Repairing method of screw blade of expansion dryer
A technology of expansion dryer and spiral blade, which is applied in the direction of manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problems of large heat input in electric welding, loss of repair, and non-wearable surface, so as to achieve high maintenance efficiency and low thermal impact The effect of small area and cost saving
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Example Embodiment
[0027] Example 1
[0028] In this embodiment, the chemical composition of the spiral blade of the expansion dryer is as follows: C0.02, Mn2.0, Cr18.00, Ni10.00, Ti0.15, Fe more. The repair method includes the following steps:
[0029] (1) Determine the repair plan according to the damage degree of the spiral blade of the expansion dryer;
[0030] (2) Remove the fatigue layer of the worn spiral blade mating surface;
[0031] (3) Compound process additive quenching;
[0032] (4) The surfacing layer removes stress;
[0033] (5) Finishing.
[0034] In step (1), the spiral blade is disassembled from the main shaft, and after cleaning with a cleaning agent, the dimensional accuracy of cracks, surface defects, and the relevant inner holes are inspected to determine the repair plan.
[0035] In step (2), the spiral blade is installed on a lathe, and the worn outer diameter mating surface is machined away to expose fresh metal, and then the surface coloring flaw detection is performed until there i...
Example Embodiment
[0040] Example 2
[0041] In this embodiment, the chemical composition of the spiral blade of the expansion dryer is as follows: C0.01, Mn1.5, Cr17.00, Ni9.00, Ti0.1, Fe and its repair method includes the following steps:
[0042] (1) Determine the repair plan according to the damage degree of the spiral blade of the expansion dryer;
[0043] (2) Remove the fatigue layer of the worn spiral blade mating surface;
[0044] (3) Compound process additive quenching;
[0045] (4) The surfacing layer removes stress;
[0046] (5) Finishing.
[0047] In step (1), the spiral blade is disassembled from the main shaft, and after cleaning with a cleaning agent, the dimensional accuracy of cracks, surface defects, and the relevant inner holes are inspected to determine the repair plan.
[0048] In step (2), the spiral blade is installed on a lathe, and the worn outer diameter mating surface is machined away to expose fresh metal, and then the surface coloring flaw detection is performed until there is no...
Example Embodiment
[0053] Example 3
[0054] In this embodiment, the chemical composition of the spiral blade of the expansion dryer is as follows: C0.03, Mn2.2, Cr18.50, Ni11.70, Ti0.23, Fe, and the repair method includes the following steps:
[0055] (1) Determine the repair plan according to the damage degree of the spiral blade of the expansion dryer;
[0056] (2) Remove the fatigue layer of the worn spiral blade mating surface;
[0057] (3) Compound process additive quenching;
[0058] (4) The surfacing layer removes stress;
[0059] (5) Finishing.
[0060] In step (1), the spiral blade is disassembled from the main shaft, and after cleaning with a cleaning agent, the dimensional accuracy of cracks, surface defects, and the relevant inner holes are inspected to determine the repair plan.
[0061] In step (2), the spiral blade is installed on a lathe, and the worn outer diameter mating surface is machined away to expose fresh metal, and then the surface coloring flaw detection is performed until there is...
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