Continuous-casting and continuous-rolling integrating device and process

Abstract

The invention relates to a continuous-casting and continuous-rolling integrating device and a continuous-casting and continuous-rolling integrating process. An ejection roller way in an ejection roller way ejection area and a transition roller way are linearly and continuously jointed and a moveable baffle plate which can automatically lift is arranged at the joint; the ejection roller way and a heat conveying roller way are jointed through a casting blank separating device with a heat-preserving device; a set of blank-separating collecting device which can move bi-directionally is jointly used between a cooling bed and the transition roller way as well as between the transition roller way and the heat conveying roller way and can drive casting blanks to bi-directionally move between the cooling bed and the transition roller way; a heater is arranged on the heat conveying roller way; the tail end of the heat conveying roller way is jointed with a rolling machine. According to heat conveying and rolling requirements, the casting blanks are selected, separated and collected, according to casting blank temperature data which is detected in real time, the heating temperature and the heating time are automatically adjusted, the casting blanks are heated to the temperature meeting the rolling requirement and are fed into the rolling machine to be rolled, the metal yield can be increased, the continuous-casting blank quality can be improved, the energy consumption can be reduced, the utilization efficiency, the maintenance rate and the production efficiency of equipment are improved, and the investment cost and the operation cost are reduced.

Description

technical field [0001] The invention belongs to a new continuous casting and rolling integrated device and process, and mainly relates to the continuous casting and rolling process and related supporting equipment. Background technique [0002] There are two traditional continuous casting and rolling processes. One is that the slab is directly cooled off the line, and when production needs, the slab is sent to a gas heating furnace for heating and then rolled; the other is that the hot slab is directly sent to the heating furnace through the roller table, and then rolled. The above two processes all have the following disadvantages: 1. The heating gas is a combustible gas, which has potential safety hazards. 2. The heating furnace needs to be preheated, and the energy consumption is high. 3. Combustion produces a large amount of carbon dioxide, which is not conducive to environmental protection. 4. The billet heating time is long and the heating efficiency is low. 5. The...

AI Technical Summary

Problems solved by technology

Both of the above two processes have the following disadvantages: 1. The heating gas is a combustible gas, which has potential safety hazards

2. The heating furnace needs to be preheated, and the energy consumption is high

3. Combustion produces a large amount of carbon dioxide, which is not conducive to environmental protection

4. The billet heating time is long and the heating efficiency is low

5. The slab oxidation rate is high, and the slab metal yield is low

6. In case of failure, production must be stopped for maintenance, and maintenance is difficult

7. The gas generator and heating furnace are large in size, occupy a large area, and require high investment

The invention has the following problems: the slab is cut and directly enters the heating furnace, which cannot be solved when there are failures such as continuous cutting of the slab during production; the traverse device is a single-flow conveying roller table, and the slab feeding speed is slow, which greatly restricts production efficiency

The slab that needs to be cooled off-line must be heated by the heating furnace before it can be off-line, which greatly increases energy consumption; there are too many equipments between the heating furnace and the rolling mill, the distance is too long and there is no insulation measure, the heated slab loses heat quickly; Must be equipped with high-speed continuous casting machine and low-temperature rolling mill, high investment

[0004] At the same time, both of the above two inventions have the following problems: the unloading cooling bed and the loading table are separated from each other, and the cold billet needs to be transported to the loading table through a straddle car, a crane or other means of transportation, and there are too many circulation processes to increase the transportation steps. It is impossible to improve production efficiency; secondly, the number of required heaters is too large. The invention patent with the publication number CN101693254A requires two separate heating systems, and the invention patent with the publication number CN102764762A requires a heating system for each flow, which requires a huge initial investment; heating The device cannot be replaced and repaired online, and production must be shut down in case of failure; the entire heating production line is not fully insulated, and the heat loss of the slab is large; the heating temperature and time cannot be adjusted and monitored in real time, and the temperature of the slab cannot be controlled, which cannot meet the needs of rolling

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