冷轧、轧硬、冷成形、酸洗之间的区别和应用中的差异

产品定义
在品种分析中，首先要明确的是这些产品的定义。这些通用名称通常指低碳钢线圈
酸洗：通常是指热轧钢卷在酸洗线后除去产品表面的氧化皮。
硬轧：通常是指热轧卷经酸洗后，经冷轧机轧制薄，但不退火的产品。
冷轧：通常是指经过完全或不完全退火的硬卷产品。
冷成形：通常是指用电除尘器连铸连轧工艺生产的热轧酸洗带钢。
生产工艺差异
冷轧退火前的传统酸洗工艺与酸洗工艺不同。
然而，冷成形是一种新产品，它是由电除尘器生产线（将连铸和热轧工艺结合为一个单元）生产的。该工艺具有成本低、热轧厚度薄的特点，是近年来国内许多钢厂的主要发展方向。
综合性能和应用的差异
与热轧相比，酸洗卷材在基材上没有变化，经常用于对热轧表面质量要求较高的场合。通用品牌SPHC，业内俗称“酸洗C料”。
由于热轧钢卷价格不便宜，成形性和表面质量不好，所以通常只用于一些规格薄、性能要求低的特定行业，如伞骨或工厂换盒。通用品牌cdcm spcc，业内俗称“冷硬C料”
冷轧钢卷的综合性能很好，但缺点是价格最贵。普通品牌SPCC，业内俗称“冷轧C材”。
冷弯型钢的成形性能远好于硬轧型钢，但不及冷轧型钢（主要是受热处理能力和酸洗后大平面加工硬化的影响）。其突出的优点是成本很低，特别是在1.0～2.0的厚度范围内，用于替代成形要求低（如轧制、弯曲等）的冷轧产品。
ESP常用冷成型品牌有日照RECC、recd、马钢MCFC等。

Definition of products

In the analysis of varieties, the first thing to be clear is the definition of these products. These common names usually refer to low-carbon steel coil
Pickling: usually refers to the hot-rolled steel coil after pickling line to remove the surface scale products.
Hard rolling: usually refers to the hot-rolled coil after pickling, by cold rolling mill thin, but without annealing products.
Cold rolling: usually refers to the product of hard rolled coil after complete or incomplete annealing.
Cold forming: usually refers to hot-rolled pickling strip produced by ESP continuous casting and rolling process.
Differences in production process
The traditional pickling process before cold rolling and annealing is different from pickling process.
However, cold forming is a new product, which is produced by the ESP production line (combining the continuous casting and hot rolling processes into one unit). This process has the characteristics of low cost and thin hot rolling thickness, which is the main direction of many domestic steel mills in recent years.
Differences in comprehensive performance and Application
Compared with hot rolling, pickling coil has no change in the base material, which is often used in the occasions with higher surface quality requirements for hot rolling. Common brand SPHC, commonly known as "pickling C material" in the industry.
The price of hard rolled coil is not cheap, and the formability and surface quality are not good, so it is usually used only in some specific industries with thin specifications and low performance requirements, such as umbrella ribs or factory changing boxes. Common brand cdcm-spcc, commonly known as "cold hard C material" in the industry
The comprehensive performance of cold rolled coil is very good, but the disadvantage is that the price is the most expensive. Common brand SPCC, commonly known as "cold rolled C material" in the industry.
The formability of cold-formed coil is much better than that of hard rolled coil, but not as good as that of cold-rolled coil (mainly due to the influence of heat treatment capacity and large flat work hardening after pickling). The outstanding advantage is that the cost is very low, especially in the thickness range of 1.0 ~ 2.0, which is used to replace the cold rolled products with low forming requirements (such as rolling, bending, etc.).
Common cold forming brands of ESP include RECC and recd of Rizhao, MCFC of Masteel, etc.