1、什么是冷軋鋼板

       冷軋是以熱軋板卷為原(yuan)料,在常(chang)溫(wen)(wen)下(xia)在再(zai)結晶溫(wen)(wen)度以(yi)下(xia)進(jin)(jin)行軋(ya)(ya)制(zhi)而成(cheng),冷(leng)(leng)(leng)(leng)軋(ya)(ya)鋼(gang)(gang)(gang)板(ban)(ban)(ban)就是經(jing)過冷(leng)(leng)(leng)(leng)軋(ya)(ya)工序生產的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban),簡稱冷(leng)(leng)(leng)(leng)板(ban)(ban)(ban)。冷(leng)(leng)(leng)(leng)軋(ya)(ya)是在室溫(wen)(wen)條件下(xia)在再(zai)結晶溫(wen)(wen)度以(yi)下(xia)將(jiang)鋼(gang)(gang)(gang)板(ban)(ban)(ban)進(jin)(jin)一(yi)步(bu)軋(ya)(ya)薄(bo)(bo)至為目(mu)標厚度的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。和熱(re)(re)(re)(re)軋(ya)(ya)鋼(gang)(gang)(gang)板(ban)(ban)(ban)比(bi)較，冷(leng)(leng)(leng)(leng)軋(ya)(ya)鋼(gang)(gang)(gang)板(ban)(ban)(ban)厚度更加精確(que)，而且表(biao)面光滑、漂(piao)亮。冷(leng)(leng)(leng)(leng)軋(ya)(ya)板(ban)(ban)(ban)帶用途很(hen)廣，如汽車(che)制(zhi)造(zao)、電(dian)(dian)氣產品、機(ji)車(che)車(che)輛(liang)、航空、精密儀(yi)表(biao)、食品罐頭(tou)等。冷(leng)(leng)(leng)(leng)軋(ya)(ya)薄(bo)(bo)鋼(gang)(gang)(gang)板(ban)(ban)(ban)是普(pu)通碳素結構鋼(gang)(gang)(gang)冷(leng)(leng)(leng)(leng)軋(ya)(ya)板(ban)(ban)(ban)的(de)簡稱，也稱冷(leng)(leng)(leng)(leng)軋(ya)(ya)板(ban)(ban)(ban)，俗稱冷(leng)(leng)(leng)(leng)板(ban)(ban)(ban)，有時(shi)會被誤寫成(cheng)冷(leng)(leng)(leng)(leng)扎板(ban)(ban)(ban)。冷(leng)(leng)(leng)(leng)板(ban)(ban)(ban)是由(you)(you)普(pu)通碳素結構鋼(gang)(gang)(gang)熱(re)(re)(re)(re)軋(ya)(ya)鋼(gang)(gang)(gang)帶，經(jing)過進(jin)(jin)一(yi)步(bu)冷(leng)(leng)(leng)(leng)軋(ya)(ya)制(zhi)成(cheng)厚度小于4mm的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。由(you)(you)于在常(chang)溫(wen)(wen)下(xia)軋(ya)(ya)制(zhi)，不產生氧(yang)化鐵皮(pi)，因此(ci)，冷(leng)(leng)(leng)(leng)板(ban)(ban)(ban)表(biao)面質量好(hao)，尺寸精度高(gao)，再(zai)加之退火(huo)處理，其(qi)機(ji)械性能和工藝性能都優于熱(re)(re)(re)(re)軋(ya)(ya)薄(bo)(bo)鋼(gang)(gang)(gang)板(ban)(ban)(ban)，在許多領(ling)域(yu)里，特別(bie)是家電(dian)(dian)制(zhi)造(zao)領(ling)域(yu)，已逐漸(jian)用它(ta)取代熱(re)(re)(re)(re)軋(ya)(ya)薄(bo)(bo)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。

2、大冷軋鋼板的拉伸試驗標準

試驗方案：大冷軋鋼板的拉伸試驗
試(shi)驗設備(bei)：萬能拉力試(shi)驗機

送檢單位：某生產大冷軋鋼板的企業
原始標距(ju)L0：100 mm
計算標準：GB 228.1-2010
引(yin)伸計(ji)標距：50 mm
試驗時(shi)間：665.766724 s
試驗速度：5 mm/min
試驗夾具：3T旋轉(zhuan)楔形拉伸
引伸計型號(hao)：YYU/25-50
寬度：20.12 mm
厚度：1.18 mm

3、拉伸試驗測試參數

抗拉強(qiang)度（Rm)、斷裂伸長率（At）

4、測試數據