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一、前言鞍钢无缝钢管厂ф140机组原用的穿孔导板是Cr23Ni2铸钢的,经1140～1160℃固溶处理,炉冷到800℃出炉空冷后使用。由于质量差,经常断裂、粘钢,使用寿命只有2～5小时,严重影响钢管生产的产量和质量。我们新试制成功的Cr26Ni3SiTi穿孔导板,铸态使用就消除了断裂、熔化等缺陷,使用寿命提高到13～29小时,与日本穿孔导板相比,合金含量少,使用寿命高两倍以上。为了轧好石油管、不锈管,又试制成功具有我国特色的Cr30Ni5Si2Ti穿孔导板,使用寿命达24小时以上。与罗马尼亚Cr30Ni5相比,我们的导板薄,使用寿命却超过了他们。
I. Introduction Angang Seamless Steel Tube Plant ф140 original perforated plate unit is Cr23Ni2 steel, the 1140 ~ 1160 ℃ solution treatment, furnace cooling to 800 ℃ baked after use. Due to poor quality, often broken, stick steel, the service life of only 2 to 5 hours, seriously affecting the yield and quality of steel production. Our new pilot Cr26Ni3SiTi perforated guide plate, the use of cast to eliminate the rupture, melting and other defects, the service life increased to 13 to 29 hours, compared with the Japanese perforation guide plate, the alloy content less than two times the service life. In order to roll a good oil pipe, stainless steel tube, but also successfully produced with our own characteristics Cr30Ni5Si2Ti perforation guide plate, the service life of more than 24 hours. Compared with the Romanian Cr30Ni5, our guides are thin and their service life exceeds them.