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NM400特種鋼板-耐候鋼/耐腐蝕鋼板系列
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型高強度耐磨鋼板表面硬度360～450HB應用范圍工程機械、礦山機械等名稱來源“耐”和“磨”字漢語拼音首位字母400是布氏硬度值HB值交貨狀態(tài)調(diào)質(zhì)目錄1定義2化學成分3力學性能4常用規(guī)格5取樣試驗6鋼板加工7對照表8應用前景定義播報編輯舞鋼NM400實物圖片NM400是耐磨鋼板的一種。NM—表示耐磨用途的“耐”和“磨”字漢語拼音首位字母 400是布氏硬度值HB值。（400硬度值是廣義的，國產(chǎn)NM400硬度值范圍360-420。）NM400耐磨鋼板廣泛應用于工程機械、礦山機械、煤礦機械、環(huán)保機械、冶金機械等產(chǎn)品零部件。挖掘機、裝載機、推土機鏟斗板、刃板、側(cè)刃板、刀片。破碎機襯板、葉片。耐磨鋼板交貨狀態(tài)分為：調(diào)質(zhì)(即淬火加回火)化學成分播報編輯成份廠家CSiMnPSCrMoNiBCEV牌號-----------NM400舞鋼≤0.25≤0.70≤1.60≤0.025≤0.010≤1.4≤0.50≤1.00≤0.004-力學性能播報編輯鋼種等級硬度（HB）20℃AKV縱向JWNM400A360～430-WNM400B360～430-提供鋼板拉伸性能Rp0.2、Rm、A50的實測值。提供鋼板0℃、-20℃縱向沖擊的實測值（AKV）。硬度表示法NM400的布氏硬度HB及常用硬度表示法↓厚度mm寬度m長度m尺寸表示方法↓向下看底部硬度分為：洛氏硬度、布氏硬度、維氏硬度、里氏硬度、肖氏硬度、巴氏硬度、努氏硬度、韋氏硬度。維氏硬度以HV表示、洛氏硬度可分為HRA、HRB、HRC、HRD、布氏硬度以HB[N(kgf/mm2)]表示（HBS\HBW）（參照GB/T231－1984），生產(chǎn)中常用布氏硬度法測定經(jīng)退火、正火和調(diào)質(zhì)的鋼件硬度不是一個簡單的物理概念，而是材料彈性、塑性、強度和韌性等力學性能的綜合指標。硬度試驗根據(jù)其測試方法的不同可分為靜壓法（如布氏硬度、洛氏硬度、維氏硬度等）、劃痕法（如莫氏硬度）、回跳法（如肖氏硬度）及顯微硬度、高溫硬度等多種方法。常用規(guī)格播報編輯材 質(zhì)厚度寬度長度備 注NM400822008000四切理計NM4001022008000舞鋼NM4001022009000厚*寬*長NM40012255010550舞鋼NM4001522008000四切理計NM4002022008000四切理計NM40025220010000四切理計NM40030220010000四切理計NM4003621007500四切理計NM4004022008000四切理計NM4004522008000四切理計NM4005022008000四切理計NM4006022008000四切理計NM40070220010000舞鋼NM4007522009000厚*寬*長NM4008022008000舞鋼另有大量規(guī)格未列出，可雙定尺定扎。 [1]取樣試驗播報編輯序號檢驗項目取樣數(shù)量取樣方法試驗方法1拉伸1GB/T2975-82GB228/T-20022沖擊3GB/T2975-82GB/T229-19943硬度1GB/T2975-82GB231-84硬度檢驗：在鋼板表面銑掉1.0-2.5mm，然后在此表面進行硬度檢驗。一般推薦您銑掉2.0mm，進行硬度檢驗。鋼板加工播報編輯1、鋼板切割方法適用于冷切割和熱切割。冷切割包括有水射流切割、剪切、鋸切或磨料切割；熱切割包括有氧氣燃料火焰切割（以下簡稱“火焰切割”）、等離子切割和激光切割。2、切割方法：通過相關(guān)工藝試驗，掌握鋼板各種切割方法的一般特性和切割厚度范圍。3、高級別耐磨鋼的火焰切割方法與普通低碳和低合金鋼的切割一樣簡單，在切割耐磨鋼厚板時，需要注意?。?！隨著鋼板厚度和硬度的增加，切割邊部出現(xiàn)裂紋傾向加大。為防止鋼板切割裂紋的產(chǎn)生，切割時應遵循以下建議：切割裂紋：鋼板切割裂紋類似于焊接時產(chǎn)生氫致裂紋，如果鋼板切邊產(chǎn)生裂紋，將會在切后48小時至幾周內(nèi)才出現(xiàn)。因此，切割裂紋屬于延遲性裂紋，鋼板厚度和硬度越大，出現(xiàn)切割裂紋就越大。預熱切割：預防鋼板切割裂紋最有效的方法，就是在切割前進行預熱。在進行火焰切割前，鋼板通常都要預熱，其預熱溫度高低主要取決于鋼板質(zhì)量等級和板厚，見表2.預熱方法可采用火焰燒槍、電子加熱墊進行的，也可以使用加熱爐加熱。為確定鋼板預熱效果，應在加熱點被面測試所需溫度。注意：預熱特別注意，要使正個鋼板界面均勻受熱，以免接觸熱源的區(qū)域出現(xiàn)局部過熱現(xiàn)象。低速切割：避免切割裂紋的另一種方法就是降低切割速度。如果無法進行整版預熱，則可以使用局部預熱法代替。使用低速切割方法防止切割裂紋，其可靠性不如預熱。我們建議切割前先對切割帶用火焰槍空跑幾趟進行預熱，預熱溫度達到100°C左右為宜。其最大切割速度取決于鋼板等級和厚度特別說明：將預熱和低速兩種火焰切割方法結(jié)合使用，可以進一步降低切割裂紋的出現(xiàn)幾率。切割后緩冷要求：無論對切割部件是否預熱，鋼板切割后的緩冷都會有效降低切割裂紋的風險。如果切割后將其帶有溫熱的不見進行堆放，使用隔熱毯將其覆蓋，也可以實現(xiàn)緩冷，緩冷要求冷卻到室溫。切割后加熱要求：對于耐磨鋼板的切割，切割后立即采取加熱（低溫回火），也是預防切割裂紋的有效方法和措施。鋼板切厚通過低溫回火處理，可以有效消除切割參與應力（低溫回火工藝；保濕時間安5min/mm）對于切割后加熱的方法，也采用燃燒槍、電子加熱毯和節(jié)哀熱爐的加熱方式進行切割后的加熱。4、降低鋼板軟化的措施鋼的抗軟化特性主要取決于它的化學成分、微觀組織和加工方式。對于熱切割的部件，部件越小，整個部件軟化的風險就越大。如果鋼板溫度超過200-250°C，鋼板硬度就會降低。切割方法：鋼板在切割小型部件時，焊槍和預熱所供應的熱量將會在工件中聚集。切割不見尺寸越小，切割工件尺寸不得小于200mm，否則工件就將有軟化的風險。消除軟化風險的最好的辦法是冷切割，例如水射流切割。若必須使用熱切割，則有限選擇等離子或激光切割。這是因為火焰切割給工件提供更多的熱量，因此提高了工件的溫度。水下切割方法：限制和降低軟化區(qū)范圍的有效方法，在切割過程中使用水來楞伽鋼板及切割表面。因此，鋼板即可放在水中切割，也可以向切割面噴水進行切割。使用水下切割方法可選擇等離子或火焰切割。水下切割具有以下特征：切割熱影響區(qū)小；防止整個工件的硬度降低；減少切割工件變形；切割后可以直接對工件進行冷卻。對照表播報編輯NM400耐磨鋼板與進口鋼種對照表舞鋼WYJ/WJX日本企準JFE瑞典標準SSAB德國標準DILLIDUR住友企準SUMIHARDWNM400系列JFE-EH400HARDOX400400VK400NM400耐磨鋼板國產(chǎn)牌號對照表舞鋼WYJ/WJX武鋼WISCO寶鋼HARD新鋼Q/XGJ首鋼JX62WNM400NM400HARDOX400NM400NM400應用前景播報編輯生產(chǎn)用于工程機械、礦山機械、煤礦機械、環(huán)保機械、冶金機械等制造企業(yè) 挖掘機、裝載機、推土機鏟斗板、刃板、側(cè)刃板、刀片、破碎機襯板、葉片建設項目的nm400鋼板5000余噸。在出口美國、加拿大、澳洲、印度、歐洲的前景一片看好。已經(jīng)直供歐洲客戶20000余噸。 舞鋼生產(chǎn)技術(shù)領(lǐng)先。舞鋼產(chǎn)品現(xiàn)貨較少，需要定扎，可供8-120mm厚最寬至3900mm。舞鋼產(chǎn)專用特殊鋼（12MnNiVR、14Cr1MoR（H）、SA387Gr11（22）CL2、07MnNiMoVDR、NM400、NM500、SA203E、WDB620、15CrMoR、09MnNiDR、16MnDR、15MnNiDR、P355GH、16Mo3、13CrMo4-5、P265GH、P295GH、20g、16Mng、15CrMog、12CrMoVg、 19Mng、22Mng、13MnNiCrMoNbg、13MnNiMoNbR、15MnNbR、20R、16MnR、15MnVR 、13MnNiMoNbR、15MnNbR 、15MnVNiR、A515Gr60、A516Gr65、A515Gr70、A516Gr55 、A516Gr60、A516Gr65、A516Gr70、A537CL1、A537CL2、EQ56、EQ70、NVE690、E420、E550、WH70Q、（C、D、E、）、WH80QD、（E）、WH100QD、WQ690D、WQ690E 、WQ700D、WQ700E、 Q690D、Q690E、A/SA533B、A/SA533C、SA514系列、SA514Q、SA514QF、SA514GrF、A514GrQ、A517GrQ、S690Q、S690QL、S890Q、S960Q、S960QL、WQ890D、WQ960C、WQ960D、WQ960E、WQ1100D/E等）鍋爐及壓力容器用鋼板，造船及采油平臺用鋼板，耐磨鋼，低合金高強度鋼板，高強度高韌性鋼板等。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(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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