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Anti-abrasion sink roller shaft sleeve and manufacturing method thereof

A manufacturing method and technology of submerged rollers, which are applied in the directions of bearing components, shafts and bearings, coatings, etc., can solve the problems of high brittleness, easy cracking and peeling welding performance, and achieve fine structure, improve the corrosion resistance of zinc liquid, The effect of high hardness

Active Publication Date: 2013-01-02
JIANGSU JIULIAN METALLURGY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the environment of zinc liquid corrosion and wear, it has excellent use effect, but the material of this invention has the disadvantages of high brittleness, easy cracking and peeling during use, and poor welding performance.

Method used

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  • Anti-abrasion sink roller shaft sleeve and manufacturing method thereof
  • Anti-abrasion sink roller shaft sleeve and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Smelting the sunken roller sleeve with an electric furnace, the manufacturing process steps are:

[0037] ①Heat and melt ordinary steel scrap, low-carbon ferrochromium, recarburizer, ferrotungsten, and ferromolybdenum, add ferrosilicon and ferromanganese after the molten steel is melted, continue to heat up to 1592°C, add aluminum for deoxidation and alloying, and then add in sequence Ferro-boron, ferro-niobium, ferro-titanium, and calcium-silicon alloys are released when the temperature is raised to 1623°C after adjusting the composition before the furnace;

[0038] ② During the tapping process of the molten steel, when the molten steel is 42%, the mass percentage is 5-8% Y, 7-10% Mg, 40-44% Si, and the balance is Fe yttrium-based heavy rare earth magnesium Ferrosilicon alloy and KMnO calcined at 350°C 4 Potassium-containing substances are tightly covered with a thin steel sheet with a thickness of 0.10mm, and then thrown into the ladle with the flow;

[0039] ③Centr...

Embodiment 2

[0043] Smelting the sunken roller sleeve with an electric furnace, the manufacturing process steps are:

[0044] ①Heat and melt ordinary steel scrap, low-carbon ferrochromium, recarburizer, ferrotungsten, and ferromolybdenum, add ferrosilicon and ferromanganese after the molten steel is melted, continue to heat up to 1609°C, add aluminum for deoxidation and alloying, and then add in sequence Ferro-boron, ferro-niobium, ferro-titanium and calcium-silicon alloys are released when the temperature is raised to 1647°C after adjusting the composition before the furnace;

[0045] ② During the tapping process of molten steel, when the molten steel is 55%, the mass percentage is 5-8% Y, 7-10% Mg, 40-44% Si, and the balance is Fe-based heavy rare earth magnesium Ferrosilicon alloy and KMnO calcined at 350°C 4 Potassium-containing substances are tightly covered with a thin steel sheet with a thickness of 0.25mm, and then thrown into the ladle with the flow;

[0046] ③Using the lost foa...

Embodiment 3

[0050] Smelting the sunken roller sleeve with an electric furnace, the manufacturing process steps are:

[0051] ①Heat and melt ordinary steel scrap, low-carbon ferrochrome, recarburizer, ferrotungsten, and ferromolybdenum, add ferrosilicon and ferromanganese after the molten steel is melted, continue to heat up to 1599°C, add aluminum for deoxidation and alloying, and then add in sequence Ferro-boron, ferro-niobium, ferro-titanium, and calcium-silicon alloys are released when the temperature is raised to 1633°C after adjusting the composition before the furnace;

[0052] ② During the tapping process of molten steel, when the molten steel is 48%, the mass percentage is 5-8% Y, 7-10% Mg, 40-44% Si, and the balance is Fe-based heavy rare earth magnesium Ferrosilicon alloy and KMnO calcined at 350°C 4 Potassium-containing substances are tightly covered with a thin steel sheet with a thickness of 0.20mm, and then thrown into the ladle with the flow;

[0053] ③Centrifugal casting...

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Abstract

The invention relates to an anti-abrasion sink roller shaft sleeve and a manufacturing method thereof, belonging to the technical field of sink roller shaft sleeves. The anti-abrasion sink roller shaft sleeve is prepared from the following components in percentage by mass: 0.15-0.28% of C, 3.0-3.5% of B, 2.0-2.5% of Cr, 9.5-10.0% of W, 2.5-3.0% of Mo, 0.65-0.80% of Al, 1.20-1.50% of Si, 0.25-0.50% of Mn, 0.04-0.08% of Y, 0.06-0.10% of Ti, 0.06-0.10% of Nb, 0.03-0.06% of Ca, 0.05-0.08% of Mg, 0.08-0.12% of K, less than 0.04% of S, less than 0.05% of P and the balance of Fe. The manufacturing method comprises the following steps: smelting in an electric furnace to form by a casting method, quenching, tempering and carrying out finish machining. The anti-abrasion sink roller shaft sleeve has the advantages of high hardness, abrasion resistance, high toughness and favorable zinc liquid corrosion resistance.

Description

technical field [0001] The invention relates to a sinking roller bushing and a manufacturing method thereof, in particular to an abrasion-resistant sinking roller bushing and a manufacturing method thereof, and belongs to the technical field of sinking roller bushings. Background technique [0002] During the production of continuous hot-dip galvanizing, the steel strip changes direction by sinking rolls immersed in zinc liquid (temperature 460~480°C), that is, from entering the galvanizing pot to exiting the galvanizing pot, and the galvanized layer is solidified and cooled. The sinking roller that rotates with the movement of the steel belt is supported on the fixed frame by the bushes on both sides, and the bushes act as sliding bearings. The shaft sleeve materials currently used in hot-dip galvanizing units at home and abroad include cobalt-based alloy Stellite 6B, low-carbon Cr-Ni alloy steel and austenitic heat-resistant steel, among which cobalt-based alloy has anti-w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C33/06F16C33/04F16C33/14C23C2/40
Inventor 蒋健伟符寒光
Owner JIANGSU JIULIAN METALLURGY MACHINERY
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