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16MNG特種鋼板-鍋爐板/容器板系列
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[1-2]。作為鍋爐板專用鋼種，其工作溫度上限為450℃，通過微合金化處理可替代20g鋼實(shí)現(xiàn)20%-30%的減重效果。隨著標(biāo)準(zhǔn)更新，該材質(zhì)已并入Q345R牌號體系，仍保留鍋爐壓力容器領(lǐng)域的特殊技術(shù)要求。執(zhí)行標(biāo)準(zhǔn)GB713（2008年更新）強(qiáng)度等級343MPa屈服強(qiáng)度應(yīng)用溫度≤450℃焊接性能良好（需預(yù)熱） [1]替代材料20g鋼板材質(zhì)類別普通低合金鋼目錄1材質(zhì)特性2生產(chǎn)工藝3應(yīng)用領(lǐng)域4標(biāo)準(zhǔn)演變5質(zhì)量檢測材質(zhì)特性播報編輯含碳量0.12%-0.20%，錳含量1.20%-1.60%構(gòu)成基礎(chǔ)合金體系，硅、釩元素的添加提升抗蠕變性能 [1-2]。在厚度4-60mm規(guī)格范圍內(nèi)，抗拉強(qiáng)度達(dá)到490-665MPa，延伸率≥19%（厚度≤16mm時）。低溫沖擊功在0℃環(huán)境下≥34J，缺口敏感性較普通結(jié)構(gòu)鋼高約12%。物理特性表現(xiàn)為熱膨脹系數(shù)11.7×10??/℃（20-300℃），導(dǎo)熱率49.8W/(m·K)，彈性模量206GPa [2]。熱加工溫度區(qū)間為850-1200℃，終軋溫度需控制在800℃以上以保證晶粒細(xì)化。生產(chǎn)工藝播報編輯采用轉(zhuǎn)爐或電爐冶煉，經(jīng)熱機(jī)械軋制形成12-300mm厚度板材 [2]。正火處理溫度890-920℃，保溫時間按板厚每毫米1.2分鐘計(jì)算，后續(xù)需進(jìn)行100%超聲波探傷檢測。對于厚度超過40mm的板材，需在焊接前預(yù)熱至100-150℃，焊后需進(jìn)行600 650℃回火消除應(yīng)力。焊接材料選用標(biāo)準(zhǔn)：手工電弧焊：E5015（J507）或E5016（J506）焊條 [1]埋弧焊：H08MnA焊絲配HJ431焊劑 [2]氣體保護(hù)焊：ER50-6焊絲配80%Ar+20%CO?混合氣體 [2]應(yīng)用領(lǐng)域播報編輯主要應(yīng)用于工作溫度≤450℃的低中壓鍋爐汽包制造，占鍋爐鋼板用量的35%-40%。典型應(yīng)用場景包括：電站鍋爐汽包筒體（壁厚16-100mm）壓力容器殼體（設(shè)計(jì)溫度-20-450℃）鋼板（介質(zhì)腐蝕性≤Ⅱ類） [1-2]在建筑領(lǐng)域用于大跨度鋼結(jié)構(gòu)節(jié)點(diǎn)板，承受動載荷部位需進(jìn)行0℃沖擊試驗(yàn) [2]。2020年起逐步被Q345R替代后，仍用于存量設(shè)備維修和特定工況容器制造。標(biāo)準(zhǔn)演變播報編輯按GB713標(biāo)準(zhǔn)演變歷程：1.1979版：首次確立為鍋爐專用鋼板2.1997版：Mn含量上限調(diào)整為1.70%3.2008版：與19Mng合并為Q345R4.2014版：沖擊試驗(yàn)溫度統(tǒng)一為0℃現(xiàn)行標(biāo)準(zhǔn)要求鋼板逐張進(jìn)行彎曲試驗(yàn)，彎曲直徑按3倍板厚設(shè)定，彎曲角度180°無裂紋。對于厚度≥12mm的鋼板，需增加Z向性能測試，斷面收縮率≥35%。質(zhì)量檢測播報編輯化學(xué)成分允許偏差：C：±0.02%Mn：±0.10%Si：±0.05%S/P：≤0.025%力學(xué)性能檢測包含：橫向拉伸試驗(yàn)（標(biāo)距50mm）夏比V型缺口沖擊試驗(yàn)（3試樣平均值）布氏硬度檢測（HBW10/3000）晶粒度評定（≥7級） [2]根據(jù)GB/T2975標(biāo)準(zhǔn)，取樣位置距鋼板邊緣≥50mm，試樣軸線與軋制方向呈90°夾角 [2]。厚度＞30mm時需在1/4厚度處取樣，沖擊試樣缺口軸線垂直于軋制面。的圖片(1張)新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= 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16MNG屬鋼材中的一種材質(zhì)。鍋爐用鋼板(鍋爐板系列)。g為鍋爐板中的“鍋”的第一個字母。執(zhí)行標(biāo)準(zhǔn)為：GB713-199720g 主體材料其實(shí)就是20#，16Mng 主體材料其實(shí)就是16Mn?！癵”表示鍋爐用鋼，他們里面就是加入了少量的合金元素，來改善鋼的性能的。與普通的20#、16Mn相比具有抗沖擊性能好、溫度形變小耐腐蝕性好、微合金化等特點(diǎn)鍋爐用鋼板主要牌號：20g、SA285GrC、SB410、SB480、16Mng、410B、KP42、P355GH、HII、P265GH、16Mo3、15Mo3、19Mn6、SA299、BHW35、DIWA353、13MnNiMo54、臨氫SA387Gr11GL2/GL1、SA387Gr22GL2國內(nèi)材料可參考GB713-97的標(biāo)準(zhǔn)。(最新標(biāo)準(zhǔn)：GB/T 713-2008)化學(xué)成分化學(xué)成分如下： C：≤0.2%，Mn：1.2%-1.35% ，Si：0.2%-0.6% ，P：≤0.015% ，S：≤0.004% ，Ca：0.0015%-0.003% ，O2：≤0.0025% ，CE：≤0.43%做抗氫誘導(dǎo)裂紋(HIC)試驗(yàn)：采用A溶液(初期PH值≤3.3)要求： CLR≤5% ，CTR≤1.5% ，CSR≤0.5% 。
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