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冷彎成型機切鋸下料切割機選擇星大盛牌在線切割下料機

發布時間:  2022/3/8
冷(leng)彎(wan)(wan)技(ji)(ji)(ji)(ji)術(shu)(shu)設計時(shi)應注意(yi)的(de)(de)問(wen)題(ti)(ti)(ti)(ti)近年來,用(yong)戶對冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)產(chan)(chan)品(pin)的(de)(de)認(ren)識已經大(da)(da)大(da)(da)提高,冷(leng)彎(wan)(wan)型(xing)(xing)(xing)(xing)鋼(gang)(gang)斷面(mian)形狀可(ke)以很(hen)復雜,生(sheng)(sheng)產(chan)(chan)設備(bei)及工(gong)(gong)藝則比(bi)較簡(jian)單,一次性投資小,上馬快,組織生(sheng)(sheng)產(chan)(chan)靈活,長(chang)度、寬度、厚度任(ren)意(yi)選擇,不(bu)受批量限(xian)制(zhi);產(chan)(chan)品(pin)表(biao)面(mian)光滑,尺(chi)寸精(jing)度高;相(xiang)同斷面(mian)形狀尺(chi)寸性能(neng)相(xiang)同,可(ke)節(jie)約(yue)金(jin)屬15-50%,雖然(ran)(ran)單價高于(yu)(yu)熱(re)軋型(xing)(xing)(xing)(xing)材,但工(gong)(gong)程造價仍低(di)于(yu)(yu)常用(yong)材料,這些特(te)長(chang)決定他生(sheng)(sheng)命力(li)(li)(li)強(qiang)的(de)(de)特(te)點,冷(leng)彎(wan)(wan)型(xing)(xing)(xing)(xing)鋼(gang)(gang)必(bi)然(ran)(ran)會受到(dao)國名經濟(ji)各(ge)行業(ye)、各(ge)部門的(de)(de)歡(huan)迎。原來采用(yong)熱(re)軋型(xing)(xing)(xing)(xing)鋼(gang)(gang)的(de)(de)大(da)(da)市(shi)場,逐步(bu)被(bei)冷(leng)彎(wan)(wan)型(xing)(xing)(xing)(xing)鋼(gang)(gang)所取代,將是不(bu)可(ke)抗拒的(de)(de)發展(zhan)(zhan)趨勢(shi)。我國冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)機械產(chan)(chan)業(ye)的(de)(de)發展(zhan)(zhan),也同時(shi)存(cun)在著(zhu)諸如(ru)體制(zhi)問(wen)題(ti)(ti)(ti)(ti)尚未(wei)解決,技(ji)(ji)(ji)(ji)術(shu)(shu)裝備(bei)落后(hou),技(ji)(ji)(ji)(ji)術(shu)(shu)創新能(neng)力(li)(li)(li)薄弱(ruo),機組不(bu)配套,技(ji)(ji)(ji)(ji)術(shu)(shu)參數沒有(you)(you)標(biao)準化等各(ge)方(fang)面(mian)的(de)(de)問(wen)題(ti)(ti)(ti)(ti),這些都(dou)制(zhi)約(yue)了我國冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)技(ji)(ji)(ji)(ji)術(shu)(shu)的(de)(de)健(jian)康發展(zhan)(zhan)。如(ru)何抓住這次機遇,使冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)技(ji)(ji)(ji)(ji)術(shu)(shu)更有(you)(you)效的(de)(de)發展(zhan)(zhan),是一個(ge)值(zhi)得深思的(de)(de)問(wen)題(ti)(ti)(ti)(ti),石家莊(zhuang)鐵能(neng)機電設備(bei)有(you)(you)限(xian)公司認(ren)為要(yao)從五個(ge)方(fang)面(mian)著(zhu)手規劃,一是要(yao)根據我國國情大(da)(da)力(li)(li)(li)開拓冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)產(chan)(chan)品(pin)的(de)(de)市(shi)場;二(er)是制(zhi)定一套完整、先(xian)進(jin)的(de)(de)冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)技(ji)(ji)(ji)(ji)術(shu)(shu)的(de)(de)標(biao)準體系;三要(yao)提高裝備(bei)技(ji)(ji)(ji)(ji)術(shu)(shu)裝備(bei)水平;四要(yao)提高技(ji)(ji)(ji)(ji)術(shu)(shu)管理水平;五是要(yao)引導我國冷(leng)彎(wan)(wan)由(you)于(yu)(yu)冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)的(de)(de)產(chan)(chan)品(pin)有(you)(you)諸多的(de)(de)優(you)越性,國家大(da)(da)力(li)(li)(li)推廣(guang)冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)技(ji)(ji)(ji)(ji)術(shu)(shu)的(de)(de)發展(zhan)(zhan)和研究(jiu)。在冷(leng)彎(wan)(wan)成(cheng)(cheng)(cheng)型(xing)(xing)(xing)(xing)過程中(zhong),其加工(gong)(gong)方(fang)式屬于(yu)(yu)機械強(qiang)制(zhi)變形,成(cheng)(cheng)(cheng)形后(hou)勢(shi)必(bi)存(cun)在很(hen)大(da)(da)的(de)(de)內應力(li)(li)(li)。冷(leng)彎(wan)(wan)后(hou)雖然(ran)(ran)有(you)(you)校正工(gong)(gong)序,但也只(zhi)是對型(xing)(xing)(xing)(xing)鋼(gang)(gang)外(wai)形尺(chi)寸予以精(jing)確,對消除內應力(li)(li)(li)效果并(bing)不(bu)大(da)(da)。其成(cheng)(cheng)(cheng)品(pin)存(cun)放(fang)一段(duan)時(shi)間后(hou)時(shi)效變形很(hen)明顯,這說(shuo)明冷(leng)彎(wan)(wan)型(xing)(xing)(xing)(xing)鋼(gang)(gang)確實有(you)(you)很(hen)大(da)(da)的(de)(de)內應力(li)(li)(li)存(cun)在。

星(xing)大盛全自動(dong)切(qie)割(ge)臺配套冷彎成型(xing)機(ji)在線同步下料18928545835楊工
速度提高(gao)了幾倍(bei)!切(qie)鋸效果質量不(bu)再有披風?毛刺(ci)?平口?等煩惱


冷彎(wan)(wan)設計(ji)(ji)時應(ying)(ying)注意(yi)的(de)(de)(de)問題從設計(ji)(ji)冷彎(wan)(wan)成形(xing)(xing)工藝時的(de)(de)(de)思路和應(ying)(ying)考慮的(de)(de)(de)幾個(ge)主要方面:確(que)定(ding)坯料(liao)(liao)(liao)尺(chi)寸公(gong)差(cha)和硬(ying)度(du)范(fan)圍制(zhi)件(jian)(jian)用何種材料(liao)(liao)(liao),由產品設計(ji)(ji)者在零件(jian)(jian)圖上確(que)定(ding);制(zhi)件(jian)(jian)的(de)(de)(de)機械性(xing)能(包括硬(ying)度(du)),也因制(zhi)件(jian)(jian)坯料(liao)(liao)(liao)的(de)(de)(de)選定(ding)而基本確(que)定(ding)了(le)。制(zhi)件(jian)(jian)材料(liao)(liao)(liao)的(de)(de)(de)硬(ying)度(du),如果參考的(de)(de)(de)成型(xing)規律(lv),將會對設計(ji)(ji)和生產起到(dao)指導作用無特殊要求(如熱處理(li)等),一般(ban)由坯料(liao)(liao)(liao)硬(ying)度(du)確(que)定(ding)。而坯料(liao)(liao)(liao)硬(ying)度(du)的(de)(de)(de)高低及其變動(dong)范(fan)圍的(de)(de)(de)大小,往(wang)(wang)往(wang)(wang)會影響(xiang)冷彎(wan)(wan)成形(xing)(xing)工藝的(de)(de)(de)順利進(jin)行。過硬(ying),常使(shi)制(zhi)件(jian)(jian)在冷彎(wan)(wan)過程中(zhong)產生裂紋(wen);同(tong)批坯料(liao)(liao)(liao)軟硬(ying)差(cha)值過大,也會使(shi)制(zhi)件(jian)(jian)截面形(xing)(xing)狀和尺(chi)寸在冷彎(wan)(wan)過程中(zhong)不穩定(ding)。
所(suo)以(yi)(yi),在(zai)(zai)(zai)(zai)設(she)(she)(she)計(ji)(ji)冷彎(wan)(wan)工(gong)藝(yi)時(shi),首先必須正(zheng)確(que)(que)確(que)(que)定(ding)(ding)坯(pi)(pi)料(liao)(liao)(liao)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)公(gong)(gong)(gong)(gong)差(cha)和(he)(he)(he)硬(ying)度(du)。制(zhi)(zhi)件坯(pi)(pi)料(liao)(liao)(liao)硬(ying)度(du)的(de)(de)(de)(de)控制(zhi)(zhi)范(fan)圍,不僅應視制(zhi)(zhi)件的(de)(de)(de)(de)機械(xie)(xie)性能(neng)要(yao)求和(he)(he)(he)斷(duan)面幾何形(xing)(xing)(xing)(xing)(xing)狀尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)的(de)(de)(de)(de)復(fu)雜程(cheng)度(du)而定(ding)(ding),還和(he)(he)(he)冷彎(wan)(wan)成形(xing)(xing)(xing)(xing)(xing)工(gong)藝(yi)設(she)(she)(she)汁時(shi)變形(xing)(xing)(xing)(xing)(xing)量(liang)的(de)(de)(de)(de)大小有密(mi)切關系。一般制(zhi)(zhi)件斷(duan)面幾何形(xing)(xing)(xing)(xing)(xing)狀和(he)(he)(he)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)愈(yu)復(fu)雜,冷彎(wan)(wan)成形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)變形(xing)(xing)(xing)(xing)(xing)量(liang)愈(yu)大,制(zhi)(zhi)件機械(xie)(xie)性能(neng)要(yao)求坯(pi)(pi)料(liao)(liao)(liao)硬(ying)度(du)愈(yu)高,在(zai)(zai)(zai)(zai)冷彎(wan)(wan)過(guo)(guo)程(cheng)中就(jiu)愈(yu)易產(chan)(chan)生(sheng)裂紋(wen)和(he)(he)(he)因彈性回跳(tiao)而造成的(de)(de)(de)(de)制(zhi)(zhi)件截(jie)(jie)面形(xing)(xing)(xing)(xing)(xing)狀及(ji)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)的(de)(de)(de)(de)不穩定(ding)(ding),最終影響制(zhi)(zhi)品(pin)的(de)(de)(de)(de)精(jing)度(du)和(he)(he)(he)質(zhi)量(liang)。但(dan)坯(pi)(pi)件的(de)(de)(de)(de)硬(ying)度(du)到底應確(que)(que)定(ding)(ding)在(zai)(zai)(zai)(zai)何范(fan)圍為適宜,最后(hou)(hou)應通過(guo)(guo)冷彎(wan)(wan)成形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)實踐(jian)(jian),給以(yi)(yi)修正(zheng)確(que)(que)定(ding)(ding)。坯(pi)(pi)料(liao)(liao)(liao)的(de)(de)(de)(de)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)與(yu)公(gong)(gong)(gong)(gong)差(cha)也隨制(zhi)(zhi)品(pin)的(de)(de)(de)(de)截(jie)(jie)面形(xing)(xing)(xing)(xing)(xing)狀及(ji)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)的(de)(de)(de)(de)精(jing)度(du)要(yao)求而定(ding)(ding)。一般,坯(pi)(pi)料(liao)(liao)(liao)的(de)(de)(de)(de)厚度(du)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)及(ji)公(gong)(gong)(gong)(gong)差(cha)取(qu)制(zhi)(zhi)品(pin)截(jie)(jie)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)厚度(du)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)及(ji)公(gong)(gong)(gong)(gong)差(cha)。若制(zhi)(zhi)品(pin)無(wu)厚度(du)公(gong)(gong)(gong)(gong)差(cha)時(shi),坯(pi)(pi)料(liao)(liao)(liao)厚度(du)公(gong)(gong)(gong)(gong)差(cha)可取(qu)帶(dai)料(liao)(liao)(liao)的(de)(de)(de)(de)標(biao)(biao)準公(gong)(gong)(gong)(gong)差(cha),即帶(dai)料(liao)(liao)(liao)的(de)(de)(de)(de)國際公(gong)(gong)(gong)(gong)差(cha)或(huo)冶(ye)金部部標(biao)(biao)公(gong)(gong)(gong)(gong)差(cha)。坯(pi)(pi)料(liao)(liao)(liao)的(de)(de)(de)(de)寬(kuan)度(du)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun),理論上等(deng)于制(zhi)(zhi)品(pin)截(jie)(jie)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)展(zhan)開(kai)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun),但(dan)必須考慮坯(pi)(pi)料(liao)(liao)(liao)橫向延伸率的(de)(de)(de)(de)影響,并在(zai)(zai)(zai)(zai)冷彎(wan)(wan)成形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)實踐(jian)(jian)過(guo)(guo)程(cheng)中最后(hou)(hou)修正(zheng)確(que)(que)定(ding)(ding)。坯(pi)(pi)料(liao)(liao)(liao)寬(kuan)度(du)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)的(de)(de)(de)(de)公(gong)(gong)(gong)(gong)差(cha),如制(zhi)(zhi)件截(jie)(jie)形(xing)(xing)(xing)(xing)(xing)無(wu)特殊(shu)的(de)(de)(de)(de)尺(chi)(chi)(chi)(chi)(chi)寸(cun)(cun)(cun)公(gong)(gong)(gong)(gong)差(cha)要(yao)求時(shi),也可取(qu)帶(dai)料(liao)(liao)(liao)寬(kuan)度(du)的(de)(de)(de)(de)標(biao)(biao)準公(gong)(gong)(gong)(gong)差(cha)。但(dan)冷彎(wan)(wan)成型過(guo)(guo)程(cheng)是(shi)一個十分復(fu)雜的(de)(de)(de)(de)過(guo)(guo)程(cheng),設(she)(she)(she)計(ji)(ji)生(sheng)產(chan)(chan)中仍有許多問(wen)題(ti)(ti)尚(shang)待解決(jue),這(zhe)些(xie)(xie)問(wen)題(ti)(ti)往往在(zai)(zai)(zai)(zai)調試生(sheng)產(chan)(chan)過(guo)(guo)程(cheng)中才能(neng)發現(xian)。以(yi)(yi)寬(kuan)幅斷(duan)面薄板(ban)成型為例,如果(guo)設(she)(she)(she)計(ji)(ji)不合理,在(zai)(zai)(zai)(zai)調試過(guo)(guo)程(cheng)中會出(chu)(chu)現(xian)邊浪、袋(dai)形(xing)(xing)(xing)(xing)(xing)波、縱(zong)向彎(wan)(wan)曲、角部皺褶、裂紋(wen)及(ji)扭曲等(deng)變形(xing)(xing)(xing)(xing)(xing)缺陷(xian)。出(chu)(chu)現(xian)問(wen)題(ti)(ti)后(hou)(hou)再重新設(she)(she)(she)計(ji)(ji)加工(gong)軋輥(gun)(gun),必然會造成人力物力等(deng)資源的(de)(de)(de)(de)極大浪費(fei)。如果(guo)能(neng)夠了(le)解這(zhe)些(xie)(xie)缺陷(xian)的(de)(de)(de)(de)產(chan)(chan)生(sheng)機理,在(zai)(zai)(zai)(zai)設(she)(she)(she)計(ji)(ji)過(guo)(guo)程(cheng)中盡量(liang)避(bi)免這(zhe)些(xie)(xie)缺陷(xian),或(huo)在(zai)(zai)(zai)(zai)缺陷(xian)出(chu)(chu)現(xian)后(hou)(hou)能(neng)夠在(zai)(zai)(zai)(zai)原來的(de)(de)(de)(de)基礎(chu)上對軋輥(gun)(gun)進(jin)行合理的(de)(de)(de)(de)改進(jin),從而減輕甚至(zhi)消(xiao)除這(zhe)些(xie)(xie)缺陷(xian),仍可達(da)到軋輥(gun)(gun)設(she)(she)(she)計(ji)(ji)預期(qi)的(de)(de)(de)(de)目標(biao)(biao)。

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