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High speed steel roll collar applied to high speed wire rolling mill and manufacture method thereof

A technology of high-speed wire rod and manufacturing method, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of large roll ring brittleness and poor safety in use, and achieve uniform roll diameter, excellent wear resistance, and high hardness. Effect

Inactive Publication Date: 2009-12-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the advantages of high bending strength, good thermal crack resistance, good wear resistance, long service life, light weight, and easy roll replacement, but the roll ring has the disadvantages of high brittleness and poor safety in use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Adopt 500 kilograms of medium-frequency induction furnaces to smelt the roller ring of the present invention, and its manufacturing process steps are:

[0036] ① Mix and heat scrap steel, recarburizer, ferrochromium, metal cobalt and ferromolybdenum, and add ferroniobium and ferrovanadium after molten steel is melted.

[0037] ② After adjusting the ingredients before the furnace, raise the temperature to 1578°C, add aluminum for deoxidation and alloying, and then take it out of the furnace, and add ferrotitanium when it is out of the furnace.

[0038] ③ Ferro-zirconium, ferro-boron and cerium-containing rare earth are crushed into small pieces with a particle size of 10-12 mm. After drying at 180-220 ° C, they are placed at the bottom of the ladle, and the molten steel is subjected to compound modification treatment by the method of pouring into the ladle.

[0039] ④The roller ring is poured by centrifugal casting method, and the pouring temperature of molten steel is 1...

Embodiment 2

[0044] Adopt 250 kilograms of medium-frequency induction furnaces to smelt the roller ring of the present invention, and its manufacturing process steps are:

[0045] The roller ring of the present invention is smelted in an electric furnace, and its manufacturing process steps are:

[0046] ① Mix and heat scrap steel, recarburizer, ferrochromium, metal cobalt and ferromolybdenum, and add ferroniobium and ferrovanadium after molten steel is melted.

[0047] ② Adjust the composition before the furnace and raise the temperature to 1540°C, add aluminum for deoxidation and alloying, and then take it out of the furnace, and add ferro-titanium when it is out of the furnace.

[0048] ③Crush ferro-zirconium, ferro-boron, and lanthanum-cerium mixed rare earth into small pieces with a particle size of 10-12mm. After drying at 180-220°C, place them at the bottom of the ladle, and carry out compound modification treatment on molten steel by pouring into the ladle. .

[0049] ④The roller...

Embodiment 3

[0054] Adopt 500 kilograms of medium-frequency induction furnaces to smelt the roller ring of the present invention, and its manufacturing process steps are:

[0055] ① Mix and heat scrap steel, recarburizer, ferrochromium, metal cobalt and ferromolybdenum, and add ferroniobium and ferrovanadium after molten steel is melted.

[0056] ② After adjusting the ingredients before the furnace, raise the temperature to 1568°C, add aluminum for deoxidation and alloying, and then take it out of the furnace, and add ferrotitanium when it is out of the furnace.

[0057] ③Crush ferro-zirconium, ferro-boron, and lanthanum-cerium mixed rare earth into small pieces with a particle size of 10-12mm. After drying at 180-220°C, place them at the bottom of the ladle, and carry out compound modification treatment on molten steel by pouring into the ladle. .

[0058] ④The roller ring is poured by centrifugal casting method, and the pouring temperature of molten steel is 1451°C.

[0059] ⑤ The roll...

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Abstract

The invention is a high speed steel roll collar applied to a high speed wire rolling mill and a manufacture method thereof. The chemical compositions thereof by mass percent is as follows; C 3.0-3.5, V 5.0-7.0, Cr 4.2-4.5, Mo 9.0-10.0, Co 5.5-8.0, Al 0.4-1.0, Nb 1.5-4.0, Ti 0.10-0.25, B 0.003-0.006, RE 0.08-0.25, Zr 0.06-0.12, Mn more than 0.8 and less than or equal to 1.0, and the remainder being Fe and unavoidable trace impurities. The roll collar of the invention is treated by smelting and deteriorating followed by casting on a centrifugal casting machine. The roll collar is annealed for crude processing, quenched and back fired for fine process. The roll collar of the invention has the characteristics of high hardness, good red hardness and the like, can be applied to high speed wire rolling mill, has good abrasion resistance and equivalent to hard alloy roll collar in terms of use effect, and obviously reduced manufacture cost.

Description

technical field [0001] The invention relates to a method for manufacturing a roll ring for a wire rod mill, in particular to a method for manufacturing a high-speed steel roll ring applied to a high-speed wire rod mill, and belongs to the technical field of steel rolling. Background technique [0002] Wire is not only widely used but also used in a large amount. It occupies an important position in various sectors of the national economy. According to relevant statistics, the output of wire rods in various countries accounts for 5.3% to 15.3% of the total amount of hot-rolled materials. The United States accounts for about 5%, Japan accounts for about 8%, Britain accounts for about 9%, France accounts for about 14%, and my country accounts for about 20%. The use of wire rods can be summarized into two categories: one is that wire rod products are used directly, mainly in the reinforcement of reinforced concrete and welded structural parts. The other is to use the wire rod ...

Claims

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Application Information

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IPC IPC(8): B21B27/03C22C38/36B23P15/00C22C33/06C21C7/06B22D1/00B22D13/00C21D1/26C21D1/18C21D9/40C21D11/00
Inventor 符寒光雷永平邢建东吴中伟林键
Owner BEIJING UNIV OF TECH
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