Grinding roller manufacturing/remanufacturing abrasion-resistant material and preparation method thereof

A wear-resistant material, remanufacturing technology, applied in welding/cutting media/materials, manufacturing tools, welding equipment, etc., can solve the problems of short service life, falling blocks, peeling, large roundness error, etc., to improve operation efficiency , The effect of reducing production cost and low cost

Inactive Publication Date: 2016-12-21
镇江富华轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After processing, the workpiece often has carburization, carburization, and large roundness errors, and due to the stress and slag spots generated during the welding process, micro-cracks and holes appear in the weld layer, and the cracks expand during use. Blocks, peeling, short service life, generally about 8000 hours for one use; and when the wear-resistant layer of the surfacing welding wears to about 5mm or the phenomenon of falling blocks and peeling occurs, it is necessary to re-surfacing welding repair

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The core material is 42CrMo low-alloy steel with toughness, and a layer of mass percentage (%) is compounded by casting on the outside of the core material: C: 2.50, Cr: 13.0, B: 0.80, Mn: 0.50, Si: 0.60, Ni : 0.60, Mg: 0.02, Cc: 0.03, Ti: 0.06, N: 0.006, S<0.04, P<0.04, the balance Fe is a highly wear-resistant modified boron-containing high-chromium cast iron matrix wear-resistant layer; using electric furnace melting, Its manufacturing process steps are:

[0034] ①Heat and melt ordinary steel scrap and ferrochrome, add ferrosilicon and ferromanganese after the molten steel is melted, add ferrosilicon and ferromanganese after 10 minutes, and then add ferroboron; among them, chromium, boron, manganese, silicon and titanium are respectively replaced by chromium Iron, ferrosilicon, ferromanganese, ferrotitanium and ferroboron are added, while magnesium and nickel are added in the form of magnesium-nickel alloy, cerium is added in the form of cerium-based rare earth ferro...

Embodiment 2

[0044] The core material is made of ductile iron, and the core material is composited by casting a layer of mass percentage (%): C: 3.0, Cr: 15.0, B: 1.0, Mn: 0.60, Si: 0.80, Ni: 0.70, Mg: 0.03, Ce: 0.04, Ti: 0.090, N: 0.010, S<0.04, P<0.04, the balance Fe is a highly wear-resistant modified boron-containing high-chromium cast iron wear-resistant layer; it is smelted in an electric furnace, and its manufacturing process steps are:

[0045] ①Heat and melt ordinary steel scrap and ferrochrome, add ferrosilicon and ferromanganese after the molten steel is melted, add ferrosilicon and ferromanganese after 10 minutes, and then add ferroboron; among them, chromium, boron, manganese, silicon and titanium are respectively replaced by chromium Iron, ferrosilicon, ferromanganese, ferrotitanium and ferroboron are added, while magnesium and nickel are added in the form of magnesium-nickel alloy, cerium is added in the form of cerium-based rare earth ferrosilicon, and nitrogen is added in t...

Embodiment 3

[0055] The core material adopts waste grinding rollers, and a layer of composite layer is cast on the outside of the core material. The mass percentage (%) is: C: 2.90, Cr: 18.0, B: 1.80, Mn: 0.8, Si: 1.2, Ni: 0.80, Mg : 0.04, Ce: 0.05, Ti: 0.10, N: 0.015, S<0.04, P<0.04, the balance Fe is a highly wear-resistant modified boron-containing high-chromium cast iron wear-resistant layer; it is smelted in an electric furnace, and its manufacturing process steps are :

[0056] ①Heat and melt ordinary steel scrap and ferrochrome, add ferrosilicon and ferromanganese after the molten steel is melted, add ferrosilicon and ferromanganese after 10 minutes, and then add ferroboron; among them, chromium, boron, manganese, silicon and titanium are respectively replaced by chromium Iron, ferrosilicon, ferromanganese, ferrotitanium and ferroboron are added, while magnesium and nickel are added in the form of magnesium-nickel alloy, cerium is added in the form of cerium-based rare earth ferrosi...

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Abstract

The invention discloses a grinding roller manufacturing/remanufacturing abrasion-resistant material and a preparation method thereof. A grinding roller is formed by a core roller body, a substrate abrasion-resistant layer, a transition layer and a roller face abrasion-resistant shape layer in a coupling mode. A core material is provided with the highly-abrasion-resistant modified boron-containing high-chromium cast iron substrate abrasion-resistant layer through casting and compounding. The substrate abrasion-resistant layer comprises, by mass, 1.75%-3.0% of C, 12.0%-18.0% of Cr, 0.2%-2.0% of B, 0.4%-0.8% of Mn, 0.4%-1.2% of Si, 0.30%-0.80% of Ni, 0.02%-0.04% of Mg, 0.03%-0.05% of Ce, 0.05%-0.10% of Ti, 0.006%-0.015% of N, 0-0.04% of S, 0-0.04% of P, and the balance Fe. Then surfacing of materials of the roller face abrasion-resistant shape layer is conducted on the surface of the transition layer. The roller face abrasion-resistant shape layer is formed by flux-cored wires through surfacing. The flux-cored wires comprises, by mass, 2.3%-3.5% of C, 14.0%-26.0% of Cr, 1.5%-2.0% of Ni, 0.8%-2.0% of Nb, 1.3%-2.0% of Mo, 1.2%-2.3% of Si, 1.0%-1.7% of Ti, 0.3%-1.0% of V, 0.2%-1.5% of B, 0-<0.007% of S, 0-0. 015% of P, and the balance Fe.

Description

technical field [0001] The invention relates to a grinding roller manufacturing / remanufacturing wear-resistant material and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] Grinding equipment is one of the important large-scale equipment widely used in mineral crushing and grinding processing in metallurgy, mining, cement, electric power, chemical industry, coal, building materials, ceramics and refractory materials. It is the key component and main wear and consumable part of the grinding equipment. The annual consumption in our country reaches more than 1.2 million tons. Therefore, seeking to improve the material of grinding rollers, increase their life, and reduce energy consumption and roller consumption has become a common goal pursued by scientific and technological workers in many fields, and has attracted attention from all over the world. Research and development of wear-resistant materials has become the focus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/08C22C38/56C22C38/54C22C38/50C22C38/04C22C38/02C22C37/10C21D1/18C21D1/26C21D9/38B23K35/30B02C23/00
CPCB22D19/085B02C23/00B02C2210/02B23K35/308C21D1/18C21D1/26C21D9/38C22C37/10C22C38/002C22C38/005C22C38/02C22C38/04C22C38/50C22C38/54C22C38/56
Inventor 邱小明侯翠萍包华玉
Owner 镇江富华轧辊有限公司
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