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20CRMNTI合金圓鋼-合金結(jié)構(gòu)鋼
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.block-item .block-title{color:#333;font-size:20px;line-height:1.5}.page-footer-content .block-item .block-title svg{color:#aaa;margin-right:10px}.page-footer-content .block-item .block-content{padding:5px 0 0 30px;width:210px}.page-footer-content .block-item .block-content>a{color:#666;cursor:pointer;float:left;margin-bottom:5px;position:relative;-webkit-text-decoration:none;text-decoration:none;width:90px}.page-footer-content .block-item .block-content>a:hover{color:#338de6;-webkit-text-decoration:none;text-decoration:none}.page-footer-content .block-item .block-content .block-content-new-icon{height:7px;left:52px;position:absolute;top:3px}網(wǎng)頁新聞貼吧知道網(wǎng)盤圖片視頻地圖文庫資訊采購百科百度首頁登錄注冊進(jìn)入詞條全站搜索幫助首頁秒懂百科特色百科知識專題加入百科百科團(tuán)隊(duì)權(quán)威合作個(gè)人中心20CrMnTi播報(bào)討論上傳視頻滲碳鋼收藏查看我的收藏0有用+1020CrMnTi是滲碳鋼，滲碳鋼通常為含碳量為0.17%-0.24%的低碳鋼。汽車上多用其制造傳動(dòng)齒輪，是中淬透性滲碳鋼中Cr Mn Ti 鋼，其淬透性較高，在保證淬透情況下，特別是具有較高的低溫沖擊韌性。20CrMnTi表面滲碳硬化處理用鋼。良好的加工性，加工變形微小，抗疲勞性能相當(dāng)好。主要用途有：用于軸類，活塞類零配件以及汽車，飛機(jī)各種特殊零件部位。中文名20CrMnTi別 名20CrMnTi無縫鋼管執(zhí)行標(biāo)準(zhǔn)GB/T 3077-2015特 性具有較高的強(qiáng)度和韌性用 途齒輪，軸類目錄1簡要介紹2化學(xué)成分3力學(xué)性能4鋼廠規(guī)格5熱處理規(guī)范6表示方法簡要介紹播報(bào)編輯●特性及適用范圍：是性能良好的滲碳鋼，淬透性較高，經(jīng)滲碳淬火后具有硬而耐磨的表面與堅(jiān)韌的心部，具有較高的低溫沖擊韌性，焊接性中等，正火后可切削性良好。用于制造截面小于30mm的承受高速、中等或重載荷、沖擊及摩擦的重要零件，如齒輪、齒圈、齒輪軸、十字頭等。是18CrMnTi的代用鋼，廣泛用作滲碳零件，在汽車.拖拉機(jī)工業(yè)用于截面在30mm以下，承受高速.中或重負(fù)荷以及受沖擊.摩擦的重要滲碳零件，如齒輪、軸、齒圈、齒輪軸、滑動(dòng)軸承的主軸、十字頭、爪形離合器、蝸桿等。化學(xué)成分播報(bào)編輯●化學(xué)成份碳C：0.17～0.2320CrMnTi硅Si：0.17～0.37錳Mn：0.80～1.10鉻Cr：1.00～1.30硫S： 優(yōu)質(zhì)鋼不大于0.030高級優(yōu)質(zhì)鋼不大于0.020特級優(yōu)質(zhì)鋼不大于0.010磷P： 優(yōu)質(zhì)鋼不大于0.030高級優(yōu)質(zhì)鋼不大于0.020特級優(yōu)質(zhì)鋼不大于0.020鎳Ni：優(yōu)質(zhì)鋼不大于0.30高級優(yōu)質(zhì)鋼不大于0.30特級優(yōu)質(zhì)鋼不大于0.30銅Cu（注1）：優(yōu)質(zhì)鋼不大于0.30高級優(yōu)質(zhì)鋼不大于0.25特級優(yōu)質(zhì)鋼不大于0.25鈦Ti：0.04～0.10注1：熱壓力加工用鋼的銅含量不大于0.2%力學(xué)性能播報(bào)編輯20CrMnTi●力學(xué)性能：抗拉強(qiáng)度σb (MPa)：≥1080(110)屈服強(qiáng)度σs (MPa)：≥835(85)伸長率δ5 (%)：≥10齒輪鋼成品圖斷面收縮率ψ (%)：≥45沖擊功Akv (J)：≥55沖擊韌性值αkv (J/cm2)：≥69(7)硬度：≤217HB試樣尺寸：試樣毛坯尺寸為15mm●20CrMnTi密度:7.8×103kg/m3彈性模量:207GPa泊松比:0.25導(dǎo)熱率:1.26×10-5（1/℃）鋼廠規(guī)格播報(bào)編輯冷拉光圓Ф3.0-100重特20CrMnTi熱軋圓鋼Ф100-200重特20CrMnTi熱軋圓鋼Ф20-100重特20CrMnTi熱軋圓鋼Ф200-400重特20CrMnTi熱處理規(guī)范播報(bào)編輯●熱處理規(guī)范及金相組織：熱處理規(guī)范：淬火:第一次880℃,第二次870℃,油冷;回火200℃,水冷、空冷。詳細(xì)的熱處理規(guī)范與力學(xué)性能:20CrMnTi圓鋼試樣毛坯尺寸/mm: 15熱處理|淬火|加熱溫度/℃|第一次淬火: 880熱處理|淬火|加熱溫度/℃|第二次淬火: 870熱處理|淬火|冷卻劑: 油熱處理|回火|加熱溫度/℃: 200熱處理|回火|冷卻劑: 水、空力學(xué)性能|抗拉強(qiáng)度σb/MPa|≥: 1080力學(xué)性能|屈服點(diǎn)σs/MPa|≥: 850力學(xué)性能|伸長率δ5(%)|≥: 10力學(xué)性能|面縮率ψ(%)|≥: 45力學(xué)性能|沖擊吸收功AKV/J|≥: 55交貨狀態(tài)硬度HBS|≥: 217●熱處理規(guī)范及金相組織：熱處理規(guī)范：淬火:第一次880℃,第二次870℃,油冷;回火200℃,水冷、空冷；金相組織：回火馬氏體?！窠回洜顟B(tài)：以熱處理（正火、退火或高溫回火）或不熱處理狀態(tài)交貨，交貨狀態(tài)應(yīng)在合同中注明?！?0CrMnTi的密度及彈性模量：密度:7.8×103kg/m3彈性模量:207GPa泊松比:0.25導(dǎo)熱率:1.26×10-51/℃●20CrMnTi正火20CrMnTi正火，20CrMnTi鋼材在加熱860℃保溫速冷到680℃保溫后空冷的等溫正火工藝與加熱 960℃保溫后霧冷的高溫正火工藝，兩種工藝相對比不同之處及作用。表示方法播報(bào)編輯① 鋼號開頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬分之幾表示，如40Cr、25Cr2MoVA合金管。②鋼中主要合金元素，除個(gè)別微合金元素外，一般以百分之幾表示。當(dāng)平均合金含量小于1.5%時(shí)，鋼號中一般只標(biāo)出元素符號，而不標(biāo)明含量，但在特殊情況下易致混淆者，在元素符號后亦可標(biāo)以數(shù)字"1"，例如鋼號"12CrMoV"和"12Cr1MoV"，前者鉻含量為0.4-0.6%，后者為0.9-1.2%，其余成分全部相同。當(dāng)合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時(shí)，在元素符號后面應(yīng)標(biāo)明含量，可相應(yīng)表示為2、3、4……等。例如18Cr2Ni4WA。③鋼中的釩V、鈦Ti、鋁AL、硼B(yǎng)、稀土RE等合金元素，均屬微合金元素，雖然含量很低，仍應(yīng)在鋼號中標(biāo)出。例如20MnVB鋼中。釩為0.07-0.12%，硼為0.001-0.005%。④高級優(yōu)質(zhì)鋼應(yīng)在鋼號最后加"A"，以區(qū)別于一般優(yōu)質(zhì)鋼。⑤專門用途的合金結(jié)構(gòu)鋼，鋼號冠以（或后綴）代表該鋼種用途的符號。例如鉚螺專用的30CrMnSi鋼，鋼號表示為ML30CrMnSi。合金管與無縫管兩者既有關(guān)系又有區(qū)別，不能混為一談。合金管是鋼管按照生產(chǎn)用料（也就是材質(zhì)）來定義的，顧名思義就是合金做的管子；而無縫管是鋼管按照生產(chǎn)工藝（有縫無縫）來定義的，區(qū)別于無縫管的就是有縫管，包括直縫焊管和螺旋管。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(bào)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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鋼，其淬透性較高，在..."}window.__abbaidu_2020_subidgetf||(window.__abbaidu_2020_subidgetf=function(){return"01000000"}) 20CrMnTi是滲碳鋼，滲碳鋼通常為含碳量為0.17%-0.24%的低碳鋼。汽車上多用其制造傳動(dòng)齒輪，是中淬透性滲碳鋼中Cr Mn Ti 鋼，其淬透性較高，在保證淬透情況下，特別是具有較高的低溫沖擊韌性。20CrMnTi表面滲碳硬化處理用鋼。良好的加工性，加工變形微小，抗疲勞性能相當(dāng)好。主要用途有:用于軸類，活塞類零配件以及汽車，飛機(jī)各種特殊零件部位?；拘畔⒅形拿Q20CrMnTi執(zhí)行標(biāo)準(zhǔn)GB/T 3077-2015特性具有較高的強(qiáng)度和韌性用途齒輪，軸類目錄1簡要介紹2化學(xué)成分3力學(xué)性能4鋼廠規(guī)格5熱處理規(guī)范6表示方法折疊編輯本段簡要介紹●特性及適用范圍:是性能良好的滲碳鋼，淬透性較高，經(jīng)滲碳淬火后具有硬而耐磨的表面與堅(jiān)韌的心部，具有較高的低溫沖擊韌性，焊接性中等，正火后可切削性良好。用于制造截面<30mm的承受高速、中等或重載荷、沖擊及摩擦的重要零件，如齒輪、齒圈、齒輪軸十字頭等。是18CrMnTi的代用鋼，廣泛用作滲碳零件，在汽車.拖拉機(jī)工業(yè)用于截面在30mm以下，承受高速.中或重負(fù)荷以及受沖擊.摩擦的重要滲碳零件，如齒輪.軸.齒圈.齒輪軸.滑動(dòng)軸承的主軸.十字頭.爪形離合器.蝸桿等。折疊編輯本段化學(xué)成分●化學(xué)成份碳C:0.17~0.23硅Si:0.17~0.3720CrMnTi20CrMnTi錳Mn:0.80~1.10鉻Cr:1.00~1.30硫S:允許殘余含量≤0.035磷P:允許殘余含量≤0.035鎳Ni:允許殘余含量≤0.030銅Cu:允許殘余含量≤0.030鈦Ti:0.04~0.10[1]折疊編輯本段力學(xué)性能●力學(xué)性能:20CrMnTi20CrMnTi抗拉強(qiáng)度σb (MPa):≥1080(110)屈服強(qiáng)度σs (MPa):≥835(85)伸長率δ5 (%):≥10斷面收縮率ψ (%):≥45齒輪鋼成品圖齒輪鋼成品圖沖擊功Akv (J):≥55沖擊韌性值αkv (J/cm2):≥69(7)硬度:≤217HB試樣尺寸:試樣毛坯尺寸為15mm●20CrMnTi密度:7.8×10kg/m3彈性模量:207GPa泊松比:0.25導(dǎo)熱率:1.26×10-5(1/℃)
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