启发式算法热轧机铝英文文献和中文翻译
constraints on the solution. Some must absolutely be
satisfied (hard constraints), while others can be relaxed by
adding penalties to the objective (soft constraints, prefer-
ences). The goal is to find a good compromise among these
conflicting objectives, while satisfying hard constraints.
The following Section 2 describes the problem under
study. Then, a short literature review is presented in Section
3, followed by a description of our heuristic algorithm in
Section 4. Numerical results are reported in Section 5.
Finally, the conclusion is presented in Section 6.
2. Problem description
In a standard rolling plant, ingots are casted in the foundry,
rolled into coils on the hot line and then rolled at room
temperature on the cold line. The hot line contains two main
machine centres: one with the homogenizing furnaces and the
other with the mill, in that order. They are described as follows:
2.1. Homogenizing furnaces
The goal of homogenization is to thermically treat ingots to
obtain desired mechanical properties and to have them at the
right temperature for the hot rolling operation that follows.
The heating time varies a lot and can take between 10 and
50 h, depending on the homogenization code and furnace
type. Each ingot has its own code and all codes in a batch
must be compatible. The code with the longest duration
determines the batch code and the heating time. Although
this is not ideal, ingots can also be kept longer in the furnace
as long as a predefined maximum time associated with each
上一篇：注塑成模具英文文献和中文翻译
下一篇：桥梁沥青塞接头英文文献和中文翻译