Column nail roller surface repairing method of novel high-pressure roller mill
A technology of high-pressure roller mills and repair methods, which is applied in the direction of welding media, arc welding equipment, welding/cutting media/materials, etc., can solve the problems of lack of effective repair technology, reduced equipment operation rate, and reduced roller surface life. The effect of strong bonding, short time required, and improved service life
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[0031] Example 1
[0032] For various reasons, on the surface of the roller sleeve of the high-pressure roller mill of the stud roller surface, the cemented carbide studs on the surface will fall off with the substrate, and the thickness of the detachment is basically consistent with the length of the stud. Once this kind of peeling occurs, the roller surface must be repaired, otherwise the equipment will be unusable, and the entire roller sleeve will eventually be replaced.
[0033] A method for repairing the roller surface of a stud roller surface of a high-pressure roller mill, and the steps are as follows:
[0034] (1) Select the surface of the high-pressure roller mill 6 with pits on the surface to be repaired, and clean the pits. The pits are cleaned by first using an air cutting gun to remove the peeling surface, and then use a grinder to align the bottom surface and the bottom surface 1cm from the edge. Edge polishing, slag removal and cleaning;
[0035] (2) A 3mm thick conne...
Example Embodiment
[0041] Example 2
[0042] A method for repairing the roller surface of a stud roller surface of a high-pressure roller mill, and the steps are as follows:
[0043] (1) Select the roll surface of the high pressure roller mill with pits on the surface to be repaired, and clean the pits. The pits are cleaned by using an air cutting gun to remove the peeling surface, and then use a grinder to adjust the bottom surface and the edge to 1cm outside the edge Polishing, slag removal and cleaning;
[0044] (2) A layer of 3mm thick connection layer is surfacing welded on the bottom of the pit. MIG welding is used for surfacing. The composition and mass fraction of the welding wire material are: carbon content of 2%, chromium content of 23%, and nickel content of 10%. The balance is iron; the wire diameter is 1.2mm; the current is 125A; the voltage is 22V; the welding speed is 15cm / min;
[0045] (3) Prepare cemented carbide studs covered with stainless steel sleeves. The materials of the cemente...
Example Embodiment
[0050] Example 3
[0051] A method for repairing the roller surface of a stud roller surface of a high-pressure roller mill, and the steps are as follows:
[0052] (1) Select the roll surface of the high pressure roller mill with pits on the surface to be repaired, and clean the pits. The pits are cleaned by using an air cutting gun to remove the peeling surface, and then use a grinder to adjust the bottom surface and the edge to 1cm outside the edge Polishing, slag removal and cleaning;
[0053] (2) A 3mm thick connecting layer is surfacing welded on the bottom of the pit. MIG welding is used for surfacing. The composition and mass fraction of the welding wire material are: carbon content of 2%, chromium content of 20%, and nickel content of 12%. The balance is iron; the wire diameter is 1.2mm; the current is 125A; the voltage is 24V; the welding speed is 15cm / min;
[0054] (3) Prepare cemented carbide studs covered with stainless steel sleeves. The materials of the cemented carbide...
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