氧化鋯陶瓷的優點眾多,在工業上和生活上的應用非常多,就是加工起來比較的麻煩,加工的難度大。一般來講,對于氧化鋯陶瓷材料,由于其特殊的物理機械性能,最初只能采用磨削方法(fa)進(jin)行加(jia)(jia)工(gong),隨著機械加(jia)(jia)工(gong)技術(shu)的(de)發展,目前已可采用類似金屬加(jia)(jia)工(gong)的(de)多種工(gong)藝來加(jia)(jia)工(gong)陶瓷材(cai)料。下面讓大家深入了解氧化鋯(gao)陶瓷實用的(de)加(jia)(jia)工(gong)方法(fa)有(you)哪些:
實(shi)用的(de)加工方(fang)法
1、切削加工是金屬加工最常用的方法,陶瓷加工也有類似這種的加工方式:
氧(yang)化鋯陶瓷(ci)(ci)材料的切削加(jia)工(gong)不僅適用(yong)于(yu)半(ban)燒(shao)結(jie)(jie)體(ti)(ti)陶瓷(ci)(ci),也適用(yong)于(yu)完全(quan)燒(shao)結(jie)(jie)體(ti)(ti)陶瓷(ci)(ci)。半(ban)燒(shao)結(jie)(jie)體(ti)(ti)陶瓷(ci)(ci)的切削加(jia)工(gong)是(shi)為(wei)了盡可(ke)能減少完全(quan)燒(shao)結(jie)(jie)體(ti)(ti)陶瓷(ci)(ci)的加(jia)工(gong)余量,從而提高(gao)加(jia)工(gong)效率,降低(di)加(jia)工(gong)成本;
2、研磨、拋光加工主要是用在氧化鋯陶瓷的表面加工:
研磨、拋光加工是采用游離磨料對被(bei)加(jia)(jia)(jia)工(gong)(gong)(gong)表面材(cai)(cai)料(liao)產(chan)生微細去除作用(yong)以達到加(jia)(jia)(jia)工(gong)(gong)(gong)效果的(de)(de)(de)一種超(chao)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)方法。在(zai)陶(tao)(tao)(tao)瓷材(cai)(cai)料(liao)的(de)(de)(de)超(chao)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)與光整(zheng)加(jia)(jia)(jia)工(gong)(gong)(gong)中(zhong)(zhong),特別是在(zai)用(yong)于陶(tao)(tao)(tao)瓷軸承(cheng)的(de)(de)(de)陶(tao)(tao)(tao)瓷球的(de)(de)(de)精(jing)密(mi)加(jia)(jia)(jia)工(gong)(gong)(gong)中(zhong)(zhong),研磨(mo)、拋光加(jia)(jia)(jia)工(gong)(gong)(gong)有著(zhu)不可替代的(de)(de)(de)位(wei)置。鈞杰陶(tao)(tao)(tao)瓷可以對氧化鋯陶(tao)(tao)(tao)瓷材(cai)(cai)料(liao)進行鏡(jing)面的(de)(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong),并且已經有很多產(chan)品(pin)已經交(jiao)付給(gei)客戶了;
3、ELID磨削加工:
ELID磨削技術是一種磨削新工藝,其基本原理是利用在線的電解作用對金屬基砂輪進行修(xiu)整,即在(zai)磨(mo)削(xue)過(guo)(guo)程(cheng)中(zhong)在(zai)砂(sha)輪和工(gong)(gong)具(ju)電(dian)(dian)極(ji)之間(jian)澆(jiao)注電(dian)(dian)解磨(mo)削(xue)液并(bing)(bing)加以直(zhi)流(liu)脈沖(chong)電(dian)(dian)流(liu),使(shi)作為陽(yang)極(ji)的(de)(de)砂(sha)輪金屬(shu)結合劑產生(sheng)陽(yang)極(ji)溶解效應而被逐漸去(qu)除,使(shi)不受電(dian)(dian)解影響的(de)(de)磨(mo)料(liao)顆(ke)粒凸出砂(sha)輪表面,從而實現對砂(sha)輪的(de)(de)修(xiu)整,并(bing)(bing)在(zai)加工(gong)(gong)過(guo)(guo)程(cheng)中(zhong)始(shi)終保持砂(sha)輪的(de)(de)鋒銳性。這種(zhong)加工(gong)(gong)工(gong)(gong)藝還是比(bi)較先進的(de)(de),現在(zai)應用(yong)的(de)(de)并(bing)(bing)不是很多(duo)。但是在(zai)氧化鋯陶瓷材料(liao)的(de)(de)加工(gong)(gong)過(guo)(guo)程(cheng)中(zhong)優勢還是比(bi)較明(ming)顯的(de)(de);
4、塑性法加(jia)工:
傳統的(de)材(cai)料去(qu)(qu)除(chu)(chu)過(guo)程一(yi)般可分為(wei)脆(cui)(cui)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu)和(he)(he)塑(su)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu)兩種。在脆(cui)(cui)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu)過(guo)程中,材(cai)料去(qu)(qu)除(chu)(chu)是(shi)通過(guo)裂紋的(de)擴展和(he)(he)交(jiao)叉來完(wan)成(cheng)的(de);而塑(su)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu)則是(shi)以剪(jian)切(qie)(qie)加(jia)工切(qie)(qie)屑(xie)的(de)形式來產生材(cai)料的(de)塑(su)性(xing)(xing)(xing)(xing)流(liu)。對于金屬的(de)加(jia)工,塑(su)性(xing)(xing)(xing)(xing)切(qie)(qie)削機理很容易實現,而對于脆(cui)(cui)性(xing)(xing)(xing)(xing)材(cai)料如工程陶(tao)瓷(ci)和(he)(he)光(guang)學玻璃等,采用(yong)傳統的(de)加(jia)工技(ji)術(shu)及工藝(yi)參數只會導(dao)致(zhi)脆(cui)(cui)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu)而沒有顯著的(de)塑(su)性(xing)(xing)(xing)(xing)流(liu),在超過(guo)強(qiang)度極限(xian)的(de)切(qie)(qie)削力作用(yong)下,材(cai)料的(de)大小粒子發生脆(cui)(cui)性(xing)(xing)(xing)(xing)斷裂,這無疑(yi)將影響被加(jia)工表面的(de)質量和(he)(he)完(wan)整性(xing)(xing)(xing)(xing)。由加(jia)工實踐(jian)可知,在加(jia)工陶(tao)瓷(ci)等脆(cui)(cui)性(xing)(xing)(xing)(xing)材(cai)料時(shi),可采用(yong)極小的(de)切(qie)(qie)深來實現塑(su)性(xing)(xing)(xing)(xing)去(qu)(qu)除(chu)(chu),即材(cai)料去(qu)(qu)除(chu)(chu)機理可在微(wei)小去(qu)(qu)除(chu)(chu)條件下從脆(cui)(cui)性(xing)(xing)(xing)(xing)破壞向(xiang)塑(su)性(xing)(xing)(xing)(xing)變形轉變;
5、超聲加工:
超(chao)聲(sheng)加(jia)(jia)工是在加(jia)(jia)工工具或(huo)(huo)被加(jia)(jia)工材料(liao)上施加(jia)(jia)超(chao)聲(sheng)波(bo)振動(dong),在工具與工件之間加(jia)(jia)入液體磨料(liao)或(huo)(huo)糊(hu)狀磨料(liao),并以較小的壓(ya)力使工具貼壓(ya)在工件上。
常見問題
氧(yang)化鈷(gu)陶瓷加工(gong)的主要問題
一(yi)、氧化鋯陶瓷加(jia)工雖(sui)然有許多(duo)方(fang)法,但加(jia)工成本高,加(jia)工效率低,加(jia)工精(jing)度差(cha);其主(zhu)(zhu)要原(yuan)因(yin)之(zhi)一(yi)是陶瓷的(de)硬度非常高;對于氧化鋯陶瓷未燒(shao)(shao)(shao)體或焙燒(shao)(shao)(shao)體主(zhu)(zhu)要用(yong)(yong)切削加(jia)工進行粗加(jia)工,燒(shao)(shao)(shao)結(jie)后用(yong)(yong)磨削進行精(jing)加(jia)工;
二、根據氧化(hua)鋯(gao)陶(tao)瓷情況不(bu)(bu)同,也可(ke)以(yi)不(bu)(bu)經加(jia)(jia)工(gong)(gong),直(zhi)接磨(mo)削加(jia)(jia)工(gong)(gong)燒結(jie)體使(shi)之達到設(she)計精度(du);就(jiu)加(jia)(jia)工(gong)(gong)過程(cheng)而言,氧化(hua)鋯(gao)陶(tao)瓷與金屬零(ling)件幾乎(hu)是(shi)相似的,但氧化(hua)鋯(gao)陶(tao)瓷的加(jia)(jia)工(gong)(gong)余(yu)量(liang)則大(da)得多。未(wei)燒體或(huo)焙燒體陶(tao)瓷粗加(jia)(jia)工(gong)(gong)時(shi),易于(yu)出現強(qiang)度(du)不(bu)(bu)足或(huo)表面加(jia)(jia)工(gong)(gong)缺(que)陷問題,或(huo)由于(yu)裝卡不(bu)(bu)充分等原因,而不(bu)(bu)能獲得所(suo)要求的最(zui)(zui)終加(jia)(jia)工(gong)(gong)形(xing)狀;由于(yu)燒結(jie)時(shi)不(bu)(bu)能保持(chi)收縮均勻,在粗加(jia)(jia)工(gong)(gong)時(shi)就(jiu)要使(shi)尺(chi)寸不(bu)(bu)要太靠近最(zui)(zui)終尺(chi)寸,所(suo)以(yi)留有(you)的精加(jia)(jia)工(gong)(gong)的余(yu)量(liang)就(jiu)大(da);對于(yu)金屬加(jia)(jia)工(gong)(gong),精加(jia)(jia)工(gong)(gong)余(yu)量(liang)如考慮熱變(bian)形(xing)和熱處理(li)產生的黑皮(pi),則應盡可(ke)能留百分之幾毫米(mi);對陶(tao)瓷加(jia)(jia)工(gong)(gong)來說,精加(jia)(jia)工(gong)(gong)余(yu)量(liang)則需有(you)幾毫米(mi)甚至十幾毫米(mi);加(jia)(jia)工(gong)(gong)余(yu)量(liang)大(da),生產率降低,生產成本升高(gao);
三、氧化鋯陶瓷加工的另一個問題是加工刀具費用大切削加工需使用高價的燒結金剛石、CBN刀(dao)具,精加(jia)(jia)(jia)工也(ye)是以金剛(gang)石砂輪為主(zhu),因此刀(dao)具費用要高出金屬切削所用刀(dao)具數(shu)十倍(bei)至(zhi)百倍(bei);氧化鋯陶(tao)瓷(ci)的強度對于(yu)加(jia)(jia)(jia)工條件是敏感的,難于(yu)實現高效率加(jia)(jia)(jia)工所以氧化鋯陶(tao)瓷(ci)的加(jia)(jia)(jia)工成本(ben)相對于(yu)普(pu)通材料要高很多。