Iron-based self-fluxing alloy amorphous coating method adopting supersonic arc spraying

A technology of supersonic electric arc and self-fluxing alloy, which is applied in the field of material sheet cold rolling, can solve the problems of complex wastewater treatment process for chrome-plated cold rolling rolls, unaffordable small and medium-sized electroplating enterprises, high pollutant treatment costs, etc., and achieves a compact structure. , dense coating and good thermal stability

Inactive Publication Date: 2018-07-27
戴亚洲
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The wastewater treatment process of chrome-plated cold rolls is complex, difficult and costly,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] The cold roll substrate of the present invention is 9cr2mov, basic heat treatment to relieve stress, hardness hs95-99, the surface of the substrate is sprayed and cladding, the coating thickness is 50-100um, the coating thickness after polishing is 30-50um, and the surface hardness is hv850-1200. The roll diameter is 80~1200mm, and the length is 150~12000mm.

[0013] Supersonic arc spraying iron-based self-fluxing alloy amorphous coating method: 1) Degreasing the surface of cold roll, sandblasting the surface of cold roll, relative humidity above 80%, surface deoxidation, surface texture, rough surface of cold roll The degree is 0.4um-100um, the particle size of the powder in the supersonic arc spraying line is 4-100μm, the powder particle after arc supersonic spraying is 40-100nm, and the particle size after spraying is 20-60nm.

[0014] 2) Prepare the iron-based self-fluxing alloy as spray powder, and spray it on the surface of the cold roll workpiece by supersonic arc spr...

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Abstract

The invention relates to an iron-based self-fluxing alloy amorphous coating method adopting supersonic arc spraying. According to the method, an iron-based self-fluxing alloy is prepared into sprayingpowder, the spraying powder is sprayed to the surface of a cold roll workpiece by the adoption of the supersonic arc spraying mode, and the iron-based self-fluxing alloy comprises, by mass percentage, 5-11% of Cr, 3.0-5.0% of B, 2.0-5.5% of Si, 2-5% of C, 1-3% of W, 0.3-1% of Mo, 0.1-1% of Nb, 0.1-3% of Y, 1-5% of NaBH4 and K2WO4 and NaF, 0.5-2% of nano-silica, 1-6% of nano-titania and the balance Fe. The powder is mixed by a fluidized bed for 120 minutes and then mixed with large and small balls at a rotation speed of 200-260 revolutions per minute. A coating is completely amorphous, the coating is compact, the bonding strength with a substrate is high, the hardness is high, the corrosion resistance is high, the thermal stability of the coating is good, and the coating has excellent comprehensive properties of wear resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of cold rolling of material thin plates, and can make the surface of cold-rolled thin steel plates smoother and denser, and the bending strength is one-fifth higher than that of electroplated chrome. Background technique [0002] Cold-rolled steel strips are widely used in industries such as automobiles and home appliances, with an annual consumption of about 100 million tons and an output value of hundreds of billions to trillions of yuan. The surface of the steel plate looks flat, but it is not. The surface of high-quality cold-rolled strip steel plate has a large number of pits and bosses, so that when the coil is annealed and heat-treated, there must be gaps (gas channels) between the plates to prevent the plate from sticking and slipping, and it is convenient to stabilize in the subsequent furnace Stacking is also beneficial to the subsequent machining of steel plates because the uneven surface is easy...

Claims

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Application Information

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IPC IPC(8): C23C4/131C23C4/06
CPCC23C4/131C23C4/06
Inventor 戴亚洲戴玥
Owner 戴亚洲
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