我们都知道热轧钢板含碳量可比冷轧钢板略高些。在成份相持不大的情况下密度是一样的。热轧钢板分为结构钢、低碳钢、焊瓶钢，热轧钢板硬度低，加工容易，延展性能好。冷轧板硬度高，加工相对困难些，但是不易变形，强度较高。
We all know that hot rolled steel plate carbon content slightly higher than cold rolled steel sheet. In the case of ingredients is locked density is the same. Hot rolled steel plate is divided into structural steel, mild steel, welding steel, hot rolled steel plate hardness is low, easy processing, good extensibility. Manufacture high hardness, processing is relatively difficult, but it is not easy deformation, high strength.
　　热轧钢板强度相对较低,表面质量差点，但塑性好，一般为中厚板、冷轧板、强度高、硬度高、表面光洁度高、一般为薄板，可以作为冲压用板。
Hot rolled steel plate strength is relatively low, surface quality, but good plasticity, generally for the medium plate, manufacture, high strength, high hardness, high surface finish, generally for sheet, can be used as a drawing board.
　　热轧钢板和冷轧钢板加工工艺不同。热轧钢板是在高温下轧制而成，冷轧是在常温下炸至。一般来说，冷轧钢板具有更好的强度，热轧钢板具有更好的延性。冷轧的一般厚度比较小，热轧的可以有较大的厚度。冷轧钢板的表面质量、外观、尺寸精度均优于热轧板。热轧钢板，机械性能远不及冷加工，也次于锻造加工，但有较好的韧性和延展性。

Hot rolled steel plate and cold rolled steel plate processing technology is different. Hot rolled steel plate is rolled at high temperature, cold rolling is Fried to at room temperature. Generally speaking, cold rolled steel has better strength, hot rolled steel plate has better ductility. The relatively small average thickness of cold rolled and hot rolled can have bigger thickness. Cold rolled steel sheet surface quality, appearance, dimension precision are better than that of the hot rolled plate. Hot rolled steel plate, the mechanical properties of far less cold, also is inferior to the forging processing, but has good toughness and ductility.
　　冷轧钢板由于有一定程度的加工硬化，韧性低，但能达到较好的屈强比，用来冷弯弹簧片等零件，同时由于屈服点较靠近抗拉强度，所以使用过程中对危险没有预见性，在载荷超过许用载荷时容易发生事故。
Cold rolled steel sheet due to a certain degree of strain hardening, toughness is low, but can reach better showed, used for cold bending spring pieces and parts, at the same time due to the yield point is close to the tensile strength, so no foresight to danger, in use process in the load exceeds allowable load are prone to accidents.
　　1、冷板采用冷扎加工表面无氧化皮，质量好。热轧钢板采用热扎加工表面有氧化皮，板厚有下差。
1, cold plate using cold processing surface without scale, good quality. Hot rolled steel plate, surface of oxide skin are processed using the hot rolled plate thickness with the poor.
　　2、热轧钢板韧性和表面平整性差，价格较低，而冷轧板的伸展性好，有韧性，但是价格较贵。
2, hot rolled steel toughness, surface smoothness is poor, the price is low, and the extension of manufacture and resilient, but the price is more expensive.
　　3、轧制分为冷轧和热轧钢板，以再结晶温度为区分点。
3, rolling into cold rolled and hot rolled steel plate, distinguish between point for recrystallization temperature.
　　4、冷轧：冷轧一般用于生产带材，其轧速较高。
4, cold-rolled: generally used in the production of strip cold rolling, the rolling speed is higher.
　　5、不电镀的热扎钢板表面成黑褐色，不电镀的冷扎板表面是灰色，电镀后可从表面的光滑程度来区分，冷扎板的光滑度高于热扎钢板。
5, plating surface of hot rolled steel plate into a dark brown, not plated cold plate surface is gray, from the smooth degree of surface after plating will distinguish, lengzha board smoothness is higher than that of hot rolled steel plate.
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Customer satisfaction is our affirmation, welcome you to come to my company's products of choose and buy, we always thought that you to provide products as its own duty and always insisted to do. All are welcome.