Repaired continuous casting roller axial additive preparation method
A continuous casting roll and axial technology, which is applied in the field of axial additive preparation of continuous casting roll repair, can solve problems such as end face deformation, low repair yield, and bearing grinding failure, so as to increase the number of repairable times, improve repair efficiency, The effect of reducing repair costs
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[0025] A preparation method for repairing the axial direction of a continuous casting roll includes the following steps:
[0026] Step 1. Turning the roll surface: Combining the wear of the roll surface, turn the roll surface of the continuous casting roll to a certain size on one side, and the size of the roll surface is 2mm~3mm to remove the corrosion fatigue layer of the continuous casting roll;
[0027] Step 2. Turning the end face: Combining the damage of the two axial end faces of the continuous casting roll, turning each end face to a certain size, and the end face turning size is 3mm~5mm;
[0028] Step 3. Welding the patch: Spot welding the patch on the two axial end faces of the continuous casting roll after turning. The patch and the end face of the continuous casting roll are welded together through a number of welding points at equal intervals on the roll surface. When the distance between the solder joints is 60°, the total number of solder joints is 6, and when the dist...
Example Embodiment
[0033] Example 1
[0034] A preparation method for repairing the axial direction of the continuous casting roll includes the following steps:
[0035] Step 1: Single side turning size of the roll surface is 2mm;
[0036] Step 2: Turning dimensions of the two end faces are both 3mm;
[0037] Step 3: When the interval between solder joints is 90°, the total number of solder joints is 4, the inner diameter of the ring patch is 10mm smaller than the outer diameter, and the thickness of the ring patch is 5mm;
[0038] In step 4: the thickness of single side surfacing of the roll surface is 4mm, the current is 290A when submerged arc surfacing of the wear-resistant alloy layer on the whole roll surface of the continuous casting roll, the DC polarity positive connection voltage is 29V, and the welding speed is 140mm / min.
Example Embodiment
[0039] Example 2
[0040] The process steps in this embodiment are the same as those in embodiment 1, and the difference from embodiment 1 is:
[0041] Step 1: Single side turning size of the roll surface is 3mm;
[0042] Step 2: Turning dimensions of both end faces are 5mm;
[0043] Step 3: When the distance between solder joints is 60°, the total number of solder joints is 6, the inner diameter of the ring patch is 12mm smaller than the outer diameter, and the thickness of the ring patch is 7mm;
[0044] In step 4: the thickness of single side surfacing of the roll surface is 5mm, the current is 320A when the wear-resistant alloy layer is submerged arc surfacing the whole roll surface of the continuous casting roll, the DC polarity positive connection voltage is 32V, and the welding speed is 220mm / min.
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