The lamination is to pass between two hardened steel rollers that revolve at the same speed but in opposite directions. This reduces the cross section and increases its length. That is why product quality will depend greatly on the quality of steel used. This process takes advantage of the ductility of steel, the greater the higher is its temperature, can be performed hot or cold: cold rolling. was performed at room temperature.
Reduced thickness of the sheet, it gives strength properties, hardness and modify the microstructure. goes through a washing process electrolytic which is to remove any remaining soluble oil on the blade, or by annealing furnaces. This resets the properties of malleability, punched modified by the cold. The tempering process gives the metallurgical properties of hardness, strength and surface roughness. In the process of tensionlevelling have resulted in a slim and flawless product. Some applications are:
• Applications in machinery and equipment.
• Profiles and pipe.
• Drums and containers.
hot rolling. The temperature is usually 1000 ° C
red hot is heated in a pit called thermo-diffusion furnace, where it is heated. These are heated to provide ductility and malleability make it easier for area reduction.
After heating the ingots are passed between a series of metal rollers arranged in pairs that crush. The first pair of roller train is known as grinding or removal of fences. After the rolling mills rough and finish trains reduce it to the desired section. Its main applications are:
-Embossed extraprofundos deep.
-pipe for different uses high and medium resistance.
-Automotive to unexposed.
The number of mills, such as the shape of the rollers depend on the product to be obtained. But there will always be one or more roughing train and cooling sections.
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