CN108624798B - 一种高耐磨性的轧机导卫衬板 - Google Patents
一种高耐磨性的轧机导卫衬板 Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 238000005121 nitriding Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 229910018084 Al-Fe Inorganic materials 0.000 claims abstract description 4
- 229910018192 Al—Fe Inorganic materials 0.000 claims abstract description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 4
- 229910019589 Cr—Fe Inorganic materials 0.000 claims abstract description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 4
- 229910001145 Ferrotungsten Inorganic materials 0.000 claims abstract description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims abstract description 4
- 229910000542 Sc alloy Inorganic materials 0.000 claims abstract description 4
- 229910011212 Ti—Fe Inorganic materials 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims abstract description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 4
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- 238000002844 melting Methods 0.000 claims description 6
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- 238000007788 roughening Methods 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 238000005255 carburizing Methods 0.000 abstract description 3
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Abstract
本发明公开了一种高耐磨性的轧机导卫衬板,所述衬板的化学成分及其质量百分含量(％)为：3.6‑5.2％的Cr‑Fe、3.33‑4.56％的Mo‑Fe、1.25‑2.22％的Ti‑Fe、1.85‑2.37％的Zn‑Fe、4.5‑4.85％的Al‑Fe、0.75‑0.88％的渗碳剂、0.8‑1.0％的锰铁、0.63‑0.82％的镍铬铸铁、1.25‑2.7％的钨铁、0.06‑0.15％高纯钪合金、0.15‑0.30％稀土镁合金、余量为铁；本发明在经过选材制备得到之后，对衬板进行一系列的加工工艺处理，之后通过对衬板进行渗氮处理之后，可在很大程度上去提升衬板的含氮量。
Description
技术领域
本发明属于导卫衬板领域，涉及一种轧机导卫，具体是一种高耐磨性的轧机导卫衬板。
背景技术
导卫就是指在型钢轧制过程中，安装在轧辊孔型前后帮助轧件按既定的方向和状态准确地、稳定地进入和导出轧辊孔型的装置；而导卫具备下述优点：可以去除轧件的氧化铁皮，可以使轧件表面更光滑；可以增加轧件表面强度；同时也能使得轧钢过程更安全、更稳定；
衬板是用来保护筒体，使筒体免受研磨体和物料直接冲击和磨擦，同时也可利用不同形式的衬板来调整研磨体的运动状态，以增强研磨体对物料的粉碎作用，有助于提高磨机的粉磨效率，增加产量，降低金属消耗。而当前缺乏一种耐磨性能好的导卫衬板；为解决上述缺陷，现提供一种解决方案。
发明内容
本发明的目的在于提供一种高耐磨性的轧机导卫衬板。
本发明的目的可以通过以下技术方案实现：
一种高耐磨性的轧机导卫衬板，所述衬板的化学成分及其质量百分含量(％)为：
3.6-5.2％的Cr-Fe、3.33-4.56％的Mo-Fe、1.25-2.22％的Ti-Fe、1.85-2.37％的Zn-Fe、4.5-4.85％的Al-Fe、0.75-0.88％的渗碳剂、0.8-1.0％的锰铁、0.63-0.82％的镍铬铸铁、1.25-2.7％的钨铁、0.06-0.15％高纯钪合金、0.15-0.30％稀土镁合金、余量为铁；
所述衬板由下述步骤制备得到：
步骤一：将上述材料加入熔炉内进行融化，之后将融化的铁液注入到衬板模具内部得到钢板；
步骤二：对钢板进行调质处理，并将经过调制处理之后的钢板表面进行粗加工至一定粗糙度；
步骤三：对钢板基体表面进行脱脂及活化，将得到的钢板放入碱液中清洗以去除表面的油脂及轻微锈蚀，已清洗的钢板经风干后，采用喷砂工艺对工件表面进行粗化处理，使净化处理过的表面更加活化得到衬板；
步骤四：对衬板进行火焰喷焊，采取一步喷焊法对衬板进行火焰喷焊：将衬板加热至预保护粉开始润湿、出现“镜面”时，开始送粉喷焊，送粉操作为间歇性送粉；具体操作为：将粉末均匀地喷在局部区域达预定厚度后，用同一火焰对此区域的合金粉层加热到熔融，当出现“镜面”反光现象后，再将喷枪慢慢移至另一区域，并重复上述过程，直至工件表面全部覆盖喷焊层达一定厚度；
步骤五：对衬板进行后期处理，将步骤四得到的带有喷焊层的衬板缓慢冷却后，对喷焊层表面进行打磨处理，然后将喷焊产品按照工艺图纸精加工到指定规格后，即得到轧机用耐磨衬板；
步骤六：对衬板进行渗氮处理。
进一步地，所述步骤一中所述的调质处理工艺为淬火+高温回火；其中淬火温度范围为810℃±5℃，冷却方式为油冷；回火温度为520℃±10℃，冷却方式可以是水冷、油冷或空冷。
进一步地，所述步骤六中渗氮处理步骤如下：对衬板进行升温，升温速度不大于75℃/h，升温到630℃时通甲醇，升到760℃时通异丙醇，升温到935-955℃时保温，先放入渗氮试样，均温1.9-2.4h，之后在氮势1.25％条件下强渗45-50h，然后在氮势0.83％条件下扩散23-26h，在氮势0.83％条件下降温到790℃±10℃停炉，降温时间为5-6h，最后自然冷却至低于420℃出炉。
本发明的有益效果：本发明在经过选材制备得到之后，对衬板进行一系列的加工工艺处理，之后通过对衬板进行渗氮处理之后，可在很大程度上去提升衬板的含氮量；从而使得本发明衬板不仅具备良好的耐磨性能，而且其硬度大，强度高，具备很高的物理和化学性能；同时通过本发明中的渗氮处理，能够有效的提高衬板含氮量，借以提升其化学性能；本发明简单有效，易于实用。
具体实施方式
一种高耐磨性的轧机导卫衬板，所述衬板的化学成分及其质量百分含量(％)为：
3.6-5.2％的Cr-Fe、3.33-4.56％的Mo-Fe、1.25-2.22％的Ti-Fe、1.85-2.37％的Zn-Fe、4.5-4.85％的Al-Fe、0.75-0.88％的渗碳剂、0.8-1.0％的锰铁、0.63-0.82％的镍铬铸铁、1.25-2.7％的钨铁、0.06-0.15％高纯钪合金、0.15-0.30％稀土镁合金、余量为铁；
所述衬板由下述步骤制备得到：
步骤一：将上述材料加入熔炉内进行融化，之后将融化的铁液注入到衬板模具内部得到钢板；
步骤二：对钢板进行调质处理，并将经过调制处理之后的钢板表面进行粗加工至一定粗糙度；
步骤三：对钢板基体表面进行脱脂及活化，将得到的钢板放入碱液中清洗以去除表面的油脂及轻微锈蚀，已清洗的钢板经风干后，采用喷砂工艺对工件表面进行粗化处理，使净化处理过的表面更加活化得到衬板；
步骤四：对衬板进行火焰喷焊，采取一步喷焊法对衬板进行火焰喷焊：将衬板加热至预保护粉开始润湿、出现“镜面”时，开始送粉喷焊，送粉操作为间歇性送粉；具体操作为：将粉末均匀地喷在局部区域达预定厚度后，用同一火焰对此区域的合金粉层加热到熔融，当出现“镜面”反光现象后，再将喷枪慢慢移至另一区域，并重复上述过程，直至工件表面全部覆盖喷焊层达一定厚度；
步骤五：对衬板进行后期处理，将步骤四得到的带有喷焊层的衬板缓慢冷却后，对喷焊层表面进行打磨处理，然后将喷焊产品按照工艺图纸精加工到指定规格后，即得到轧机用耐磨衬板；
步骤六：对衬板进行渗氮处理。
进一步地，所述步骤一中所述的调质处理工艺为淬火+高温回火；其中淬火温度范围为810℃±5℃，冷却方式为油冷；回火温度为520℃±10℃，冷却方式可以是水冷、油冷或空冷。
进一步地，所述步骤六中渗氮处理步骤如下：对衬板进行升温，升温速度不大于75℃/h，升温到630℃时通甲醇，升到760℃时通异丙醇，升温到935-955℃时保温，先放入渗氮试样，均温1.9-2.4h，之后在氮势1.25％条件下强渗45-50h，然后在氮势0.83％条件下扩散23-26h，在氮势0.83％条件下降温到790℃±10℃停炉，降温时间为5-6h，最后自然冷却至低于420℃出炉。
一种高耐磨性的轧机导卫衬板，在经过选材制备得到之后，对衬板进行一系列的加工工艺处理，之后通过对衬板进行渗氮处理之后，可在很大程度上去提升衬板的含氮量；从而使得本发明衬板不仅具备良好的耐磨性能，而且其硬度大，强度高，具备很高的物理和化学性能；同时通过本发明中的渗氮处理，能够有效的提高衬板含氮量，借以提升其化学性能；本发明简单有效，易于实用。
以上内容仅仅是对本发明结构所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。
Claims (1)
1.一种高耐磨性的轧机导卫衬板，其特征在于，所述衬板的化学成分及其质量百分含量(％)为：
3.6-5.2%的Cr-Fe、3.33-4.56%的Mo-Fe、1.25-2.22%的Ti-Fe、1.85-2.37%的Zn-Fe、4.5-4.85%的Al-Fe、0.75-0.88%的渗氮剂、0.8-1.0%的锰铁、0.63-0.82%的镍铬铸铁、1.25-2.7%的钨铁、0.06-0.15%高纯钪合金、0.15-0.30%稀土镁合金、余量为铁；
所述衬板由下述步骤制备得到：
步骤一：将上述衬板组份的原料加入熔炉内进行融化，之后将融化的铁液注入到衬板模具内部得到钢板；
步骤二：对钢板进行调质处理，并将经过调制处理之后的钢板表面进行粗加工至一定粗糙度；
所述步骤二中所述的调质处理工艺为淬火+高温回火；其中淬火温度范围为810℃±5℃，冷却方式为油冷；回火温度为520℃±10℃，冷却方式是水冷、油冷或空冷；
步骤三：对钢板基体表面进行脱脂及活化，将得到的钢板放入碱液中清洗以去除表面的油脂及轻微锈蚀，已清洗的钢板经风干后，采用喷砂工艺对工件表面进行粗化处理，使净化处理过的表面更加活化得到衬板；
步骤四：对衬板进行火焰喷焊，采取一步喷焊法对衬板进行火焰喷焊：将衬板加热至预保护粉开始润湿、出现“镜面”时，开始送粉喷焊，送粉操作为间歇性送粉；具体操作为：将粉末均匀地喷在局部区域达预定厚度后，用同一火焰对此区域的合金粉层加热到熔融，当出现“镜面”反光现象后，再将喷枪慢慢移至另一区域，并重复上述过程，直至工件表面全部覆盖喷焊层达一定厚度；
步骤五：对衬板进行后期处理，将步骤四得到的带有喷焊层的衬板缓慢冷却后，对喷焊层表面进行打磨处理，然后将喷焊产品按照工艺图纸精加工到指定规格后，即得到轧机用耐磨衬板；
步骤六：对衬板进行渗氮处理；
所述步骤六中渗氮处理步骤如下：对衬板进行升温，升温速度不大于75℃/h，升温到630℃时通甲醇，升到760℃时通异丙醇，升温到935-955℃时保温，先放入渗氮试样，均温1.9-2.4h，之后在氮势1.25%条件下强渗45-50h，然后在氮势0.83%条件下扩散23-26h，在氮势0.83%条件下降温到790℃±10℃停炉，降温时间为5-6h，最后自然冷却至低于420℃出炉。
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