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High-chromium alloy cast ball and casting method thereof

A high-chromium alloy and cast ball technology, which is applied in the field of wear-resistant materials, can solve the problems of low crushing rate and poor as-cast quality of high-chromium alloy cast balls, and achieves low crushing rate, high cost performance and dense structure. Effect

Inactive Publication Date: 2016-08-17
宁国市开源电力耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a high-chromium alloy casting ball and its casting method, which has a dense structure, good wear resistance, and low breakage rate, which solves the problem of poor quality of high-chromium alloy casting balls in the as-cast state. problems, and the product has no cracks, which improves the hardness, toughness, fatigue resistance and impact resistance, saves a lot of chromium alloy resources for the country, and also reduces operating costs for users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The high chromium alloy cast ball in this embodiment contains the following chemical elements and their mass percentages: C: 0.3%, Mn: 0.33%, Cr: 11.03%, Sb: 0.17%, Bi: 0.08%, Si: 0.35% , Zr: 0.2%, V: 0.06%, Cu: 0.42%, Nb: 0.2%, Ti: 0.12%, Re: ≤0.06%, S: ≤0.06%, P: ≤0.06%; the balance is Fe.

[0024] According to the percentage by weight of each chemical component in the raw material of this embodiment, casting method comprises the following steps:

[0025] S1. Raw material smelting: Weigh C, Mn, Cr, Sb, Bi, Si, Zr, V, Cu, Nb, Ti, Re, S, P and Fe according to the weight percentage of the raw materials, and then add them to the electric furnace for smelting to 1400 ℃ out of the furnace to obtain molten iron;

[0026] S2. Casting: pouring the molten iron prepared in step S1 into a prefabricated mold for molding, keeping the pouring temperature at 1350° C. to obtain a casting;

[0027] S3. Heat treatment: heat the casting obtained in step S2 to 950° C., keep it warm for ...

Embodiment 2

[0029] The high chromium alloy cast ball in this example contains the following chemical elements and their mass percentages: C: 0.9%, Mn: 0.89%, Cr: 12.92%, Sb: 0.28%, Bi: 0.15%, Si: 0.47% , Zr: 0.5%, V: 0.23%, Cu: 0.59%, Nb: 0.5%, Ti: 0.22%, Re: ≤0.06%, S: ≤0.06%, P: ≤0.06%; the balance is Fe.

[0030] According to the percentage by weight of each chemical component in the raw material of this embodiment, casting method comprises the following steps:

[0031] S1. Raw material smelting: Weigh C, Mn, Cr, Sb, Bi, Si, Zr, V, Cu, Nb, Ti, Re, S, P and Fe according to the weight percentage of the raw materials, and then add them to the electric furnace for smelting to 1550 ℃ out of the furnace to obtain molten iron;

[0032] S2. Casting: pouring the molten iron prepared in step S1 into a prefabricated mold for molding, keeping the pouring temperature at 1450° C. to obtain a casting;

[0033] S3. Heat treatment: heat the casting obtained in step S2 to 1000° C., keep it warm for 6 ...

Embodiment 3

[0035] The high chromium alloy cast ball in this example contains the following chemical elements and their mass percentages: C: 0.6%, Mn: 0.65%, Cr: 12%, Sb: 0.22%, Bi: 0.12%, Si: 0.40% , Zr: 0.3%, V: 0.15%, Cu: 0.50%, Nb: 0.3%, Ti: 0.17%, Re: ≤0.06%, S: ≤0.06%, P: ≤0.06%; the balance is Fe.

[0036] According to the percentage by weight of each chemical component in the raw material of this embodiment, casting method comprises the following steps:

[0037] S1. Raw material smelting: Weigh C, Mn, Cr, Sb, Bi, Si, Zr, V, Cu, Nb, Ti, Re, S, P and Fe according to the weight percentage of the raw materials, and then add them to the electric furnace for smelting to 1470 ℃ out of the furnace to obtain molten iron;

[0038] S2. Casting: pouring the molten iron prepared in step S1 into a prefabricated mold for molding, keeping the pouring temperature controlled at 1400° C. to obtain a casting;

[0039]S3. Heat treatment: heat the casting obtained in step S2 to 970° C., keep it warm ...

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Abstract

The invention provides a high-chromium alloy cast ball and a casting method thereof, and relates to the technical field of abrasion-resistant materials. The high-chromium alloy cast ball comprises, by mass percentage, 0.3-0.9% of C, 0.33-0.89% of Mn, 11.03-12.92% of Cr, 0.17-0.28% of Sb, 0.08-0.15% of Bi, 0.35-0.47% of Si, 0.2-0.5% of Zr, 0.06-0.23% of V, 0.42-0.59% of Cu, 0.2-0.5% of Nb, 0.12-0.22% of Ti, 0.06% or less of Re, 0.06% or less of S, 0.06% or less of P and the balance Fe. The high-chromium alloy cast ball is compact in structure, good in abrasion resistance and low in breakage rate. The problem that the use quality of the high-chromium alloy cast ball is not good enough is solved. The products are free of cracks, the hardness, toughness, anti-fatigue performance and impact resistance are improved, a large number of chromium alloy resources are saved for the country, and operation cost is reduced for users.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a high-chromium alloy casting ball and a casting method thereof. Background technique [0002] With the in-depth development of the national economy, new technologies, new equipment, and new materials have attracted more and more attention. According to the statistics of my country's five systems of metallurgy, building materials, electric power, agricultural machinery, and coal, plus the incomplete statistics of automobiles, tractors, and construction machinery in the machinery sector, my country's annual consumption of metal wear-resistant materials is about 3 million tons or more. If the theory of friction and wear is applied to prevent and reduce friction and wear, 15 billion US dollars can be saved every year. Therefore, people pay more and more attention to the development and application of metal wear-resistant materials. Over the past 30 years of reform...

Claims

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Application Information

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IPC IPC(8): C22C38/60C22C38/28C22C38/26C22C38/20C22C38/24C22C38/02C22C38/04
CPCC22C38/60C22C38/002C22C38/005C22C38/02C22C38/04C22C38/20C22C38/24C22C38/26C22C38/28
Inventor 汪德发汤新明徐超张联合汪礼忠赵文定
Owner 宁国市开源电力耐磨材料有限公司
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