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Modified spherified core-spun wire and preparation method thereof

A technology of spheroidizing cored wire and cored wire, applied in the field of material chemistry, can solve the problems of reducing the comprehensive mechanical properties of the finished product CADI, affecting the application of CADI large-diameter casting balls, and slowing the cooling rate of the core of the casting. Spheroidization decline, high hardness, the effect of improving the mechanical properties of the core

Inactive Publication Date: 2018-06-12
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 spherified core-spun wire and preparation method thereof
  • Modified spherified core-spun wire and preparation method thereof
  • Modified spherified core-spun wire and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Preparation of modified spheroidized cored wire

[0027] (1) Weigh 8 kg of spheroidized cored wire powder with the brand name QX-Mg22RE, and mix the spheroidized cored wire with 1.4 kg of micron silicon carbide in a SYH three-dimensional mixer for 3-5 hours at room temperature , get mixture A;

[0028] (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;

[0029] (3) Use the GBX-6(A) type cored wire unit to make the mixture B into a modified spheroidized cored wire with a diameter of 13 mm.

Embodiment 2

[0030] Example 2: Preparation of modified spheroidized cored wire

[0031] The method is the same as in Example 1, except that the grade of the spheroidized cored wire in step (1) is QX-Mg22RE2; the amount of raw materials is: 8 kg of spheroidized cored wire, 1.4 kg of micron silicon carbide, and 0.6 kg of nanometer silicon carbide .

Embodiment 3

[0032] Example 3: Preparation of modified spheroidized cored wire

[0033] The method is the same as in Example 1, except that the grade of the spheroidized cored wire in step (1) is QX-Mg24RE; the amount of raw materials is: 8 kg of spheroidized cored wire, 1.4 kg of micron silicon carbide, and 0.6 kg of nanometer silicon carbide .

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Abstract

The invention belongs to the technical field of material chemistry, and particularly relates to a modified spherified core-spun wire and a preparation method thereof. The modified spherified core-spunwire comprises, by mass part, 60 wt% to 90 wt% of spherified core-spun wires, 10 wt% to 20 wt% of micron silicon carbide and 2 wt% to 10 wt% of nano silicon carbide. According to the modified spherified core-spun wire and the preparation method thereof, the nucleation number of CADI can be increased, and the spherifying process can be optimized.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a modified spheroidized 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 ...

Claims

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Application Information

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IPC IPC(8): C21C1/10C22C33/10C22C35/00
CPCC21C1/105C22C33/10C22C35/00
Inventor 张芬红黄勇桂劲松徐伟
Owner HEFEI KAIER NANOMETER ENERGY & TECH
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