D evelopment P ractice ofΦ45-Φ60mm H igh P recision H ot R olled R ounds
JIANG Zilong
REN Li
ZHANG Qian
Abstract：Combining with the facility layout status of the bar production line, the development plan of large size and high precision hot rolled rounds was laid down. By strictly controlling furnace temperature of each section and start rolling temperature, applying high-pressure water descaling technology, precisely designing the pass system and adopting carbide rolls and special anti-scratch transfer guide grooves, Zhangdian Steel developed Φ45-Φ60 mm high precision hot rolled rounds of many steel grades such as Q235, 45 grade, 20 grade and spring steel. The products rapidly made batch production. The physical dimension and mechanical properties meet the needs of the Standard GB/T 702-2008.
Keywords：hot rolled roundshigh precisionlarge sizeproduct developmentpass designspecial guide groove
Publication Date：2013-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：2( 9-10 )