溫(wen)(wen)(wen)度(du)(du)越高，溶(rong)解和(he)擴散速率就越快，被(bei)一定量的(de)Co溶(rong)解的(de)WC就越多，即細WC向粗WC遷移的(de)速度(du)(du)加(jia)快。過高的(de)燒(shao)(shao)結溫(wen)(wen)(wen)度(du)(du)易產生異常的(de)晶(jing)粒(li)(li)(li)(li)長大(da)。在(zai)較(jiao)低溫(wen)(wen)(wen)度(du)(du)下(xia)延長燒(shao)(shao)結時(shi)(shi)(shi)間(jian)，同樣可(ke)(ke)以(yi)使晶(jing)粒(li)(li)(li)(li)長大(da)。可(ke)(ke)見燒(shao)(shao)結溫(wen)(wen)(wen)度(du)(du)和(he)時(shi)(shi)(shi)間(jian)可(ke)(ke)以(yi)互(hu)補(bu)。通過調整(zheng)溫(wen)(wen)(wen)度(du)(du)或(huo)時(shi)(shi)(shi)間(jian)可(ke)(ke)以(yi)獲得相同的(de)WC晶(jing)粒(li)(li)(li)(li)度(du)(du)。燒(shao)(shao)結溫(wen)(wen)(wen)度(du)(du)對碳化鎢晶(jing)粒(li)(li)(li)(li)長大(da)的(de)影響。平均粒(li)(li)(li)(li)度(du)(du)增(zeng)大(da)時(shi)(shi)(shi)，晶(jing)粒(li)(li)(li)(li)長大(da)迅速下(xia)降，平均粒(li)(li)(li)(li)度(du)(du)為(wei)3um或(huo)3um以(yi)上時(shi)(shi)(shi)，晶(jing)粒(li)(li)(li)(li)長大(da)對燒(shao)(shao)結溫(wen)(wen)(wen)度(du)(du)不大(da)敏(min)感，在(zai)很(hen)寬(kuan)的(de)燒(shao)(shao)結溫(wen)(wen)(wen)度(du)(du)范圍(wei)內，其粒(li)(li)(li)(li)度(du)(du)或(huo)機(ji)械性能變化很(hen)小。
keyword：硬質合金模具
文(wen)章(zhang)來源：//cgoli.com/
