304、316系列奧氏體不(bu)銹鋼常用于制造與人們生活密切相關的不(bu)銹鋼(gang)餐廚具,如制造大型廚房設備、家電、刀具、餐具、洗碗機、豆漿機、微波爐、熱水器、烤爐、水槽、冰箱、水杯等產品。
304不銹鋼在廚房行業廣泛應用,其優異的成型性能使水槽的多樣化設計成為可能。與早期的陶瓷水槽相比,不銹鋼雙槽、一體排水槽等都極為便利,而且比塑料復合材料更耐熱和耐損傷,能夠經受住最有腐蝕性食物的腐蝕和多年的粗糙清洗,因而得到廣泛使用。它也補充了操作臺面的顏色或設計,因此不銹鋼現已成為商業和家庭炊具的主要材料。尤其是304型號的不銹鋼大量地替換了諸如瓷磚、鋁和塑料復合板等材料,因為它們抗熱、不易損壞,并能保持清潔,如圖B.1所示。
304不(bu)銹(xiu)(xiu)鋼在食(shi)(shi)品(pin)(pin)行業使(shi)用(yong)(yong)(yong),雖然通常(chang)食(shi)(shi)品(pin)(pin)成(cheng)品(pin)(pin)酸(suan)堿(jian)度(du)適中,但在整個(ge)生(sheng)產過程中,可能(neng)存在強(qiang)(qiang)酸(suan)強(qiang)(qiang)堿(jian)環境。部分(fen)食(shi)(shi)品(pin)(pin)成(cheng)品(pin)(pin)中,含(han)較(jiao)多(duo)的(de)(de)(de)食(shi)(shi)鹽(yan)(yan)成(cheng)分(fen),或在加(jia)工(gong)過程中要(yao)接觸到(dao)食(shi)(shi)鹽(yan)(yan)溶液。為了(le)除去(qu)果(guo)蔬(shu)(shu)上(shang)的(de)(de)(de)殘留農藥,可能(neng)要(yao)用(yong)(yong)(yong)稀鹽(yan)(yan)酸(suan)浸泡(pao)。果(guo)蔬(shu)(shu)化(hua)學去(qu)皮法用(yong)(yong)(yong)氫(qing)氧(yang)化(hua)鈉或氫(qing)氧(yang)化(hua)鉀,且要(yao)用(yong)(yong)(yong)鹽(yan)(yan)酸(suan)中和(he)。柑桔去(qu)囊農時(shi),用(yong)(yong)(yong)到(dao)燒堿(jian)、鹽(yan)(yan)酸(suan)、硫(liu)酸(suan)等(deng)溶液;鹽(yan)(yan)酸(suan)濃度(du)達(da)10%,溫(wen)度(du)達(da)80℃。硫(liu)酸(suan)濃度(du)用(yong)(yong)(yong)到(dao)15%,溫(wen)度(du)達(da)80℃。水果(guo)凍前(qian)加(jia)二(er)氧(yang)化(hua)硫(liu)等(deng)添(tian)(tian)加(jia)劑(ji)(ji),以延緩氧(yang)化(hua)作用(yong)(yong)(yong)。果(guo)蔬(shu)(shu)抽空排(pai)氣(qi)時(shi)放入(ru)食(shi)(shi)鹽(yan)(yan)溶液。青(qing)豆用(yong)(yong)(yong)鹽(yan)(yan)水進行浮選。罐(guan)頭食(shi)(shi)品(pin)(pin)中用(yong)(yong)(yong)食(shi)(shi)鹽(yan)(yan)作添(tian)(tian)加(jia)劑(ji)(ji)。醬(jiang)及(ji)(ji)醬(jiang)油食(shi)(shi)品(pin)(pin)中含(han)有大量(liang)食(shi)(shi)鹽(yan)(yan)成(cheng)分(fen)。腌制食(shi)(shi)品(pin)(pin)時(shi)腌制劑(ji)(ji)有食(shi)(shi)鹽(yan)(yan)、硝(xiao)酸(suan)鈉、亞硝(xiao)酸(suan)鈉、磷酸(suan)鹽(yan)(yan)等(deng)。因此,根(gen)據不(bu)同(tong)品(pin)(pin)種及(ji)(ji)不(bu)同(tong)生(sheng)產工(gong)藝,選用(yong)(yong)(yong)合適的(de)(de)(de)不(bu)銹(xiu)(xiu)鋼材料(liao)及(ji)(ji)加(jia)工(gong)方法是(shi)非(fei)常(chang)必要(yao)的(de)(de)(de),稍(shao)有疏忽,機械設備在使(shi)用(yong)(yong)(yong)過程中就有銹(xiu)(xiu)蝕的(de)(de)(de)危險。不(bu)銹(xiu)(xiu)鋼在食(shi)(shi)品(pin)(pin)加(jia)工(gong)與餐廚具應用(yong)(yong)(yong)與對應設備選擇如表(biao)B.1所示。