High-temperature nano-grade anti-carburizing material and coating, and application thereof

An anti-carburization and carbon coating technology, applied in the field of high-temperature resistant materials, can solve the problems of non-wetting, carburization, and air gap generation, and achieve the effects of low cost, high thermal conductivity, and elimination of air gap thermal resistance

Active Publication Date: 2012-02-15
SHILIN LUOHE METALLURGY EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to protect the cooling water pipes of blast furnace cast iron staves from carburization, adapt to harsh working environments, and increase their service life, a series of low-cost high-temperature nano-anti-carburization materials and

Method used

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  • High-temperature nano-grade anti-carburizing material and coating, and application thereof
  • High-temperature nano-grade anti-carburizing material and coating, and application thereof
  • High-temperature nano-grade anti-carburizing material and coating, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0067] Example 1: High temperature nano anti-carburizing material (slurry) formula

[0068] High temperature nano anti-carburizing material (slurry) formulations 1 and 2, see Table 1 and Table 2, respectively.

[0069] Table 1 High temperature nano anti-carburizing material (slurry) formula 1

[0070] raw material name Specification (mm) content(%) Actual weighing (g) Remarks Alumina0.0059.8649.3 Chromium oxide0.02112.3361.65 D01 powder nanoscale27.85139.25 Titanium Dioxide nanoscale0.743.7 Silicon powder nanoscale12.3361.65 Liquid water glass Industrial grade20129.6 sodium tripolyphosphate Industrial grade0.753.7 Alcohol ester-12 Industrial grade13.3266.6 Propylene Glycol Industrial grade3.8219.1 Total amount 100500

[0071] Note: "D01 powder" in the table refers to one of the series of products "D00 powder" produced by Shilin (Luohe) Metallurgical Equipment Company. The material composition (phase) of "D00 powder" is selected from at least one, but not lim...

Example Embodiment

[0080] Example 2: Manufacturing process steps of nano anti-carburizing coating

[0081] The manufacturing process steps of nano anti-carburizing coating are as follows:

[0082] According to the dosage of 500g, according to the formula table of Example 1 above, the proportion 1~the proportion 7 is actually weighed to take the powder part of the various raw materials;

[0083] Add it to the experimental fine mill, and then add zirconia balls with a diameter of 20mm. After 8 hours of electric ball milling, the material will be discharged. The mixed powder specification is ≥600 mesh;

[0084] Weigh the mixed powder and proportions of liquid water glass, sodium tripolyphosphate, alcohol ester-12 and propylene glycol, put them into a mixing tank, and use an adjustable mixer to mix for 30 minutes to form nanometer anti-carburizing Paint, then put it into storage container and use it.

Example Embodiment

[0085] Example 3: Fabrication of nanometer anti-carburizing coating

[0086] 1. Single coating production

[0087] Paint production: according to the formula 1 of the above embodiment 1 and the paint production process of the embodiment 2, 500g of the paint is produced;

[0088] Brushing process: steel pipe blanking-sand blasting-brush coating 0.1mm thick-110 ℃ × 2h drying and serve. The test piece is Nano 1#.

[0089] 2. Double coating production

[0090] Paint production: respectively according to the above-mentioned embodiment 1 formula table ratio 1, ratio 2 and embodiment 2 paint production process, each 500g paint is produced;

[0091] Brushing process: steel pipe blanking-sandblasting-brushing with proportion 1 paint-3~5h natural drying-brushing with proportion 2 paint-110 ℃ × 2h drying and Serve, the sample is Nano 2#.

[0092] 3. Anti-carburization test

[0093] Install carburizing box-heating carburizing in electric furnace-test block dissection-metallographic observation. ...

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Abstract

The invention discloses a high-temperature nano-grade anti-carburizing material, a coating formed with the material, and an application thereof. The material is formulated slurry. The slurry is sprayed and/or painted on a work-piece, such that a coating is formed. The coating is characterized in high-temperature carburization resisting, high thermal conductivity, and good bonding strength with substrate parts. When the coating is imbibed with molten iron, air gaps can be removed. When the coating is applied on the surface of a low-carbon steel part such as a cooling pipe of a cast iron cooling stave in a steel plant, carburization of the low-carbon steel part in a high-temperature carbon atmosphere is avoided. A main application scope of the material coating is that: slurry with the high-temperature nano-grade anti-carburizing material formulation can be sprayed and/or painted on surfaces of equipments/cooling pipes of cast iron cooling staves, and compact high-efficiency long-life anti-carburizing coatings are formed after curing; the slurry can be sprayed and/or painted on surfaces of large steel parts/forging dies, and decarbonization resisting coatings are formed after curing.

Description

technical field [0001] The invention discloses a high-temperature nanometer anti-carburization material, a coating and an application thereof, belonging to the technical field of high-temperature-resistant materials. Background technique [0002] Blast furnace cast iron cooling stave belongs to the cooling equipment of blast furnace body, and its structure is cast iron parts embedded with low-carbon seamless steel pipes. It is responsible for cooling the furnace body to protect the furnace shell and steel structure, support refractory materials and maintain a reasonable furnace shape. The cooling principle of the blast furnace cast iron stave is that the heat in the furnace is transmitted to the refractory lining, the cast iron matrix of the stave, and the seamless steel pipe wall in sequence, and finally the circulating cooling water in the steel pipe takes the heat out of the furnace. It can be seen that the main task of the blast furnace cast iron stave is to cool and dis...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12C09D5/00B05D7/24B32B33/00
Inventor 冯力萧东山姚彦军张进程树森
Owner SHILIN LUOHE METALLURGY EQUIP
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