)面(mian)(mian)(mian)(mian)進(jin)(jin)行精(jing)(jing)(jing)(jing)(jing)整(zheng)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。砂帶磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)是(shi)采用(yong)高速運(yun)轉的(de)環形砂帶加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)的(de)磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)。鏡面(mian)(mian)(mian)(mian)磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)是(shi)達到最佳(jia)表(biao)面(mian)(mian)(mian)(mian)粗糙度的(de)磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)方法。磨(mo)(mo)(mo)削(xue)(xue)(xue)(xue)(xue)后(hou)的(de)工(gong)(gong)(gong)(gong)(gong)件(jian)，表(biao)面(mian)(mian)(mian)(mian)粗糙度不大(da)于(yu)0.01微(wei)米，光(guang)如鏡面(mian)(mian)(mian)(mian)，可(ke)以清晰成像。精(jing)(jing)(jing)(jing)(jing)密(mi)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)在制(zhi)造業中處于(yu)十分(fen)重(zhong)要的(de)地(di)位(wei)，常用(yong)于(yu)精(jing)(jing)(jing)(jing)(jing)密(mi)絲杠、精(jing)(jing)(jing)(jing)(jing)密(mi)齒(chi)輪、精(jing)(jing)(jing)(jing)(jing)密(mi)蝸輪、精(jing)(jing)(jing)(jing)(jing)密(mi)導軌(gui)和(he)精(jing)(jing)(jing)(jing)(jing)密(mi)軸(zhou)承等關鍵零(ling)件(jian)的(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。

　　熱強度高

　　使用(yong)溫(wen)度比鋁合(he)金(jin)(jin)高幾百(bai)度，在中等溫(wen)度下仍能保持所(suo)要求的(de)強度,可在450～500℃的(de)溫(wen)度下長期(qi)工(gong)作這(zhe)兩類(lei)鈦合(he)金(jin)(jin)在150℃～500℃范圍內仍有很高的(de)比強度，而鋁合(he)金(jin)(jin)在150℃時比強度明顯下降(jiang)。鈦合(he)金(jin)(jin)的(de)工(gong)作溫(wen)度可達500℃，鋁合(he)金(jin)(jin)則(ze)在200℃以下。

　　抗蝕性好

　　鈦(tai)(tai)合金在潮濕的大氣和(he)海水介(jie)質(zhi)(zhi)中工作(zuo)，其抗蝕性(xing)遠(yuan)優于不(bu)銹鋼;對點蝕、酸(suan)蝕、應力(li)腐(fu)蝕的抵抗力(li)特別(bie)強;對堿(jian)、氯化物、氯的有(you)機物品(pin)、硝酸(suan)、硫酸(suan)等有(you)優良的抗腐(fu)蝕能力(li)。但鈦(tai)(tai)對具(ju)有(you)還(huan)原(yuan)性(xing)氧(yang)及(ji)鉻鹽介(jie)質(zhi)(zhi)的抗蝕性(xing)差。

　　低溫性能好

　　鈦合(he)金在(zai)低(di)(di)溫(wen)(wen)(wen)和超低(di)(di)溫(wen)(wen)(wen)下(xia)，仍能(neng)保(bao)持(chi)其力學性(xing)(xing)能(neng)。低(di)(di)溫(wen)(wen)(wen)性(xing)(xing)能(neng)好，間(jian)隙元素極(ji)低(di)(di)的鈦合(he)金，如TA7，在(zai)-253℃下(xia)還(huan)能(neng)保(bao)持(chi)一定的塑性(xing)(xing)。因(yin)此，鈦合(he)金也是一種重要的低(di)(di)溫(wen)(wen)(wen)結構材(cai)料。