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本文以含Ti,P,Cu低合金钢为试验钢,研究了高Cu及高Ti含量钢在热轧大型型钢时,热轧工艺与组织性能、钢的高温热塑性以及热轧工艺对铁素体晶粒细化的影响。试验结果表明:（l）本试验钢热轧材的力学性能稳定,热轧工艺对综合力学性能影响较小,这有利于工业性大生产;（2）试验钢虽含高Cu及高Ti,仍具有良好的热塑性及宽展性能,可满足热轧型钢的要求;（3）细化铁素体晶粒效果大,有利于提高钢的强韧性:（4）高Cu钢在高温加热轧制时,因钢中各元素的选择性氧化,易形成热脆网裂,因此应尽量采用低温加热轧制或采用弱氧化性及还原性气氛加热。
In this paper, Ti, P, Cu low alloy steel as the test steel, high Cu and high Ti content of steel in the hot-rolled large sections, the hot-rolling process and microstructure and properties of high temperature thermoplastic steel and hot-rolled steel on the ferrite Effect of grain refinement. The test results show that: (1) the mechanical properties of the hot-rolled steel in the test are stable, and the hot-rolling process has less influence on the comprehensive mechanical properties, which is beneficial to industrial large-scale production; (2) Although the test steel contains high Cu and high Ti, Still has a good thermoplastic properties and widening performance, to meet the requirements of hot-rolled steel; (3) refining the ferrite grain effect is conducive to enhancing the toughness of the steel: (4) high-Cu hot-rolled at high temperature rolling , Due to the selective oxidation of various elements in the steel, easy to form a hot brittle net cracking, it should try to use low-temperature heating or rolling using a weak oxidizing and reducing atmosphere heating.