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如何制定正確的壓鑄工藝

發布日期:2018-10-11 作者: 點擊:

壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)是一個壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)廠技術(shu)(shu)水平的(de)(de)(de)(de)(de)(de)體(ti)現(xian),他能把壓(ya)(ya)鑄(zhu)(zhu)機(ji)(ji)特(te)(te)性(xing)、模(mo)具特(te)(te)性(xing)、鑄(zhu)(zhu)件(jian)特(te)(te)性(xing)、壓(ya)(ya)鑄(zhu)(zhu)合金特(te)(te)性(xing)等生(sheng)產(chan)要素正確的(de)(de)(de)(de)(de)(de)結合起來(lai),以最低的(de)(de)(de)(de)(de)(de)成本,生(sheng)產(chan)滿足客戶要求(qiu)的(de)(de)(de)(de)(de)(de)壓(ya)(ya)鑄(zhu)(zhu)產(chan)品。鈦(tai)浩機(ji)(ji)械是以機(ji)(ji)床主軸(zhou)(zhou)、回轉頂針、絲杠絲桿(gan)(gan)、軸(zhou)(zhou)加(jia)工(gong)(gong)(gong)(gong)(gong)(gong)、數(shu)控車床加(jia)工(gong)(gong)(gong)(gong)(gong)(gong)、刀柄刀桿(gan)(gan)、夾(jia)頭(tou)接桿(gan)(gan)為(wei)公司(si)的(de)(de)(de)(de)(de)(de)主打產(chan)品,因此(ci),必須重視壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)工(gong)(gong)(gong)(gong)(gong)(gong)程師的(de)(de)(de)(de)(de)(de)選(xuan)拔和培訓。壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)工(gong)(gong)(gong)(gong)(gong)(gong)程師是壓(ya)(ya)鑄(zhu)(zhu)生(sheng)產(chan)現(xian)場技術(shu)(shu)總負責人,除制定正確的(de)(de)(de)(de)(de)(de)壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)(yi),根據生(sheng)產(chan)要素變化及(ji)時修(xiu)訂壓(ya)(ya)鑄(zhu)(zhu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)外,還負責對模(mo)具安裝調整工(gong)(gong)(gong)(gong)(gong)(gong)、壓(ya)(ya)鑄(zhu)(zhu)操作工(gong)(gong)(gong)(gong)(gong)(gong)、模(mo)具維修(xiu)工(gong)(gong)(gong)(gong)(gong)(gong)的(de)(de)(de)(de)(de)(de)培訓和提(ti)高(gao)。

(1)確(que)定最合理(li)的生(sheng)(sheng)產(chan)率(lv)(lv),規定每一次壓射周期的循(xun)環時間。過(guo)低的生(sheng)(sheng)產(chan)率(lv)(lv)固然不利(li)于提高經濟(ji)效益(yi),過(guo)高的生(sheng)(sheng)產(chan)率(lv)(lv)往往以犧牲模具壽(shou)命和鑄(zhu)件合格(ge)率(lv)(lv)為代價(jia),算總帳細(xi)帳經濟(ji)益(yi)可能更差。

(2)確定正確的壓(ya)(ya)鑄(zhu)(zhu)參數。在確保(bao)鑄(zhu)(zhu)件符合(he)客戶質(zhi)量標準的前(qian)提(ti)下,應使壓(ya)(ya)射(she)速(su)度(du)、壓(ya)(ya)射(she)壓(ya)(ya)力(li)(li)、合(he)金(jin)溫(wen)度(du)最低。這樣,有利于降低機(ji)器、模具(ju)負荷,降低故障,提(ti)高(gao)壽命。根據壓(ya)(ya)鑄(zhu)(zhu)機(ji)特性、模具(ju)特性、鑄(zhu)(zhu)件特性、壓(ya)(ya)鑄(zhu)(zhu)鋁(lv)合(he)金(jin)特性等(deng)腰三角形,確定快壓(ya)(ya)射(she)速(su)度(du)、壓(ya)(ya)射(she)壓(ya)(ya)力(li)(li)、增壓(ya)(ya)壓(ya)(ya)力(li)(li)、慢(man)壓(ya)(ya)射(she)行(xing)程、快壓(ya)(ya)射(she)行(xing)程、沖頭跟出距離、推出行(xing)程、保(bao)壓(ya)(ya)時間、推了(le)復位時間、合(he)金(jin)溫(wen)度(du)、模具(ju)溫(wen)度(du)等(deng)。

(3)使用水基涂(tu)(tu)(tu)料,必須制訂(ding)嚴格詳細的噴(pen)涂(tu)(tu)(tu)工藝。涂(tu)(tu)(tu)料品(pin)牌(pai),涂(tu)(tu)(tu)料與(yu)水的比例,模具每(mei)一個部位的噴(pen)涂(tu)(tu)(tu)量(或(huo)噴(pen)涂(tu)(tu)(tu)時間)和噴(pen)涂(tu)(tu)(tu)順(shun)序,壓縮空(kong)氣壓力,噴(pen)槍與(yu)成型表面(mian)的距離(li),噴(pen)涂(tu)(tu)(tu)方向(xiang)與(yu)成型表面(mian)的角(jiao)度等。

(4)根據壓鑄(zhu)模實際確(que)定(ding)正確(que)的(de)模具(ju)(ju)冷(leng)卻(que)(que)方案。正確(que)的(de)模具(ju)(ju)冷(leng)卻(que)(que)方案對生產效率、鑄(zhu)件質量(liang)、模具(ju)(ju)壽(shou)命有極大的(de)影響。方案應(ying)規定(ding)冷(leng)卻(que)(que)水開(kai)(kai)戶方法,壓鑄(zhu)幾(ji)個(ge)模次開(kai)(kai)始冷(leng)卻(que)(que),相(xiang)隔幾(ji)個(ge)模次分(fen)幾(ji)次把冷(leng)卻(que)(que)水閥門開(kai)(kai)到規定(ding)開(kai)(kai)度。點冷(leng)卻(que)(que)系統的(de)冷(leng)卻(que)(que)強(qiang)度應(ying)由壓鑄(zhu)工藝工程師現場(chang)調定(ding),配合噴涂(tu)達到模具(ju)(ju)熱平衡。

(5)規定(ding)對(dui)不同滑動動部(bu)(bu)位(wei),如沖頭、導柱、導套、抽(chou)芯機構(gou)、推桿(gan)、復位(wei)桿(gan)等部(bu)(bu)位(wei)的不同潤滑頻率。

(6)制(zhi)訂每(mei)一(yi)個壓鑄件(jian)的壓鑄操(cao)作(zuo)規程,并培訓和監督(du)壓鑄工按規程操(cao)作(zuo)。

(7)根據模(mo)(mo)具(ju)復(fu)雜(za)程度和新舊(jiu)程度,確定適當的(de)模(mo)(mo)具(ju)預(yu)防性維修周期(qi)。適當的(de)模(mo)(mo)具(ju)預(yu)防性維修周期(qi)應當是模(mo)(mo)具(ju)使(shi)用(yong)中將要(yao)出(chu)現故(gu)障(zhang)而還(huan)沒有出(chu)現故(gu)障(zhang)的(de)壓鑄模(mo)(mo)次。模(mo)(mo)具(ju)使(shi)用(yong)中已經(jing)出(chu)現故(gu)障(zhang),不能繼續生(sheng)產,被迫進(jin)行修理,不是被提(ti)倡(chang)的(de)方(fang)法。

(8)根據模具(ju)復雜(za)程度、新舊(jiu)程度和(he)粘(zhan)模危(wei)險程度,確定模塊消除應力周期(qi)(一般5000~15000模次進(jin)行一次)和(he)是否需(xu)要(yao)進(jin)行表面處理。


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