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Compound centrifugal manufacturing method for sink roller or stabilizing roller

A technology of centrifugal compounding and manufacturing method, applied in coating, metal material coating process, hot dip plating process, etc., can solve the problems of spray coating failure, cracks, non-densification, etc.

Inactive Publication Date: 2009-12-09
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, Co-WC or MoB / CoCr-WC is generally sprayed on the roller surface as a corrosion-resistant and wear-resistant layer. Due to the material and spraying process, the corrosion-resistant and wear-resistant layer has some cracks, lack of density, etc. In addition, the penetration ability of the plating solution is strong, it is easy to penetrate through the sprayed coating and corrode the roller surface, causing the sprayed coating to fail, and the defects of the sprayed coating are also easy to stick slag
In the process of use, due to sticky slag and other reasons, it is easy to cause quality defects in the produced products, such as surface groove marks, uneven spangles, etc.
Therefore, the service life of the sinking roll and the stabilizing roll is not stable after each repair, and the replacement is frequent, which makes the product quality unstable, so it is urgent to improve the sinking roll and the stabilizing roll to prolong its service life and improve product quality

Method used

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  • Compound centrifugal manufacturing method for sink roller or stabilizing roller
  • Compound centrifugal manufacturing method for sink roller or stabilizing roller
  • Compound centrifugal manufacturing method for sink roller or stabilizing roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The submerged substrate of the sinking roller manufactured by centrifugal compounding is made of 00Cr17Ni14Mo2 stainless steel, and its chemical composition is C≤0.03wt%, Cr 16wt%~18wt%, Ni 10wt%~14wt%, Mo 2.00wt%~3.00wt%, Mn≤2.00wt% %, Si≤1.00wt%; its working surface layer is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Cr 25wt%, Ni 5wt%, W 3wt%, Mo 3wt%, V 0.1wt%, Ti 0.1wt%, C 0.6wt%, Fe 6wt%, Si 0.5wt%, Mn 0.3wt%, Al 0.5wt%, Nb 1.5wt%, P<0.07wt%, S<0.07wt%, and the rest is Co.

[0035] The manufacturing steps are as follows: ① Smelt 00Cr17Ni14Mo2 raw material molten iron with an electric arc furnace, then use an AOD refining furnace first, and then use a VOD refining furnace to smelt qualified 00Cr17Ni14Mo2 molten metal; use an induction furnace to smelt the chemical composition of Cr 25wt%, Ni 5wt%, W 3wt%, Mo 3wt%, V 0.1wt%, Ti 0.1wt%, C 0.6wt%, Fe 6wt%, Si 0.5wt%, Mn 0.3wt%, Al 0.5wt%, Nb 1.5wt%, P<0.07wt% %, S<0.07wt%, and the rest is ...

Embodiment 2

[0038] The submerged substrate of the sinking roller made by centrifugal compounding is austenitic heat-resistant stainless steel SUS316, and its chemical composition is C≤0.08wt%, Cr 16wt%~18wt%, Ni 10wt%~14wt%, Mo 2.00wt%~3.00wt%, Mn≤2.00wt%, Si≤1.00wt%; the working surface layer is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Cr 20wt%, Ni 3wt%, W 5wt%, Mo 2wt%, V 0.2wt%, Ti 0.2wt%, C 0.6wt%, Fe 12wt%, Al 0.5wt%, Mn 0.7wt%, Nb 1.0wt%, Si 0.4wt%, P<0.07wt%, S<0.07wt%, the rest is Co.

[0039] The manufacturing steps are as follows: ① smelt SUS316 raw material molten iron with electric arc furnace, and then smelt qualified SUS316 molten metal with AOD refining furnace; 0.2wt%, Ti 0.2wt%, C 0.6wt%, Fe 12wt%, Al 0.5wt%, Mn 0.7wt%, Nb 1.0wt%, Si 0.4wt%, P<0.07wt%, S<0.07wt%, The rest is a qualified cobalt-based alloy metal liquid of Co. ②Centrifugally cast the outer layer of cobalt-based alloy metal liquid with a centrifugal casting machine, and when ...

Embodiment 3

[0042] The bottom substrate of the stabilizing roller manufactured by centrifugal compounding is heat-resistant stainless steel ZG07Cr19Ni9, and its chemical composition is C 0.07wt%, Cr 18%-21wt%, Ni 8.0wt%-11.0wt%, Mn 1.5wt%, Si1.5wt%, P ≤0.040wt%, S≤0.030wt%; the working surface layer is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Cr 26wt%, Ni 3wt%, W 5wt%, Mo 2wt%, V 0.2wt%, Ti 0.2 wt%, C 1.5wt%, Fe 12wt%, Al 0.8wt%, Mn 0.7wt%, Nb 1.0wt%, Si 1.0wt%, P<0.07wt%, S<0.07wt%, and the rest is Co.

[0043]The manufacturing steps are as follows: ① use electric arc furnace to smelt ZG07Cr19Ni9 raw material molten iron, and then use ladle refining furnace to smelt qualified ZG07Cr19Ni9 molten metal; use vacuum induction furnace to smelt chemical composition of Cr26wt%, Ni 3wt%, W 5wt%, Mo 2wt%, V 0.2wt%, Ti 0.2wt%, C 1.5wt%, Fe 12wt%, Al 0.8wt%, Mn 0.7wt%, Nb 1.0wt%, Si1.0wt%, P<0.07wt%, S<0.07wt%, The rest is a qualified cobalt-based alloy metal liquid ...

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Abstract

The invention discloses a compound centrifugal manufacturing method for a sink roller or stabilizing roller, which comprises the following steps: smelting molten metal of an iron-based material and molten metal of a cobalt-base alloy in two smelting furnaces respectively; performing deslagging and deoxidation treatment after the melting down of the molten metal of the iron-based material and the molten metal of the cobalt-base alloy; performing centrifugal casting on the outer layer molten metal of the cobalt-base alloy first, and adding an acid slag protective agent along with the outer layer molten metal of the cobalt-base alloy when the outer layer molten metal of the cobalt-base alloy is cast to 20 to 30 percent of the gross weight of the outer layer molten metal of the cobalt-base alloy needing to be cast; after the outer layer molten metal of the cobalt-base alloy is cast and the outer layer molten metal of the cobalt-base alloy is solidified, casting the inner layer molten metal of the iron-based material until finishing; and under the action of centrifugal force, cooling and solidifying the inner layer molten metal and the outer layer molten metal into a blank of a compound centrifugal sink roller or a stabilizing roller.

Description

technical field [0001] The invention relates to a manufacturing method of a sinking roll or a stabilizing roll, in particular to a centrifugal composite manufacturing method of a sinking roll or a stabilizing roll. Background technique [0002] Due to the high production efficiency of the hot coating process, it has been widely used in metallurgy and coated steel plate industries. The hot-dip process includes hot-dip galvanized (GL), hot-dip galvanized (GI), hot-dip galvanized aluminum, and hot-dip pure aluminum. Taking the hot-dip galvanizing process as an example, when the steel strip is continuously hot-dip galvanized, the steel strip passes through the sinking roller immersed in the zinc solution to change the direction of movement. Severe molten zinc corrosion usually occurs due to sinking rolls and stabilizing rolls being in molten zinc. In addition, since the sinking roller and the stabilizing roller are always immersed in zinc liquid, aluminum liquid, zinc-aluminum...

Claims

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Application Information

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IPC IPC(8): B22D13/00B22D19/16C23C2/00C22C19/07C22C30/00
Inventor 贺同正武广波
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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