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Continuous casting and continuous rolling production process for 5356 aluminum alloy welding rods

A production process, continuous casting and rolling technology, applied in the direction of metal rolling, etc., can solve the problems of affecting the quality of welds, time-consuming and labor-intensive, increasing energy consumption, etc., to achieve the effect of reducing joints and avoiding performance degradation

Inactive Publication Date: 2018-07-20
江苏和拓铝线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country mainly adopts the semi-continuous casting-extrusion method to produce wire rods for 5356 aluminum alloy welding wires, and the wire rods are continuously stretched into welding wires. The quality of welding wires produced in this way is unstable, which seriously affects the quality of welds.
Moreover, after semi-continuous casting, ingot homogenization annealing is required, which is time-consuming and labor-intensive, increasing energy consumption

Method used

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  • Continuous casting and continuous rolling production process for 5356 aluminum alloy welding rods
  • Continuous casting and continuous rolling production process for 5356 aluminum alloy welding rods
  • Continuous casting and continuous rolling production process for 5356 aluminum alloy welding rods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Product Chemical Composition

[0052]

[0053] (1) Melting: a. Melting and alloying of aluminum ingots. Add 8 tons of aluminum ingots with a percentage of Al99.90% into the aluminum melting furnace. The melting temperature is 750 ° C. After the aluminum material is completely melted, the aluminum melt is removed from the melting The aluminum furnace is transferred to the holding furnace, and the intermediate alloy is added sequentially to the holding furnace while stirring according to the designed amount of the intermediate alloy. Cr and Mn are added in the form of master alloy Al-20%Cr, Al-20%Mn.

[0054] b. Purify the alloyed melt in the holding furnace for degassing, impurity removal, slag removal, covering, heat preservation and standing. The specific refining methods are: powder spraying refining and bottom blowing high-purity N 2 or Ar 2 refining. After the aluminum melt is refined and slag removed, it is evenly covered with a covering agent, and then the ...

Embodiment 2

[0065] Product Chemical Composition

[0066]

[0067] The melting process is the same as in Example 1.

[0068] Continuous casting and rolling: the casting temperature is 720°C, the casting cooling water temperature is 30°C, the casting speed is 8m / min, and the cross-sectional area of ​​the cavity formed by the copper wheel and the steel strip is 2200mm 2 , the diameter of the copper wheel is Φ1600mm.

[0069] Then adopt the process of entering rolling temperature of 510°C, finishing rolling temperature of 390°C, entering rolling speed of 11.5m / min, finishing rolling speed of 5.95m / s, emulsion temperature of 60°C, emulsion concentration of 20%, and emulsion flow rate of 20L / min The 5356 aluminum alloy welding rod that has been continuously rolled to Φ9.5mm after 13 passes is cooled to 100°C at a cooling rate higher than 100°C / min through the oil-free lead rod water quenching system, and the post-traction and continuous winding rod system Under the action, the double frame...

Embodiment 3

[0072] Product Chemical Composition

[0073]

[0074] The melting process is the same as in Example 1.

[0075] Continuous casting and rolling: the casting temperature is 720°C, the casting cooling water temperature is 30°C, and the casting speed is 8m / min. The cross-sectional area of ​​the cavity formed by the copper wheel and steel strip is 2200mm 2 , the diameter of the copper wheel is Φ1800mm.

[0076] Then adopt the process of entering rolling temperature at 510°C, finishing rolling temperature at 390°C, entering rolling speed at 11.5m / min, finishing rolling speed at 5.3m / s, emulsion temperature at 60°C, emulsion concentration at 20%, and emulsion flow rate at 20L / min The 5356 aluminum alloy welding rod that has been continuously rolled to Φ9.5mm after 14 passes is cooled to 100°C at a cooling rate higher than 100°C / min through the oil-free lead rod water quenching system, and then pulled by the rear traction and continuous winding machine Under the action, the doubl...

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Abstract

The invention relates to the technical field of aluminum alloy welding rods, in particular to a continuous casting and continuous rolling production process for 5356 aluminum alloy welding rods. The production process comprises the following steps: (1) smelting is performed; (2) continuous casting and continuous rolling are performed; a continuous casting cooling water constant-temperature technology, a roller temperature control technology and a continuous rolling emulsion constant-temperature technology are used for controlling the final rolling temperature within 340-460 DEG C; and water quenching is performed on the 5356 aluminum alloy welding rods of phi 9.5 mm by a cooling speed of higher than 100 DEG C / min; and (3) wire rods are cooled to 100 DEG C through an oilless guide rod waterquenching system by the cooling speed of higher than 100 DEG C / min; and under the effects of back traction and a continuous rod winding system, double frames collect the rods as coils for binding asdiscs. The 5356 aluminum alloy welding rods with low hydrogen-low oxide inclusion-bright surface-stable quality-uniform structure are produced by the continuous casting and continuous rolling production process through a controlled rolling and controlled cooling technology.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy welding rods, in particular to a continuous casting and rolling production process for 5356 aluminum alloy welding rods. Background technique [0002] In recent years, my country's aerospace, high-speed rail and other fields have developed rapidly, and good news has been reported frequently. This also puts forward higher requirements for the most widely used non-ferrous metal-aluminum alloy in aerospace, high-speed rail, automobile and other fields. Taking aluminum alloy for high-speed rail as an example, the carriage is welded by large flat, wide and thin-walled aluminum alloy components. The performance of the welded structural part depends on the performance of the welding wire when the base material is certain. [0003] High-performance aluminum alloy welding wire is a key new material urgently needed in my country. At present, my country mainly adopts the semi-continuous casting-ext...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22C1/06C22F1/047B21B1/46
CPCB21B1/466C22C1/026C22C1/03C22C1/06C22C21/08C22F1/002C22F1/047
Inventor 周天国
Owner 江苏和拓铝线有限公司
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