Cradle to Consumer
Identity ID
070513fd-f966-42a2-bc2e-4a553cc70a5d
Materials
Associated ID
fffdf406-d184-4b53-a627-bfd6d76aef2b
Included activities starts
Included activities ends
Description
This is a market dataset. Each market represents the consumption mix of products within a specific geographic region, accounting for transportation to consumers and associated losses during this process. This activity represents the supply of silicon steel coils in China to the steel manufacturing consumption activities. The data are based on China Customs statistics, China Statistical Yearbook, and China Iron and Steel Industry Yearbook.
Activity Description
The production process of hot-rolled coils includes stages such as billet preheating, roughing, intermediate rolling, and finishing rolling, encompassing energy consumption, material consumption, waste treatment, and environmental emissions associated with the production process.
Process Description
Hot-rolled coil is a steel product produced through the hot-rolling process, in which preheated billets are rolled into flat plates of a certain thickness at high temperature. The main characteristics of this steel include excellent ductility and toughness, making it easy to form and process in industrial applications. Silicon steel, also known as electrical steel, is a type of steel containing silicon (Si), typically with a silicon content of 1.0–4.5% and a carbon content less than 0. 0.08%, it can be divided into two major categories: grain-oriented silicon steel and non-oriented silicon steel. Silicon steel hot-rolled coils are produced through a hot-rolling process, which involves heating the steel billet and then rolling it at high temperature to achieve the desired thickness and width. Silicon steel cold-reduced hard coils, also known as hard-rolled coils, are a special type of cold-rolled steel mainly used in electromagnetic applications such as the manufacturing of transformers and motors. This type of steel typically has a silicon content between 2% and 4%. The addition of silicon significantly enhances the material's electromagnetic properties, particularly by reducing eddy current losses and increasing electrical resistivity, which is crucial for improving the efficiency and performance of electrical equipment.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The hot rolling process involves heating the metal billet produced from the converter to its plastic deformation temperature at high temperature, typically above 1000 degrees Celsius. The heated billet is then continuously rolled through a series of rolling mill stands. Initial rolling adjusts the billet's width and thickness through roll gap settings, while subsequent intermediate and finishing rolling further refine the dimensions and surface quality of the resulting coil. The entire rolling process can be subdivided into stages such as roughing, intermediate rolling, and finishing rolling, ensuring the final coil achieves the desired mechanical properties and surface finish.