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Production process for optimizing purity of corrosion-resistant alloy

A corrosion-resistant alloy and production process technology, which is applied in the field of corrosion-resistant alloy purity optimization production process, can solve the problems of poor stability of alloy performance level, low purity of corrosion-resistant alloy, etc., achieve fine-cast structure and improve seawater resistance Corrosion performance, effect of improving physical properties

Inactive Publication Date: 2021-12-10
AVIC SHANGDA METAL REGENERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity of corrosion-resistant alloys produced by traditional processes is low, which leads to poor overall performance levels and stability of the alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a technical solution: a process for optimizing the purity of corrosion-resistant alloys, comprising the following steps:

[0025] Step 1: In the annealing step of the raw material, the temperature of the first zone is 1050°C, the temperature range of the second zone is 1120°C, the temperature range of the third zone is 1120°C, the temperature range of the fourth zone is 1120°C, the temperature range of the fifth zone is 1120°C, and the temperature range of the sixth zone is The range is 1180°C;

[0026] Step 2: the pickling step of the raw material. The pickling step of the raw material is to pickle the slab after the annealing step of the raw material with a mixed acid, and the mixed acid is made of sulfuric acid, hydrochloric acid, nitric acid and water. And the mass fraction proportioning of sulfuric acid, hydrochloric acid, nitric acid is 2:3:1;

[0027] Step 3: the pre-press rolling step, the rolling pass of the pre-press rolling step is 18 ...

Embodiment 2

[0035] The invention provides a technical solution: a process for optimizing the purity of corrosion-resistant alloys, comprising the following steps:

[0036] Step 1: In the annealing step of the raw material, the temperature of the first zone is 1050°C, the temperature range of the second zone is 1120°C, the temperature range of the third zone is 1120°C, the temperature range of the fourth zone is 1120°C, the temperature range of the fifth zone is 1120°C, and the temperature range of the sixth zone is The range is 1180°C;

[0037] Step 2: the pickling step of the raw material. The pickling step of the raw material is to pickle the slab after the annealing step of the raw material with a mixed acid, and the mixed acid is made of sulfuric acid, hydrochloric acid, nitric acid and water. And the mass fraction proportioning of sulfuric acid, hydrochloric acid, nitric acid is 2:3:1;

[0038] Step 3: the pre-press rolling step, the rolling pass of the pre-press rolling step is 18 ...

Embodiment 3

[0046] The invention provides a technical solution: a process for optimizing the purity of corrosion-resistant alloys, comprising the following steps:

[0047] Step 1: In the annealing step of the raw material, the temperature of the first zone is 1050°C, the temperature range of the second zone is 1120°C, the temperature range of the third zone is 1120°C, the temperature range of the fourth zone is 1120°C, the temperature range of the fifth zone is 1120°C, and the temperature range of the sixth zone is The range is 1180°C;

[0048] Step 2: the pickling step of the raw material. The pickling step of the raw material is to pickle the slab after the annealing step of the raw material with a mixed acid, and the mixed acid is made of sulfuric acid, hydrochloric acid, nitric acid and water. And the mass fraction proportioning of sulfuric acid, hydrochloric acid, nitric acid is 2:3:1;

[0049] Step 3: the pre-press rolling step, the rolling pass of the pre-press rolling step is 18 ...

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PUM

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Abstract

The invention provides a production process for optimizing purity of corrosion-resistant alloy. The production process comprises the following steps: 1, annealing raw materials; 2, pickling the raw materials; 3, carrying out pre-pressing rolling; 4, carrying out coping; 5, carrying out a secondary rolling; 6, carrying out primary heat treatment; 7, carrying out rolling for the third time; and 8, carrying out secondary heat treatment. The niobium element is added into the alloy, a trace amount of niobium is added into the alloy, stable refractory compounds can be formed, growth of austenite grains is strongly hindered, as-cast structures are refined, improvement of the mechanical property of the alloy is facilitated, in addition, the niobium element can promote the charge transfer resistance of the alloy to be increased along with prolonging of corrosion time in the seawater corrosion process, so that the seawater corrosion resistance of the alloy is improved, and after the annealing step of the raw materials, the casting blank is subjected to acid pickling, so that an oxide layer on the surface of the casting is cleaned, and the physical property of the casting blank is effectively improved.

Description

technical field [0001] The invention relates to the field of electrolytic copper foil surface treatment, in particular to a production process for optimizing the purity of corrosion-resistant alloys. Background technique [0002] Metal corrosion-resistant materials, compared with non-metallic corrosion-resistant materials, metal corrosion-resistant materials mainly include iron-based alloys (corrosion-resistant stainless steel); nickel-based alloys (Ni-Cr alloys, Ni-Cr-Mo alloys, Ni-Cu alloys, etc. ); active metals, in industry, according to the above principles, a series of corrosion-resistant alloys are obtained by alloying methods. Generally, there are three corresponding methods: 1. Improve the thermodynamic stability of metals or alloys, that is, add alloy elements with high thermodynamic stability to the original non-corrosion-resistant metals or alloys to form solid solutions and increase the electrode potential of the alloy to enhance the corrosion resistance. corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/50C22C38/54C22C38/60C23G1/08B08B1/00C21D8/00
CPCC22C38/02C22C38/04C22C38/44C22C38/42C22C38/50C22C38/54C22C38/48C22C38/60C22C38/002C22C38/005C22C33/04C21D8/005B08B1/00C23G1/085
Inventor 闫森栾吉哲李爱民田水仙张欢欢刘猛
Owner AVIC SHANGDA METAL REGENERATION TECH
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