The metallurgical industry is a typical heavy industry field. The production process involves complex working conditions such as high-temperature smelting and heavy-load material lifting. Crane rails play an indispensable role in this process. Compared with other industries, metallurgical operations have put forward more stringent requirements on the performance and reliability of rails.
The molten steel, billets and other materials hoisted by the metallurgical industry are extremely hot and weigh tens or even hundreds of tons. The crane rails must not only withstand huge vertical loads, but also resist the erosion of high-temperature radiation and slag splash. In the steelmaking workshop, when the crane lifts the ladle filled with molten steel, the rails must remain stable to prevent the deformation of the rail surface and the decline of performance due to high temperature, and to avoid safety accidents caused by the instability of the crane operation.
For this reason, the metallurgical industry mostly uses QU series crane-specific rails. Its high wear resistance and high strength can effectively cope with frequent heavy-load rolling; the special head shape design makes the wheel and rail contact more closely, dispersing the load while reducing wear. In addition, special rails that are resistant to high temperatures and corrosion will be used. Special heat treatment processes will be used to improve the high-temperature strength and oxidation resistance of the rails to ensure long-term and stable service in harsh environments.
| Rail Type | SIZE(mm) | theoretical weight | |||||||||
| height | bottom width | head width | waist depth | ||||||||
| Crane rail | QU70 | 120 | 120 | 70 | 28 | 52.8 | |||||
| QU80 | 130 | 130 | 80 | 32 | 63.69 | ||||||
| QU100 | 150 | 150 | 100 | 38 | 88.96 | ||||||
| QU120 | 170 | 170 | 120 | 44 | 118.1 | ||||||
The installation of rails is also particularly critical in metallurgical environments. Special insulation and fire prevention measures are required, such as laying an insulation layer under the rail to prevent high temperatures from being transmitted to the rail beams; high-temperature resistant fasteners are used at rail connections to avoid failure of connectors due to high temperatures. At the same time, the installation accuracy of the rails is strictly controlled to ensure the smooth operation of the crane and reduce vibration damage to the rails.
Daily maintenance should not be ignored either. Since the high temperature, dust, corrosive gases, etc. generated by metallurgical operations will accelerate the aging of rails, it is necessary to increase the frequency of inspections, promptly clean up steel slag, iron filings and other debris attached to the rail surface, and quickly repair or replace worn and deformed rails to ensure the continuous and efficient operation of the crane and safeguard the safety and stability of metallurgical production.