High-temperature antifriction metal

A high-temperature anti-wear and alloy technology, applied in the field of alloys, can solve problems such as restricting the development of the aluminum industry and poor maintenance working conditions, and achieve the effect of good high-temperature anti-wear performance and long service life

Inactive Publication Date: 2007-09-19
HENAN HONGYU SPECIAL CASTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The central cylinder of fluidized fluidized furnace is the key heat-bearing component in the equipment. The key heat-bearing component of the rotary kiln system is the kiln mouth guard iron, which is the main part inside the equipment. The whole line must be shut down for 3-10 days for maintenance and installation. Every day of shutdown, the loss of misproduction is as high as several 100,000 yuan, in addition, the maintenance work conditions are poor
At present, the kiln guard iron used in various aluminum industries is 1Cr18Ni9Ti stainless steel and chromium manganese nitrogen heat-resistant steel, and its service life is only 3-6 months, while the central cylinder of the fluidized fluidized furnace is welded with 1Cr18Ni9Ti stainless steel plate, and its service life is 2-3 months. , that is, deformation or wear, which seriously restricts the development of my country's aluminum industry

Method used

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Embodiment Construction

[0006] The kiln mouth back iron and the central cylinder are characterized by abrasive impact and friction at high temperature (about 1100°C). On the basis of considering the oxidation resistance, multiple strengthening elements are added to strengthen the austenite matrix and improve the Cr 23 C 6 The morphology and distribution of carbides can improve the high-temperature strength and high-temperature wear resistance of materials. According to the characteristics of alternating oxidation and wear in the failure process of high-temperature wear parts, an appropriate amount of rare earth elements and other elements that strengthen the surface oxide layer are added to make the oxide film and The matrix collectively resists the friction of the abrasive.

[0007] C

Si

mn

P

S

Cr

0.13-0.28％

0.5-2.2％

0.7-1.6％

≤0.04％

≤0.03％

21-25％

Ni

Mo

V

N

Re

Fe

6-8％

0.8-1.2％

0.4-0.7％ ...

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PUM

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Abstract

The invention discloses an alloy with resistance to wear under high temperature, and relates to an alloy. The objective of the invention is provided with an alloy with resistance to wear under high temperature, having good resistance to wear under high temperature and long service life. The inventive technical protocol is that, each composition of an alloy with resistance to wear under high temperature and weight percents: C 0.13-0.28%, Si 0.5-2.2% Mn 0.7-1.6%, P <=0.04%, S <=0.03%, Cr 21-25%, Ni 6-8%, Mo 0.8-1.2%, V 0.4-0.7%, N 0.15-0.3%, Re 0.6-0.8%, and the residuel of Fe. The invention is usable for outlet guard iron and central cylinder.

Description

Technical field: [0001] The invention relates to an alloy, in particular to a high-temperature wear-resistant alloy for a kiln mouth back iron and a center cylinder. Background technique: [0002] The central cylinder of fluidized fluidized furnace is the key heat-bearing component in the equipment. The key heat-bearing component of the rotary kiln system is the kiln mouth guard iron, which is the main part inside the equipment. The whole line must be shut down for 3-10 days for maintenance and installation. Every day of shutdown, the loss of misproduction is as high as several One hundred thousand yuan, in addition, the maintenance work conditions are poor. At present, the kiln guard iron used in various aluminum industries is 1Cr18Ni9Ti stainless steel and chromium manganese nitrogen heat-resistant steel, and its service life is only 3-6 months, while the central cylinder of the fluidized fluidized furnace is welded with 1Cr18Ni9Ti stainless steel plate, and its service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/46C22C38/58
Inventor 代平张田喜张金凤孙玉福范乃文朱孝祥
Owner HENAN HONGYU SPECIAL CASTINGS
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