304 stainless steel strip classification
①Using "stainless steel strip/coil" as raw material, it is rolled into materials by cold rolling mill at normal temperature. Conventional thickness <0.1mm~3mm>, width <100mm~2000mm>;
②["Cold-rolled steel strip/coil"] has the advantages of smooth and smooth surface, high dimensional accuracy and good mechanical properties. Most of the products are in coils and can be processed into coated steel plates;
③Cold-rolled stainless steel strip/coil production process: ⒈pickling → ⒉ rolling at room temperature → ⒊ process lubrication → ⒋ annealing → ⒌ flattening → ⒍ precision cutting → ⒎ packaging → ⒏ reaches the customer.
hot rolled strip
①The hot rolling mill is used to make strip steel with a thickness of 1.80mm-6.00mm and a width of 50mm-1200mm.
②[Hot-rolled strip/sheet] has the advantages of low hardness, easy processing, and good ductility.
③Hot-rolled stainless steel strip/coil production process: ⒈pickling → ⒉ high temperature rolling → ⒊ process lubrication → ⒋ annealing → ⒌ flattening → ⒍ fine cutting → ⒎ packaging → ⒏ reaches the customer.
difference between hot and cold
① Cold-rolled steel strip has good strength and yield-to-strength ratio, while hot-rolled steel strip has good ductility and toughness.
②The thickness of cold-rolled steel strip is ultra-thin, while the thickness of hot-rolled steel strip is larger.
③The surface quality, appearance and dimensional accuracy of cold-rolled steel strips are better than those of hot-rolled plates. Silicon steel thin strip Grain-oriented silicon steel strip is also called cold-rolled silicon steel strip for the telecommunications industry. It is used to manufacture cores of various power transformers, pulse transformers, magnetic amplifiers, converters, etc. with operating frequencies above 400Hz. It has a grain-oriented structure. Silicon steel thin strip with a thickness not greater than 0.20mm.
Structural steel strip delivery status: delivered in heat treatment (annealed, normalized, tempered after normalizing, high temperature tempered) state. Steel strips can be delivered without heat treatment if all properties meet the standard requirements. Ordinary drawn steel strips are allowed to be delivered without heat treatment. Cold-rolled steel strips are delivered in a heat-treated (annealed, normalized, normalized and tempered) state and should be delivered flat.
Usage: Widely used in the automobile industry, aviation industry and other sectors, with large usage. Cold-rolled steel strip for deep drawing is a low-carbon high-quality carbon structural steel cold-rolled steel strip used for deep-drawing complex drawn parts.
Delivery status: It needs to be delivered after heat treatment and smoothing. The surface of the steel strip as supplied should be rough or bright.
Usage: Widely used in automobiles, tractors and other industries.