橡膠拉力試驗機的工藝流程需要注意什么?
瀏覽: 時間:2018.03.28 來源:東莞市恒工設備有限公司
橡膠拉力試(shi)驗機(ji)是一種與杠桿結合的正弦擺式(shi)拉力試(shi)驗機(ji),度(du)盤(pan)刻度(du)等分,主要用(yong)于高分子材(cai)(cai)料,如橡膠、塑料及編織物等材(cai)(cai)料的拉伸試(shi)驗,裝上(shang)反向器,還(huan)可作壓縮試(shi)驗,按照GB/T 2611 —2007《試(shi)驗機(ji)通用(yong)技術要求(qiu)》、JB/T 9375—1999《機(ji)械式(shi)拉力試(shi)驗機(ji)技術 條(tiao)件》的要求(qiu)制造。
橡膠拉(la)力試(shi)(shi)驗機(ji)由試(shi)(shi)樣(yang)夾(jia)持機(ji)構(gou)、加荷機(ji)構(gou)、測(ce)力機(ji)構(gou)、緩沖器(qi)、伸長計量裝置(zhi),繪(hui)圖(tu)裝置(zhi),電控系(xi)及機(ji)架(jia)等(deng)部分組成,試(shi)(shi)樣(yang)夾(jia)持機(ji)構(gou),用(yong)快速升降下(xia)夾(jia)頭(tou),來調(diao)整夾(jia)頭(tou)間的距離,拉(la)伸試(shi)(shi)驗時,把(ba)試(shi)(shi)樣(yang)夾(jia)持在上、下(xia)夾(jia)頭(tou)的鉗口上。當啟動(dong)電機(ji),通過(guo)三角皮帶,下(xia)降臺(tai)使(shi)下(xia)夾(jia)頭(tou)下(xia)降,試(shi)(shi)樣(yang)受拉(la)力而(er)產生變(bian)形(xing),其(qi)拉(la)力通過(guo)上夾(jia)頭(tou),夾(jia)頭(tou)掛 桿(gan)、傳力杠(gang)桿(gan)、鋼(gang)帶吊(diao)掛及鋼(gang)帶作(zuo)用(yong)到擺輪上,使(shi)擺輪揚起一個相(xiang)應的角度。
橡膠拉(la)力試驗(yan)機裝在(zai)擺(bai)(bai)桿上(shang)的(de)(de)滾輪推動(dong),線輪架(jia)作直線移(yi)動(dong),線輪架(jia)則(ze)帶動(dong)固定(ding)在(zai)指(zhi)針軸(zhou)上(shang)的(de)(de)繞線輪回轉(zhuan),使(shi)指(zhi)針在(zai)度(du)盤(pan)上(shang)指(zhi)出應力值,試樣斷(duan)裂時,擺(bai)(bai)錘(chui)由于(yu)緩沖器(qi)的(de)(de)作用,而緩慢(man)平(ping)(ping)(ping)(ping)穩地(di)復位(wei)。橡膠拉(la)力試驗(yan)機度(du)盤(pan)上(shang)有(you)三圈刻度(du),由旋鈕5變換,使(shi)用不同(tong)度(du)盤(pan)時,掛相應的(de)(de)擺(bai)(bai)錘(chui),換夾頭時,用平(ping)(ping)(ping)(ping)衡(heng)砣使(shi)擺(bai)(bai)錘(chui)鉛垂。橡膠拉(la)力試驗(yan)機的(de)(de)傳力拉(la)桿兩(liang)端各(ge)有(you)一螺桿,平(ping)(ping)(ping)(ping)衡(heng)砣14及(ji)鎖(suo)緊螺母,當(dang)使(shi)用編織物(wu)夾頭時,把前端(近(jin)夾頭的(de)(de)一端)的(de)(de)平(ping)(ping)(ping)(ping)衡(heng)蛇(she)及(ji)鎖(suo)緊螺母取下,調(diao)整(zheng)后端的(de)(de)平(ping)(ping)(ping)(ping)衡(heng)砣及(ji)鎖(suo)緊螺母,使(shi)更(geng)換擺(bai)(bai)錘(chui)時負荷主動(dong)針都指(zhi)在(zai)同(tong)一刻線上(shang) (即擺(bai)(bai)錘(chui)鉛垂)。
當使(shi)(shi)(shi)用(yong)(yong)(yong)橡(xiang)(xiang)膠(jiao)(jiao)拉(la)力(li)試驗機橡(xiang)(xiang)膠(jiao)(jiao)夾頭(tou)時(shi)除(chu)調(diao)整(zheng)后端(duan)(duan)平(ping)衡(heng)(heng)(heng)砣(tuo)及(ji)鎖緊螺(luo)(luo)(luo)母(mu)外,還需(xu)要前(qian)(qian)端(duan)(duan)平(ping)衡(heng)(heng)(heng)砣(tuo)及(ji)鎖緊螺(luo)(luo)(luo)母(mu)使(shi)(shi)(shi)擺(bai)(bai)錘(chui)(chui)鉛(qian)垂,只在傳力(li)拉(la)桿(gan)前(qian)(qian)端(duan)(duan)有(you)螺(luo)(luo)(luo)桿(gan)、平(ping)衡(heng)(heng)(heng)砣(tuo)及(ji)鎖緊螺(luo)(luo)(luo)母(mu),當使(shi)(shi)(shi)用(yong)(yong)(yong)編(bian)織物夾頭(tou)時(shi),調(diao)整(zheng)此平(ping)衡(heng)(heng)(heng)砣(tuo)及(ji)鎖緊螺(luo)(luo)(luo)母(mu)使(shi)(shi)(shi)擺(bai)(bai)錘(chui)(chui)鉛(qian)垂,當使(shi)(shi)(shi)用(yong)(yong)(yong)橡(xiang)(xiang)膠(jiao)(jiao)夾頭(tou)時(shi),必須(xu)在螺(luo)(luo)(luo)桿(gan)上(shang)再裝另(ling)一平(ping)衡(heng)(heng)(heng)蛇及(ji)鎖緊螺(luo)(luo)(luo)母(mu)來調(diao)整(zheng)擺(bai)(bai)錘(chui)(chui)鉛(qian)垂。橡(xiang)(xiang)膠(jiao)(jiao)拉(la)力(li)試驗機只在前(qian)(qian)端(duan)(duan)有(you)螺(luo)(luo)(luo)桿(gan),平(ping)衡(heng)(heng)(heng)蛇及(ji)鎖緊螺(luo)(luo)(luo)母(mu)、使(shi)(shi)(shi)用(yong)(yong)(yong)不同夾頭(tou),都只調(diao)整(zheng)這一平(ping)衡(heng)(heng)(heng)砣(tuo)就可以使(shi)(shi)(shi)擺(bai)(bai)錘(chui)(chui)鉛(qian)垂。
橡膠(jiao)拉(la)力試(shi)(shi)驗(yan)機(ji)(ji)線(xian)輪架裝有(you)一調零(ling)螺母,用以調整主動(dong)(dong)針對(dui)準零(ling)位,試(shi)(shi)驗(yan)時由于擺錘的揚起,導致繪圖筆橫向(xiang)移動(dong)(dong)在(zai)記(ji)錄(lu)(lu)紙(zhi)(zhi)的橫坐(zuo)標(biao)上顯(xian)示出(chu)(chu)力值,下(xia)夾頭的移動(dong)(dong)則通過繞在(zai)槽輪22內的小繩帶動(dong)(dong)繪圖筒(tong)旋轉,橡膠(jiao)拉(la)力試(shi)(shi)驗(yan)機(ji)(ji)在(zai)記(ji)錄(lu)(lu)紙(zhi)(zhi)縱坐(zuo)標(biao)上顯(xian)示出(chu)(chu)試(shi)(shi)樣的近(jin)似伸(shen)長量,這樣繪圖筆便在(zai)記(ji)錄(lu)(lu)紙(zhi)(zhi)上繪制出(chu)(chu)“負荷(he)一變形”曲線(xian)。
選擇拉力(li)試驗(yan)機(ji)夾(jia)具需要注意什么(me)?
我們(men)都知道使用(yong)拉力(li)試(shi)驗(yan)機時,拉力(li)試(shi)驗(yan)機夾(jia)具(ju)(ju)是不(bu)可(ke)以(yi)缺少的一個零(ling)件。它的種(zhong)類(lei)是多種(zhong)多樣(yang)的,夾(jia)具(ju)(ju)根據(ju)試(shi)驗(yan)方法(fa)不(bu)同,大(da)致可(ke)分(fen)為(wei):拉伸類(lei)夾(jia)具(ju)(ju)、壓(ya)縮類(lei)夾(jia)具(ju)(ju)、彎(wan)曲類(lei)夾(jia)具(ju)(ju)、剝離類(lei)夾(jia)具(ju)(ju)、剪切類(lei)夾(jia)具(ju)(ju)等,其中拉伸類(lei)夾(jia)具(ju)(ju)約占夾(jia)具(ju)(ju)大(da)部分(fen)。
我們在選擇(ze)夾具時(shi),需要注意一(yi)下夾具的(de)材(cai)料,材(cai)料要求必須符合以下標準:
①對一般的金屬(shu)及非金屬(shu)試樣(yang),夾具的鉗(qian)口(kou)直接與試樣(yang)接觸(chu),一般都選用優(you)質(zhi)合金結構(gou)鋼,合金高(gao)碳鋼(或(huo)低碳合金鋼)、冷(leng)作(zuo)模(mo)具鋼等,通(tong)過適當的熱處(chu)理工藝(淬(cui)回火、滲碳淬(cui)火等)增加其強(qiang)度、耐磨性,有時也在(zai)鉗(qian)口(kou)處(chu)鑲裝特種鋼材,或(huo)在(zai)鉗(qian)口(kou)表面噴涂金鋼砂等。
②對(dui)一些小試(shi)(shi)驗(yan)力的(de)夾(jia)(jia)具(ju)(ju),與試(shi)(shi)樣接(jie)觸的(de)表面采用粘軟質膠皮(pi)等(例如:塑料薄膜(mo)、纖維(wei)絲(si)等試(shi)(shi)樣的(de)夾(jia)(jia)具(ju)(ju)夾(jia)(jia)持面)。
③ 夾具體一般采(cai)用(yong)(yong)優質(zhi)中(zhong)碳鋼、合金結構(gou)鋼,通過適當的(de)熱(re)處(chu)理工藝增加其(qi)力學(xue)性能。有(you)時為了(le)減輕重(zhong)量也采(cai)用(yong)(yong)鋁合金等有(you)色金屬(shu)及(ji)特種(zhong)金屬(shu)。有(you)時也采(cai)用(yong)(yong)鑄(zhu)造結構(gou)(鑄(zhu)鋼,鑄(zhu)鋁等)。
東(dong)莞恒(heng)(heng)(heng)工(gong)設備是從事恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕試(shi)驗(yan)箱(xiang)(xiang)(xiang),步入式環境試(shi)驗(yan)室,快速溫(wen)(wen)(wen)變試(shi)驗(yan)箱(xiang)(xiang)(xiang),冷熱(re)沖(chong)擊試(shi)驗(yan)箱(xiang)(xiang)(xiang),高(gao)低(di)溫(wen)(wen)(wen)低(di)氣(qi)壓(ya)試(shi)驗(yan)箱(xiang)(xiang)(xiang),UV光照氣(qi)候(hou)試(shi)驗(yan)箱(xiang)(xiang)(xiang),電池(chi)熱(re)沖(chong)擊試(shi)驗(yan)箱(xiang)(xiang)(xiang),高(gao)溫(wen)(wen)(wen)時效爐等設備研(yan)發和生產廠家之一,恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕試(shi)驗(yan)箱(xiang)(xiang)(xiang),恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕箱(xiang)(xiang)(xiang),高(gao)低(di)溫(wen)(wen)(wen)箱(xiang)(xiang)(xiang),冷熱(re)沖(chong)擊試(shi)驗(yan)箱(xiang)(xiang)(xiang),高(gao)低(di)溫(wen)(wen)(wen)沖(chong)擊試(shi)驗(yan)箱(xiang)(xiang)(xiang)具有行業領先地位,累積(ji)豐富行業經驗(yan),具產品開發能(neng)力,獲(huo)多項國家專(zhuan)利,業務聯系(xi):潘先生