In fact, before talking about uses, it is not difficult for everyone to recall the specific phenomena in life. It is not difficult to imagine where the plates and strips went after being cold rolled. We can divide them into categories according to their extensive use. Of course, the quality and requirements of each category Different, of course, cold-rolled plates must be related to coating. Here we focus on coating-based (bare) plates:
1 Cold rolled steel plate for construction
This part of the steel plate is a product that has emerged in recent years. Due to its advantages such as fast construction, beautiful appearance, and long durability during the construction and installation process, its application in these industries has been rapidly promoted. However, relatively speaking, these products are the lowest-end cold-rolled products. , generally, the thickness of these products is between 0.7-1.6mm, and the width of the panels is based on the construction requirements. In fact, in order to facilitate installation and transportation, the country has successively introduced construction industry selection standards for these products in recent years. In the most common The width of the profiled steel plate after expansion is basically below 1250mm. This actually provides guidance on the selection of rolling mills. Generally speaking, the rolling mill for cold-rolled products for general construction can be selected below 1500mm, which can meet the needs of most markets. The requirements on plate shape are not high and can basically be solved with a 4-high rolling mill.
2 automotive panels
This part of the steel plate is a high-profit product that all major steel mills want to participate in. However, the demand and production of automobile plates have their own difficulties. This difficulty does not necessarily refer to the cold rolling process, but can be pushed to steelmaking, hot rolling process, and rolling back. Fire, flattening and other processes, this part of the product is measured according to the size of the car on the market (car panel). As we all know, the width of the car is generally below 1700, so the width of this part of the product is basically positioned at 1700-2000mm wide rolling mill After Baosteel launched the 2230mm rolling mill, after years of product sales practice, the average sales width of the rolling mill's products was 1350mm, which fully demonstrated that Baosteel gradually reduced the width of the subsequent three cold rolling mills, from 1800 to - 1530-1420mm. As for the thickness, it is measured according to the use part, generally 0.8-2mm. It should be said that these steel plates require higher performance, strict plate shape, and high surface finish, so if you are targeting this part of the product, Don't just jump in if you don't have 50Y of spare cash, and you have to put a lot of effort into later research and development. Only the third generation can play with it.
3 boards for home appliances
The demand for panels for home appliances is on the rise, which explains why people's material lives have improved. There are many types of home appliances. Generally speaking, the requirements are becoming more and more stringent. Generally speaking, there are three types with greater demand, Q195--- -Q275 carbon structural steel cold-rolled thin steel plate, 08, 08FF, 10, 10F, high-quality carbon structural steel thin steel plate, and cold-rolled thin steel plate represented by 08AI for deep drawing. Among these plates, due to people's pursuit of Beautiful appearance, so the requirements for these steel plates, especially the 08Al series, are getting higher and higher, and even tend to be higher than automobile plates. The panels for refrigerators currently have a pursuit of 0.35, which should be the highest requirement. Others are used as exterior panels for air conditioners and washing machines. At present, the thickness is still about 1mm. Of course, there are also 2mm thick for panel + structure. As for the width, it is generally medium-wide steel according to the size of the material. In principle, rolling mills below 1000mm are more practical.
4 Other steel plates for daily use
5 Electrical Steel Plate
This part of the steel plate is relatively special and the output is not high. Currently, W Steel has independent development capabilities, but the oriented steel is 1.5-2 grades lower than Nippon Steel. Non-oriented steel plates can be produced by many factories. Since it is produced by a special rolling mill, I won't say much. .
