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A sinking roller and a stabilizing roller

A sinking roll and stabilizing roll technology, applied in coating, metal material coating process, hot-dip coating process, etc., can solve problems such as spray coating failure, cracks, surface groove marks, uneven spangles, etc., and achieve heat resistance Good fatigue performance, low thermal expansion coefficient, and improved service life

Inactive Publication Date: 2015-10-14
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 certain defects such as cracks and lack of density. , and 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
However, 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., resulting in unstable service life of the sinking roller and stabilizing roller after each repair. Frequent replacement and unstable product quality

Method used

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  • A sinking roller and a stabilizing roller
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  • A sinking roller and a stabilizing roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The substrate of sinking roller and stabilizing roller is 00Cr17Ni14Mo2 stainless steel (equivalent to austenitic ultra-low carbon stainless steel SUS316L), and its chemical composition is C≤0.03wt%, Cr 16wt%~18wt%, Ni10wt%~14wt%, Mo 2.00wt% %~3.00wt%, Mn≤2.00wt%, Si≤1.00wt%; the working surface layer of sinking roll and stabilizing roll is cobalt-based alloy, and the composition of cobalt-based alloy is: Cr 25wt%, Ni 0.2wt%, W 15wt% , Mo 3wt%, V 0.01wt%, Ti 0.1wt%, C 0.3wt%, Fe 6wt%, Si 2.0wt%, Mn 3.0wt%, Al 5.0wt%, Nb 5.0wt%, P<0.07wt%, S<0.07wt%, the rest is Co. Among them, the matrix of the sinking roll and the stabilizing roll accounts for 95% of the total thickness, the cobalt-based alloy accounts for 3% of the total thickness, and the transition layer between the matrix and the cobalt-based alloy accounts for 2% of the total thickness.

[0034] The sinking roll of embodiment 1 and the stabilizing roll are used in the same unit as the sinking roll of the prior ar...

Embodiment 2

[0036] The substrate of the sinking roller and the stabilizing roller is made of 1Cr17Mo ferritic heat-resistant stainless steel, and its chemical composition is C≤0.12wt%, Cr 16wt%~18wt%, Mo 0.75wt%~1.25wt%, Mn≤0.8wt%, Si ≤0.8wt%; the material of the working surface layer of the sinking roll and the stabilizing roll is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Cr 20wt%, Ni 10wt%, W 0.2wt%, Mo 5.5wt%, V 3.0wt%, Ti 5.0wt%, C 0.6wt%, Fe 20wt%, Al 5.0wt%, Mn 0.2wt%, Nb 0.02wt%, Si 0.4wt%, P<0.07wt%, S<0.07wt%, the rest is Co. Among them, the matrix of the sinking roll and the stabilizing roll accounts for 50% of the total thickness, the cobalt-based alloy accounts for 49.99% of the total thickness, and the transition layer between the matrix and the cobalt-based alloy accounts for 0.01% of the total thickness.

[0037] The sinking roll and the stabilizing roll of embodiment 2 are used in the same unit as the sinking roll and the stabilizing roll of t...

Embodiment 3

[0039] The matrix of sinking roll and stabilizing roll is austenitic-ferritic stainless steel 0Cr18Ni9Cu3, and its chemical composition is C≤0.08wt%, Si≤1.00wt%, Mn≤2.00wt%, P≤0.035wt%, S≤0.030wt% %, Ni 8.50wt% ~ 10.50wt%, Cr 17.00wt% ~ 19.00wt%, Cu 3.00wt% ~ 4.00wt%; the working surface layer of the sinking roll and the stabilizing roll is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Cr 30wt%, Ni15wt%, W 10wt%, Mo 0.1wt%, V 0.2wt%, Ti 3.0wt%, C 1.5wt%, Fe 12wt%, Al 0.02wt%, Mn 0.7wt%, Nb 3.0wt%, Si 3.0wt%, P<0.07wt%, S<0.07wt%, and the rest is Co. Among them, the matrix of the sinking roll and the stabilizing roll accounts for 76% of the total thickness, the cobalt-based alloy accounts for 14% of the total thickness, and the transition layer between the matrix and the cobalt-based alloy accounts for 10% of the total thickness.

[0040] The sinking roll and the stabilizing roll of embodiment 3 are used in the same unit as the sinking roll and the st...

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PUM

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Abstract

The invention discloses a sink roller and a stabilizing roller. Substrates of the sink roller and the stabilizing roller are made of an iron-based material, and working surface layers are an cobalt-base alloy which comprises the following components in percentage by weight: 10 to 40 percent of Cr, 0.1 to 15 percent of Ni, 0.1 to 15 percent of W, 0.1 to 10 percent of Mo, 0.01 to 5.0 percent of V, 0.01 to 5.0 percent of Ti, 0.01 to 1.5 percent of C, 0.01 to 20 percent of Fe, 0.01 to 5.0 percent of Al, 0.1 to 3.0 percent of Mn, 0.01 to 5.0 percent of Nb, 0.1 to 3.0 percent of Si, and the balance of Co and inevitable impurities. The sink roller and the stabilizing roller work under the conditions of hot-dipped aluminum-zinc liquid, hot dip galvanizing melt, hot dip zinc-aluminum, hot dip pure aluminum liquid and the like, and have good durability, enough strength, elongation, lower coefficient of thermal expansion and low elastic modulus and other good properties of thermal-fatigue resistance, thereby improving the service property of the sink roller and the stabilizing roller and prolonging the service life of the sink roller and the stabilizing roller.

Description

technical field [0001] The invention relates to hot coating equipment in the metallurgical industry, in particular to a sinking roll and a stabilizing roll for hot coating. 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 bushings being in molten zinc. In addition, since the sinking roller and the stabilizing roller are always immersed in zinc liquid, aluminum liquid, zinc-aluminum liquid and other plating solutions, the surface of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/00C22C19/07C22C30/00
Inventor 贺同正武广波
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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