五金加工就是將原材料(不銹(xiu)鋼(gang)、銅料、鋁料、鐵料)，用(yong)車床、銑床、鉆床、磨(mo)床、拋(pao)光(guang)(guang)(guang)等(deng)(deng)機(ji)(ji)械按客戶的(de)圖紙或樣品加(jia)(jia)工(gong)(gong)成(cheng)為各種零件(jian)(jian)，如(ru)：螺絲 、馬達軸(zhou)、模(mo)型車零件(jian)(jian)、移動(dong)電源(yuan)外(wai)殼等(deng)(deng)。五金表(biao)面(mian)(mian)加(jia)(jia)工(gong)(gong)細分可分為：五金噴漆加(jia)(jia)工(gong)(gong)、電鍍、表(biao)面(mian)(mian)拋(pao)光(guang)(guang)(guang)加(jia)(jia)工(gong)(gong)、五金腐蝕加(jia)(jia)工(gong)(gong)等(deng)(deng)等(deng)(deng)。拋(pao)光(guang)(guang)(guang)：原理(li)是指通過有規則溶解達到光(guang)(guang)(guang)亮平(ping)滑(hua)；方法：利用(yong)機(ji)(ji)械、化學或電化學的(de)作用(yong)，使(shi)工(gong)(gong)件(jian)(jian)表(biao)面(mian)(mian)粗糙度(du)降低，得(de)以是五金加(jia)(jia)工(gong)(gong)獲得(de)光(guang)(guang)(guang)亮、平(ping)整表(biao)面(mian)(mian)的(de)加(jia)(jia)工(gong)(gong)方法。是利用(yong)拋(pao) 光(guang)(guang)(guang)工(gong)(gong)具(ju)和磨(mo)料顆粒(li)或其(qi)他拋(pao)光(guang)(guang)(guang)介質對工(gong)(gong)件(jian)(jian)表(biao)面(mian)(mian)進(jin)行的(de)修飾加(jia)(jia)工(gong)(gong)。

五金(jin)加工的(de)(de)氧(yang)化(hua)(hua)(hua)分為(wei)鋁硬質氧(yang)化(hua)(hua)(hua)、壓鑄鋁氧(yang)化(hua)(hua)(hua)、彩(cai)色氧(yang)化(hua)(hua)(hua)、鋁陽極氧(yang)化(hua)(hua)(hua)、本色氧(yang)化(hua)(hua)(hua)等(deng)。鈍(dun)化(hua)(hua)(hua)：原理可以用薄膜(mo)理論來解釋(shi)，鈍(dun)化(hua)(hua)(hua)是由于(yu)金(jin)屬(shu)與氧(yang)化(hua)(hua)(hua)性(xing)物(wu)質作用，作用時在金(jin)屬(shu)表面生成 一種(zhong)非常(chang)薄的(de)(de)、致密的(de)(de)、覆(fu)蓋性(xing)能良好的(de)(de)、牢固(gu)地吸附在金(jin)屬(shu) 表面上(shang)的(de)(de)鈍(dun)化(hua)(hua)(hua)膜(mo)。與傳統的(de)(de)物(wu)理封閉法相比，鈍(dun)化(hua)(hua)(hua)處理后具(ju)有絕-對不(bu)增加工件(jian)厚度和改(gai)變(bian)顏色的(de)(de)特(te)點、提(ti)高了產品的(de)(de)精密度和附加值，使操作更(geng)方便。

背膠：背膠是郵票的(de)(de)重要特征之(zhi)一。機加(jia)(jia)(jia)工(gong)(gong)(gong)：車削(xue)(xue)加(jia)(jia)(jia)工(gong)(gong)(gong)、刨削(xue)(xue)加(jia)(jia)(jia)工(gong)(gong)(gong)、銑削(xue)(xue)加(jia)(jia)(jia)工(gong)(gong)(gong)、磨(mo)削(xue)(xue)加(jia)(jia)(jia)工(gong)(gong)(gong)，滾牙：牙使用(yong)兩個帶有(you)螺紋(wen)的(de)(de)棍子來擠壓(ya)被加(jia)(jia)(jia)工(gong)(gong)(gong)的(de)(de)工(gong)(gong)(gong)件(jian)，使零件(jian)表面被壓(ya)出(chu)螺紋(wen)。攻牙：攻牙就是板牙，是用(yong)來加(jia)(jia)(jia)工(gong)(gong)(gong)或(huo)修理(li)外螺紋(wen)的(de)(de)，它的(de)(de)內(nei)部是有(you)螺紋(wen)的(de)(de)，可手工(gong)(gong)(gong)加(jia)(jia)(jia)工(gong)(gong)(gong)也(ye)可以(yi)用(yong)在套絲機上(shang)。電(dian)鍍(du)(du)：電(dian)鍍(du)(du)分為掛鍍(du)(du)、滾鍍(du)(du)、連續(xu)鍍(du)(du)和(he)刷鍍(du)(du)等方式(shi)，主要與待鍍(du)(du)件(jian)的(de)(de)尺寸和(he)批量有(you)關。

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