Wire Rod Rolling Process Analysis

 

Wire Rod Rolling Process Analysis


According to the rolling speed, there are two types of wire rod rolling mills, one is a normal rolling mill, and the other one is a high-speed rolling mill, compared with the normal rolling mill, the high-speed rolling mill requires higher technology for sure, the wire rod rolling, there are some matters you have to pay attention to, the wire rod has the following characteristics, small cut surface, very long, requires high accuracy and surface quality, the main rolling process are:
    
Billet:

The wire rod billets are mainly continuous small billets, around 120-150mm, with lengths is 6-12m, during the operation field, visual inspection, Electromagnetic induction detection, ultrasonic flaw detection, etc, those methods are often used to detect the quality of billet.
Heating:

Normally using a walking beam furnace, the heating with less oxidation and decarburization, the billet would not likely to be twisted, the billet of a modern high-speed rolling mill is big and long, and this requires a very even heating temperature. 
Rolling:

The rolling mill should be very accurate because the cutting surface of the wire rod is sole, it’s a very long process and distance from the billet to the final product, more rolling mill stands are required, normally needs 21-28 stands, divided into roughing mill, intermediate mill, finishing mill, weikeduo’s high-speed rolling mill can reach speed higher than 100m/s.   
Cooling:

The rolling speed right now is very high, which makes the temperature high and not easy to cool down, to ensure the quality of the final product, a loosened coil is normally used for cooling, according to the certain usage of the final product, normally people Pearlite controlled cooling and Martensite controlled cooling.     

There are more quality requirements for wire rods, including, surface, accuracy, chemical, mechanical, coil weight, package, and marks.

Wire Rod Rolling Process


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