Magnesium Alloy used for Etched Plate

Application thinking
November 14 2014 15: 03640 views Source: China Nonferrous network Category: Application of magnesium: Cheng Sen in large font size conventional

Introduction: This paper describes the application of rolled magnesium alloy sheets in various fields and future market demand forecasts. The application of magnesium alloy etched sheets and magnesium alloy sheets on the molds was introduced, and their performance was analyzed and compared. The magnesium alloy etched plate can completely replace the zinc plate and the copper plate, and the magnesium alloy plate can completely replace the aluminum plate and the copper plate in the mold field.

Metal magnesium and magnesium alloys have become the inevitable choice for the sustainable development of China's material industry in the 21st century due to their unique resources, performance, environment and price advantages. In recent years, China has made great progress in the development and application of magnesium alloy technology. As the world's number one, magnesium and magnesium are the major countries, and there are new breakthroughs in the field of magnesium research and production. Some achievements have become the world, and the way to promote the sustainable development of magnesium alloys.

At present, the application products of magnesium alloys are mainly concentrated in the field of casting processing, and the products are not subjected to deformation processing, and the excellent performance of the magnesium alloy cannot be fully exerted. Magnesium alloy sheet is the most promising product in the field of magnesium alloy deep processing. Among them, the rolled magnesium alloy sheet is subjected to rolling deformation under large reduction, the microstructure of the refined magnesium alloy is improved, the mechanical properties of the sheet are improved, the characteristics of the magnesium alloy are fully utilized, and the application field of the magnesium alloy can be greatly expanded. Previously, magnesium alloy sheets were mainly used in the military and aerospace fields. In recent years, the demand for magnesium alloy sheet strips for domestic military industry has exceeded 5,000 tons per year. The demand for civilian use is small, mainly because of the unstable production process in the past few years, the performance is not up to standard, and the production cost is high, which greatly limits the use in other fields. After several years of research, the rolling process of magnesium alloy sheet has been continuously improved, the production cost has gradually decreased, the types of products and specifications have been increasing, and it has been increasingly accepted by the market, and has been widely used in various fields.
According to incomplete statistics, many fields have not only begun to use magnesium alloy sheets, but the amount is constantly increasing. Most of the electronics industry used die-casting to produce magnesium alloy products, which were unfavorable due to the immature thin-walled die-casting technology, low yield, and high production cost. At present, it is replaced by an easy-to-form, low-cost magnesium alloy sheet, which is formed by stamping and forming from the original die-casting. The global demand for magnesium alloy sheets for electronic products is about 5,000 to 6,000 tons per year, and the amount of magnesium alloy sheets used in micro-plates has reached 4,000 tons. ,
Before the automotive industry, magnesium alloy die castings were widely used, and the demand for magnesium alloy sheets is increasing year by year. Under the general trend of promoting energy conservation and emission reduction, weight reduction has become the focus of the automotive industry. The original steel plate and aluminum plate components on automobiles have been replaced by more and more magnesium alloy plates. According to incomplete statistics in the industry, in the next two to three years, the demand for magnesium alloy sheets in the automotive industry will reach 10,000 tons.
In the high-speed rail and urban rail transit industries, magnesium alloy sheets and profiles have also been used extensively, mainly in the form of magnesium alloy honeycomb panels for the inner walls and floors of trains, seat frames, sleeper frames, inner linings, and shelves. It can reduce weight, absorb vibration energy, reduce noise, and increase train comfort and safety. According to the long-term development plan of the Ministry of Railways in 2006-2020, it is estimated that the number of lightweight rail trains will increase by 1,500 per year, which will require 160,000 to 200,000 tons of magnesium alloy profiles and plates.
In the medical field, magnesium alloy has excellent and unique physical and chemical characteristics. Its specific strength and specific stiffness are very good in metal materials, and it has good biocompatibility, and it can be automatically degraded in living organisms. The performance of other metal materials has great potential and broad application in the medical field. Some people predict that 2020 tons will be needed by 2020.
The printing field has a wide range of applications for magnesium alloy sheets, and the demand for sheets is very large and is increasing dramatically. In fact, as early as 40 years ago, magnesium alloy sheets began to be widely used in the printing field, mainly in Europe and the United States. Domestically, copper and zinc plates have been the main reason. The reason is that the domestic special plates have not been produced for printing, and the import prices are very high. However, copper and zinc sheets are not as good as magnesium alloy sheets in all aspects, and the damage to the environment is very serious. Therefore, as the domestic market demand begins to supply magnesium alloy sheets, more and more copper and zinc sheets are replaced by magnesium sheets. Replaced. If you replace all of them with magnesium alloy etched sheets, you will need 7,000 tons per year.
In the field of molds, magnesium alloy sheets are also beginning to emerge. It is made into a mold by engraving with a magnesium alloy sheet, and it is widely used in the industries of shoe making and ornament making.
In the textile machinery industry, magnesium alloy sheets are used to manufacture non-woven needle machine needle boards and heald frame boards. It is expected that the demand will reach 300 t/a or more in the next few years.
Application and Advantages of Magnesium Alloy Etched Plates
The demand for magnesium alloy sheets in the printing field is mainly reflected in hot stamping, that is, magnesium alloy etched sheets. The plate making process is a few steps such as printing, opening, pickling, and alkali washing. The processed finished product is installed directly on the hot stamping machine. Before using zinc and copper plates, Magnesium Elektro began producing magnesium alloy etched plates 40 years ago. Since zinc plates and copper plates generate a large amount of waste liquid during the plate making process, they cannot be recycled, and the environmental pollution is particularly serious. In Europe and the United States, magnesium alloy etching plates are gradually used instead of zinc plates and copper plates.
At present, the market demand for magnesium alloy etched sheets is very large and is growing rapidly. In Europe alone, the demand for magnesium alloy etched sheets is more than 2,000 tons per year, and the total demand on other continents is more than 1,000 tons per year. At present, the domestic bronzing printing industry is still using zinc plate and copper plate, and its demand is more than 7,000 tons per year. If these plates are replaced by magnesium alloy etched plates, the demand will reach more than 1,500 tons per year. In the field of hot stamping, the annual demand for magnesium alloy rolled sheets exceeds 4,500 tons.
Performance Analysis of Magnesium Alloy Etched Plate
Magnesium alloy etched plates and zinc plates and copper plates are mainly compared from the following aspects:
Plate making time
Therefore, the plate making process of the bronzing version is basically the same. The main difference is in the etching time, using the same pattern, the same required etching depth, the magnesium plate takes 5 minutes, while the zinc plate takes 25 minutes and the copper plate exceeds 30 minutes.
hardness
Hardness is the main technical parameter for measuring the hot stamping version. When the temperature is below 50 ° C, the hardness of the magnesium plate is 92, the zinc plate 36, and the copper plate 96. When the plate is heated to 100 ° C, the hardness of the magnesium plate is 90, the zinc plate 30, and the copper plate 88. It can be seen that the magnesium plate hardness changes minimally when the temperature required for bronzing is reached. This directly affects the number of substrates. Under the same conditions, the printing capacity of magnesium and copper plates is more than 200,000 times, and the zinc plate is less than 50,000 times.
Cost and bronzing effect
The first is the cost of making plates. In the case of the same area, the same thickness, and the same requirements, the cost of using magnesium sheets is 30% lower than that of zinc sheets, and 70% lower than that of copper sheets. In the process of hot stamping, the production cost of magnesium sheets is 10% lower than that of zinc sheets and copper sheets.
Followed by the bronzing effect, the magnesium alloy etched plate has the right slope, sharp edge and high hardness after the plate making, and the heating is fast and the cooling is fast in the hot production process. The surface of the substrate after bronzing is very bright, and the effect is the same as that of the copper plate. Far more than zinc plate.
Magnesium alloy etched plate supply
The demand for magnesium alloy etched sheets is huge, but the supply situation has been in a state of monopoly. Magnesium Elektro started producing magnesium alloy etched sheets 40 years ago. Its products are all over the world and have always been a monopoly on the market. Since the import price is too high and the domestic environmental protection requirements are not strict, the domestic market has been using zinc plates and copper plates.
The technical barriers to the production of magnesium alloy etched sheets are mainly the production of plate bases, namely the production of magnesium alloy sheets. At present, there are two main methods for the production of magnesium sheets: the traditional rolling method and the two-roll casting method (the width of the extrusion method is not analyzed). However, since the magnesium alloy etched plate has very high requirements on the performance of the plate base, only the rolled magnesium plate produced by the conventional rolling process, that is, the wrought magnesium alloy plate can be selected. Moreover, the requirements for the alloying of the plate base of the magnesium alloy etched plate, that is, the requirements of the magnesium alloy ingot are also very high. There has been no breakthrough in the processing technology of rolled magnesium alloy sheets in China, so the market has not been developed. It was not until Yingkou Yinhe Magnesium Alloy Co., Ltd. rolled out the first roll of magnesium alloy coils, completely breaking the monopoly of the 40 years.
Yingkou Yinhe Magnesium-Aluminum Alloy Co., Ltd., after nearly 10 years of technical research, cooperated with Northeastern University and Northern Heavy Industry to realize the industrial production of high-quality and large-size slabs, and built the first professional magnesium alloy sheet rolling in China. The production line has completely independent intellectual property rights. At present, the annual output of magnesium alloy etching plate is 200 tons, which is the first in China and the second in the world to produce magnesium alloy etched plates.