Garbage incinerator fire grate segment with high-temperature-resistant and abrasion-resistant coating on surface and preparation of garbage incinerator fire grate segment
A waste incinerator and grate technology, which is applied in the direction of incinerators, combustion methods, combustion types, etc., can solve the problems of short service life of grate and affect the long-term stable use of incinerators, and achieve high coating bonding strength and improved The effect of service cycle and low cost
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[0034] As mentioned above, the surface of the waste incinerator grate in contact with the garbage is severely abrasive, and the service life of the domestic waste incinerator grate is short (7-10 months), which affects the long-term stable use of the incinerator. It is urgent to pass the design, Improvements in materials, processes, etc. increase the service life of the grate. In view of this, the inventor has conducted a lot of research on the anti-abrasion technology of the waste incinerator grate.
[0035] The inventor researched and designed and found that the material of the grate sheet is 1Cr18Ni9Ti, which is formed by liquid die forging; prepare Ti+C+Ni+Mo=TiCNiMo self-spreading powder material according to the principle of self-spreading reaction, mix evenly, add water glass and mix evenly, and evenly coat on The inner surface of the liquid forging die, after drying, pour 1Cr18Ni9Ti molten steel according to the conventional liquid forging process, and the molten steel...
Embodiment 1
[0071] (1) 250 mesh C powder and Ti powder are prepared by atomic ratio 1:1, add 5wt% Ni powder (200 mesh) and 5wt% Mo powder (200 mesh) of the total weight of C powder and Ti powder, ball mill 8- 9 hours, TiCNiMo self-propagating mixed powder;
[0072] (2) in the TiCNiMo self-propagating mixed powder, mix into appropriate (20wt% of TiCNiMo gross weight) water glass and mix, form TiCNiMo self-propagating preset coating material;
[0073] (3) Apply the TiCNiMo self-propagating preset coating material evenly on the inner surface of the grate sheet liquid forging die corresponding to the common abrasive area of the grate sheet, with a thickness of 3 ± 0.2mm to form a TiCNiMo self-propagating preset coating;
[0074] (4) For parts with severe abrasion, in order to improve local corrosion resistance, the above-mentioned mixed materials are not applied to the parts, and uniformly mixed Ti+C+Ni+Mo powder (that is, TiCNiMo self-propagating mixed powder) is used before pouring molten...
Embodiment 2
[0079] (1) 250 mesh C powder and Ti powder are prepared by atomic ratio 1:1, add 5wt% Ni powder (200 mesh) and 5wt% Mo powder (200 mesh) of the total weight of C powder and Ti powder, ball mill 8- 9 hours, TiCNiMo self-propagating mixed powder;
[0080] (2) in the TiCNiMo self-propagating mixed powder, mix into appropriate (15wt% of TiCNiMo gross weight) water glass and mix, form TiCNiMo self-propagating preset coating material;
[0081] (3) Apply the TiCNiMo self-propagating preset coating material evenly on the inner surface of the grate sheet liquid forging die corresponding to the common abrasive area of the grate sheet, with a thickness of 2 ± 0.2mm to form a TiCNiMo self-propagating preset coating;
[0082] (4) For parts with severe abrasion, in order to improve local corrosion resistance, the above-mentioned mixed materials are not applied to the parts, and uniformly mixed Ti+C+Ni+Mo powder (that is, TiCNiMo self-propagating mixed powder) is used before pouring molten...
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