Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle

A technology of aluminum alloy strips and production methods, applied in the direction of furnace types, furnaces, heat treatment furnaces, etc., can solve the problems of poor mechanical properties and corrosion resistance of 5-series aluminum alloys for ships, and the inability to produce ribbed plates for ships, etc.

Active Publication Date: 2021-03-26
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, in order to solve the problem that existing extrusion production equipment cannot produce ribbed plates for ships with a width of more than 800 mm or even a super wide width of 1500 mm or more, the mechanical properties and corrosion resistance of 5 series aluminum alloys for ships are poor. Problem, provide a large and wide aluminum alloy ribbed plate and its production method and extrusion perforation needle

Method used

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  • Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle
  • Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle
  • Large-width aluminum alloy ribbed plate, production method thereof and extrusion perforating needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] In this example, an extruded perforating needle for the preparation of large and wide aluminum alloy ribbed panels is used, and its structural schematic diagram is shown in figure 1 , including a solid connecting shaft 101, the solid connecting shaft 101 is covered with an integrated extrusion pad 102, the two sides of the solid connecting shaft 101 are respectively screwed with the extrusion rod 104 and the extrusion follower pin 103, and the solid connecting shaft 101, extrusion The rod 104 and the extrusion follower pin 103 are coaxial, and the extrusion follower needle 103 is a hollow cylindrical structure with an outer diameter of Φ545mm.

[0095] A 20° chamfer 1032 is provided at the end of the extruding follower pin 103 away from the solid connecting shaft 101, and an annular overpressure step 1031 is provided at the root of the extruding follower pin 103 close to the solid connecting shaft 101. The outer diameter of the overpressure step 1031 is Thicker than ext...

Embodiment 2

[0109] A method for producing a large and wide aluminum alloy ribbed plate, comprising the steps of:

[0110] S1. Ingredients: Prepare aluminum alloy raw materials according to the following weight ratios, Si: 0.05%, Fe: 0.13%, Cu: 0.01%, Mn: 1.0%, Mg: 6.3%, Ti: 0.08%, Zr: 0.06%, Zn: 0.02%, the balance is Al and unavoidable impurities, among which, a single element in the impurity: ≤0.05%, the total of impurity elements: ≤0.15%;

[0111] S2. Melting and casting: Add the prepared aluminum alloy raw materials into the melting furnace in the order of small material first, large material first, high melting point first, and then low melting point. After melting, the aluminum alloy melt is poured into the mold for casting to obtain aluminum alloy casting. ingot;

[0112] S3. Boring and sawing: Bore the aluminum alloy ingot to make a hollow aluminum alloy ingot. The inner diameter of the ingot is Ingot outer diameter

[0113] S4. Preheating: Divide the aluminum alloy hollow in...

Embodiment 3

[0123] A method for producing a large and wide aluminum alloy ribbed plate, comprising the steps of:

[0124] S1. Ingredients: prepare aluminum alloy raw materials according to the following weight ratios, Si: 0.07%, Fe: 0.15%, Cu: 0.05%, Mn: 0.9%, Mg: 6.5%, Ti: 0.06%, Zr: 0.05%, Zn: 0.01%, the balance is Al and other unavoidable impurities, single impurity element: ≤0.05%, total impurity elements: ≤0.15%;

[0125] S2. Melting and casting: Add the prepared aluminum alloy raw materials into the melting furnace in the order of small material first, large material first, high melting point first, and then low melting point. After melting, the aluminum alloy melt is poured into the mold for casting to obtain aluminum alloy casting ingot;

[0126] S3. Boring and sawing: Bore the aluminum alloy ingot to make a hollow aluminum alloy ingot. The inner diameter of the ingot is Ingot outer diameter

[0127] S4. Preheating: Divide the cross section of the aluminum alloy hollow ingot...

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Abstract

The invention discloses a large-width aluminum alloy ribbed plate, a production method thereof and an extrusion perforating needle, and belongs to the field of aluminum alloy material processing. Theproduction method of the large-width aluminum alloy ribbed plate comprises the steps that an aluminum alloy ribbed pipe is manufactured through casting, preheating and extrusion, cutting and flattening are conducted after quenching, then heat treatment is conducted, and the ultra-wide, high-strength and high-corrosion-resistance large-width aluminum alloy ribbed plate used for a ship body is obtained. In addition, an extrusion perforating needle is provided for extrusion, and compared with extrusion of an aluminum alloy solid cast ingot, the performance can be further improved. According to the production method, the welding pass of friction stir welding adopted in order to achieve large-width aluminum alloy ship plate batch production in the prior art can be avoided, the number of weld joints is reduced, the overall strength and sealing performance of a ship are greatly improved, the production cost is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy material processing, in particular to a large and wide aluminum alloy ribbed plate, a production method thereof, and an extrusion perforating needle. Background technique [0002] The working environment of the ship requires its structural materials to have comprehensive properties such as high strength, high toughness, high corrosion resistance, fatigue resistance, impact resistance and good weldability, especially for ships driving in the marine environment, because seawater contains a large amount of Cl － , is a typical electrolytic solution with strong corrosiveness. Under such a strong corrosive environment and stress, marine materials are required to have excellent resistance to electrochemical corrosion and stress corrosion resistance. [0003] Due to the high strength and corrosion resistance of aluminum alloys, excellent formability and weldability, easy recycling and anti-aging characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21C23/21C21D9/00C21D9/08C22C21/08C22F1/047
CPCB21C23/212B21C37/02C21D9/0081C21D9/085C22C21/08C22F1/002C22F1/047
Inventor 李鹏伟王向杰蒋敏
Owner NORTHEASTERN UNIV
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