Corrosion-resisting alloy for immersion piece of hot-dip galvanized pan

A corrosion-resistant alloy and hot-dip galvanizing technology, applied in the field of metallurgical industry, can solve the problems of increased labor intensity, poor corrosion resistance, short service life, etc., to avoid pits and pitting corrosion, reduce production costs, and extend continuous time Effect

Inactive Publication Date: 2010-02-03
黄石山力大通热工设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the zinc pot immersion parts made of existing materials have poor corrosion resistance, short service life, high replacement frequency, affect production and increase labor intensity, and provide a hot-dip galvanized zinc pot immersion part. Corrosion Resistant Alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Example 1: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 0.10kg, Si 1.00kg, Mn 1.00kg, P 0.05kg, S 0.02kg, Cr175.00kg, Ni 90.00kg, Mo 20.00kg, the rest is Fe and trace impurities. After all the ingredients are melted in the furnace, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. If there is any deviation in the ingredients, it should be adjusted until it is qualified. The composition is qualified, the molten steel is deoxidized well, and the steel preparation can be made after the temperature meets the process requirements. The mechanical properties of the alloy at room temperature are σS (Mpa) ≥ 205, σb (Mpa) ≥ 485, δ5 (%) ≥ 30, and the hardness (HB) is 190-230.

[0013] According to the needs of users, the alloy of the present invention can be cast into pouring pipes by centrifugal casting, and can also be cast into static castin...

example 2

[0014] Example 2: Melting in a 1 ton medium frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 0.40kg, Si 10.00kg, Mn 9.00kg, P 0.10kg, S 0.05kg, Cr 195.00kg, Ni 110.00kg, Mo 25.00kg, the rest is Fe and trace impurities. After all the ingredients are melted in the furnace, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. If there is any deviation in the ingredients, it should be adjusted until it is qualified. The composition is qualified, the molten steel is deoxidized well, and the steel preparation can be made after the temperature meets the process requirements. The mechanical properties of the alloy at room temperature are σs (Mpa) ≥ 205, σb (Mpa) ≥ 485, δ5 (%) ≥ 30, and the hardness (Hb) is 190-230.

[0015] According to the needs of users, the alloy of the present invention can be cast into pouring pipes by centrifugal casting, and can also be cast into static cas...

example 3

[0016] Example 3: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 0.80kg, Si 15.00kg, Mn 15.00kg, P 0.28kg, S 0.28kg, Cr 220.00kg, Ni 130.00kg, Mo 30.00kg, the rest is Fe and trace impurities. After all the ingredients are melted in the furnace, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. If there is any deviation in the ingredients, it should be adjusted until it is qualified. The composition is qualified, the molten steel is deoxidized well, and the steel preparation can be made after the temperature meets the process requirements. The mechanical properties of the alloy at room temperature are σS (Mpa) ≥ 205, σb (Mpa) ≥ 485, δ5 (%) ≥ 30, and the hardness (HB) is 190-230.

[0017] According to the needs of users, the alloy of the present invention can be cast into pouring pipes by centrifugal casting, and can also be cast into static ca...

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Abstract

The invention relates to metallurgical industry, and provides a corrosion-resisting alloy for an immersion piece of a hot-dip galvanized pan, which comprises the following chemical components in percentage by weight: less than or equal to 0.08 percent of C, less than or equal to 1.50 percent of Si, less than or equal to 1.50 percent of Mn, less than 0.03 percent of P, less than 0.03 percent of S,17.50 to 22.00 percent of Cr, 9.00 to 13.00 percent of Ni, 2.00 to 3.00 percent of Mo, and the balance of Fe and trace impurities. The corrosion-resisting alloy for the immersion piece of the hot-dipgalvanized pan overcomes the disadvantages of susceptibility to corrosion and short service life of the galvanized pan made of the prior common used steel, has the advantages of Ai, Zn and Si alloy solution resistance, strong strength of intermediate temperature, and the like, is mainly used for manufacturing immersion pieces of galvanized pans in thin plate galvanizing production lines or dip Al-Zn-Si production lines such as immersion rollers, stabilizing rollers and supporting arms, as well as spare parts of anti-intermediate temperature corrosion equipment.

Description

(1) Technical field: [0001] The invention relates to the metallurgical industry, and relates to a corrosion-resistant alloy for hot-dip galvanized zinc pot immersion parts. (two) background technology: [0002] With the development of industry and construction industry, thin plate galvanizing is widely used in various industries, and the demand is increasing year by year. The provinces of our country are still building hot-dip galvanizing production lines. In the hot-dip galvanizing production line, the immersion in the zinc pot Parts (i.e. sinking rolls, stabilizing rolls, support arms, bushings, etc.) are very important in a hot-dip galvanizing production line. The quality of these parts affects the quality of the galvanized sheet; the second affects the output and benefit. In the past, these immersion parts were produced with brands such as ZG30Cr25Ni20 or ZG40Cr22Ni14. After being used online, defects such as surface corrosion pits, microcracks, and deformation appear....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44
Inventor 李土振吴永华陈海见阮志刚贾成涛
Owner 黄石山力大通热工设备有限公司
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