Method for rolling edge-crack-free magnesium alloy plate by low-temperature large-pass rolling reduction
A magnesium alloy, reduction technology, applied in metal rolling, metal rolling, temperature control and other directions, can solve problems such as low efficiency and edge cracks, reduce energy consumption, suppress edge cracks, and save rolling time Effect
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Embodiment 1
[0020] Example 1 Preparation of AZ31 magnesium alloy sheet by online heating and rolling with 42.2% pass reduction
[0021] Step 1) Install the AZ31 magnesium alloy plate with a size of 600*105*5 (unit: mm) on the rolling mill, clamp the plate through the chucks at both ends, and prepare for rolling. Among them, the rolling temperature is set at 150°C, the rolling roll temperature is 190°C, and the tension at the left and right ends is 2kN; the rolling mill is a high-rigidity hydraulic tension four-high warm rolling reversible experimental rolling mill, and the rolling mill has four rollers , which are support rolls with a diameter of 320mm and work rolls with a diameter of 120mm.
[0022] Step 2): The installed magnesium alloy plate is automatically heated to a set temperature of 150°C by electric current, and the temperature is measured by a contact thermocouple. The heating time to the set temperature is about 45s.
[0023] Step 3): When the magnesium alloy sheet is heated...
example 4
[0028] Example 4 ZM21 magnesium alloy plate prepared by online heating and rolling with 42.4% reduction
[0029] Step 1): Install the ZM21 magnesium alloy plate with a size of 600*105*5 (unit: mm) on the rolling mill, clamp the plate through the chucks at both ends, and prepare for rolling. Among them, the rolling temperature is set at 150°C, the rolling roll temperature is 190°C, and the tension at the left and right ends is 2kN; the rolling mill is a high-rigidity hydraulic tension four-high warm rolling reversible experimental rolling mill, and the rolling mill has four rollers , which are support rolls with a diameter of 320mm and work rolls with a diameter of 120mm.
[0030] Step 2): The installed magnesium alloy plate is automatically heated to a set temperature of 150°C by electric current, and the temperature is measured by a contact thermocouple. The heating time to the set temperature is about 45s.
[0031] Step 3): When the magnesium alloy sheet is heated to the se...
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