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High vanadium high-wear-resistant alloy and its preparation method

A high wear-resistant and alloy technology, applied in the field of high-vanadium wear-resistant alloys, can solve the problems of high performance-price ratio, increased cost, difficult market promotion and application, etc., and achieves the effects of low heat treatment temperature, improved distribution shape, and energy saving.

Inactive Publication Date: 2002-11-20
JIANGSU MACHINERY & ELECTRICAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, except for V, the composition of the material is the same as that of high-chromium white cast iron, so the structural characteristics and performance characteristics of the material are basically the same as those of high-chromium white cast iron. Although the wear resistance is increased by about 30%, the cost also increases simultaneously. Its performance-price ratio is not higher than that of high-chromium white cast iron, and it is difficult to promote and apply in the market

Method used

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  • High vanadium high-wear-resistant alloy and its preparation method
  • High vanadium high-wear-resistant alloy and its preparation method
  • High vanadium high-wear-resistant alloy and its preparation method

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Embodiment 1

[0032]Embodiment 1: high-vanadium high-wear-resistant alloy, according to the following percentages by weight, three furnace alloys were smelted in an intermediate frequency induction furnace. Preheat the ferrovanadium in the heating furnace to about 500°C; raise the temperature of the molten iron in the smelting furnace to about 1500°C, add the ferrovanadium in batches after the aluminum is fully deoxidized. Add ferrosilicon and ferromanganese within 5 minutes before coming out of the furnace, and add rare earth and ferrotitanium by pouring in the bag; when the temperature rises to 1490-1520°C, insert aluminum again for deoxidation and then come out of the furnace; use sand casting, pouring temperature 1400-1420°C; LPC1500-III hammer head and wedge test block. After the casting is cooled, remove the sprue and remove the flash and burrs; heat the casting to 500-550°C for tempering. Wire-cut and grind the wedge-shaped test block into a 10×10×55mm sample. For comparison, the L...

Embodiment 5

[0037] Mo: 0.8% P: ≤0.07% The rest is Fe and unavoidable impurity elements. Embodiment 5 is substantially the same as Embodiment 1, but the component ratio is as follows:

[0038] C: 3.2% Si: 1.5%

[0039] Cr: 15.0% Mn: 1.2%

[0040] V: 16.0% S: ≤0.05%

[0041] Mo: 1.5% P: ≤0.07%

[0042] The rest is Fe and unavoidable impurity elements. Embodiment 6 is substantially the same as embodiment 1, but also has in the component:

Embodiment 6

[0042] The rest is Fe and unavoidable impurity elements. Embodiment 6 is substantially the same as embodiment 1, but also has in the component:

[0043] Re: 0.04% Ti: 0.25% Example 7, which is basically the same as Example 1, but the composition ratio is as follows:

[0044] C: 2.5% Si: 1.3%

[0045] Cr: 10.0% Mn: 1.0%

[0046] V: 13.0% S: ≤0.05%

[0047] Mo: 1.5% P: ≤0.07%

[0048] Re: 0.04% Ti: 0.25%

[0049] The rest is Fe and unavoidable impurity elements. Embodiment 8 is substantially the same as Embodiment 1, but the component ratio is as follows:

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Abstract

The present invention relates to a high-vanadium high-wearability alloy, its composition contains: (wt%) C:2.0-3.2; Si:1.0-1.5; Cr: 7.0-12.0; Mn: 0.8-1.2; V: 8.0-15.0; S is less than or equal to 0.05; Mo:0.8-1.5; P is less than or equal to 0.07; and the rest is Fe and impurity, in its optimum scheme Re: 0.03-0.05 and Ti: 0-0.5 also can be added. Its preparation method includes the following steps: placing pig iron, waste steel, ferrochrome and ferromolybdenum into smelting furnace, heating and melting; placing ferrovanadium in the heating furnace, preheating to about 500 deg.C; heating molteniron to about, 500 deg.c in smelting furnace, deoxidizing inserted aluminium, adding ferrovanadium, ferrosilicium, ferromanganese, rare earth and ferrotitanium, heating to 1490-1520 deg.C, pouring temp. is 1400-1420 temp., then heating to 500-550 deg.c and tempering.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a high-vanadium wear-resistant alloy suitable for working conditions of high stress and strong abrasive wear, and a preparation method of the alloy. Background technique [0002] Wear is one of the main ways of material failure, especially in mining, building materials, electric power and other industries, due to the fine crushing process of a large number of materials (such as various metal ores, brown corundum, cement clinker, etc.), the grinding The body such as the hammer head (blow bar) and the lining plate are strongly worn, which consumes a large amount of metal materials and affects the operating efficiency of the main engine. In order to meet the needs of different wear conditions, a variety of wear-resistant materials have emerged, such as high-manganese steel, low-alloy steel, white cast iron, etc. Among them, high-chromium white cast iron is currently one of the materials...

Claims

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Application Information

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IPC IPC(8): C22C38/24C22C38/36
Inventor 宋润泽卢建波丁丽李根金刘怀钧谢平王天有
Owner JIANGSU MACHINERY & ELECTRICAL RES INST
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