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萬能試驗機標準使用方法

FABUSHIJIAN:2018-03-27    DIANJICISHU:CI

將斷裂的試件的斷口緊對在一同,用游標卡尺量出斷口處的直徑,核算出頭積 ;按下式可核算出低碳鋼的截面縮短率,從毀壞后的低碳鋼試件上可以看到,遍地的剩余伸長不是平均散布的。離斷口愈近變形愈大,離斷口愈遠則變形愈小,因而測得的數值與斷口的部位有關。為了一致值的核算,規則以斷口在標距長度中心的 區段內為準,來測量的值,若斷口不在區段內時,需求采用斷口移中的辦法進行換算,其辦法如下:設兩標點到之間共刻有格,拉伸前各格之間間隔相等,在斷裂試件較長的右段上從臨近斷口的一個刻線起,向右取格,標志為,這就相當于把斷口擺在標距中心,再看點至點有幾多格,就由點向左取一樣的格數,標以記號,令透露表現到的長度,則的長度中包括的格數等于標距長度內的格數。當斷口十分接近試件兩頭,而與其頭部之間隔等于或小于直徑的兩倍時,萬能試驗機普通以為實行后果無效,需求重作實行。

JIANCEGUOCHENGZHONGYONGHUYEHUODUOHUOSHAODEHUIYOUYIXIEXIAOYIHUO,XIAMIANRANGWOMENYIKUAIQULEJIEYIXIA。

a) 試件的預備:萬能試驗機诺亚彩票登录1720 com在試件中段取標距或在標距兩頭用腳標規打上沖眼作為標記,用游標卡尺在試件標距局限內測量中心和兩頭三處直徑取最小值作為核算試件橫截面面積用。

b) SHIYANJIDEYUBEI:QISHOUDIAOCHAZILIAOSHIYANJIDEGENBENJIEGOUDAOLIHECAOZUOBANFA,JINXIUSHIYANJIDECAOZUOGUICHENG。YIJUDITANGANGDEQIANGDUJIXIAN JISHIJIANDEHENGJIEMIANJI,CHUBUGULIANGLASHENSHIJIANSUOXUZUIDAZAIHE,XUANZESHIYIDECELIDUPAN,BINGZHUANGBEIXIANGYINGDEBAICHUI,KAINIANTOUQI,JIANGCELIZHIZHENDIAODAO“LINGDIAN”,RANHOUDIAOZHENGSHIYANJIXIAJIATOUDIWEI,JIANGSHIJIANJIAZHUANGZAIJIATOUNEI。

诺亚彩票登录1720 com c) JINXINGSHIXING:SHIJIANJIAJINHOU,GEISHIJIANCHIHUANPINGJUNJIAZAI,YONGWANNENGSHIYANJISHANGZHUDONGHUATUANZHUANG,HUICHUWAILIHEBIANXINGDEGUANXIQUXIANDANGZAIHETIANJIADAODIANSHILASHENTUSHANGDUANSHIZHIXIANBIAOMINGCIJIEDUANNEIZAIHEYUSHIJIANDEBIANGOUCHENGBILIGUANXIJIQIHEHUKEDINGLVDEDANXINGBIANXINGJUXIAN。JINANRUIMAJIXIESHEBEIYOUXIANZERENGONGSIDANGZAIHETIANJIADAODIANSHI,CELIJIZHIZHENDOULIUBUDONGHUOHURANXIAJIANGDAO DIANRANHOUZAIXIAODEJUXIANNEIBAIDONGZHESHIBIANXINGTIANJIAHENKUAI,ZAIHETIANJIAHENMAN;ZHECHANMINGZILIAOFASHENGLEHUODONGYU DIANXIANGYINGDEYINGLIJIAOSHANGHUODONGJIXIANYUXIANGYINGDEYINGLIJIAOXIAJIANDONGJIXIAN,YINXIAJIANDONGJIXIANBINIBUBIAN,SUOYIZILIAODEHUODONGJIXIANPUTONGGUIZEANXIAJIANDONGJIXIANQUZHIYI DIANXIANGDUIYINGDEZAIHEZHI CHUYISHIJIANDEYUANSHIJIEMIANJI JIHUODEDITANGANGDEHUODONGJIXIAN,HUODONGJIEDUANHOU,SHIJIANYAOJIESHOUGENGDADEWAILI,CAIGANCHIXUFAZUOBIANXINGRUOYAOSHISUXINGBIANXINGJIADA,BIXUTIANJIAZAIHE,RUTUXINGZHONGDIANZHIDIANZHEYIDUANWEIQIANGHUAJIEDUAN。DANGZAIHEDAODAZUIDAZHIDIANSHISHIJIANDESUXINGBIANXINGJIZHONGZAIMOUYIJIEMIANCHUDEXIAODUANNEI,CIDUANFAZUOJIEMIANSUODUAN,JICHENGXIAN“JINGSUO”JINGXIANG。FENGBIJIXIE,QUXIALADUANDESHIJIANJIANGDUANLIEDESHIJIANJINDUIDAOYITONG,YONGYOUBIAOKACHICELIANGCHUDUANLIEHOUSHIJIANBIAOJUJIANDECHANGDU,ANXIASHIKEHESUANCHUDITANGANGDEYANCHANGLV。

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