Aluminum alloy die-casting has been developing continuously for a long time. China's aluminum alloy die-casting industry has made amazing development and has developed into an emerging industry. At present, the process has become one of the most widely used processes in the automotive aluminum alloy forming process. Aluminum alloy die-casting products are mainly used in electronics, automobiles, motors, home appliances and some communication industries. Some high-performance, high-precision, high-toughness high-quality aluminum alloy products are also used in relatively demanding industries such as large aircraft and ships. . The main use is still on some parts of equipment. Aluminum alloy has a wide range of applications, good castability, high dimensional accuracy of castings, good surface roughness, good casting stability, high productivity, high metal utilization rate, easy to save production, and high strength and surface hardness of castings. Five characteristics. 1, durability Aluminium has strong stability and resistance to oxidation, and aluminum alloy castings will not rust and corrosion; the surface is coated with electrostatic powder and fluorocarbon coatings, and various large-scale indoor and outdoor decorative products can be maintained for a long time without discoloration. 2. Plasticity Aluminium has good ductility, which is convenient for various modeling designs. It has toughness, can be used repeatedly, and has a wider range of applications. 3. Security After various rigorous tests, the resistance of aluminum products to earthquake, wind pressure and weathering is guaranteed. The unique aluminum alloy casting method makes the manufactured work lighter, reduces the burden on transportation and construction operations, and reduces danger. 4. Creativeness The motifs are designed by professional designers to lead the world trend. According to the owner's preferences, a separate decoration can be designed to create exclusive home privileges. 5.light weight Aluminium is light in weight, making installation and maintenance more convenient. Bengbu Longhua Die-casting Machine Co., Ltd. has specialized in producing precision aluminum die-casting auto parts for 38 years. It is a key high-tech enterprise of the National Torch Plan.

Special activity: buy die casting machine, free stove Fight against the epidemic! During the epidemic period, in order to thank the new and old customers at home and abroad for their support and understanding, from February 24, 2020 to March 23, 2020, new and old customers purchased our company's die-casting machines during this period and took part of the money Send energy-saving die-casting furnace (electric furnace, natural gas furnace) project. The specific scheme is as follows; Purchase one of our company's die casting machines; After depositing the die casting machine, an additional 1450 USD will be given to 200KG (energy-saving electric furnace or natural gas energy-efficient furnace). After depositing the die casting machine, an additional 2160 USD will be given to 300KG (energy-saving electric furnace or natural gas energy-efficient furnace). After depositing the die casting machine, an additional 2880 USD will be given to 400KG (energy-saving electric furnace or natural gas energy-efficient furnace). After depositing the die casting machine, an additional 4320 USD will be given to 500KG (energy-saving electric furnace or natural gas energy-efficient furnace). After depositing the die casting machine, an additional 5040 USD will be given to 800KG (energy-saving electric furnace or natural gas energy-efficient furnace). After paying the deposit of the die casting machine, an additional 5760 USD will be given to 1000KG (energy-saving electric furnace or natural gas energy-efficient furnace). Offer period: one month Remarks: interpretation right belongs to Longhua Company Bengbu Longhua Die Casting Machine Co., Ltd. February 24, 2020

How to effectively prevent crucible corrosion (as shown in figure)? Longhua technology reminds you: 1, as far as possible to the furnace slag to slag outside the furnace, such operation is to reduce the probability of crucible corrosion;The other is to save the slag refining process and the incubation waiting time after the end.（www.longhuamachine.com/www.diecastingmachinechina.com） 2.Choose the solvent with low content of sodium and chlorine when removing slag, refining, deterioration and covering.Crucible is porous, sodium, chlorine will accelerate the corrosion of the pores to form holes.（www.longhuamachine.com/www.diecastingmachinechina.com） 3.The temperature of slag removal and refining aluminum solution should reach 720 ~ 730℃, because if the temperature is not enough, the solvent cannot react quickly and will be absorbed on the inner wall of the crucible, accelerating the corrosion of the crucible.（www.longhuamachine.com/www.diecastingmachinechina.com） 4. Timely clean the slag on the walls and bottom of the crucible. First, the expansion rate of the slag is larger than that of the crucible when the slag is too thick and the temperature rises, which will lead to the cracking of the crucible;Second, the solvent adsorption or precipitation on the residue of the crucible will accelerate the corrosion of the crucible;Third, please clean in the high temperature phase to prevent physical damage to the crucible.（www.longhuamachine.com/www.diecastingmachinechina.com）

Die-casting mold is a tool for casting metal parts, a tool that completes the die-casting process on a special die-casting die forging machine. So what does the design process look like? Today, Longhua Die Casting Machine will take you to understand. 1. According to the materials used in the product, the shape and accuracy of the product and other indicators, process analysis of the product, and order the process. 2. Determine the position of the product in the mold cavity, and analyze and design the parting surface, the overflow system and the pouring system. 3. Design the core assembly method and fixing method for each activity. 4. Design of core distance and force. 5. Design of ejection mechanism. 6. Determine the die casting machine, design the mold base and cooling system. 7. Check the relevant dimensions of the mold and die-casting machine, and draw the process drawings of the mold and each component. 8. The design is complete.

1.In die-casting production, when die-casting parts are stuck, you can use a spoon to pour the aluminum alloy onto the die-casting parts of the die (generally the weight is about the same as that of the die-casting parts). The die casting is thermally expanded, and the die casting of the sticking template is tried to be ejected by the ejector of the ejection cylinder, and the die casting of the static die is pried out with a chisel.（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com） 2.If the above method does not work, the only way to remove the mold, with a chisel bit by bit to clean down the sticky mold casting.（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com） 3.Check whether there is good spraying on the parts where the mold is overheated, such as the long core;（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com） 4.Check whether the die drawing inclination of the die casting is maximized, and increase the die drawing inclination can reduce the adhesive mold;（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com） 5.Check whether the mold is rough, or if there are places where the die is drawn backward, repair and polish these places（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com） 6. If the die casting always sticks to the static template, you can deliberately rough the unimportant parts of the dynamic mold, increase the clamping force of the dynamic mold, so that the die casting will no longer stick to the static mold.（Bengbu Longhua Die Casting Machine Co.,Ltd.  www.longhuamachine.com/www.diecastingmachinechina.com）

China's economy has maintained a momentum of rapid development. As the contradiction between resources and the environment is increasingly intensified, according to the requirements of the scientific development concept, circular economy and clean production have become important national policies for sustainable socio-economic development. Experts point out that the total output of die-casting, that is, non-ferrous metal casting under various pressures including low-pressure casting and squeeze casting, is about 1.5 million tons. It is understood that the total national automobile production reached 7.28 million units, an increase of 27.6% year-on-year, of which 3.87 million cars were produced, an increase of 39.7% year-on-year. In 2012, the country's total output of die castings was 1024,000 tons, of which: 802,140 tons of aluminum die castings and 13,620 tons of magnesium die castings. From January to October 2012, the country's car production was 3.501 million vehicles, a year-on-year increase of 23.4%; sales of 3.601 million vehicles, a year-on-year increase of 22.0%. The die-casting market will still maintain rapid growth. Die-casting non-ferrous metal resources can be recycled and die-casting is advanced without cutting technology. It is especially suitable for the requirements of circular economy and clean production, and is in line with the general policy of national economic development. The light weight of automobiles has accelerated the development of the aluminum-magnesium die-casting market; the shift in the focus of international non-ferrous metal die-casting production to China has become an inevitable trend, and the die-casting market has huge room for development. Increased demand for aluminum alloy die castings to promote the development of die castings industry The automobile industry is one of the important customers of the domestic die casting industry. With the development of the domestic economy and the improvement of people's living standards, domestic automobile sales have risen linearly, which has largely promoted the development of the domestic die casting industry, especially the aluminum alloy die casting industry. With the increasing demand for lightening of domestic automobiles, the optimization and upgrading within the automotive industry is also gradually being implemented, and gray iron castings are gradually replaced with aluminum castings, which has stimulated the increasing demand for aluminum alloy die castings. In addition, with the rapid development of the global die casting industry, the demand for aluminum alloy die castings from various industries is also increasing, and the development prospects of the die casting industry are very broad. Bengbu Longhua Die-casting Machine Co., Ltd. produces die-casting machines, which are widely used in the production of various types of high-quality die-casting aluminum alloy die-casting, copper alloy die-casting, magnesium alloy die-casting and other non-ferrous met...

   The burr phenomenon of aluminum alloy is inevitable, and there are many methods to deal with the burr. In the production process of die casting, due to factors such as pressure shock and insufficient clamping force, burrs are inevitable. In recent years, with the increasing quality requirements of die castings, the requirements on burrs have become more stringent, and the methods of deburring have also emerged endlessly. The deburring process is the most troublesome. Today Bengbu Longhua Die Casting Machinery Co., Ltd. recommends the following pros and cons of various types of die casting deburring methods, so that you can better understand the various deburring methods and according to your needs Select the appropriate deburring method. 1. Artificial deburring  This is the most traditional and commonly used method in the die-casting factory. It uses files (files include manual files and pneumatic files), sandpaper, belt machines, grinding heads, etc. Disadvantages: labor costs are expensive, efficiency is not very high, and complex cross holes are difficult to remove. Applicable object: The technical requirements of workers are not very high, applicable to aluminum alloy die castings with small burrs and simple product structure. 2.Die deburring   Deburring is performed by using a production die and a punch. Disadvantages: Requires a certain die (rough die + fine die) production cost, and may also need to make a shaping die. Applicable object: It is suitable for aluminum alloy die-casting parts with relatively simple parting surface, which has better efficiency and deburring effect than artificial. 3.Grinding and deburring  This type of deburring includes vibration, sand blasting, rollers and other methods, which are currently used in die casting plants. Disadvantages: There is a problem that the removal is not very clean. It may require subsequent manual treatment of residual burrs or deburring with other methods. Applicable object: Suitable for small aluminum alloy die-castings with larger batches. 4, frozen deburring  The burr is quickly brittled by cooling, and then the projectile is ejected to remove the burr. The price of the equipment is about two to three hundred thousand;  Applicable object: Suitable for aluminum alloy die-casting with smaller burr wall thickness and smaller volume. 5, hot deburring  Also called thermal deburring, explosion deburring. By passing some easy gas into an equipment furnace, and then using some media and conditions to make the gas explode instantly, use the energy generated by the explosion to dissolve and remove burrs.  Disadvantages: expensive equipment (prices of millions), high operating technology requirements, low efficiency, side effects (rust, deformation);  Applicable object: mainly used in some high-precision parts and components, such as automotive and aerospace and other precision parts. 6.Deburring of engraving machine  The equipment ...

Sometimes, the surface of the die casting has a network of hair-like raised or sunken marks, as the number of die-casting increase and can not be expanded and extended.Visual recognition, hand touch surface and rough. Causes: 1, die casting mold cavity surface crack 2. The used die casting mold material is improper or the heat treatment process is incorrect 3. The temperature difference between cold and heat of the mold changes too much in a very short time 4. Casting temperature is too high 5. Uneven and insufficient preheating before mold production 6. Rough surface of mold cavity To improve the method 1. Correct selection of mold materials and heat treatment process Longhua die casting machine adopts H13 hot die steel, which is resistant to high temperature, corrosion and easy to maintain to ensure casting quality. 2. Casting temperature should not be too high, especially for alloys with high melting point.In order to meet the production demand, the casting temperature should be as low as possible 3. Preheat the mold sufficiently and evenly. Longhua die-casting machine suggests that before the use of the mold, use liquefied gas or natural gas concentrated baking 3-5 minutes, to ensure that the mold fully uniform preheat, improve the surface problems of the die casting. 4, mold production to a certain number of annealing, to eliminate the internal stress. Longhua die-casting machine suggests that you, after each use, timely remove the impurities in the mold cavity, smear lubricating oil to maintain the mold, prolong the service life of the mold. 5. The surface of runner and cavity is not regularly polished to ensure the surface of the mold is clean 6, reasonable choice of mold cooling method, to ensure the mold heat balance