上海統勛萬向節聯軸器材質的技術要求

上海統勛萬(wan)向節聯軸器(qi)材質的技術要求：

萬向(xiang)節聯(lian)軸(zhou)器(qi)材(cai)質自(zi)(zi)(zi)由(you)鍛(duan)造(zao)所用(yong)(yong)(yong)工(gong)(gong)(gong)(gong)具(ju)(ju)和(he)設(she)備簡單，通用(yong)(yong)(yong)性(xing)好，成(cheng)本低(di)。同(tong)鑄造(zao)毛坯相比(bi)，自(zi)(zi)(zi)由(you)鍛(duan)消除了縮孔、縮松、氣孔等(deng)缺陷，使(shi)毛坯具(ju)(ju)有(you)(you)更高的(de)(de)(de)(de)(de)(de)力學性(xing)能。鍛(duan)件(jian)(jian)(jian)(jian)形(xing)狀簡單，操作靈活。因(yin)此，它在(zai)重(zhong)型機(ji)器(qi)及重(zhong)要(yao)(yao)(yao)零件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)制造(zao)上(shang)有(you)(you)特別重(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de)(de)(de)意義(yi)。自(zi)(zi)(zi)由(you)鍛(duan)造(zao)分手工(gong)(gong)(gong)(gong)自(zi)(zi)(zi)由(you)鍛(duan)和(he)機(ji)器(qi)自(zi)(zi)(zi)由(you)鍛(duan)。手工(gong)(gong)(gong)(gong)自(zi)(zi)(zi)由(you)鍛(duan)生(sheng)產效(xiao)率低(di)，勞動強度大，*用(yong)(yong)(yong)于(yu)修(xiu)配或(huo)簡單、小型、小批(pi)鍛(duan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)生(sheng)產。在(zai)現(xian)代工(gong)(gong)(gong)(gong)業生(sheng)產中，機(ji)器(qi)自(zi)(zi)(zi)由(you)鍛(duan)已成(cheng)為鍛(duan)造(zao)生(sheng)產的(de)(de)(de)(de)(de)(de)主要(yao)(yao)(yao)方(fang)法，在(zai)重(zhong)型機(ji)械(xie)制造(zao)中，它具(ju)(ju)有(you)(you)特別重(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de)(de)(de)作用(yong)(yong)(yong)。聯(lian)軸(zhou)器(qi)鍛(duan)件(jian)(jian)(jian)(jian)材(cai)料需有(you)(you)檢(jian)驗合格證書，如需代用(yong)(yong)(yong)材(cai)料，須征(zheng)得(de)需方(fang)同(tong)意，并有(you)(you)書面(mian)文件(jian)(jian)(jian)(jian)。鍛(duan)件(jian)(jian)(jian)(jian)應在(zai)具(ju)(ju)有(you)(you)足夠噸位的(de)(de)(de)(de)(de)(de)水壓或(huo)鍛(duan)錘(chui)上(shang)進(jin)行(xing)鍛(duan)造(zao)，鍛(duan)造(zao)應有(you)(you)足夠的(de)(de)(de)(de)(de)(de)鍛(duan)造(zao)比(bi)，使(shi)整(zheng)個截面(mian)鍛(duan)透，以獲得(de)均勻性(xing)組(zu)織。鍛(duan)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)軸(zhou)線應相當鋼(gang)錠的(de)(de)(de)(de)(de)(de)中心線。鍛(duan)件(jian)(jian)(jian)(jian)應由(you)鋼(gang)錠或(huo)鋼(gang)坯鍛(duan)造(zao)成(cheng)形(xing)。允許(xu)倍(bei)尺鍛(duan)造(zao)，一(yi)般應作分離熱(re)處(chu)(chu)(chu)理(li)(li)(li)。熱(re)處(chu)(chu)(chu)理(li)(li)(li)和(he)機(ji)械(xie)加(jia)工(gong)(gong)(gong)(gong)要(yao)(yao)(yao)求：鍛(duan)造(zao)后(hou)(hou)(hou)熱(re)處(chu)(chu)(chu)理(li)(li)(li)：鍛(duan)件(jian)(jian)(jian)(jian)鍛(duan)后(hou)(hou)(hou)應進(jin)行(xing)預熱(re)處(chu)(chu)(chu)理(li)(li)(li)，以改善(shan)組(zu)織和(he)可加(jia)工(gong)(gong)(gong)(gong)性(xing)。粗加(jia)工(gong)(gong)(gong)(gong)：鍛(duan)件(jian)(jian)(jian)(jian)性(xing)能熱(re)處(chu)(chu)(chu)理(li)(li)(li)前(qian)應進(jin)行(xing)粗加(jia)工(gong)(gong)(gong)(gong)，留(liu)*小加(jia)工(gong)(gong)(gong)(gong)余量(liang)。性(xing)能熱(re)處(chu)(chu)(chu)理(li)(li)(li)：鍛(duan)件(jian)(jian)(jian)(jian)應進(jin)行(xing)淬火和(he)回火，以達所要(yao)(yao)(yao)求的(de)(de)(de)(de)(de)(de)性(xing)能。性(xing)能熱(re)處(chu)(chu)(chu)理(li)(li)(li)后(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)機(ji)加(jia)工(gong)(gong)(gong)(gong)：機(ji)械(xie)性(xing)能合格后(hou)(hou)(hou)，鍛(duan)件(jian)(jian)(jian)(jian)加(jia)工(gong)(gong)(gong)(gong)到需方(fang)提供的(de)(de)(de)(de)(de)(de)圖樣所規定(ding)的(de)(de)(de)(de)(de)(de)尺寸和(he)表面(mian)粗糙(cao)度。