关键词: SPCC冷轧板, 退火温度, 织构, 应变硬化指数, 塑性应变比

Abstract: Taking the cold-rolled plate produced by CSP process with a 70% reduction rate from hot-rolled plate as the research object, the effect of annealing temperature (690-710 ℃) on the formability and texture of the cold-rolled plate was studied. The mechanical properties and texture were characterized by means of mechanical property test and X-ray diffraction method. The results show that under the same cold-rolling reduction rate, the mechanical properties of the cold-rolled plates annealed at three temperatures all meet the requirements of JISG 3141-1994 standard. At annealing temperature of 700 ℃, the strain hardening index n value and plastic strain ratio r value are the largest, and the γ-fiber texture intensity is higher, where the deep drawing performance of the material is better. However, as the annealing temperature further increases, the n and r values decrease, the γ-fiber texture is weakened, and the deep drawing performance decreases.

Key words: SPCC cold-rolled plate, annealing temperature, texture, strain hardening index, plastic strain ratio