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A large and wide aluminum alloy ribbed plate and its production method and extrusion perforating needle

A technology of aluminum alloy strips and production methods, applied in furnaces, heat treatment equipment, manufacturing tools, 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., to achieve Improve the mechanical properties of the product, ensure the strength of use, and improve the effect of dimensional accuracy

Active Publication Date: 2021-11-09
NORTHEASTERN UNIV LIAONING
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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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  • A large and wide aluminum alloy ribbed plate and its production method and extrusion perforating needle
  • A large and wide aluminum alloy ribbed plate and its production method and extrusion perforating needle
  • A large and wide aluminum alloy ribbed plate and its production method 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 Φ545 mm.

[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 ex...

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 ingo...

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Abstract

A large-width aluminum alloy ribbed plate, a production method thereof and an extrusion perforating needle belong to the field of aluminum alloy material processing. In the production method of the large-width aluminum alloy ribbed plate, casting, preheating, and extrusion are made into an aluminum alloy ribbed pipe material, which is cut and flattened after quenching, and then heat-treated to obtain an ultra-wide and high-strength pipe that meets the requirements of the hull. 1. A large and wide aluminum alloy ribbed plate with high corrosion resistance; and an extrusion perforation needle is provided for extrusion, and the performance can be further improved compared with the aluminum alloy solid ingot extrusion. This production method can avoid the welding passes of friction stir welding used in the existing process in order to realize the mass production of large and wide aluminum alloy ship plates, reduce the number of welds, greatly improve the overall strength and sealing of ships, reduce production costs, and improve production efficiency.

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 Patents(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 LIAONING
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