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High-temperature-wear-resistant lining plate for coke pot for coke dry quenching and preparation method thereof

A high-temperature-resistant lining technology, which is applied in coke ovens, coke cooling, coating, etc., can solve the problems of short service life of coke tank linings, difficulty in realizing single-quality materials, and inability to meet continuous production, and achieve excellent performance , excellent wear resistance, and maintain the effect of small change in performance

Inactive Publication Date: 2011-10-12
SHIJIAZHUANG HUADING HI TECH STRENGTHEN ALLOY EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it is impossible to take into account the performance of a single material in terms of strength, hardness, plasticity, high temperature resistance, wear resistance, heat insulation and thermal shock resistance, the developed coke tank linings generally have short service life and low reliability, and cannot meet the requirements of dry conditions. Requirements for long-term continuous production under coke quenching production site conditions
Based on the comprehensive research of existing materials, it is found that it is difficult to realize the single material that meets the above requirements.

Method used

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  • High-temperature-wear-resistant lining plate for coke pot for coke dry quenching and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) The prepared cermet powder is uniformly mixed by a three-dimensional powder mixer. The mass percentage of each component in the cermet powder is: C 0.25%, Si 0.35%, Cr 18%, Ni 32%, Al 40%, and the rest The amount is Fe; the particle size is 180 mesh;

[0049] (2) Use shot peening to remove scale and impurities on the surface of the 15CrMo heat-resistant steel plate metal lining; use a brush to evenly paint the light-absorbing paint—black carbon ink on the surface of the above metal lining, and the pre-coating thickness is 0.03 mm;

[0050] (3) Naturally air-dried carbon ink coating; adopt the method of pneumatic powder feeding, and the powder feeding volume is 4.0L / min;

[0051] (4) Under the protection of argon gas, the cermet powder is scanned by a 5kW high-power laser, the laser power is P=3500W, the spot diameter is 5mm, the overlap rate is 30%, and the scanning speed is V=500mm / min, and the alloy powder is clad on the metal Liner surface.

[0052] The CDQ cok...

Embodiment 2

[0054] (1) Mix the prepared cermet powder uniformly through a V-type powder mixer. The mass percentage of the cermet powder is: C 0.2%, Si 1.2%, Cr 15%, Ni 25%, Al 35%, and the balance is Fe, the particle size of cermet powder is 180 mesh;

[0055] (2) Remove the scale on the surface of the cast steel 40Mn2 metal liner with a grinder; use a brush to evenly paint the black carbon ink light-absorbing paint on the surface of the metal liner, and the pre-coating thickness is 0.03mm;

[0056] (3) Naturally air-dry the carbon ink coating; then adopt the method of pneumatic powder feeding, and the powder feeding volume is 3.3L / min;

[0057] (4) Under the protection of argon gas, the cermet powder is scanned by a 5kW high-power laser, the laser power is P=3200W, the spot diameter is 5mm, the overlap rate is 30%, and the scanning speed is V=450mm / min, and the cermet powder is clad on Metal backing surface.

[0058] The CDQ coke pot high-temperature-resistant wear plate prepared by th...

Embodiment 3

[0060] (1) The prepared cermet powder is evenly mixed by a planetary ball mill mixer. The mass percentage of the cermet powder is: C 0.15%, Si 0.75%, Cr 20%, Ni 33%, Al 30%, and the balance is Fe , the particle size of the cermet powder is 180 mesh;

[0061] (2) Use sandpaper to remove the scale on the surface of the ZG35CrMo metal lining; use a brush to evenly paint the black carbon ink light-absorbing paint on the surface of the metal lining, and the pre-coating thickness is 0.05mm;

[0062] (3) Dry the carbon ink coating with a blower; adopt the method of gravity powder feeding, and the powder feeding amount is 3.0L / min;

[0063] (4) Under the protection of argon gas, the metal powder is scanned by a 5kW high-power laser, the laser power P=3300W, the spot diameter is 5mm, the overlap rate is 40%, and the scanning speed V=450mm / min, the cermet powder is clad on the metal Liner surface.

[0064] The CDQ coke tank high-temperature wear-resistant plate prepared by the method ...

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Abstract

The invention discloses a preparation method of a high-temperature-wear-resistant lining plate for a coke pot for coke dry quenching. The high-temperature-wear-resistant lining plate is prepared by cladding a metal ceramic layer on a metal lining plate. The preparation method comprises the following steps: (1) preparing uniformly mixed metal ceramic powder; (2) brushing light absorbing coatings on the surface of the metal lining plate uniformly; (3) after the coating of the light absorbing coatings is dry, feeding the powder pneumatically or feeding the powder by way of powder spreading or gravity, wherein the thickness of the powder layer is 0.5-4.0mm; and (4) scanning the metal ceramic powder which has been spread or delivered in place by virtue of a high power laser and forming the cladded high-temperature-wear-resistant metal ceramic layer on the metal lining plate. By utilizing the method to prepare the high-temperature-wear-resistant metal lining plate for the coke pot for coke dry quenching, low cost and stable production quality are ensured, and implementation is convenient; and the method is convenient for mass production and has prominent economic and social benefits.

Description

technical field [0001] The invention relates to a high-temperature wear-resistant liner for CDQ coke tanks and a preparation method thereof, belonging to the field of mechanical processing technology. Background technique [0002] With the development of modern industry, the demand for coke is increasing day by day. The dry coke quenching process in coking production is a production process that uses inert circulating gas to extinguish red-hot coke and recover coke waste heat. This process can fully recover 1050 ℃ red coke. waste heat, and can realize zero discharge of pollutants in the production process of coke quenching, so as to achieve the purpose of energy saving and environmental protection. [0003] In the dry coke quenching production process, the coke tank is an important equipment throughout the entire production process. It accepts the red coke at about 1050℃ pushed out from the coke oven, runs to the top of the quenching chamber through the traction device and ...

Claims

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Application Information

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IPC IPC(8): C23C24/10C10B39/02
Inventor 郑立娟付宇明李玉清马艳娥
Owner SHIJIAZHUANG HUADING HI TECH STRENGTHEN ALLOY EQUIP MFG
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