A low-anisotropy aluminum-lithium alloy rod and production method thereof

Abstract

The invention relates to a low-anisotropy high-weldability high-strength aluminum-lithium alloy bar and a production method thereof. The aluminum-lithium alloy bar is composed of the following components in percentage by weight: 6-7.5 wt% of lithium, 4-6 wt% of copper, 0.1-0.3 wt% of magnesium, 0.4-0.8 wt% of tin, 0.2-0.4 wt% of zinc, 0.05-0.3 wt% of manganese, 0.2-0.4 wt% of lanthanum and cerium and the balance of aluminum. By enhancing the content of the metallic lithium in the alloy and preferably adding the metallic copper, magnesium, tin, zinc, manganese, lanthanum and cerium, the aluminum-lithium alloy bar has the advantages of low anisotropy, high weldability, high strength and greatly lower manufacturing cost. The aluminum-lithium alloy bar can be widely used in the aspects of machine manufacturing, conveying machinery, power machinery, aviation industry and the like.

Description

technical field

[0001] The invention relates to an aluminum-lithium alloy rod and a production method thereof, in particular to an aluminum-lithium alloy rod with low anisotropy, weldability and high strength and a production method thereof. Background technique

[0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for high-strength aluminum alloy welded structural parts is increasing.

[0003] Due to the low density of aluminum alloy, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, it is widely used in industry, and its usage is second only to...

Examples

Embodiment 1

[0024] Embodiment 1 Preparation of aluminum-lithium alloy rod of the present invention

[0025] Batching smelting: prepare the materials according to: lithium 6wt%, copper: 6wt%, magnesium: 0.1wt%, tin 0.4wt%, zinc: 0.2wt%, manganese 0.05wt%, lanthanum and cerium: 0.2wt%, remaining The amount is the mass ratio of aluminum and put into the smelting furnace, the temperature of the smelting furnace is controlled at 750° C., and the time is 2 hours.

[0026] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0027] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0028] Extru...

Embodiment 2

[0034] Embodiment 2 Preparation of aluminum-lithium alloy rod of the present invention

[0035] Batching smelting: the prepared materials are prepared according to: lithium 7.5wt%, copper: 5wt%, magnesium 0.2wt%, tin 0.6wt%, zinc 0.3wt%, manganese 0.175wt%, lanthanum and cerium 0.3wt%, the balance is The mass ratio of aluminum is put into the smelting furnace, and the temperature of the smelting furnace is controlled at 800° C. for 1.5 hours.

[0036] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0037] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0038] Extrusio...

Embodiment 3

[0045] Embodiment 3 Preparation of aluminum-lithium alloy rod of the present invention

[0046] Batching smelting: prepare the materials according to: lithium 6.75wt%, copper: 4.0wt%, magnesium 0.3wt%, tin 0.8wt%, zinc 0.4wt%, manganese 0.3wt%, lanthanum and cerium 0.4wt%, the balance The mass ratio of aluminum is put into the smelting furnace, and the temperature of the smelting furnace is controlled at 800° C. for 2 hours.

[0047] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0048] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0049] Extrusion molding: the ing...

technical field

[0001] The invention relates to an aluminum-lithium alloy rod and a production method thereof, in particular to an aluminum-lithium alloy rod with low anisotropy, weldability and high strength and a production method thereof. Background technique

[0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for high-strength aluminum alloy welded structural parts is increasing.

[0003] Due to the low density of aluminum alloy, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, it is widely used in industry, and its usage is second only to...

Examples

Embodiment 1

[0024] Embodiment 1 Preparation of aluminum-lithium alloy rod of the present invention

[0025] Batching smelting: prepare the materials according to: lithium 6wt%, copper: 6wt%, magnesium: 0.1wt%, tin 0.4wt%, zinc: 0.2wt%, manganese 0.05wt%, lanthanum and cerium: 0.2wt%, remaining The amount is the mass ratio of aluminum and put into the smelting furnace, the temperature of the smelting furnace is controlled at 750° C., and the time is 2 hours.

[0026] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0027] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0028] Extru...

Embodiment 2

[0034] Embodiment 2 Preparation of aluminum-lithium alloy rod of the present invention

[0035] Batching smelting: the prepared materials are prepared according to: lithium 7.5wt%, copper: 5wt%, magnesium 0.2wt%, tin 0.6wt%, zinc 0.3wt%, manganese 0.175wt%, lanthanum and cerium 0.3wt%, the balance is The mass ratio of aluminum is put into the smelting furnace, and the temperature of the smelting furnace is controlled at 800° C. for 1.5 hours.

[0036] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0037] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0038] Extrusio...

Embodiment 3

[0045] Embodiment 3 Preparation of aluminum-lithium alloy rod of the present invention

[0046] Batching smelting: prepare the materials according to: lithium 6.75wt%, copper: 4.0wt%, magnesium 0.3wt%, tin 0.8wt%, zinc 0.4wt%, manganese 0.3wt%, lanthanum and cerium 0.4wt%, the balance The mass ratio of aluminum is put into the smelting furnace, and the temperature of the smelting furnace is controlled at 800° C. for 2 hours.

[0047] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0048] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

[0049] Extrusion molding: the ing...

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