Guide and guard roller for guiding steel billet in high speed wire rolling machine and its making process

A high-speed wire rod and guide roller technology, applied in the field of steel rolling, can solve the problems of complex preparation process of ceramic guide roller, easy brittle cracking and peeling, poor thermal fatigue performance, etc., and achieves high strength and toughness, low production cost, high temperature and so on. Good abrasion resistance

Inactive Publication Date: 2006-10-18
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the ceramic guide roller is complicated, and the material is brittle, and t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] The guide roller of the present embodiment is smelted in a 500kg intermediate frequency induction furnace, and its manufacturing process steps are:

[0031] (1) Mix common steel scrap, pig iron, ferrotungsten, ferrovanadium, ferrochrome, ferroboron, ferromolybdenum, ferrosilicon and ferromanganese by heating and melting.

[0032] (2) After the composition is adjusted before the furnace, the temperature is raised to 1590°C, and 0.12% of the total amount of molten steel is added for deoxidation, and then it is released from the furnace.

[0033] (3) Break the magnesium-containing modifier, rare earth ferrosilicon and ferrotitanium into small pieces with a particle size of less than 18mm, and after drying at 230°C, place it at the bottom of the ladle, and perform compound modification treatment on molten steel by pouring into the ladle .

[0034] (4) The guide roller is poured by the lost foam casting method, and the molten steel pouring temperature i...

Example Embodiment

[0039] Example 2:

[0040] The guide roller of the present embodiment is smelted in a 300kg intermediate frequency induction furnace, and its manufacturing process steps are:

[0041] (1) Mix common steel scrap, pig iron, ferrotungsten, ferrovanadium, ferrochrome, ferroboron, ferromolybdenum, ferrosilicon and ferromanganese by heating and melting.

[0042] (2) After the composition is adjusted before the furnace, the temperature is raised to 1570°C, and 0.10% of the total amount of molten steel is added for deoxidation, and then it is released from the furnace.

[0043] (3) Crush the magnesium-containing modifier, rare earth ferrosilicon and ferrotitanium into small pieces with a particle size of less than 18mm, and after drying at 240°C, place them at the bottom of the ladle, and perform compound modification treatment on molten steel by pouring into the ladle .

[0044] (4) The guide roller is poured by wax mold precision casting method, and the pouring temperature of molt...

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PUM

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Abstract

The present invention discloses one kind of guide and guard roller for guiding steel billet in high speed wire rolling machine and its making process. Chemically, the guide and guard roller has material comprising C 0.7-1.4 wt%, Wt% 7.0-10.0 wt%, V 0.8-1.5 wt%, Cr,5.0-10.0 wt%, B 1.2-2.5 wt%, Mo<1.5 wt%, Si<1.5 wt%, Mn<1.5 wt%, RE 0.08-0.18 wt%, Mg 0.05-0.15 wt%, Ti 0.08-0.20 wt%, S<0.05 wt%, and P<0.05 wt%, except Fe and inevitable impurity. The guide and guard roller is made through electric furnace smelting and precise wax mold casting or evanescent mold casting. It has high strength, high toughness, high wear resistance, high fatigue and oxidation resistance, high quick cooling and heating resistance, and use performance obviously higher than that of high Ni-Cr cast steel guide and guard roller.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and relates to a guide roller and a preparation method thereof, in particular to a guide roller for introducing billets into various high-speed wire rolling mills and a preparation method thereof. Background technique [0002] For continuous bar and wire rolling mills, rolling guide devices are mostly used at the entrance and exit of intermediate and finishing mills. Due to the harsh operating environment, guide rollers have become the main vulnerable parts. In addition, since modern high-speed rolling mills have high requirements on the dimensional accuracy of the guide rollers, the consumption of the guide rollers is large. In high-line production, the rolling speed is generally above 50m / s, and the rotation speed of imported guide rollers is as high as 260r / s or above. During rolling, the guide rollers have to withstand high temperature (about 1000°C), sliding a...

Claims

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Application Information

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IPC IPC(8): C22C38/28B22D11/14C21C7/00C21C7/06C21D1/18C21D1/26C21D9/36C21D11/00C22C33/04
Inventor 蒋志强符寒光施进发
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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