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Equipment and method for rolling magnesium/aluminum composite plate to inhibit magnesium alloy edge cracks

A technology of aluminum composite panels and magnesium alloys, applied in metal processing equipment, metal rolling, metal rolling, etc., can solve problems such as insufficient material utilization, magnesium/aluminum composite panel production, limited application range, and low yield , to achieve the effect of weakening stress and plastic strain, reducing size limit and suppressing cracks

Pending Publication Date: 2021-12-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the rolling process of magnesium / aluminum composite sheets, magnesium alloys are prone to edge cracks, which lead to problems such as low yield and insufficient material utilization, which greatly restricts the production and application range of magnesium / aluminum composite sheets.

Method used

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  • Equipment and method for rolling magnesium/aluminum composite plate to inhibit magnesium alloy edge cracks
  • Equipment and method for rolling magnesium/aluminum composite plate to inhibit magnesium alloy edge cracks
  • Equipment and method for rolling magnesium/aluminum composite plate to inhibit magnesium alloy edge cracks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 3 As shown, an equipment for rolling magnesium / aluminum composite plates to suppress edge cracking of magnesium alloys includes an upper roll 1, a lower roll 2 and a rolling mill stand, and two rolling width-limiting retaining rings 6 are installed on the lower roll 2 , used to weaken the stress and plastic strain of the side edge of the plate along the axial direction of the roll. The rolling width-limiting retaining ring 6 is composed of two semicircular buckles fixed by bolts, and the rolling width-limiting retaining ring 6 and the lower roll 2 are clearance fit. The material of the rolled width-limiting retaining ring 6 is T2 red copper. On the left and right sides of the rolling mill frame, a motor support 4 is installed, a motor 3 is arranged on the motor support 4, a pinion 10 is arranged on the output shaft of the motor 3, and the pinion A large gear 9 is engaged and connected, and the large gear 9 is installed on the roller shaft o...

Embodiment 2

[0041] A method for suppressing edge cracking of magnesium alloys by rolling a magnesium / aluminum composite plate, comprising the following steps:

[0042] S1, select retaining ring: prepare rolling width-limiting retaining ring 6 with an inner ring diameter of 151 mm and an outer ring diameter of 156 mm, and install it on the lower roll 2;

[0043] S2. Moving the retaining ring: powered by the motor 3, the rolled width-limiting retaining ring 6 is driven to move, so that the horizontal distance between the two rolling width-limiting retaining rings 6 is 80mm;

[0044] S3, adjust the roll gap: adjust the pressing of the rolling mill so that the roll gap between the upper roll 1 and the lower roll 2 is 5.6 mm;

[0045] S4. Batch making: prepare AZ31B magnesium alloy plates with a size of 100mm×80mm×3mm and 5052 aluminum alloy plates with a size of 100mm×80mm×5mm, and use a grinder to grind the surfaces to be bonded to magnesium and aluminum alloys to remove surface impurities. ...

Embodiment 3

[0050] S1, select retaining ring: prepare rolling width-limiting retaining ring 6 with an inner ring diameter of 151 mm and an outer ring diameter of 159 mm, and install it on the lower roll 2;

[0051] S2. Moving the retaining ring: powered by the motor 3, the rolled width-limiting retaining ring 6 is driven to move, so that the horizontal distance between the two rolling width-limiting retaining rings 6 is 110 mm;

[0052] S3, adjust the roll gap: adjust the pressing of the rolling mill so that the roll gap between the upper roll 1 and the lower roll 2 is 7mm;

[0053] S4. Batch making: prepare AZ31B magnesium alloy plates with a size of 120mm×110mm×4mm and 5052 aluminum alloy plates with a size of 120mm×110mm×6mm, and use a grinder to grind the surfaces to be bonded to magnesium and aluminum alloys to remove surface impurities. Buckle the surfaces of the two boards to be joined and use aluminum wire to bind them at a distance of 10-15mm from the head of the board to keep th...

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Abstract

The invention belongs to the technical field of metal forming, and particularly relates to an equipment and method for rolling a magnesium / aluminum composite plate to inhibit magnesium alloy edge cracks. The equipment for rolling the magnesium / aluminum composite plate to inhibit magnesium alloy edge cracks comprises an upper roller, a lower roller and a rolling mill rack, and two rolling width limiting baffle rings are installed on the lower roller and used for weakening stress and plastic strain of the side edge of the plate in the roller axial direction. Counter-force in the roller axial direction is given to the plate through the width limiting baffle rings, and therefore stress and plastic strain of the side edge of the magnesium alloy plate in the roller axial direction are weakened, and then generation of magnesium alloy edge crack is inhibited. Due to the adjustability of the rolling width limiting baffle rings, the size limitation of the magnesium / aluminum composite plate is further reduced, the application range of the magnesium / aluminum composite plate is expanded, equipment manufacturing, installation and operation are quite simple, the process difficulty is not high, and mass production is easy.

Description

technical field [0001] The invention belongs to the technical field of metal forming, and in particular relates to a device and a method for suppressing edge cracking of a magnesium alloy by rolling a magnesium / aluminum composite plate. Background technique [0002] Magnesium alloys are used in industrial fields such as vehicles, electronics, and aviation because of their advantages such as low density, high strength, and rigidity, but their wider applications are severely restricted due to their poor corrosion resistance. The aluminum alloy has good corrosion resistance and price advantages, so the combination of the two plates through rolling can give full play to their respective advantages, make up for their respective shortcomings, and achieve better applications. However, during the rolling process of magnesium / aluminum composite plates, magnesium alloys are prone to edge cracks, which lead to problems such as low yield and insufficient material utilization, which grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B3/00B21B27/02B21B13/02
CPCB21B3/00B21B27/021B21B13/02B21B2003/001
Inventor 王涛赵辰辰韵宇亮刘江林李子轩和东平
Owner TAIYUAN UNIV OF TECH
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