本发明提供一种高合金热轧穿孔顶头,钢种组成元素及质量百分比为：C#0.10～0.40％,Si#0.15～1.00％,Mn#0.10～0.50％,P≤0.030％,S≤0.015％,Ni#0.50～1.00％,Cr#0.50～1.50％,Mo#2.00～6.00％,W#7.50～15.00％,Cu≤0.10％,Nb≤0.10％,V#0.20～0.50％,Ti#0.005～0.025％,Al#0.02～0.20％,残余元素N≤100ppm、O≤80ppm、As≤80ppm、Sn≤80ppm、Pb≤50ppm,余量为Fe。本发明的效果是高合金耐热穿孔顶头具有高温轧制不熔融,不开裂,不粘钢。穿轧效果良好,避免了轧制缺陷的产生,也提高了钢管产品的表面质量及成材率,同时穿孔寿命提高5倍以上。

The present invention provides a high-alloy hot-rolled piercing plug. The steel composition elements and mass percentages are: C#0.10～0.40%, Si#0.15～1.00%, Mn#0.10～0.50%, P≤0.030%, S≤0.015 ％,Ni#0.50～1.00％,Cr#0.50～1.50％,Mo#2.00～6.00％,W#7.50～15.00％,Cu≤0.10％,Nb≤0.10％,V#0.20～0.50％,Ti#0.005 ～0.025%, Al#0.02～0.20%, residual elements N≤100ppm, O≤80ppm, As≤80ppm, Sn≤80ppm, Pb≤50ppm, the balance is Fe. The effect of the invention is that the high-alloy heat-resistant piercing plug has high-temperature rolling without melting, cracking, and non-sticking to steel. The piercing and rolling effect is good, the rolling defects are avoided, the surface quality and the yield rate of the steel pipe products are also improved, and the piercing life is increased by more than 5 times.