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Device and method for preparing magnesium alloy ingot for deformation

A preparation device and magnesium alloy technology, applied in metal processing equipment, equipment for feeding molten metal into molds, manufacturing tools, etc., can solve the problem of oxidative combustion of magnesium alloy melt, affecting the yield of ingot billets, and the temperature of catheter tubes Control difficulties and other problems to achieve the effect of avoiding disturbance

Active Publication Date: 2016-10-19
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the casting methods of magnesium alloy ingots for deformation are mainly die casting and semi-continuous casting. Die casting is a relatively old method, which is basically operated manually or with simple tools. This method is used to prepare magnesium alloy ingots for deformation The billet quality is difficult to guarantee, the production efficiency is very low, the yield is low, and the cost is relatively high; compared with die casting, the semi-continuous casting method has greatly improved both in billet quality control and production efficiency, but at present Using this method to prepare magnesium alloy ingots for deformation still has some problems. For example, for magnesium alloy melts that are extremely easy to oxidize, burn, and have a large air intake, the underflow method or the liquid guide pump method is used when casting, and the underflow method is cast. It is an open liquid guide, which can easily make the magnesium alloy melt contact with the air, and then cause the magnesium alloy melt to oxidize and burn, making casting control and quality control difficult
Casting with liquid guide pump is to extend the pump body with blades into the melt of the crucible, and the pump body with blades rotates to realize the liquid guide. The flux inclusions or oxide inclusions to the bottom of the crucible enter the mold with the melt through the catheter, and then solidify into the magnesium alloy ingot for deformation, so it is difficult to obtain high-quality and high-quality ingots by these two methods Blank
In addition, it is difficult to achieve long-distance liquid conduction in underflow casting. In order to achieve long-distance liquid conduction, a catheter is currently used to conduct liquid, but it is very difficult to control the temperature of the catheter. Resistance heating is used for temperature control, which takes a long time. Complicated, easy to damage and high cost, unable to achieve rapid temperature replenishment, which limits the smooth drainage of the catheter and easily leads to blockage of the catheter; it is also very difficult to control the position of the catheter in the mold using resistance heating
During the preparation of magnesium alloy ingots for deformation, the control of the diversion control of the melt in the mold is also very important. The bottom flow method is difficult to realize the docking with the diverter plate, and it is impossible to realize the diversion control and liquid level control of the melt in the mold during stable casting. It affects the surface quality of the ingot during drawing casting, increases the turning amount of the ingot surface, and affects the yield of the ingot

Method used

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  • Device and method for preparing magnesium alloy ingot for deformation
  • Device and method for preparing magnesium alloy ingot for deformation
  • Device and method for preparing magnesium alloy ingot for deformation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 1000kg of raw materials according to the composition ratio of AZ31B magnesium alloy, put the weighed raw materials into the crucible 10 preheated to 300°C and raise the temperature, control the temperature at 740°C, and carry out stirring and refining for 30 minutes after all the raw materials are melted. Dust removal device 2, after the melt temperature reaches 720°C after refining, put a sealing ring 5 on the upper edge of the crucible 10 and cover the furnace cover 9, and clamp the furnace cover 9 and the crucible 10 with a sealing fastening fixture 3; put the sealing ring Put it on the furnace cover 9 to reserve the insertion hole 15 where the catheter 6 is to be inserted, and then use the heat pipe rapid heating device 8 to preheat the heat pipe to 730°C. hole, and at the same time put the other end of the catheter 6 into the mold, and use the catheter height adjustment device 23 to adjust the position of the catheter 6 in the mold, and then use the sealing cl...

Embodiment 2

[0047] Weigh 1000kg of raw materials according to the composition ratio of Mg-10Gd-3Y-2Zn-0.6Zr magnesium alloy, put the weighed raw materials into the crucible 10 preheated to 500°C and raise the temperature, control the temperature at 780°C, and wait until all the raw materials are melted Then carry out stirring and refining for 40 minutes. During refining, the dust removal device 2 is turned on. After the melt temperature reaches 780°C after refining, put a sealing ring 5 on the upper edge of the crucible 10 and cover the furnace cover 9, and seal the furnace cover 9 with a sealing fixture 3. Clamp with the crucible 10; place the sealing ring on the furnace cover 9 to reserve the insertion hole 15 where the catheter 6 is located, and then use the heat pipe rapid heating device 8 to preheat the heat pipe to 760°C at one end of the pipe Insert it from the reserved insertion hole on the furnace cover, put the other end of the catheter 6 into the mold, and adjust the position of...

Embodiment 3

[0050] Weigh 2000kg of raw materials according to the composition ratio of ZK60 magnesium alloy, put the weighed raw materials into the crucible 10 preheated to 400°C and heat up, the temperature is controlled at 760°C, after all the raw materials are melted, stir and refine for 50 minutes, and turn on when refining Dust removal device 2, after the melt temperature reaches 760°C after refining, put a sealing ring 5 on the upper edge of the crucible 10 and cover the furnace cover 9, and clamp the furnace cover 9 and the crucible 10 with a sealing fastening fixture 3; put the sealing ring 5. Place it on the furnace cover 9 to reserve the insertion hole 15 where the catheter 6 is inserted, and then use the heat pipe rapid heating device 8 to preheat the heat pipe to 740°C. One end of the catheter 6 is preheated from the furnace cover 9 Insert the remaining insertion hole 15 into the mold, and at the same time put the other end of the catheter tube 6 into the mold, and adjust the p...

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Abstract

The invention relates to a device and method for preparing magnesium alloy ingots for deformation. The device includes six parts: a dust removal device, a smelting device, a sealing device, a liquid guiding device, a flow diverting and flow controlling device, and a casting device; the method includes magnesium alloy batching, smelting, sealing, pressurizing, liquid guiding, diverting and Control flow and cast. The production process of the invention is simple, the cost is low, the process is stable, and it is easy to realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of metal materials and metallurgy, and in particular relates to a device and method for preparing a magnesium alloy ingot blank for deformation. Background technique [0002] Magnesium alloy has the advantages of small specific gravity, high specific strength, good electromagnetic shielding performance, and good vibration resistance, and has great application potential in transportation, communication, aerospace and other industrial fields. In addition, magnesium is abundant on earth. In recent years, the requirement of saving energy and protecting the environment has promoted the rapid growth of the application of magnesium alloys. At present, magnesium alloy parts are mainly produced by die-casting, but the mechanical properties of die-casting parts are low, which limits the excellent characteristics of magnesium alloys, and hinders the expansion of the application field and the increase in the amount of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/14B22D11/103B22D35/00
Inventor 张志强宝磊胡文义刘轩乐启炽崔建忠
Owner NORTHEASTERN UNIV LIAONING
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