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WNM450特種鋼板-耐候鋼/耐腐蝕鋼板系列
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.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)人中心收藏查看我的收藏0有用+10播報(bào)討論上傳視頻舞鋼產(chǎn)高級別調(diào)質(zhì)型耐磨鋼板是舞陽鋼鐵生產(chǎn)的高級調(diào)質(zhì)型耐磨鋼板，執(zhí)行企業(yè)標(biāo)準(zhǔn)WYJ101-2009，其牌號等級低于WNM500且高于WNM360、WNM400。該名稱中“W”代表舞鋼，“NM”表示耐磨用途，“450”對應(yīng)布氏硬度值范圍（約430-490HBW），“A/B/C”為質(zhì)量等級標(biāo)識（A級不進(jìn)行沖擊試驗(yàn)，B級需滿足20℃沖擊要求）。鋼板厚度范圍8-80mm，以淬火+回火狀態(tài)交貨，主要應(yīng)用于礦山煤礦、環(huán)保設(shè)備、工程車輛等耐磨部件制造 [1] [3]。采用電爐+爐外精煉工藝生產(chǎn)，化學(xué)成分嚴(yán)格控制碳、硅、錳等元素，抗拉強(qiáng)度≥1020MPa，屈服強(qiáng)度約1140MPa，延伸率約18%。切割加工需根據(jù)厚度選擇冷切割或預(yù)熱至100℃以上的熱切割工藝，切割后需緩冷或回火處理防止開裂 [2]。其性能參數(shù)符合GB/T709標(biāo)準(zhǔn)，可替代進(jìn)口同類產(chǎn)品，在提升工程機(jī)械易損件壽命方面具有顯著效果 [1] [3]。中文名類 型高級別調(diào)質(zhì)型耐磨鋼板用 途礦山煤礦等切割方法冷切割和熱切割目錄1產(chǎn)品介紹2切割方法產(chǎn)品介紹播報(bào)編輯主要用于礦山、煤礦、環(huán)保、通風(fēng)設(shè)備、自卸卡車及各種工程機(jī)械用耐磨易損件加工和制造等使用的結(jié)構(gòu)鋼板。 牌號表示方法：鋼板牌號由代表生產(chǎn)廠家、用途、硬度及質(zhì)量等級等四個(gè)部分按順序組成，例如：WNM500A，WNM500B等 符號：W-----表示舞陽鋼鐵有限責(zé)任公司的“舞”字漢語拼音的首位字母； NM----表示耐磨用途的“耐”和“磨”字漢語拼音首位字母； A、B--分別為質(zhì)量等級，同時(shí)A代表鋼板不做沖擊，B代表鋼板做20度常溫沖擊； 鋼板采用齊邊軋制，切頭尾，不切兩縱邊，其切邊余量按正常切邊板控制。 鋼板其余的尺寸、外形、重量及允許念頭應(yīng)符合GB/T709。 交貨狀態(tài)：調(diào)質(zhì)（淬火+回火）切割方法播報(bào)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”）、等粒子切割和激光切割。2、切割方法：通過相關(guān)工藝試驗(yàn)，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(shí)，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(shí)應(yīng)遵循以下建議：切割裂紋：鋼板切割裂紋類似于焊接時(shí)產(chǎn)生氫致裂紋，如果鋼板切邊產(chǎn)生裂紋，將會在切厚48小時(shí)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(yù)熱切割：預(yù)防鋼板切割裂紋最有效的方法，就是在切割前進(jìn)行預(yù)熱。在進(jìn)行火焰切割前，鋼板通常都要預(yù)熱，其預(yù)熱溫度高低主要取決于鋼板質(zhì)量等級和板厚，見表2.預(yù)熱方法可采用火焰燒槍、電子加熱墊進(jìn)行的，也可以使用加熱爐加熱。為確定鋼板預(yù)熱效果，應(yīng)在加熱點(diǎn)被面測試所需溫度。注意：預(yù)熱特別注意，要使正個(gè)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(jìn)行整版預(yù)熱，則可以使用局部預(yù)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(yù)熱。我們建議切割前先對切割帶用火焰槍空泡幾趟進(jìn)行預(yù)熱，預(yù)熱溫度達(dá)到100°C左右為宜。其最大切割速度取決于鋼板等級和厚度，詳見舞鋼市盛捷物資有限公司。（1356@959@4290@劉）特別說明：將預(yù)熱和低速兩種火焰切割方法結(jié)合使用，可以進(jìn)一步降低切割裂紋的出現(xiàn)幾率。切割后緩冷要求：無論對切割不見是否預(yù)熱，鋼板切割后的緩冷都會有效降低切割裂紋的風(fēng)險(xiǎn)。如果切割后將其帶有溫?zé)岬牟灰娺M(jìn)行堆放，使用隔熱毯將其覆蓋，也可以實(shí)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(yù)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(yīng)力（低溫回火工藝；保濕時(shí)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(jìn)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(xué)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(gè)部件軟化的風(fēng)險(xiǎn)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(shí)，焊槍和預(yù)熱所供應(yīng)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(fēng)險(xiǎn)。消除軟化風(fēng)險(xiǎn)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?yàn)榛鹧媲懈罱o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(jìn)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)??；防止整個(gè)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(jìn)行冷卻。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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WNM500屬于舞鋼產(chǎn)高級別調(diào)質(zhì)型耐磨鋼板；執(zhí)行舞鋼企業(yè)標(biāo)準(zhǔn)WYJ101-2009其牌號等級高于WNM360、WNM400、WNM450。中文名 WNM450 類 型 高級別調(diào)質(zhì)型耐磨鋼板 用 途 礦山煤礦等 切割方法 冷切割和熱切割WNM450介紹主要用于礦山、煤礦、環(huán)保、通風(fēng)設(shè)備、自卸卡車及各種工程機(jī)械用耐磨易損件加工和制造等使用的結(jié)構(gòu)鋼板。 牌號表示方法：鋼板牌號由代表生產(chǎn)廠家、用途、硬度及質(zhì)量等級等四個(gè)部分按順序組成，例如：WNM500A，WNM500B等 符號：W-----表示舞陽鋼鐵有限責(zé)任公司的“舞”字漢語拼音的首位字母； NM----表示耐磨用途的“耐”和“磨”字漢語拼音首位字母； A、B--分別為質(zhì)量等級，同時(shí)A代表鋼板不做沖擊，B代表鋼板做20度常溫沖擊； 鋼板采用齊邊軋制，切頭尾，不切兩縱邊，其切邊余量按正常切邊板控制。 鋼板其余的尺寸、外形、重量及允許念頭應(yīng)符合GB/T709。 交貨狀態(tài)：調(diào)質(zhì)（淬火+回火）
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