Iron-based rare earth high-chromium wear-resistant welded steel ash mixer blade
A mixer and ash technology, which is applied in mixer accessories, mixers, dissolution and other directions, can solve the problems of corrosion resistance, erosion resistance and wear resistance, frequent replacement of ash mixer blades, short service life, etc., and achieves low cost. , Remarkable effect of reducing consumption and long service life
Inactive Publication Date: 2010-07-14
包头市鹿电高新材料有限责任公司
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Problems solved by technology
[0002] The blades of the ash mixer are the key vulnerable parts. At present, the blades of the general ash mixer in domestic thermal power plants are made of traditional 16Mn plates. Connection assembly, 16Mn plate material is low carbon, low manganese, excellent welding performance, but poor corrosion resistance, erosion resistance, wear resistance, short service life, resulting in frequent replacement of ash mixer blades, labor-intensive, time-consuming The strength is high, the cost is high, and the shutdown loss is large, so it brings very large economic losses to the enterprises that use the ash mixer blades
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Embodiment 1
[0015] The blade structure of the ash slag mixer of the present invention is complex, forming a special-shaped structure, adopting lost foam casting, one-time forming, and the metallographic structure in the as-cast state is a two-phase structure in which austenite, ferrite, and carbide coexist. Including: C: 0.3%, Cr: 14.5%, Ni: 3.5%, Si: 0.6%, Mn: 0.60%, S≤0.025, P≤0.025;
[0016] The invention adopts an innovative steel type (without molybdenum and vanadium in the composition), so that the metallographic structure of the ash mixer blade obtains a dual-phase structure in which austenite, ferrite, and carbide coexist, and 0.2% Baotou is added to the ladle when it is discharged 1 # Rare earth ferrosilicon alloy processing, the rest is iron and impurities usually formed under smelting conditions.
[0017] The smelting is smelting in a non-iron core non-vacuum intermediate frequency induction furnace, using high-quality furnace materials and alloy materials, low temperature dep...
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The invention relates to an iron-based rare earth high-chromium wear-resistant welded steel ash mixer blade used for ash mixers. The steel material of the blade includes low carbon, high chromium and low nickel, and the formula of rare earth is added; and the metallographic structure of the steel material is the dual-phase structure where austenite, ferrite and carbide coexist under as cast condition. During discharge, 0.02-0.2% of 1# Baotou rare earth ferrosilicon alloy is added in the ladle for treatment and the rest are iron and impurities generally formed under smelting condition. The blade has pure steel, refined and spheroidized grains, compact structure, excellent corrosion resistance, scouring resistance and wear resistance and long service life which is improved by 3 times compared with the service life of the original pieces, simultaneously saves energy, reduces consumption, lowers the unit cost of the steel, increases the economic benefits of the enterprises, saves time and power, is low in cost and high in benefits and ensures obvious effects on energy saving and consumption reduction in the enterprises, and the change times of the blade is decreased in the enterprises.
Description
technical field [0001] The invention relates to an iron-based rare earth high chromium wear-resistant and weldable steel cinder mixer blade, especially a cinder mixer blade that is used for stress-bearing parts of the cinder mixer, and the material is corrosion-resistant, scour-resistant, wear-resistant and weldable. . Background technique [0002] The blades of the ash mixer are the key vulnerable parts. At present, the blades of the general ash mixer in domestic thermal power plants are made of traditional 16Mn plates. Connection assembly, 16Mn plate material is low carbon, low manganese, excellent welding performance, but poor corrosion resistance, erosion resistance, wear resistance, short service life, resulting in frequent replacement of ash mixer blades, labor-intensive, time-consuming The strength is high, the cost is high, and the shutdown loss is large, so it brings very large economic losses to the enterprises that use the ash mixer blades. Contents of the inve...
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IPC IPC(8): B01F15/00
Inventor 寇佳楠寇生瑞寇江民寇国珍崔燕王微曹巨成
Owner 包头市鹿电高新材料有限责任公司