半自動沖擊試驗機
發布日期:2019-12-06 11:19 瀏覽次數:
JB-300B型半自動沖擊試驗機按照國家標準GB/T3808-2002《擺(bai)錘(chui)式沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)機(ji)》開發生產,按國標GB/T229-2007《金(jin)屬(shu)(shu)夏比缺口沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan)方法》對(dui)金(jin)屬(shu)(shu)材料進行(xing)沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)試(shi)(shi)(shi)驗(yan),最大沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)能(neng)量為300J,并附帶(dai)150J擺(bai)錘(chui)一(yi)個(ge),所用試(shi)(shi)(shi)樣斷面為8×10mm;試(shi)(shi)(shi)驗(yan)機(ji)具有較大的沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)能(neng)量,所以主(zhu)要供試(shi)(shi)(shi)驗(yan)沖(chong)(chong)(chong)(chong)擊(ji)(ji)(ji)韌性(xing)較大的黑色(se)金(jin)屬(shu)(shu),如鋼鐵(tie)及其(qi)合金(jin)。
本(ben)試(shi)(shi)驗機利用(yong)擺(bai)錘沖(chong)(chong)(chong)擊前(qian)位(wei)能(neng)(neng)與沖(chong)(chong)(chong)擊后所剩余(yu)位(wei)能(neng)(neng)只差在度盤上顯示出來(lai)的(de)(de)(de)(de)方式,得到試(shi)(shi)樣的(de)(de)(de)(de)吸(xi)收功(gong);操(cao)作上為半(ban)自動(dong)控制試(shi)(shi)驗機,操(cao)作簡便、工作效率(lv)高,在沖(chong)(chong)(chong)斷試(shi)(shi)樣后利用(yong)剩余(yu)能(neng)(neng)量(liang)即(ji)自動(dong)揚(yang)擺(bai),準備做(zuo)下次沖(chong)(chong)(chong)擊試(shi)(shi)驗,所以在連續做(zuo)沖(chong)(chong)(chong)擊試(shi)(shi)驗的(de)(de)(de)(de)試(shi)(shi)驗室(shi)和(he)大量(liang)做(zuo)沖(chong)(chong)(chong)擊試(shi)(shi)驗的(de)(de)(de)(de)冶金、機械(xie)制造(zao)廠等部(bu)門更(geng)能(neng)(neng)體(ti)現其優越性。
半自動沖擊試驗機主要參數
1.沖擊能量:300J、150J
2.度(du)盤刻度(du)范圍及分度(du)值(zhi)
能量(liang)范圍: 0—300J 0—150J
每小格(ge)分度值: 2J 1J
3.擺錘力(li)值(沖擊常(chang)數): 0—300J M=160.7695N.m
0—150J M=80.3848N.m
4.擺錘預揚角:150°
5.擺(bai)軸旋轉中心至沖擊點(dian)(試樣中心)距離:750mm
6.沖(chong)擊(ji)速度:5.2m/s
7.試(shi)樣(yang)支座跨距:40mm
8.鉗口圓(yuan)角:R(1—1.5)mm
9.沖(chong)擊刀刃圓角:R(2—2.5)mm
10.試樣規格:(10×10×55)mm
11.試驗機(ji)凈重:420kg
12.試驗(yan)機(ji)外形尺(chi)寸:(2200×600×1400)mm
13.電源(yuan):三相四線制50Hz、380V、250W(主(zhu)電機)
14.配備300J、150J沖頭各一個
15、安全(quan)防護系統(tong)一套
16. 工作條件:
1)室溫20°C±5°C范圍內;
2)相對濕度不大于85%;
3)周圍無腐蝕(shi)性介質的環境中;
4)安裝(zhuang)在(zai)厚(hou)度不小于200mm的混凝土地(di)基上(shang)或固定在(zai)大于1400Kg的基礎上(shang);
5)機(ji)座上安裝基準面的水平度調至0.2/1000內。