The present invention relates to a high boron and low alloy roll and its manufacturing method. Its characteristics are as follows: the roll includes shaft head, shoulder and body. The shaft head and shoulder are cast by ductile iron. The roll body includes B, C, Cr, W, V, Si, Mn, Ti, Mg, Ni, Mo, RE and Fe and impurities. In view of the present composition of high speed steel roll, it is often used to ensure sufficient roll strength. The use of expensive alloying elements results in poor wear resistance and poor accident resistance, which leads to the reduction of roll life. A suitable amount of cheap boron is added to the roll to replace the relatively expensive alloying elements. On the basis of reducing the cost of alloying and ensuring the strength of the original roll, boride with high hardness is formed by the reaction of boron and iron to improve the roll resistance. At the same time, the hardenability and hardenability of rolls can be improved by adding boron, and the strength and toughness of rolls can be improved by cooperating with other alloy elements.
【技术实现步骤摘要】
一种高硼低合金轧辊及其制造方法
本专利技术涉及一种轧辊材料及其制造方法,具体涉及一种高硼低合金轧辊及其制造方法。
技术介绍
轧辊是现有技术中轧钢生产中所需的主要工作设备之一,其质量的好坏将直接影响到所轧制的轧材的表面质量、内部强度、轧制时间、及轧制成本,在目前条件下,如何以较少的合金成分含量、较低的生产成本浇注出能够满足相同甚至更高强度要求的轧辊,一直是目前为各大企业所广泛关注的问题。
技术实现思路
本专利技术要解决的技术问题是:为了克服现有技术中存在的不足和缺陷,本专利技术提供了一种一种高硼低合金轧辊及其制造方法。本专利技术解决其技术问题所采用的技术方案是:一种高硼低合金轧辊,其特征在于,所述轧辊包括轴头、辊肩及辊身,其中所述轴头及辊肩采用球墨铸铁铸造而成,所述辊身包含质量百分比为2.8~3.0的B,0.6~0.7的C,1.5~2.0的Cr,1.0~1.25的W,1.0~1.25的V,0.7~0.85的Si,0.15~0.25的Mn,0.10~0.12的Ti,0.16~0.18的Mg,0.5~1.5的Ni,0.2~0.5的Mo,0.08~0.12的RE,余量为Fe和杂质。进一步地,本专利技术还提供一种高硼低合金轧辊的制造方法,其特征在于:包括如下步骤:1)精选原材料:根据该高硼低合金轧辊中各成分所占的质量百分比,计算确定所需废钢、生铁、钨铁、钒铁、铬铁、钛铁、镍钢、钼钢、稀土镁合金、及硼铁颗粒的各自质量;2)电弧炉初炼:将步骤1)中计算确定的所需废钢、生铁、钨铁、钒铁、铬铁投入电弧炉中熔炼;将温度升至3450~3500℃,待熔炼出钢水后,在其中再加入钛铁、镍 ...
【技术保护点】
1.一种高硼低合金轧辊,其特征在于,所述轧辊包括轴头、辊肩及辊身,其中所述轴头及辊肩采用球墨铸铁铸造而成,所述辊身包含质量百分比为2.8~3.0的B,0.6~0.7的C,1.5~2.0的Cr,1.0~1.25的W,1.0~1.25的V,0.7~0.85的Si,0.15~0.25的Mn,0.10~0.12的Ti,0.16~0.18的Mg,0.5~1.5的Ni,0.2~0.5的Mo,0.08~0.12的RE,余量为Fe和杂质。
【技术特征摘要】
1.一种高硼低合金轧辊,其特征在于,所述轧辊包括轴头、辊肩及辊身,其中所述轴头及辊肩采用球墨铸铁铸造而成,所述辊身包含质量百分比为2.8~3.0的B,0.6~0.7的C,1.5~2.0的Cr,1.0~1.25的W,1.0~1.25的V,0.7~0.85的Si,0.15~0.25的Mn,0.10~0.12的Ti,0.16~0.18的Mg,0.5~1.5的Ni,0.2~0.5的Mo,0.08~0.12的RE,余量为Fe和杂质。2.一种如权利要求1所述的高硼低合金轧辊的制造方法,其特征在于:包括如下步骤:1)精选原材料:根据该高硼低合金轧辊中各成分所占的质量百分比,计算确定所需废钢、生铁、钨铁、钒铁、铬铁、钛铁、镍钢、钼钢、稀土镁合金、及硼铁颗粒的各自质量;2)电弧炉初炼:将步骤1)中计算确定的所需废钢、生铁、钨铁、钒铁、铬铁投入电弧炉中熔炼;将温度升至3450~3500℃,待熔炼出钢水后,在其中再加入钛铁、镍钢、钼钢、及稀土镁合金,当钢水升温至352...
【专利技术属性】
技术研发人员:吴江,
申请(专利权)人:镇江市丹徒区环宇轧辊厂,
类型:发明
国别省市:江苏,32
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