Characteristics of magnesium alloy

1. The specific gravity of lightweight magnesium only needs 1.8G / CM3, and the specific gravity of aluminum alloy is 2.7G / CM3. The magnesium alloy is 30% lighter than aluminum alloy and 80% lighter than steel. Therefore, magnesium alloys in cars and portable electronic products have become parts made into interesting materials.

2. Strength magnesium alloy has excellent strength/weight ratio in engineering materials such as metals and plastics.

3. Die-casting property In adherence to excellent structural conditions, the minimum thickness of Magnesium Alloy Die Cast Part reaches 0.6mm, which is impossible for plastics to reach under the same strength. The die-casting function of aluminum alloy is also compared with magnesium alloy when it is 1.2-1.5mm or more. Magnesium alloys are easier to die-cast and are suitable for large-scale die-casting production (the production speed can reach 1.5 times that of aluminum). In addition, the wear of magnesium alloy molds is also lower than that of aluminum.

4. Shock-absorbing magnesium has excellent shock-absorbing and shock-absorbing functions, which can absorb radon and noise. Used as the equipment case, it can reduce noise transmission, prevent shock and avoid sag damage.

5. Rigid magnesium is twice as rigid as aluminum and higher than most plastics. Magnesium has excellent resistance to stress.

6. Magnesium alloy with a high electromagnetic interference barrier has an excellent function of blocking electromagnetic waves, which is suitable for producing electronic products.

7. Outstanding cutting function magnesium has better machinability than aluminum and zinc, making magnesium a metal material that is easier to cut.

8. The specific heat capacity of magnesium alloy is small, and the cooling speed of the alloy liquid is fast.

9. The affinity of magnesium alloy and mold steel is small, and it is not easy to adhere to the mold.

Magnesium Alloy Die Cast Part

As a Metal Acceeeories Manufacturer, share with you the advantages of magnesium alloy semi-solid molding:

1: Can form difficult products, hot/cold room machine can not reach the standard.

2: Low molding temperature and long mold life.

3: The molded product has high precision and good surface quality.

4: Green and environmental protection, do not use any protective gas.

In recent years, countries around the world have attached great importance to the research and development of magnesium alloys. Magnesium resources have been used as important strategic materials in the 21st century to strengthen the research and development of magnesium alloys in the fields of aerospace, communications, automobiles and computers. Developed countries such as the United States, Japan, and Europe have already invested a lot of manpower and material resources, implemented a number of large-scale joint research and development plans to study automotive magnesium alloy parts, and these research and development plans have accelerated the pace of applying magnesium alloy parts abroad. China is a big country in the production and consumption of motorcycles and a big exporter. It is also a potential big country in automobile production and consumption. However, currently, China’s magnesium alloy forming technology is still relatively backward. The low mechanical properties and corrosion resistance of Magnesium Die Casting Parts are an important factor restricting the application of automotive magnesium alloy parts in China.

Aluminum Alloy Die Cast Part surface treatment, the common causes of mold are as follows:

1. External environmental factors. Aluminum is a vivid metal, which is easily oxidized and turned black or moldy under certain temperature and humidity conditions. This is a characteristic of aluminum.

2. Then there are internal elements of itself. Many manufacturers do not perform any cleaning treatment after the die-casting and machining processes, and may simply be flushed with water, which cannot be thoroughly cleaned. Corrosive substances such as mold release agents, cutting fluids, saponification fluid and other stains remain on the surface of die-casting aluminum, which in turn accelerates mold growth of aluminum alloy die castings;

3. Process planning is unreasonable. Improper treatment of aluminum alloy die castings after cleaning or pressure inspection, to create conditions for mold mildew of aluminum alloy die castings, and accelerate mold formation.

4. Do not use cleaning agents properly. Cleaning is highly corrosive, forming corrosion and oxidation of die-cast aluminum.

5. Storage is not in place. The mold is different at different heights in the storage warehouse.

Aluminum Alloy Die Cast Part

Methods to prevent mildew of aluminum alloy castings:

1. Do not choose the refining and slagging agent containing Na salt or Mg salt, use the refining and mutating agent of C2Cl6, Na2SiF6 and NaF, or N2 gas refining

2. Do not use the release agent containing plant fiber, replace the release agent with better quality;

3. Do not use machine-fiber-containing cutting fluids and replace oil-based rust-resistant cutting fluids;

4. The product cannot be stored in the open air for a long time to prevent accumulation of flying dust on the surface of the product;

5. The product packaging cartons stacked on the board need to be wrapped with 6 sides of the wrapping film and waterproof;

6. After the product is wetted with water, it needs to be placed in a ventilated place to dry;

Die Cast Part has been widely used in all walks of life of the national economy, but to know that if you want to make a high-quality die-casting part, the die-casting mold is absolutely necessary. Among them, the die casting mold material is the main object in the design and manufacturing of bearing die-casting molds. It plays an important role in the die-casting mold industry, and plays a leading role in the ease of manufacturing of the die-casting mold and the long service life of the die-casting mold. So how do we choose the material of the die?

First, the die-casting mold material selected must have good enforceability, machinability, wear resistance and corrosion resistance, and have high red hardness, high-temperature strength, tempering resistance and impact toughness at high temperature. The second is that the material of the die-casting mold must have good thermal conductivity, fatigue resistance, high-temperature oxidation resistance, hardenability and small heat treatment deformation rate. Good die-casting mold materials are the basis for good die-casting molds, and the die-casting molds play a leading role in the production process of the die-casting parts. We are Aluminum Alloy Die Cast Part Factory, welcome to consult.

Lead-zinc ore processing zinc alloy die-casting system uses zinc alloy lead-zinc production process flow for casting and rolling. This kind of alloy has a low melting point and can be cast into a variety of precise and messy components. It has high mechanical strength, corrosion resistance, ductility, excellent forge ability and sensitive versatility. It is widely used to make high-quality components and products. The features and applications of Zinc Alloy Die Cast Part is introduced in detail below.

Zinc Alloy Die Cast Part

Die-casting alloys can be divided into two major alloy series: casting and machining.

Castings include die-cast zinc, aluminum alloys, gravity-cast zinc-aluminum alloys, and die-cast zinc-copper-titanium creep-resistant alloys. They are used for die-casting and various free-casting parts such as bearings, wear-resistant parts, molds and shock-absorbing parts.

Processing category includes superplastic zinc-aluminum alloy, deformable zinc-copper-titanium alloy, etc., and can produce semi-finished products such as belts, tubes, rods, wires, profiles and superplastic molded parts for construction, machinery, appearance, cars and electronics Industry and other parts.

Zinc alloy die-casting requires high corrosion resistance and excellent physical and mechanical processing functions, so it has strict requirements on impurities, such as Pstrong <0.003%, Cd <0.002%, Sn <0 001%, which is necessary when making alloy Use Zn> 99. 99% of the purest zinc. The alloy composition also requires high purity.

Zinc alloy die-casting refers to a zinc-based alloy series containing 4% Al, 0.1% ~ 0.3% Cu.0. 03% ~ 0 1% Mg. This type of alloy has the best fluidity near the eutectic point, but the creep speed is too high under high temperature and high-pressure conditions. In order to further improve the physics of zinc-based alloys, the functions of casting machining, and change the alloy elements and their composition to form a new series of die-cast zinc alloys.

Five steps to choose a zinc alloy die-casting plant

The zinc alloy die-casting produced by the zinc alloy die-casting processing plant is one of the most commonly used types of die-casting in our daily life. Many of our products are manufactured using zinc alloy die-casting processes, such as mechanical parts, electronic products Shells, etc., and a good product made by a good Die Cast Mold Manufacturers is always more popular. When we need to customize zinc alloy die casting products, we can choose a good zinc alloy die casting factory from these aspects.

I don’t think it ’s any different from our grocery shopping. The first thing we have to look at is whether the food sold by the merchant is what we want to buy. The zinc alloy die-casting factory that cannot make the products we need is definitely not what we want; the second step of shopping It depends on the quality of the “vegetables”, but the quality is definitely not good; then it is the speed. If I can’t deliver the “vegetables” to me quickly, I must look for another house; the price is too high I have no profit, it is too low and abnormal, and it is easy to produce moths. The fifth is the service attitude. The good service attitude shows that the die-casting company has perfect rules and regulations. If there is a problem, it is easy to communicate.

Through the above points, a suitable zinc alloy die-casting plant can generally be found. Our company also has CNC Machined Part, welcome to consult.

Magnesium alloy die-casting router shell mould

Description about Custom Die Casting Mould

Industry Application	Magnesium alloy die-casting router shell mould
Material	SKD61
Features	1. Magnesium Alloy Die Cast Part products have the advantages of strong shielding, good shock absorption and strong heat dissipation. 2. Magnesium Die Casting Parts can be recycled and used as an environmentally friendly material. 3. The appearance and touch texture of magnesium alloy products are excellent, which makes the products more luxurious.
Process	Die casting mold
Tolerance grade	+—0.05mm
Surface treatment	desalination,Heat treatment

Aluminum alloy cavity mold

Description about Aluminum Alloy Die Casting Mold

Industry Application	Aluminum alloy cavity mold
Material	SKD61
Features	1. Aluminum Die Casting Parts have good thermal conductivity and electrical conductivity, which is widely used, such as automobile, aviation, aerospace parts, etc. 2. Aluminum has good oxidation resistance and corrosion resistance, and is not easy to be oxidized in air. 3. Die casting aluminum products have good casting performance, high casting strength, small thermal expansion coefficient, good cutting performance.
Process	Die-casting mould
Tolerance grade	+—0.05mm
Surface treatment	Desalination and heat treatment

Aluminum alloy heat sink mold

Description about Die Casting Mould

Industry Application	Aluminum alloy heat sink mold
Material	SKD61
Features	1.Aluminum alloy die cast products have strong strength and hardness, stable size and goo interchangeability 2.Aluminum alloy die cast products has a long service life. which can realize mechanization and automation. 3.The ductility of aluminum alloy die cast products are very good and can be produced for castings with very thin walls.
Process	Aluminum Alloy Die Casting Mold
Tolerance grade	+—0.05mm
Surface treatment	Desalination and heat treatment

Die Casting Mould

Description about Die Casting Mould Components

Industry Application	Die Casting Mould
Material	Steel SKD61
Features	1.High hardness and high temperature resistance. 2.High processing precision and stable product formation. 3.The mold has a long life.
Process	CNC
Tolerance grade	+—0.05mm
Surface treatment	Heat treatment
Quality control	1.Mould oil road, smooth water transport. 2.The core is not repaired and welded. 3.Inserts, sliders, and thimbles are assembled.

Our Custom Die Casting Mould includes Aluminum Alloy Die Cast Part, Magnesium Alloy, Zinc Alloy, etc. It provides all-round production services from the design and development of mould to the forming and post-processing of die-casting products and surface treatment.

In the production process, in order to avoid the defects of Aluminum Alloy Die Casting, it is necessary to adopt effective measures to reduce the moisture of the raw materials as much as possible, strengthen the quality management of smelting, and improve the exhaust energy of the mold. The details are as follows:

Aluminum Alloy Die Casting

The main reason for the pores in the composition of the casting is that the aluminum alloy contains excessive H. The hydrogen content accounts for% to% of the total gas content. The rest is N, O CO, etc., and H is derived from the atmosphere and various metal raw materials and fluxes. And the moisture in the coating is thermally differentiated, and the HO = H + + O-reaction occurs under high-temperature conditions, which is a reversible reaction. The differentiated oxygen easily generates AlO with a higher melting point with the metal liquid. The reaction equation is: Al + + O-= AlO. This promotes the high-temperature differentiation of water vapor and the hydrogen ions are continuously dispersed into the alloy liquid.

Hydrogen exists in the aluminum solution in two ways: the first is to differentiate into atomic state and dissolve in the aluminum solution, called dissolved type, accounting for about%; the second type of hydrogen is adsorbed to the appearance of inclusions in the form of molecular bubbles Or in the gap, it is called adsorption type. Since the solubility of hydrogen in the aluminum alloy liquid increases with temperature, the alloy liquid will absorb a lot of H during the melting process. In the process of crystal coagulation, due to the temperature drop, the surface of the alloy liquid first condenses and the viscosity of the alloy increases. Although the solubility of hydrogen needs to be separated from the molten metal, it is now difficult to stay in the alloy liquid. This constitutes a stomata defect. The longer the melting and holding time, the higher the hydrogen content.

The solubility of tritium hydrogen in the alloy liquid is not only proportional to the temperature, but also proportional to the pressure and the humidity of the air, that is, the partial pressure of hydrogen.

Aluminum alloy elements and their content also have a certain effect on solubility. When the content of silicon and copper is added, the solubility of hydrogen decreases, and when the content of magnesium is added, the solubility of hydrogen is added. The critical content of hydrogen in the alloy liquid is different with different aluminum alloy components. Aluminum alloy has the largest hydrogen absorption when it is a hypoeutectic aluminum-silicon alloy.

As an Aluminum Alloy Die Cast Part Factory, share with you the reasons for the occurrence of mucosa in the production of die casting molds.

The mucosa is a very common phenomenon in die casting production. The following are summarized

1. Die Casting Mould temperature adjustment is too high, exceeds the required range.

2. Insufficient demolding angle, too small mucosa.

3. The die-casting mold is not polished properly.

4. the release agent is not sprayed in place.

5. the problem of aluminum alloy raw materials.

6. The irrational design of the runner will also cause the mucosal phenomenon of the die-casting mold.

Solution:

1. First check the mold temperature and combine it with the previous production plan to see if the temperature is too high.

2. Check the proportion and usage of the release agent to see if it meets the production requirements.

3. Improve the mold’s pouring system and cooling system.

4. Improve the parameters of the pressing process and modify their parameters appropriately.

Magnesium Die Casting Parts to have broad application prospects and extremely important economic value in the fields of automotive, electronics, electrical appliances, transportation, aerospace, aviation, defense and military. However, the electrode potential of magnesium alloys is very negative, and the oxide films of magnesium alloys are usually porous and porous, with high chemical and electrochemical activity, so their chemical stability is low and corrosion resistance is poor. In addition, magnesium alloys have low hardness and poor wear resistance. These defects also limit the widespread application of magnesium alloys to some extent. widely used. Therefore, how to effectively improve the wear resistance and corrosion resistance of magnesium alloys from the perspective of satisfying industrial applications has become a key technical problem to be solved urgently in the development and research of magnesium alloys.

Magnesium Die Casting Parts

Magnesium alloys have been used in the car industry for a long time. Now magnesium alloy die-casting parts have been used in cars. In Audi cars, transmission cases, chassis parts, hand brakes, steering brackets, pedal frames, beams, Ceiling structure, etc. On Mercedes-Benz models, B series steering gear housings, CL series door trims, transmission housings, SL series fuel tank covers, etc. have been used.

As a China Die Casting Parts Factory, share information with you. Magnesium alloy is currently the lightest structural metal in engineering use, together with outstanding damping and shock-absorbing functions, occupying a strategic advantage in the trend of lightweight in the car industry. The resources of primary magnesium are abundant, and the content of crustal engineering metals is second only to aluminum and iron, ranking third, and the content of seawater is second only to sodium, ranking second. In addition, China has abundant magnesium resources and is a large producer and exporter of magnesium.

Nowadays, the research and development of magnesium alloy car castings have increased collaboration with the world’s leading manufacturers and research institutions. The proposal of the China-US-Canada World Collaboration Project is an important step to open up the use of magnesium alloy castings. Through the China-US-Canada MFERD collaboration project network channel, the three parties shared resource and effect data. The project will rely on U.S. and Canadian design and testing channels to break the magnesium alloy forming, connection and appearance protection skills, complete a number of tests such as collision resistance, NVH, fatigue durability, etc., and develop car god beams, beams, shock absorption towers, etc. Key components, reducing the front-end component, occupying the commanding height of lightweight technology of cars.

Many existing magnesium alloys in China lack originality. In the past, the use of magnesium alloys was more simply export of castings, which were mainly copied or produced according to drawings and samples provided by users, and there was a lack of originality in China. Although the prospects for the use of magnesium alloys are attractive, many uses of magnesium alloy castings in passenger cars still need time. At the time when the demand of the magnesium industry was sluggish and bottlenecks, demand looked more calmly at the prospects for the future use of magnesium alloys. It is not exaggerated by the development of use, nor is it lost by the sluggish use. First of all, we must fully understand the current difficulties and bottlenecks in the use of magnesium alloys in the field of cars, cooperate with users to deal with the use of magnesium alloys, and complete the early use of engineering in the field of cars. Our company provides Magnesium Alloy Die-Casting Service, welcome to consult.

The anodized film of aluminum has high hardness, good corrosion resistance and abrasion resistance, and has good transparency so that the surface after the anodizing treatment maintains the original metal texture of the aluminum. However, Aluminum Alloy Die Cast Part participates in this very multi-metal material, which is prone to air defects, cold insulation, sand holes and other defects during the surface treatment of aluminum alloy die castings. Due to the second phase generated by the alloying elements and the electrode potential of the aluminum substrate Different, so the anodic oxidation behavior and mechanism of aluminum alloy is much more complicated than pure aluminum. At the same time, in addition to aluminum oxide and anions in solution, the composition of aluminum alloy anodic oxide film will inevitably have some alloying elements in aluminum alloy. A state, an oxide state, or an intermetallic compound state exists. Therefore, the appearance quality of the aluminum alloy die-casting oxidation treatment is poor, and the defect rate is high.

Aluminum Alloy Die Cast Part

Anodizing is an issue with the existing technology of aluminum alloy die casting, but it can be done with a reasonable structure for aluminum alloy die casting products. Generally, a layer of zinc is first plated, then a copper base is plated, and then electroplated. The cost is too high and the yield is low.

Next, as an Aluminum Alloy Die Cast Part Factory, I will tell you about the cause of the strain of the die casting.

The surface of the casting along the direction of the mold is a linear strain mark with a certain depth. The zinc alloy is die-cast. In severe cases, the entire surface is damaged. The molten metal adheres to the surface of the mold, resulting in a lack of material on the casting surface.

1. Cause

The surface of the mold cavity is damaged; there is no slope or too small slope in the direction of the mold; the ejection is unbalanced; the mold is loose; the pouring temperature is too high or too low, the mold temperature is too high, which causes the alloy liquid to adhere; Not good; zinc alloy composition iron content is less than 0.8%; cooling time is too long or too short; poor parallelism of die casting machine.

2. Ways to improve

Repair mold surface damage; Correct the slope, zinc alloy die-casting company, improve the surface finish of the mold; adjust the ejector rod, zinc alloy die-casting processing to balance the ejection force; tighten the mold; control the reasonable pouring temperature and mold temperature 180-500 ℃ Replace the release agent or use anti-scratch paint; adjust the zinc content of the zinc alloy; adjust the cooling time; modify the runner to change the direction of the zinc liquid; adjust the parallelism of the die casting machine.

Die-casting molds sometimes have some problems. What should I do?

(1) Take out the die-casting mold and inspect the damaged part to find out the cause of the damage to avoid recurrence;

(2) Clean up the mold, clean up the parting surface, cavity and ejector of the mold, and re-spray after improving the spraying process;

(3) Re-adjust process parameters, such as injection force, injection speed, pouring temperature, mold temperature, filling time, etc .;

(4) mold repair, for example: increase the gate, exhaust slot, etc .;

(5) Change raw materials, re-purchase high-quality raw materials, and adjust the ratio of returned materials to new materials.

Our company provides Aluminum Die Casting Service, welcome to consult.