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Protective casing with oxidation corrosion resistance and thermal shock resistance and a preparation method thereof

A technology for protecting casing and impact performance, applied in the field of protective casing and its preparation, can solve the problems of rupture and damage of the protective casing, affecting the smooth operation of equipment, poor thermal shock resistance performance, etc. Avoid the damage of protective casing and increase the effect of high temperature impact resistance

Active Publication Date: 2016-09-07
常州英诺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used protective sleeves for thermocouples or heating radiators are made of stainless steel steel pipes, which are exposed to an oxidizing atmosphere for a long time during work. Using this protective sleeve is prone to severe corrosion, which affects the smooth operation of the entire equipment; commonly used aluminum oxide Although the protective sleeve has good corrosion resistance, its thermal shock resistance is poor, and the shrinkage of the material layer during heating may easily lead to rupture and damage of the protective sleeve.

Method used

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  • Protective casing with oxidation corrosion resistance and thermal shock resistance and a preparation method thereof
  • Protective casing with oxidation corrosion resistance and thermal shock resistance and a preparation method thereof
  • Protective casing with oxidation corrosion resistance and thermal shock resistance and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A protective casing with both oxidation resistance and thermal shock resistance, the composition of the casing includes the following components in parts by weight:

[0017]

[0018] Mix the above-mentioned components uniformly and dry at 65°C for 40 minutes, press the whole body under a pressure of 100 bar for 30 minutes to shape, then fire at 1250°C for 48 hours, and cool naturally to obtain a protective sleeve.

[0019] The bushing prepared in this example was put from room temperature into a high temperature environment of 800°C for 25 minutes, then taken out from the high temperature environment and cooled naturally at room temperature. This experiment process was repeated 1200 times, and the bushing did not break.

[0020] Submerge 2 / 3 of the casing prepared in this example in the high-temperature zinc-aluminum alloy liquid, take it out after four months and rinse the surface of the casing, and no thinning of the casing is found; while commercially available com...

Embodiment 2

[0022] A protective casing with both oxidation resistance and thermal shock resistance, the composition of the casing includes the following components in parts by weight:

[0023]

[0024] The preparation process of the casing is as in Example 1.

[0025] The bushing prepared in this example was put from room temperature into a high temperature environment of 800°C for 25 minutes, then taken out from the high temperature environment and cooled naturally at room temperature. This experiment process was repeated 1200 times, and the bushing did not break.

[0026] Submerge 2 / 3 of the sleeve prepared in this example in the same zinc-aluminum alloy solution as in Example 1, take it out after four months and rinse the surface of the sleeve, no thinning of the sleeve was found .

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Abstract

The invention belongs to the field of heat resistant material preparation, and in particular relates to a protective casing with oxidation corrosion resistance and thermal shock resistance and a preparation method thereof. The synergistic effect of silicon carbide, graphite, carbon-containing resin powder, boron glass powder, feldspar powder, silicon powder and clay, the casing has improved oxidation corrosion resistance and greatly increased impact resistant performance, and doubled service life, so as to ensure the long-term use in high temperature environment.

Description

technical field [0001] The invention belongs to the field of heat-resistant material preparation, and in particular relates to a protective sleeve with both oxidation resistance and thermal shock resistance and a preparation method thereof. Background technique [0002] High temperature resistant casing has many characteristics that are difficult to be replaced by other similar pipes: high temperature resistance, thermal insulation, flame retardant, electrical insulation, chemical stability, weather aging resistance, cold resistance, water resistance, oil resistance, ozone resistance, Voltage, arc resistance, corona resistance, etc., safety and environmental protection, suitable for working in high temperature environment. Thermocouples and heating radiators operating at high temperatures have stricter requirements for their casing materials. [0003] At present, the commonly used protective sleeves for thermocouples or heating radiators are made of stainless steel steel pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52
CPCC04B35/522C04B2235/3418C04B2235/3472C04B2235/349C04B2235/365C04B2235/3826C04B2235/48
Inventor 蒋超
Owner 常州英诺新材料有限公司
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