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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(quán)威合作個人中心b30本詞條是一個多義詞，請在下列義項中選擇瀏覽添加義項微合金非調(diào)質(zhì)預硬化塑料模具鋼和貝氏體型鋼英偉達為中國市場開發(fā)簡化版AI芯片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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說明：非調(diào)質(zhì)預硬態(tài) 塑料模具鋼最大特點是它的組織和硬度沿模塊截面分布均勻，在重新熱加工前后，組織和硬度基本不變，交貨硬度HRC29-33，型腔個加工后，無需熱處理，有利于鉗工一次性完成拋光和修正。材料具有良好的加工性能和焊接性能。具有極佳的拋光性能。耐腐蝕性能和表面氮化性能。B30 鋼是微合金非調(diào)質(zhì)預硬化塑料模具鋼和貝氏體型鋼。該鋼是上海寶鋼研制的創(chuàng)新型專利產(chǎn)品, B是寶鋼的企業(yè)代號?？蛇M行滲氮處理進一步強化, 其性能優(yōu)于同類型的瑞典718鋼 (ASSAB)。該鋼焊接熱影響區(qū)的硬度變化明顯比2738 鋼小, 焊接性能較好。在此基礎上, 獲得較均勻硬度分布的焊接材料是結(jié)構(gòu)鋼焊條J107Cr,相應的焊接工藝是 350°C 預熱、 350°C 焊接及焊后 350°C 回火。按照 P20 鋼工藝, 鍛后空冷至 300°C后緩冷, 不用熱處理仍可保持交貨狀態(tài)?；瘜W成分： C% Si% Mn% V% Cr% Cu% Ni% Mo%0.20～0.30 0.20～0.60 ≥1.5 ≥0.05 ≥0.50 ≥0.10 ≥0.05 ≥0.20規(guī)格：厚度：20～500mm 寬度：250～1500mm。
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