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High-temperature-resisting material as well as preparation method and application thereof

A high-temperature-resistant and refractory aggregate technology, which is applied in manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve problems such as poor thermal shock performance, achieve good thermal shock performance, reduce upgrade costs, and increase tensile strength at room temperature Effect

Active Publication Date: 2017-11-24
JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a high temperature resistant material, which solves the problem of poor thermal shock performance of existing products

Method used

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  • High-temperature-resisting material as well as preparation method and application thereof
  • High-temperature-resisting material as well as preparation method and application thereof
  • High-temperature-resisting material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] To make a heat-resistant filter section:

[0071] 1. Taking material

[0072] Take materials according to the following ratio:

[0073]

[0074] Among them, the aggregates are all spherical or quasi-spherical.

[0075] 2. Preparation method

[0076] All raw materials are mixed in the sand mixer for 5 minutes;

[0077] The mixed wet sand is molded with a hot core box core shooter, the mold temperature is 100°C, carbon dioxide is blown in, and the mold is demoulded after 10 minutes of heat preservation; the muffle furnace is heated to 600°C at a heating rate of 4°C / min for sintering, and the heat preservation 30 minutes.

[0078] 3. Product testing

[0079] Carry out the pouring test, the pouring temperature is 1600±5°C.

Embodiment 2

[0081] The difference with Example 1 is only that the raw materials are different, as follows:

[0082] 100-140 mesh ceramsite sand 90%

[0083] 200-270 mesh clay 1%

[0084] Silica sol 9%.

Embodiment 3

[0086] The difference with Example 1 is only that the raw materials are different, as follows:

[0087]

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Abstract

The invention provides a high-temperature-resisting material as well as a preparation method and application thereof. The high-temperature-resisting material is mainly prepared from the following components by mixing and sintering: based on the weight percentage content, 60 percent to 90 percent of refractory aggregate with the granularity of 140 meshes or less, 1 percent to 25 percent of refractory aggregate with the granularity of 200 meshes or more and 2 percent to 25 percent of a binding agent. According to the high-temperature-resisting material provided by the invention, the refractory aggregate with different granularities is combined according to a scientific proportion and then is sintered, so that bridging connection, realized by point contact, between the refractory aggregate (namely aggregate) and the other aggregate can be promoted, and tight connection of bridging is also promoted; a microscopic structure is adopted so that the porosity of the material reaches 30 percent or more and the volume density is less than or equal to 1.5g / cm<3>; cracks are not easily expanded so that the thermal shock performance is good, the pouring temperature is greater than or equal to 1650 DEG C and the room-temperature tensile strength is greater than or equal to 1.0MPa.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a high temperature resistant material and its preparation method and application. Background technique [0002] Casting is a method of pouring molten metal into a casting cavity adapted to the shape of the part, and obtaining the part or blank after it is cooled and solidified. The gating system is one of the most important materials used in the casting process. [0003] The gating system is a channel composed of a sprue cup, a sprue, a horizontal gate and an ingate, which is a channel opened in the mold for introducing liquid metal into the cavity of the mold. The gating system needs to withstand the circulation of high-temperature liquid metal for a long time, so it needs to have strong thermal shock resistance. [0004] In view of this, the present invention is proposed. Contents of the invention [0005] The first object of the present invention is to provide a high temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622B22C9/08
CPCB22C9/082B22C9/086C04B35/622C04B35/66C04B2235/3217C04B2235/3427C04B2235/349C04B2235/447
Inventor 王军赵国庆马宇清
Owner JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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