摘要
阐述了第三代超级双相不锈钢SAF2507阀体的生产研制过程。SAF2507是超级双相不锈钢中含铬、钼、镍和氮的量都高于第二代双相不锈钢。在生产过程中及易出现气孔、氧化夹渣、裂纹等缺陷,造成废品率较高,焊补量较大。通过采用AOD精炼炉对钢液进行精炼,控制C、P、S的含量在下线,有效地控制N的含量,目前已攻克了难关且能够批量生产SAF2507阀门铸件及同类产品。
This paper mainly discusses the third generation of the super duplex stainless steel SAF2507 body production process SAF2507 is super duplex stainless steel in chromium, molybdenum, nickel, and nitrogen content were higher than that of the second generation of duplex stainless steel. Frequently occur in the process of production and air hole, the oxidation slag inclusion, cracks and other defects, causing high rejection rate, weld quantity is bigger. Now to conquer the difficulties have been able to batch production SAF2507 valve castings and similar products.
出处
《中国铸造装备与技术》
CAS
2016年第5期53-56,共4页
China Foundry Machinery & Technology
