Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for using width-adjustable chamfering crystallizer to cast aluminum alloy slab ingot with large width-to-thickness ratio

A technology of chamfering crystallizer and aluminum alloy is applied in the casting field of aluminum alloy flat ingot, which can solve the problems of high processing difficulty, low equipment utilization rate, uneven and stable quality of aluminum alloy flat ingot, etc., so as to save equipment and maintenance costs. , Improve the casting success rate, improve the effect of equipment utilization

Active Publication Date: 2016-11-09
广西南南铝加工有限公司
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The arc mold can relieve the transverse cracks at the corners of the right-angle mold, but its processing is difficult, the size is difficult to guarantee, and the cost in follow-up maintenance is high
At the same time, the amount of milling of the cast arc slab is larger during milling, and the yield is low
Electromagnetic casting adopts electromagnetic crystallizer. The cast ingot has fine and uniform macrostructure, smooth surface and thin segregation layer. However, due to the high cost of technical equipment and patent use, it is not widely used in industrial production.
The wagstaff and low liquid level casting methods are widely used in production. Due to the differences in cooling water quality, water flow rate, casting temperature, molten aluminum temperature, and types and specifications of ingots and crystallizers in casting, the actual cast aluminum alloy flat The quality of the ingot is not uniform and stable, and casting is prone to a large number of waste products
In the traditional casting process, fixed mold casting is adopted, with a single width and low utilization rate of equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for using width-adjustable chamfering crystallizer to cast aluminum alloy slab ingot with large width-to-thickness ratio
  • Method for using width-adjustable chamfering crystallizer to cast aluminum alloy slab ingot with large width-to-thickness ratio
  • Method for using width-adjustable chamfering crystallizer to cast aluminum alloy slab ingot with large width-to-thickness ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The production of 5182 alloy with a size of 2570×550 mm is carried out as follows:

[0033] 1. Ingredients: by mass fraction: Si: 0.05-0.20%, Fe: 0.10-0.35%, Cu: 0.01-0.14%, Mn: 0.20-0.45%, Mg: 4.20-4.80%, Cr: 0.01-0.09%, Zn: 0.01-0.25%, the balance is aluminum, weigh the aluminum ingot for remelting, return material, pure Mg ingot, pure Zn ingot, Al-Si master alloy, Al-Fe master alloy, Al-Cu master alloy, Al -Mn master alloy, Al-Cr master alloy, the aluminum purity of aluminum ingots for remelting is 99.70%, and the amount of aluminum ingots for remelting and 5xxx series alloy return materials are strictly controlled. The amount of 5xxx alloy return materials accounts for 0- 80%.

[0034] 2. Melting: Put the raw materials weighed in step 1 into a 50T smelting furnace, stir and smelt with an electromagnetic stirrer at 690-750°C. After all alloys are put into the furnace, when the melting temperature reaches 710-~740℃, then smelt for 5-20 minutes. Take the melt for direct r...

Embodiment 2

[0043] To produce 3003 alloy of 2470×550mm specification, proceed as follows:

[0044] 1. Ingredients: According to the mass fraction, Si: 0.05-0.60%, Fe: 0.05-0.70%, Cu: 0.05-0.18%, Mn: 1.10-1.40%, Mg: 0.01-0.04%, Zn: 0.01-0.09%, The balance is aluminum, weigh the aluminum ingots for remelting, return material, pure Mg ingot, pure Zn ingot, Al-Si master alloy, Al-Fe master alloy, Al-Cu master alloy, Al-Mn master alloy, and remelt The aluminum purity of aluminum ingots is 99.70%, and the amount of aluminum ingots for remelting and 3xxx series alloy return materials are accurately controlled. The amount of 3xxx series alloy return materials accounts for 0-80% of the total cast furnace.

[0045] 2. Melting: Put the raw materials weighed in step 1 into a 50T smelting furnace, stir and smelt with an electromagnetic stirrer at 700-760°C. After all alloys are put into the furnace, when the melting temperature reaches 710-~740℃, then smelt for 5-20 minutes. Take the melt for direct readi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for using a width-adjustable chamfering crystallizer to cast an aluminum alloy slab ingot with a large width-to-thickness ratio and belongs to the technical field of metal processing. The method comprises the following steps of dosing, smelting, heat preserving, refining, standing, online refining, grain refining, filtering, casting and soaking. According to the method, in the casting process, the chamfering crystallizer is used, the width is adjustable, the equipment utilization rate can be increased, the equipment and maintenance cost is saved, the slab ingot milling amount is reduced, the yield is increased, the aluminum alloy slab ingot with the width-to-thickness ratio reaching 4.13-4.67 and the width size reaching 2270-2570 mm is obtained, and the requirements of different customers can be met.

Description

Technical field [0001] The invention relates to a method for casting aluminum alloy slabs, in particular to a method for casting aluminum alloy slabs with a large width to thickness ratio by using a width-adjustable chamfer crystallizer. Background technique [0002] In industrial production, cast aluminum alloy slabs are prone to many defects, such as excessive composition and segregation, coarse grain size, oxide inclusions, bubbles, shrinkage porosity, surface segregation tumors, cracks, ingot tail collapse and cracking, etc. The yield is difficult to guarantee. Especially for large-size slabs, its corners are easy to enter the third brittle zone under the action of the two-dimensional cooling zone, resulting in a large number of corner cracks. The current solution is to use a mold with a circular arc and to electromagnetic casting, waxstaff And the adjustment and improvement of the low-liquid-level casting process. [0003] The arc mold can alleviate the transverse cracks at ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C1/03C22C1/06B22D11/00B22D11/119C22C21/00
CPCB22D11/003B22D11/119C22C1/026C22C1/03C22C1/06C22C21/00
Inventor 何宇棋陈仁桂庞宇任月路蓝东华徐燕萍黄程毅
Owner 广西南南铝加工有限公司