高速钢复合轧辊离心铸造生产工艺
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金化技术是最早应用于薄板坯连铸连轧流程的微合金化技术。通过大量的基础研究和生产实践</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">人们已认识到在奥氏体中固溶度大、析出温度低、对粗晶奥氏体再结晶的抑制作用小的特点</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">与薄板坯连铸连轧流程加热温度低、加热时间短、铸造粗晶组织直轧的特点相适应</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">特别是氮含量高的电炉</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">――</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">薄板坯连铸连轧流程更有利于发挥钒的作用；已开发出屈服强度</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">275</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">～</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">550MPa</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">级的各种用途的低合金高强度钢；发现了钒及其碳氮化物在薄板坯连铸连轧流程上对组织超细化的作用</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">开发出铁素体晶粒尺寸为</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">～</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">4μm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">、屈服强度达</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">550MPa</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">级的超细晶高成形性结构钢。</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman"> <BR> </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">采用微-合金</A>化技术可获得较高的强度</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">但传统流程上的</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金钢的主要强化机制是</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V(C,N)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">粒子的沉淀强化</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">在强度提高的同时韧性却降低。通过研究薄板坯连铸连轧</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">的固溶与析出规律</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">合理地控制连铸和均热工艺</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">可在薄板坯连铸连轧铸坯上获得纳米级</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V(C,N)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">析出物</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">并通过其细化晶粒的作用</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">获得超细化组织</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">使产品在具有高的强度的同时具有良好的韧性。</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman"> <BR> </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">虽然薄板坯连铸连轧</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金化技术已经取得了长足的发展，但在以后的研究中还需重点解决以下问题：连铸连轧</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金钢组织超细化的机理</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">一方面改善</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金钢的综合性能</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">拓展</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">V</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">微合金钢的应用范围</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">另一方面完善超细晶粒钢的技术体系</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: #505050; FONT-SIZE: 9.5pt; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥">使超细晶粒钢实现工业化生产。</SPAN><SPAN style="FONT-FAMILY: ˎ̥; COLOR: #505050; FONT-SIZE: 9.5pt" lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
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