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Modified inoculation core-spun yarn and preparation method thereof

A cored wire and modification technology, applied in the field of material chemistry, can solve the problems of reducing the comprehensive mechanical properties of CADI of finished products, affecting the application of CADI large-diameter casting balls, and slow cooling speed of casting cores, so as to solve the problems of spheroidization recession, high Hardness, the effect of improving mechanical properties

Inactive Publication Date: 2018-06-01
HEFEI KAIER NANOMETER ENERGY & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for large-section ball mill castings with a thickness greater than 100mm, during the casting process, due to the slow cooling rate of the core of the casting and the long crystallization time, there will often be spheroidization recession and graphite spheroid growth due to poor spheroidization. , the reduction of the number of graphite balls, etc., reduces the comprehensive mechanical properties of the finished CADI, especially the impact toughness, and is prone to brittle fracture, which seriously affects the application of CADI large-diameter casting balls

Method used

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  • Modified inoculation core-spun yarn and preparation method thereof
  • Modified inoculation core-spun yarn and preparation method thereof
  • Modified inoculation core-spun yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of modified inoculated cored wire

[0026] (1) Weigh 8 kg of inoculated cored wire with a brand name of YX-CaBa3, and mix the inoculated cored wire with 1.4 kg of micron silicon carbide in a SYH type three-dimensional mixer for 3-5 hours at room temperature to obtain a mixed material A;

[0027] (2) At normal temperature, add 600g of nano-silicon carbide to the mixture A, start the three-dimensional mixer and mix for 3-5 hours to obtain the mixture B;

[0028] (3) Use the GBX-6(A) type cored wire unit to make the mixture B into a modified inoculated cored wire with a diameter of 13 mm.

Embodiment 2

[0029] Example 2: Preparation of modified inoculated cored wire

[0030] The method is the same as in Example 1, except that the brand name of the inoculated cored wire in step (1) is YX-CaBa5; the amount of raw materials is: 8 kg of inoculated cored wire, 1.4 kg of micron silicon carbide, and 0.6 kg of nano silicon carbide.

Embodiment 3

[0031] Example 3: Preparation of modified inoculated cored wire

[0032] The method is the same as in Example 1, except that the brand name of the inoculated cored wire in step (1) is YX-Ca1Ba3; the amount of raw materials is: 8 kg of inoculated cored wire, 1.4 kg of micron silicon carbide, and 0.6 kg of nano silicon carbide.

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Abstract

The invention belongs to the technical field of material chemistry and specifically relates to a modified inoculation core-spun yarn and a preparation method thereof. The modified inoculation core-spun yarn is prepared from the following raw materials in percentage by mass: 60-90% of inoculation core-spun yarn, 10-20% of micron silicon carbide and 2-10% of nano silicon carbide. The modified inoculation core-spun yarn provided by the invention can increase the nucleation quantity, optimize the nodulizing process and improve the mechanical property of the casting.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a modified inoculated cored wire and a preparation method thereof. Background technique [0002] In cement, mining, thermal power generation and other industrial fields, commonly used crushing equipment requires the use of chromium-based wear-resistant materials with high wear resistance. In recent years, due to the reduction of strategic resources, the price of raw materials related to high-carbon ferrochrome has been rising all the way, which has increased the production cost of manufacturing enterprises. In order to help enterprises reduce costs and improve efficiency, the research and development of non-chromium or low-chromium wear-resistant materials is imperative. Carbide-containing austempering ductile iron (abbreviated as CADI) is a new type of ductile iron material derived from austempering ductile iron (abbreviated as ADI). Its metallographic mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/10
CPCC21C1/105
Inventor 张芬红黄勇桂劲松徐伟
Owner HEFEI KAIER NANOMETER ENERGY & TECH
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