冷軋板帶退火是使冷軋板帶再冷軋板，消除冷軋加工硬化，恢復(fù)塑性以得到預(yù)期的物理及物理一化學(xué)性能的熱處理工序。工藝流程上一般分為預(yù)備退火、中間退火和成品退火。退火工藝隨目的之不同，常采用再結(jié)晶退火、不完全退火和完全退火。為了獲得表面無(wú)氧化不脫碳的板帶，將板帶在保護(hù)氣氛中完成光亮退火。退火方式有罩式退火和連續(xù)退火。

Annealing of cold rolled strip is a heat treatment process that makes cold rolled strip, eliminates hardening of cold rolled processing, and restores plasticity to obtain the expected physical and chemical properties. The process is generally divided into preparatory annealing, intermediate annealing and finished product annealing. In the annealing process, recrystallization annealing, incomplete annealing and complete annealing are often used. In order to obtain the plate band without oxidation and decarbonization on the surface, the plate band completes the bright annealing in the protective atmosphere. Annealing mode has cover type annealing and continuous annealing.

冷軋帶鋼表面粗糙度作為體現(xiàn)冷軋帶鋼表面質(zhì)量的重要特性之一，不僅影響到帶鋼沖壓時(shí)的變形行為和涂鍍后的外觀面貌，而且可以改變材料的耐蝕性。為提高沖壓潤(rùn)滑性、涂裝質(zhì)量和漆層附著力，家電用冷板要求有一定范圍的均勻的表面粗糙度。通常情況下帶鋼表面粗糙度Ra控制在0.7～1.7μm范圍內(nèi)。

As one of the important characteristics of the surface quality of cold-rolled strip, it not only affects the deformation behavior and the appearance after coating, but also can change the corrosion resistance of the material. In order to improve the stamping lubrication, coating quality and paint layer adhesion, the cold plate for home appliances requires a certain range of uniform surface roughness. Generally, the surface roughness of strip steel is controlled in the range of 0.7 to 1.7 μ m.

冰箱家電板比普通冷軋板增加了硬度要求和表面粗糙度要求，此外屈服強(qiáng)度也高于一般冷軋板，在具有高強(qiáng)度的同時(shí)延伸率值又相對(duì)較高，這就對(duì)產(chǎn)品力學(xué)性能指標(biāo)提出了多項(xiàng)控制要求。

Compared with ordinary cold rolled plate, the hardness requirements and surface roughness requirements. In addition, the yield strength is also higher than the general cold rolled plate, which has high strength and the elongation value is relatively high, which puts forward a number of control requirements for the mechanical performance index of products.