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鬥(dou)齒(chi)有(you)時(shi)候(hou)在(zai)工(gong)作(zuo)時(shi)會(hui)受(shou)到(dao)不(bu)同(tong)程(cheng)度(du)的(de)損(sun)傷(shang)，導(dao)致(zhi)鬥(dou)齒(chi)失(shi)效(xiao)，受(shou)力(li)分(fen)析(xi)一(yi)般(ban)鬥(dou)齒(chi)工(gong)作(zuo)麵(mian)與(yu)被(bei)挖(wa)掘(jue)物(wu)相(xiang)接(jie)觸(chu)，在(zai)一(yi)個(ge)完(wan)整(zheng)的(de)挖(wa)掘(jue)過(guo)程(cheng)中(zhong)不(bu)同(tong)的(de)工(gong)作(zuo)階(jie)段(duan)其(qi)受(shou)力(li)情(qing)況(kuang)不(bu)同(tong)。齒(chi)尖(jian)部(bu)位(wei)首(shou)先(xian)接(jie)觸(chu)物(wu)料(liao)表(biao)麵(mian)時(shi)，由(you)於(yu)速(su)度(du)較(jiao)快(kuai)，鬥(dou)齒(chi)尖(jian)部(bu)分(fen)受(shou)到(dao)較(jiao)強(qiang)烈(lie)的(de)衝(chong)擊(ji)。若(ruo)鬥(dou)齒(chi)的(de)屈(qu)服(fu)強(qiang)度(du)低(di)，將(jiang)會(hui)在(zai)尖(jian)部(bu)產(chan)生(sheng)塑(su)性(xing)變(bian)形(xing)。隨(sui)著(zhe)挖(wa)掘(jue)深(shen)度(du)的(de)加(jia)大(da)，鬥(dou)齒(chi)受(shou)力(li)情(qing)況(kuang)會(hui)有(you)所(suo)改(gai)變(bian)。當(dang)鬥(dou)齒(chi)切(qie)割(ge)物(wu)料(liao)時(shi)，鬥(dou)齒(chi)與(yu)物(wu)料(liao)發(fa)生(sheng)相(xiang)對(dui)運(yun)動(dong)，在(zai)表(biao)麵(mian)產(chan)生(sheng)很(hen)大(da)的(de)正(zheng)擠(ji)壓(ya)力(li)，從(cong)而(er)在(zai)鬥(dou)齒(chi)工(gong)作(zuo)麵(mian)和(he)物(wu)料(liao)之(zhi)間(jian)產(chan)生(sheng)較(jiao)大(da)的(de)摩(mo)擦(ca)力(li)。
所suo以yi建jian議yi鑄zhu造zao成cheng型xing後hou，對dui寧ning波bo鬥dou齒chi鑄zhu件jian進jin行xing適shi當dang的de正zheng火huo，以yi改gai善shan組zu織zhi和he性xing能neng，提ti高gao使shi用yong壽shou命ming。對dui鑄zhu件jian進jin行xing合he理li的de熱re處chu理li後hou，在zai相xiang同tong的de工gong況kuang條tiao件jian下xia，寧ning波bo鬥dou齒chi的de使shi用yong壽shou命ming提ti高gao了le近jin2倍。
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