添加時(shi)間(jian):
2022
-
04
-
28
瀏覽次(ci)數：
10016
模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)制約著(zhu)精(jing)(jing)(jing)沖(chong)(chong)(chong)技術的(de)(de)(de)(de)(de)(de)(de)應用(yong)(yong)(yong)與(yu)發展的(de)(de)(de)(de)(de)(de)(de)瓶頸,因此對(dui)(dui)于(yu)(yu)(yu)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)我(wo)們(men)一(yi)(yi)定要(yao)關注(zhu)起(qi)來,下面(mian)小(xiao)編(bian)給大(da)(da)家(jia)提(ti)(ti)供影(ying)響模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)的(de)(de)(de)(de)(de)(de)(de)因素有(you)哪些,并告訴(su)大(da)(da)家(jia)提(ti)(ti)高(gao)(gao)(gao)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)有(you)哪些途徑(jing)。影(ying)響模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)因素1、精(jing)(jing)(jing)沖(chong)(chong)(chong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)結構(gou)工(gong)(gong)(gong)藝(yi)性(xing)(尖(jian)角(jiao)(jiao)、薄壁、懸壁、尺寸(cun)公差等(deng))。2、精(jing)(jing)(jing)沖(chong)(chong)(chong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)材(cai)(cai)料(liao)(材(cai)(cai)質(zhi)、料(liao)厚(hou)、硬(ying)(ying)(ying)度、塑性(xing)、表面(mian)質(zhi)量)。3、精(jing)(jing)(jing)沖(chong)(chong)(chong)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)結構(gou)(強度、剛度、模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)導(dao)向(xiang)、小(xiao)凸(tu)模(mo)(mo)(mo)的(de)(de)(de)(de)(de)(de)(de)導(dao)向(xiang)、排氣和潤滑)。4、模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)材(cai)(cai)料(liao)(材(cai)(cai)質(zhi)、碳化物大(da)(da)小(xiao)和均勻性(xing)、硬(ying)(ying)(ying)度、韌性(xing))。5、模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)制造(模(mo)(mo)(mo)坯鍛造、加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)、熱處(chu)理(li)(li)、線切(qie)割、研磨、裝配)。6、生產操作(zuo)(調模(mo)(mo)(mo)高(gao)(gao)(gao)度、壓(ya)力、速度、送料(liao)精(jing)(jing)(jing)度、坯料(liao)清潔、潤滑)。7、模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)維修(合理(li)(li)存放、合理(li)(li)刃(ren)磨、清潔、應力回(hui)火、防銹)。提(ti)(ti)高(gao)(gao)(gao)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)使(shi)用(yong)(yong)(yong)壽(shou)(shou)(shou)命(ming)途徑(jing)1、審查精(jing)(jing)(jing)沖(chong)(chong)(chong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)工(gong)(gong)(gong)藝(yi)性(xing)。精(jing)(jing)(jing)沖(chong)(chong)(chong)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)工(gong)(gong)(gong)藝(yi)性(xing)(特別是(shi)圓(yuan)角(jiao)(jiao)半(ban)徑(jing))對(dui)(dui)精(jing)(jing)(jing)沖(chong)(chong)(chong)模(mo)(mo)(mo)的(de)(de)(de)(de)(de)(de)(de)壽(shou)(shou)(shou)命(ming)有(you)一(yi)(yi)定影(ying)響,對(dui)(dui)于(yu)(yu)(yu)工(gong)(gong)(gong)藝(yi)性(xing)較(jiao)差的(de)(de)(de)(de)(de)(de)(de)(尤其(qi)尖(jian)角(jiao)(jiao)),應向(xiang)設(she)計部門提(ti)(ti)出改善(shan)建議。圖1為零(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)圓(yuan)角(jiao)(jiao)半(ban)徑(jing)與(yu)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)壽(shou)(shou)(shou)命(ming)的(de)(de)(de)(de)(de)(de)(de)關系,一(yi)(yi)般R/t≥0.8較(jiao)好,如小(xiao)于(yu)(yu)(yu)0.25則會導(dao)致模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)壽(shou)(shou)(shou)命(ming)較(jiao)低。2、精(jing)(jing)(jing)沖(chong)(chong)(chong)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)材(cai)(cai)料(liao)選擇(ze)和熱處(chu)理(li)(li)。精(jing)(jing)(jing)沖(chong)(chong)(chong)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)主(zhu)(zhu)要(yao)工(gong)(gong)(gong)作(zuo)零(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)材(cai)(cai)料(liao)一(yi)(yi)般選Cr12MoV,當制件(jian)(jian)(jian)厚(hou)度大(da)(da)于(yu)(yu)(yu)4mm時,凸(tu)、凹模(mo)(mo)(mo)可(ke)采(cai)用(yong)(yong)(yong)W6Mo5Cr4V2高(gao)(gao)(gao)速鋼。對(dui)(dui)于(yu)(yu)(yu)工(gong)(gong)(gong)作(zuo)強度很大(da)(da)、受力苛刻(ke)的(de)(de)(de)(de)(de)(de)(de)凸(tu)模(mo)(mo)(mo)和凹模(mo)(mo)(mo),則采(cai)用(yong)(yong)(yong)粉末冶金(jin)鋼(V4、ASP23、ASP30)或硬(ying)(ying)(ying)質(zhi)合金(jin)GT30。凸(tu)、凹模(mo)(mo)(mo)熱處(chu)理(li)(li)的(de)(de)(de)(de)(de)(de)(de)硬(ying)(ying)(ying)度一(yi)(yi)般取58~62HRC,對(dui)(dui)于(yu)(yu)(yu)以磨損為主(zhu)(zhu)要(yao)失效形(xing)(xing)式(shi)的(de)(de)(de)(de)(de)(de)(de)、形(xing)(xing)狀簡單的(de)(de)(de)(de)(de)(de)(de)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju),可(ke)取60~64HRC;對(dui)(dui)于(yu)(yu)(yu)形(xing)(xing)狀復雜、并以崩刃(ren)為主(zhu)(zhu)要(yao)失效形(xing)(xing)式(shi)的(de)(de)(de)(de)(de)(de)(de)模(mo)(mo)(mo)具(ju)(ju)(ju)(ju),可(ke)取56~60HRC,甚至(zhi)54~58HRC。對(dui)(dui)于(yu)(yu)(yu)Cr12MoV模(mo)(mo)(mo)具(ju)(ju)(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)熱處(chu)理(li)(li),當刃(ren)口(kou)形(xing)(xing)狀較(jiao)簡單、沖(chong)(chong)(chong)裁(cai)料(liao)厚(hou)較(jiao)薄(t≤3mm),采(cai)用(yong)(yong)(yong)1次硬(ying)(ying)(ying)化工(gong)(gong)(gong)藝(yi)(1020°C淬(cui)火、220°C回(hui)火)可(ke)獲得較(jiao)高(gao)(gao)(gao)的(de)(de)(de)(de)(de)(de)(de)強度和耐(nai)磨性(xing)。當刃(ren)口(kou)形(xing)(xing)狀較(jiao)復雜、沖(chong)(chong)(chong)裁(cai)料(liao)較(jiao)厚(hou)(t3mm)時,采(cai)用(yong)(yong)(yong)2次硬(ying)(ying)(ying)化工(gong)(gong)(gong)藝(yi)(1080°C淬(cui)火、520&#...