金(jin)屬材料所(suo)具有的那種能夠適(shi)應實際生(sheng)產工藝(yi)要求的能力統稱工藝(yi)性(xing)(xing)能。例如,鑄(zhu)造(zao)性(xing)(xing)、鍛造(zao)性(xing)(xing)、深沖性(xing)(xing)、彎曲性(xing)(xing)、切削(xue)性(xing)(xing)、焊接(jie)性(xing)(xing)、淬透性(xing)(xing)等。
材料(liao)的工(gong)藝性能(neng)是(shi)一種參量,用于表征材料(liao)適應工(gong)藝而獲得規定性能(neng)和外(wai)形的能(neng)力。
為了滿足上(shang)述的性能要求(qiu),必(bi)須要控制材料的成分,組織和結(jie)構(或廣(guang)義的結(jie)構)。
金屬(shu)材料(liao)的(de)(de)加工(gong)工(gong)藝性(xing)能(neng),可以通過相應的(de)(de)材料(liao)試驗加以評定。
加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)(yi)的(de)(de)(de)(de)目(mu)(mu)的(de)(de)(de)(de)是控制(zhi)(zhi)金(jin)屬材(cai)(cai)料外部(bu)形狀和內(nei)部(bu)結構。例如,將不(bu)銹(xiu)鋼(gang)板材(cai)(cai)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)成(cheng)(cheng)(cheng)不(bu)銹(xiu)鋼(gang)焊(han)接(jie)鋼(gang)管,就需要(yao)一系(xi)列諸如剪(jian)切、成(cheng)(cheng)(cheng)形、焊(han)接(jie)、熱處理(li)、酸洗和檢驗等一系(xi)列控制(zhi)(zhi)其外部(bu)形狀和內(nei)部(bu)結構的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)藝(yi)(yi)過程,才能(neng)(neng)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)成(cheng)(cheng)(cheng)不(bu)銹(xiu)鋼(gang)焊(han)接(jie)鋼(gang)管。不(bu)銹(xiu)鋼(gang)所以能(neng)(neng)廣(guang)泛的(de)(de)(de)(de)得到應用(yong),就是由它的(de)(de)(de)(de)可(ke)(ke)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)性能(neng)(neng)作支撐的(de)(de)(de)(de)。了解掌握不(bu)銹(xiu)鋼(gang)的(de)(de)(de)(de)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)性能(neng)(neng),對(dui)加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)(yi)制(zhi)(zhi)定,對(dui)不(bu)銹(xiu)鋼(gang)的(de)(de)(de)(de)正確、合理(li)選用(yong)是有幫(bang)助(zhu)的(de)(de)(de)(de),也是必(bi)不(bu)可(ke)(ke)少的(de)(de)(de)(de)。工(gong)(gong)(gong)(gong)藝(yi)(yi)是利用(yong)生(sheng)產(chan)工(gong)(gong)(gong)(gong)具(ju)對(dui)各(ge)種原材(cai)(cai)料、半成(cheng)(cheng)(cheng)品(pin)進行加(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)或處理(li),使(shi)之成(cheng)(cheng)(cheng)為(wei)(wei)產(chan)成(cheng)(cheng)(cheng)品(pin)的(de)(de)(de)(de)方法。材(cai)(cai)料工(gong)(gong)(gong)(gong)藝(yi)(yi)的(de)(de)(de)(de)目(mu)(mu)的(de)(de)(de)(de)在(zai)于最經濟地(di)滿足(zu)產(chan)品(pin)的(de)(de)(de)(de)要(yao)求,這(zhe)些要(yao)求包括材(cai)(cai)料內(nei)部(bu)的(de)(de)(de)(de)成(cheng)(cheng)(cheng)分(fen)、結構和組(zu)織(可(ke)(ke)以并稱為(wei)(wei)結構)以及(ji)外部(bu)形狀(尺寸及(ji)表面質量)。依(yi)據這(zhe)個(ge)目(mu)(mu)的(de)(de)(de)(de),做如下幾點說明。
一、加工(gong)工(gong)藝
1. 產品(pin)
產品(pin)一般可分(fen)為(wei)(wei)原材(cai)料(liao)(liao)(liao)和器件兩大類。材(cai)料(liao)(liao)(liao)生產廠(chang)的(de)產品(pin)為(wei)(wei)原材(cai)料(liao)(liao)(liao),而材(cai)料(liao)(liao)(liao)加(jia)工廠(chang)的(de)產品(pin)為(wei)(wei)器皿和構件等。以(yi)金(jin)屬材(cai)料(liao)(liao)(liao)為(wei)(wei)例,冶金(jin)廠(chang)生產的(de)產品(pin)是(shi)各(ge)種(zhong)(zhong)金(jin)屬材(cai)料(liao)(liao)(liao)的(de)棒(bang)、絲(si)、板、管等;而機械廠(chang)則由冶金(jin)廠(chang)的(de)產品(pin)為(wei)(wei)原材(cai)料(liao)(liao)(liao)加(jia)工成各(ge)種(zhong)(zhong)器件。
2. 要(yao)求
生產和(he)加(jia)(jia)工(gong)(gong)廠都要遵循(xun)一定的工(gong)(gong)業(ye)(ye)標(biao)(biao)準進行生產和(he)加(jia)(jia)工(gong)(gong)。工(gong)(gong)業(ye)(ye)標(biao)(biao)準的內容反(fan)映(ying)了制定標(biao)(biao)準時(shi)的工(gong)(gong)業(ye)(ye)水平以(yi)及制定人的認識水平。
工業(ye)產品的標準(zhun)必須寬(kuan)嚴(yan)適度,不(bu)(bu)必要的“過嚴(yan)”標準(zhun),將會造成不(bu)(bu)必要地判為(wei)不(bu)(bu)合格,引(yin)起浪(lang)費。而不(bu)(bu)適度地“從寬(kuan)”,將造成用(yong)戶無法使(shi)用(yong)。
“從嚴”和“從寬”對(dui)用戶都(dou)是不利的,選用材料時一(yi)方(fang)面要從理論和實驗兩(liang)方(fang)面去“吃(chi)透(tou)”工業標準中(zhong)的規(gui)定,理解后(hou)執(zhi)(zhi)行,這樣可以提高執(zhi)(zhi)行時的自覺性;另一(yi)方(fang)面,要加強國際交流,注意國際動向(xiang),不要過于滯后(hou)修訂標準。在這些(xie)基礎上,繼續(xu)慎(shen)重地發展工業標準。
3. 經濟
材(cai)料(liao)使(shi)(shi)用者希望(wang)能(neng)得到(dao)“物(wu)美(mei)價(jia)(jia)廉”材(cai)料(liao);材(cai)料(liao)生產者希望(wang)自己的材(cai)料(liao)能(neng)“優(you)質優(you)價(jia)(jia)”,這分別是使(shi)(shi)用者和供應商(shang)們(men)各自傾向(xiang)性的愿望(wang)。如果(guo)真能(neng)實現上述的愿望(wang),這無疑(yi)對(dui)雙(shuang)方(fang)都(dou)有(you)經濟效(xiao)益(yi)(yi),也就是人們(men)常說的雙(shuang)贏關系,而且對(dui)整個社會(hui)也有(you)效(xiao)益(yi)(yi)。
材料(liao)的(de)生(sheng)產和加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)工(gong)(gong)(gong)(gong)藝(yi)是極(ji)為繁(fan)多的(de),都有它(ta)(ta)們(men)的(de)科學原(yuan)理(li)(li)和技術訣竅,它(ta)(ta)們(men)的(de)合理(li)(li)性(xing)和先進性(xing)代表著一個(ge)國家(jia)的(de)科技水(shui)平(ping)。此外,材料(liao)的(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi),例如,熱加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)、冷加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)、切(qie)削、焊接等(deng),還涉及材料(liao)的(de)工(gong)(gong)(gong)(gong)藝(yi)性(xing)能(neng),它(ta)(ta)是影響材料(liao)能(neng)否大量“應用”的(de)一個(ge)重(zhong)要(yao)因素,也是材料(liao)“發展”中的(de)一個(ge)重(zhong)要(yao)領域(yu)。
二、工藝(yi)性能
工藝(yi)(yi)性(xing)(xing)(xing)(xing)能(neng)(neng)如(ru)前所述,是指(zhi)金(jin)屬(shu)材(cai)料(liao)適應加工工藝(yi)(yi)要求的(de)能(neng)(neng)力(li)。按照(zhao)金(jin)屬(shu)工藝(yi)(yi)方(fang)法的(de)不同,有鑄造性(xing)(xing)(xing)(xing)能(neng)(neng)、鍛造性(xing)(xing)(xing)(xing)能(neng)(neng)、焊接性(xing)(xing)(xing)(xing)能(neng)(neng)(可焊性(xing)(xing)(xing)(xing))、切削性(xing)(xing)(xing)(xing)能(neng)(neng)和成(cheng)形性(xing)(xing)(xing)(xing)能(neng)(neng)等。工藝(yi)(yi)性(xing)(xing)(xing)(xing)能(neng)(neng)往(wang)往(wang)是由材(cai)料(liao)的(de)物理性(xing)(xing)(xing)(xing)能(neng)(neng)、化學性(xing)(xing)(xing)(xing)能(neng)(neng)、力(li)學性(xing)(xing)(xing)(xing)能(neng)(neng)等綜合決定(ding)的(de)。例(li)如(ru),馬氏體不銹(xiu)鋼(gang)力(li)學性(xing)(xing)(xing)(xing)能(neng)(neng)的(de)強度高(gao),但(dan)其焊接性(xing)(xing)(xing)(xing)能(neng)(neng)卻很(hen)差。

