Production process of N06600 iron-nickel base alloy hot continuous rolling plate coil

An iron-nickel-based alloy and production process technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve problems such as pollution, sulfuric acid is not easy to volatilize, yield and dimensional accuracy are low, so as to reduce pollution, reduce The effect of improving the energy consumption, yield and dimensional accuracy of the production process

Inactive Publication Date: 2022-07-12
山东盛阳金属科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy has strong corrosion resistance to acid and alkali solutions, especially in chloride ion solutions, it has stronger stress corrosion resistance than other metals, and is widely used in shipbuilding, pressure vessels, petrochemicals, heat exchangers and other industries; existing The production method of N06600 coils has high energy consumption and low production efficiency, and hot-rolled coils are prone to edge cracks, and the yield and dimensional accuracy are low; in the existing pickling process, the pickling process of N06600 coils Sulfuric acid is often used in the pickling process to add it to the pickling process, but sulfuric acid is not easy to volatilize, it will affect the pH of the original solution, and it is easy to cause follow-up pollution, etc., so a production method using hot continuous rolling in the present invention is needed to improve the yield and production efficiency, reducing energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A process for producing N06600 iron-nickel-based alloy hot continuous rolling coil, the steps are as follows:

[0021] 1) Prepare the above-mentioned component raw materials for heating in a heating furnace, the thickness of the slab is 235mm; in the preheating section, the temperature is controlled at 700-750 ° C, and the heating time is set to 60min; after the preheating section is completed, enter the heating section for heating, and the temperature is controlled at 1020-1060℃, the heating time is set to 45min; after the first stage of heating is completed, enter the second stage of heating, the temperature is controlled at 1150-1180℃, and the heating time is set to 55min; after the second stage of heating is completed, enter the soaking section, and the temperature is controlled at 1160- 1175 ℃, the heating time is set to 35min; the high temperature section includes the second heating section and the soaking section, the high temperature section time is 90min, and th...

Embodiment 2

[0031] Compared with Example 1, the difference is:

[0032] Step 1) Heating: prepare the above-mentioned components and raw materials for heating in a heating furnace, the thickness of the slab is 230mm, and the heating steps are divided into a preheating section, a heating section, a second heating section, and a soaking section; in the preheating section, the temperature is controlled at 705 ℃, the heating time is set to 65min; after the preheating section is completed, enter the heating section of heating, the temperature is controlled at 1058 ℃, and the heating time is set to 45min; After the second stage of heating is completed, enter the soaking section, the temperature is controlled at 1170 ° C, and the heating time is set to 40min;

[0033] Step 2) Rough rolling: during rough rolling, the slab is rolled for 5 passes; the reduction rate of one pass is 26.05%; the reduction rate of two passes is 28.10%; the reduction rate of three passes is 29.05%; The secondary reducti...

Embodiment 3

[0037] Compared with Example 1, the difference is:

[0038] Step 1) Heating: prepare the above-mentioned components and raw materials for heating in a heating furnace, the thickness of the slab is 240mm, and the heating steps are divided into a preheating section, a heating section, a second heating section, and a soaking section; in the preheating section, the temperature is controlled at 700-750 ℃, the heating time is set to 60min; after the preheating section is completed, enter the heating section of the heating, the temperature is controlled at 1020-1060 ℃, and the heating time is set to 45min; 1180℃, the heating time is set to 60min; after the second heating stage is completed, enter the soaking section, the temperature is controlled at 1160-1175℃, and the heating time is set to 35min; the high temperature section includes the second heating section and the soaking section, and the high temperature section time is 95min, The total time in the furnace was 200min.

[0039...

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Abstract

The N06600 iron-nickel base alloy hot continuous rolling plate coil production process comprises the following steps that (1) a steel billet is prepared and transferred to a heating furnace to be heated, and the thickness of the steel billet ranges from 220 mm to 240 mm; (2) rough rolling is conducted, specifically, the heated plate blank is conveyed to a rough rolling machine through a conveying roller; 3) finish rolling: conveying into a finish rolling mechanism; 4) coiling: after finish rolling, feeding into a coiling mechanism for coiling; (5) uncoiling and welding; (6) annealing is conducted, specifically, the alloy plate is subjected to annealing treatment through an annealing mechanism and then cooled; (7) phosphorus breaking and shot blasting; the annealed alloy plate is subjected to shot blasting treatment through a shot blasting machine; 8) pickling; and 9) cleaning and drying. The method can improve the yield and the production efficiency and reduce the energy consumption.

Description

technical field [0001] The invention belongs to the technical field of iron-nickel-based alloy production, in particular to a production process of N06600 iron-nickel-based alloy hot continuous rolling coil. Background technique [0002] The nominal chemical composition of N06600 alloy is 1Cr15Ni75Fe8, which is a high temperature and corrosion resistant alloy. The alloy has strong corrosion resistance to acid and alkali solutions, especially in chloride ion solution, and has stronger stress corrosion resistance than other metals. It is widely used in shipbuilding, pressure vessels, petrochemicals, heat exchangers and other industries; existing The production method of the new N06600 coil has high energy consumption and low production efficiency. The hot-rolled coil is prone to edge cracking, and the yield and dimensional accuracy are low. In the existing pickling process, the pickling process of the N06600 coil is Sulfuric acid is often used to join the pickling process, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/42C22C38/06C21D8/02C21D1/26C23G1/08C23F17/00B21B37/74B21B1/26B21B45/02B21B45/06B21B3/02
CPCC22C38/04C22C38/001C22C38/02C22C38/42C22C38/06C21D8/0205C21D8/0226C21D8/0247C21D1/26C23G1/086C23F17/00B21B37/74B21B1/26B21B45/0287B21B45/06B21B3/02Y02P70/10
Inventor 周嘉晟冯旺爵肖亮明丁疆
Owner 山东盛阳金属科技股份有限公司
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