Method for producing medium chromium tungsten-containing composite anti-wear roll ring

A manufacturing method and technology of grinding rollers, which are applied in the directions of manufacturing tools, heat treatment process control, furnace types, etc., can solve problems such as unsatisfactory performance, achieve a good performance-price ratio, solve high wear resistance and high strength and toughness, and ensure bricks and tiles. quality effect

Inactive Publication Date: 2007-04-11
SHANDONG JINGTAI WEAR RESISTANT MATERIAL
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Problems solved by technology

[0003] The performance of the above-mentioned materials is still somewhat unsatisfactory, and needs to be improved and improved

Method used

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Embodiment 1

[0013] In this embodiment, the dimensions of the manufacturing counter-roller ring are: outer diameter 700mm, width 500mm, thickness 70mm; the thickness of the chromium-tungsten alloy cast iron layer in the outer layer is 35mm, and the thickness of the ductile iron layer in the inner layer is 35mm.

[0014] The steps of the manufacturing method of the composite anti-wear roll ring of the present embodiment are as follows:

[0015] (1) The inner material is ductile iron, and the outer material is medium chromium tungsten alloy cast iron; the chemical composition and weight percentage of medium chromium tungsten alloy cast iron are: Cr 7%, W 0.8%, C 3.0%, Mn 1.2%, Si 1.4%, rare earth Ce 0.1%, P≤0.03%, S≤0.03%, Fe balance;

[0016] (2) Composite centrifugal casting: use an electric arc furnace to smelt the above-mentioned medium-chromium-tungsten alloy cast iron and nodular cast iron; adopt the centrifugal casting process, the mold temperature is 220°C when pouring, and the casti...

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Abstract

The present invention relates to production process of medium chromium tungsten-containing composite antiwear roller ring, and belongs to the field of high performance cast iron alloy material and casting producing technology. The production process includes centrifugal composite casting and heat treatment. The composite roller ring has one outer layer of medium chromium tungsten-containing cast iron alloy comprising Cr 12-20 wt%, W 1.0-3.0 wt%, C 2.2-3.4 wt%, Cu 0.6-1.5 wt%, Mn 0.4-1.4 wt%, Ce 0.1 wt%, Si not more than 0.7 wt%, P not more than 0.1 wt%, S not more than 0.06 wt% and Fe for the rest; and one inner layer of high strength nodular cast iron. The composite roller ring has the advantages of high wear resistance, less internal stress, high toughness, long service life and low production cost, and is suitable for use in crushing coal gangue and other hard material in brick making industry.

Description

technical field [0001] The invention relates to a method for manufacturing a medium-chromium-containing tungsten composite anti-friction roll ring, and belongs to the technical field of manufacturing technology of high-performance cast iron alloy materials and castings thereof. Background technique [0002] The roller ring on the double-roller pulverizer is an important part of the mechanical equipment used for crushing or crushing hard solid blocks such as coal gangue and pebbles. The material of the roller ring has certain requirements, and it is required to have high wear resistance. , low internal stress, high toughness, and has a high service life. For the material problem of the outer layer of the composite anti-wear pair of roller rings, there are more materials to choose from, which can also be seen in the patent literature. Chinese patent ZL 94100942.4 has reported the use of chromium manganese molybdenum cast iron material, its composition is: Cr 11.0-14.5%, Mn 0....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C4/30C22C37/04C22C37/06B22D19/16B22D13/02B22D13/12C21D9/38C21D11/00
Inventor 翟启杰王溪苏恒渤郑热力
Owner SHANDONG JINGTAI WEAR RESISTANT MATERIAL
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