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.index-module_wrapperBg__OKK1h{background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_bg_new.png);background-position:top;background-repeat:no-repeat;background-size:cover;height:871px;left:0;position:absolute;top:0;width:100%}.index-module_drawerHand__aRhcO{align-items:center;background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_hand_bg.png);background-position:50%;background-repeat:no-repeat;background-size:contain;cursor:pointer;display:flex;height:72px;justify-content:center;position:fixed;right:0;top:50%;transform:translateY(-36px);transition:all .2s ease-in;width:20px}.index-module_drawerHand__aRhcO .index-module_taskLogo__71Tj5{height:66px;position:absolute;right:30px;top:0;width:66px}.index-module_drawerHand__aRhcO.index-module_open__qMl5O{right:480px}.index-module_reverse__OKr6k{transform:rotate(180deg)}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隊權威合作個人中心收藏查看我的收藏0有用+10GCr15SiMn播報討論上傳視頻滾動軸承鋼軸承鋼全名叫滾動軸承鋼，具有高的抗壓強度與疲勞極限，高硬度，高耐磨性及一定韌性，淬透性好，對硫和磷控制極嚴，是一種高級優(yōu)質(zhì)鋼，可做冷作模具鋼。比重：7.81。外文名GCr15SiMn標 準YB 9-1968硬度HRC58~~64目錄1產(chǎn)品介紹2鍛造工藝?軸承鋼鍛造溫度?鍛后熱處理?淬火及淬火介質(zhì)?回火溫度3特性4參考對應牌號5化學成分6力學性能7熱處理規(guī)范?臨界點溫度?普通球化退火?等溫球化退火?重復球化退火?淬、回火處理8典型應用舉例產(chǎn)品介紹播報編輯GCr15SiMn軸承鋼耐磨性和淬透性比GCr15更高，冷加工塑性變形中等，焊接性差，對白點形成敏感，熱處理時有回火脆性。 用于制造壁厚＞12mm.外徑≥250mm的套圈；直徑50.8-203.2的鋼球，直徑＞22mm的滾子；此外也可作要求高硬度高耐磨性的其他機械零件，如軋輥.螺旋量規(guī)等GCr15SiMn鋼是高碳、高鉻軸承用鋼,比GCr15鋼有更高的耐磨性和淬透性.在油中的臨界淬火直徑為90~110mm (體積分數(shù)為50%馬氏體),經(jīng)840°C油冷淬火后,350°C回火狀態(tài),再進行光淬火,表面硬度高達1096HV,淬硬層深度可達1mm。針對成形滾輪熱處理工藝的不足,采用薄邊處預冷降溫發(fā)生非馬氏體轉(zhuǎn)變,產(chǎn)生托氏體或索氏體，增強韌性、減小應力、再整體淬火達到工藝要求。進行冰冷處理,可提高軸承的尺寸穩(wěn)定性,或進行馬氏體分級淬火,以穩(wěn)定殘留奧氏體,獲得高的尺寸穩(wěn)定性和較高的韌性。該鋼一般不建議進行鍛造。一般淬火和低溫回火后使用。 [1]標號/牌號：中國GB/JB標號: GCr15SiMn德國DIN鋼號標號: 100CrMn6德國DIN材料標號: 1．3520鍛造工藝播報編輯軸承鋼鍛造溫度(1)始鍛溫度：1150(1120)終緞溫度：850(800)度。(2)鍛造前清除表面缺陷，盡量預熱后在快速加熱。(3)溫加工時，應避免200~400度的藍脆區(qū)。熱加工時，應避免進入高溫脆區(qū)(大于1250)。應盡量避免進入熱脆區(qū)(800~~950度)。鍛后熱處理(1)鍛后————預先熱處理(球化退火)————最終熱處理(淬火+低溫回火)(2)球化退火目的：降低硬度，便于加工，為淬火做準備。球化退火過程：加熱到750~~770度，保溫一定時間，在緩慢冷卻到600度以下空冷。(3)各種軸承鋼淬火+低溫回火及硬度表鋼號 淬火溫度及淬火介質(zhì) 低溫回火 硬度HRCGCr15SiMn 800~840 油 150~170 62~64淬火及淬火介質(zhì)(1)淬火顏色(經(jīng)驗) 白色最硬而脆，黃色硬而韌，蘭色軟而韌。(2) 淬火介質(zhì)A 水：一般溫度不超過40度，不得有油，肥皂等雜質(zhì)。B 鹽及堿的水溶液：水中加百分之5~10的鹽或堿。GCr15SiMn鹽溶液冷卻速度是水的十倍，硬度高而均勻，但組織應力大，有一定的銹蝕作用。溫度小于60度。堿溶液(苛性納水溶液)腐蝕性大，適應范圍小。C 油：包括機油，錠子油，變壓器油，柴油等?？蓽p小變形與開裂。不適用碳鋼。油溫度：在60~~80度，最高不超過100~120度。回火溫度軸承鋼采用低溫回火。溫度：150~250度?？稍诒３指哂捕群透吣湍バ缘那疤嵯?，降低內(nèi)應力和脆性，以免使用時崩裂或過早損壞。特性播報編輯●特性及適用范圍：是在 GCr15鋼基礎上，適當提高Si、Mn含量以改善其淬透性和彈性極限，耐磨性也比 GCr15好。制造滾動體的適用尺寸范圍比 GCr15大，主要用于制造壁厚＞12mm，外徑＞280mm 的軸承套圈鋼球直徑＞50mm；圓錐、圓柱和球面滾子直徑＞22mm和所有尺寸的滾針。參考對應牌號播報編輯中國GB/YB標準牌號GCr15SiMn、德國DIN標準牌號100CrMn6、德國DIN標準材料編號1. 3520、俄羅斯ΓOCT標準牌號ⅢX15CΓ。 [2]化學成分播報編輯碳 C ：0.95～1.05硅 Si：0.40～0.65錳 Mn：0.90～1.20硫 S ：≤0.020磷 P ：≤0.027鉻 Cr：1.30～1.65鎳 Ni：≤0.30銅 Cu：≤0.25力學性能播報編輯抗拉強度 σb (MPa)：1831沖擊功 Akv (J)：23硬度 ：65HRC試樣尺寸：某試樣●熱處理規(guī)范及金相組織：熱處理規(guī)范：830～840℃淬火，油冷;160℃回火3h。金相組織：回火馬氏體。gcr15simn表示方法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，除個別微合金元素外，一般以百分之幾表示。當平均合金含量＜1.5%時，鋼號中一般只標出元素符號，而不標明含量，但在特殊情況下易致混淆者，在元素符號后亦可標以數(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。當合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時，在元素符號后面應標明含量，可相應表示為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，仍應在鋼號中標出。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。熱處理規(guī)范播報編輯臨界點溫度Ac1=770°C、Ac3=872°C、Ar3=708°C普通球化退火退火溫度780~810°C,以25°C/'h的冷卻速度隨爐緩慢降至≤650°C,出爐空冷。該工藝熱處理時間長達20h以上,且退火后碳化物的顆粒不均勻,會影響后續(xù)的冷加工及最終的淬、回火組織和性能。等溫球化退火退火溫度780~810°C,快冷至690~720°C,進行等溫,再出爐空冷。該工藝節(jié)省熱處理時間(整個工藝過程需時間12~18h),處理后的組織中碳化物細小均勻。重復球化退火第一次加熱到810°C后冷卻至650°C,再加熱到790°C后冷卻到≤650°C,出爐空冷。該工藝雖可節(jié)省一定的時間,但工藝操作過程比較繁瑣。淬、回火處理淬火溫度830~860°C,油冷,回火溫度170 ~190°C。冷處理溫度-50~ -78°C。 [2]典型應用舉例播報編輯（1）可用作成形滾輪。（2）也可用于制作尺寸較大、形狀較復雜和精度較高的塑料模。新手上路成長任務編輯入門編輯規(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信息封禁查詢與解封?2024?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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(體積分數(shù)為50%馬氏體),經(jīng)840°C油冷淬火后,350°C回火狀態(tài),再進行光淬火,表面硬度高達1096HV,淬硬層深度可達1mm。針對成形滾輪熱處理工藝的不足,采用薄邊處預冷降溫發(fā)生非馬氏體轉(zhuǎn)變,產(chǎn)生托氏體或索氏體，增強韌性、減小應力、再整體淬火達到工藝要求。進行冰冷處理,可提高軸承的尺寸穩(wěn)定性,或進行馬氏體分級淬火,以穩(wěn)定殘留奧氏體,獲得高的尺寸穩(wěn)定性和較高的韌性。該鋼一般不建議進行鍛造。一般淬火和低溫回火后使用。 [1] 標號/牌號：中國GB/JB標號: GCr15SiMn德國DIN鋼號標號: 100CrMn6德國DIN材料標號: 1．3520鍛造工藝軸承鋼鍛造溫度(1)始鍛溫度：1150(1120)終緞溫度：850(800)度。(2)鍛造前清除表面缺陷，盡量預熱后在快速加熱。(3)溫加工時，應避免200~400度的藍脆區(qū)。熱加工時，應避免進入高溫脆區(qū)(大于1250)。應盡量避免進入熱脆區(qū)(800~~950度)。鍛后熱處理(1)鍛后————預先熱處理(球化退火)————最終熱處理(淬火+低溫回火)(2)球化退火目的：降低硬度，便于加工，為淬火做準備。球化退火過程：加熱到750~~770度，保溫一定時間，在緩慢冷卻到600度以下空冷。(3)各種軸承鋼淬火+低溫回火及硬度表鋼號 淬火溫度及淬火介質(zhì) 低溫回火 硬度HRCGCr15SiMn 800~840 油 150~170 62~64淬火及淬火介質(zhì)(1)淬火顏色(經(jīng)驗) 白色最硬而脆，黃色硬而韌，蘭色軟而韌。(2) 淬火介質(zhì)A 水：一般溫度不超過40度，不得有油，肥皂等雜質(zhì)。B 鹽及堿的水溶液：水中加百分之5~10的鹽或堿。鹽溶液冷卻速度是水的十倍，硬度高而均勻，但組織應力大，有一定的銹蝕作用。溫度小于60度。堿溶液(苛性納水溶液)腐蝕性大，適應范圍小。C 油：包括機油，錠子油，變壓器油，柴油等?？蓽p小變形與開裂。不適用碳鋼。油溫度：在60~~80度，最高不超過100~120度?；鼗饻囟容S承鋼采用低溫回火。溫度：150~250度?？稍诒３指哂捕群透吣湍バ缘那疤嵯?，降低內(nèi)應力和脆性，以免使用時崩裂或過早損壞。特性●特性及適用范圍：是在 GCr15鋼基礎上，適當提高Si、Mn含量以改善其淬透性和彈性極限，耐磨性也比 GCr15好。制造滾動體的適用尺寸范圍比 GCr15大，主要用于制造壁厚>12mm，外徑>280mm 的軸承套圈鋼球直徑>50mm；圓錐、圓柱和球面滾子直徑>22mm和所有尺寸的滾針。參考對應牌號中國GB/YB標準牌號GCr15SiMn、德國DIN標準牌號100CrMn6、德國DIN標準材料編號1. 3520、俄羅斯ΓOCT標準牌號ⅢX15CΓ。 [2] 化學成分碳 C ：0.95～1.05硅 Si：0.40～0.65錳 Mn：0.90～1.20硫 S ：≤0.020磷 P ：≤0.027鉻 Cr：1.30～1.65鎳 Ni：≤0.30銅 Cu：≤0.25力學性能抗拉強度 σb (MPa)：1831沖擊功 Akv (J)：23硬度 ：65HRC試樣尺寸：某試樣●熱處理規(guī)范及金相組織：熱處理規(guī)范：830～840℃淬火，油冷;160℃回火3h。金相組織：回火馬氏體。gcr15simn表示方法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，除個別微合金元素外，一般以百分之幾表示。當平均合金含量<1.5%時，鋼號中一般只標出元素符號，而不標明含量，但在特殊情況下易致混淆者，在元素符號后亦可標以數(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。當合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時，在元素符號后面應標明含量，可相應表示為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，仍應在鋼號中標出。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。熱處理規(guī)范臨界點溫度Ac1=770°C、Ac3=872°C、Ar3=708°C普通球化退火退火溫度780~810°C,以25°C/'h的冷卻速度隨爐緩慢降至≤650°C,出爐空冷。該工藝熱處理時間長達20h
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