About high pressure die casting process High pressure die casting can produce castings quickly and economically. These castings can be composed of various holes, threads and notches, which are characterized by high dimensional accuracy and good surface finish. They make the metal economical and require little or no surface treatment. The principle of pressure die-casting is to press molten metal into a mold or die under considerable pressure. Machines used for this purpose operate on one or both systems: Hot chamber die casting machine (for metals with low melting point) Cold chamber die casting machine (for metal with high melting point) In a hot-chamber die-casting machine, the metal is kept liquid in a crucible inside the machine, and the pressure chamber that feeds the metal into the mold is located in the metal groove. Such machines can be operated pneumatically, or more usually by the action of a stamping piece to develop pressure. The cast metal of the cold chamber machine is kept liquid in the holding furnace, transferred from the holding furnace to the pressure chamber by a spoon or a special automatic device, and pressed into the mold by a stamping piece. Some simple machines are operated by hand, but in order to increase productivity, fully automatic machines are more commonly used. In pressure die casting, the complex multi-part design of precision manufactured dies, and therefore very expensive, is exposed to harsh working conditions with continuous changes in high pressure and temperature. For the production of zinc and zinc-alloy castings, molds can be made of unalloyed steel, but for magnesium, aluminum, copper, and alloys of these metals, molds are generally made of hot-worked steel, which is much more durable. Another development of high-pressure die casting is vacuum die casting. It produces castings with a better finish than ordinary high pressure castings. There are two systems in which the mold is either enclosed in a hood that draws out the air, or an insulated furnace is installed beneath the casting machine so that metal is drawn into the mold and compacting inside it while the air is drawn out. A process for making cast iron castings has been developed based on this principle.

First, what is die casting? Die casting is a process of using pressure to inject molten metal into a mold and then obtaining a cast product with a precise shape or geometry as the internal shape of the mold. In this article, we will talk about the equipment of this process, what is a die casting machine, the common type of die casting machine, and their mechanism and choice. Two, what is the die casting machine? Die casting machine is used for metal casting process, through the die casting machine to inject molten metal into the mold cavity, when the metal cools and solidifies, it will form the shape of a die casting, which is a manufacturing method to obtain metal castings such as aluminum or zinc die casting. Three, die casting machine type: Die casting machines can be divided into different categories according to different classification methods such as use and size. Generally speaking, die casting machines can be divided into two kinds: hot chamber and cold chamber. 1.1. Hot chamber die casting machine The hot chamber machine has a pressure chamber connected to the mold cavity to which molten metal can flow continuously. When the cylinder of the chamber returns to its unpressured position, the molten metal is fed into the casting mold. A crucible for melting metal is attached to the machine, and a piston mechanism for hydraulic injection of metal into the mold is installed in the crucible. Some hot chamber die-casting machines use compressed air to press metal directly into the mold, without the need for a piston mechanism. The injection mechanism is immersed in molten metal, so it is necessary to avoid chemical corrosion or corrosion of the immersion injection system. Hot chamber die casting machine is mainly used for casting zinc, tin and other low melting point alloys. 1.2. Advantages of hot chamber die casting machine -- High productivity - Improve surface finish - Capable of producing complex castings - Tight dimensional tolerances - Suitable for zinc die casting 2.1 Cold chamber die casting machine In the cold chamber machine, metal melted from a separate holding furnace is scooped into the cold chamber sleeve after the mold is closed. The metal is then pressed into the mold, which is opened to solidify, and the cast will be injected. The metal is melted outside the machine and added to the compression chamber. It can be divided into vertical cold chamber die casting machine and horizontal cold chamber die casting machine according to the motion direction of compression piston. The molten metal is removed from the furnace of the vertical cold chamber die casting machine and injected into the compression chamber. The metal is injected into the mold by a compression piston, and the remaining metal is pushed out by another piston. The horizontal cold chamber die casting machine works in the same way as the vertical die casting machine, except that the direction of piston movement is horizontal. Most modern die casting machines are horizon...

In die casting, there are two main processes - hot chamber and cold chamber. The technology you choose depends on your project specification and the type of results you seek to achieve. In this guide, we'll discuss the former method, including how it works, what metals are used, and what advantages it has compared to its cold chamber counterpart. First、what is hot chamber die casting? Die casting is a permanent die making process pioneered in the early 20th century that uses large amounts of pressure to push molten metal through the die. Due to the large amount of pressure applied, this method can produce castings with a great degree of surface detail, excellent dimensional accuracy, and extremely thin wall-sometimes as small as half a millimeter. Industrial metal castings vary widely in size, from as small as 50 pounds or so. Parts manufactured using this process include tools, machine parts, carburetors, motors, various shells, and toys. Second, about hot chamber die casting In hot chamber die casting, the metal is heated in an attached die casting machine. These casting machines, also known as gooseneck machines, feature built-in furnaces that heat the metal until it reaches a molten state. This process uses a hydraulic piston to force molten metal from the furnace into the mold. This type of die casting is a relatively fast process. The hot chamber die casting process is used for high productivity applications requiring large output. In cold chamber casting, the casting machine does not heat the metal. Instead, the molten metal must be poured into the chamber either manually using a ladle or with an automated ladle system. Once the metal is injected, a hydraulic piston forces the molten metal into the mold under high pressure. 3. Materials for hot chamber die casting. Because hot chamber die casting has an internal melting point, manufacturers of hot chamber die casting machines recommend the use of metals with lower melting points. This is so that the metal will not dissolve or corrode the metal of the machine under heating or high pressure. For example, machine parts such as plungers are continuously submerged in molten metal. If the metal has too high a melting point, it will cause the plunger to continue to damage and lose its function. This may require expensive replacement. Materials such as aluminum have a higher melting point. The metal has a melting point of 1,220 degrees Fahrenheit, compared with 786 degrees for materials like zinc. Therefore, aluminum is not suitable for hot chamber die casting process. The most suitable materials for hot chamber die casting are zinc and magnesium alloys, which will be discussed in more detail below. Zinc: 1. Zinc has special hardness and strength, which can be used in many fields and is a good substitute for pressing, machining, manufacturing and stamping components. Zinc also has excellent structural integrity and wear resistance, which makes it ideal for highly complex, multifaceted shapes in th...

Warm Welcome "Chen Guolong, Secretary of the Party Committee of Bengbu College, went to Bengbu Longhua to inspect and guide the progress of the die-casting automation project" On August 15, 2022, Bengbu College Party Committee Member and Secretary Chen Guolong (CPC Member, Doctor of Science, Postdoctoral Fellow, Professor, Master Supervisor of the Institute of Software, Chinese Academy of Sciences) led the Dean of the School of Computer Science of Bengbu College, Huang Yinghui, Director of the Scientific Research Office, Wu Jie, Computer Expert Dr. Li Xianwei [Information and Communication (Computer System and Network Engineering) Major of Waseda University in Japan, Master Supervisor)] went to Bengbu Longhua to inspect and guide "the progress of the die-casting automation project jointly developed by Bengbu College and Bengbu Longhua". The project went through 1 After more than years of research and development and repeated trial production, all technical indicators of die-casting automation have reached GB/T31555-2015 national standards of the People's Republic of China, and some technical indicators have exceeded national standards. The intellectual property rights of die-casting automation are completely independent, and the degree of localization has reached 99%. During the joint R&D and production, this high-tech product has successively won 9 invention patents, 1 computer software copyright, and 1 integrated circuit diagram design certificate. Die-casting automation high-tech products have been sold to 27 foreign countries and regions. Due to the high degree of automation, high cost performance, low failure rate and simple operation, this product has been well received by new and old customers of Longhua. The birth of this product has greatly reduced the domestic The production and procurement costs of external die-casting manufacturers, due to the replacement of robots, directly reduce industrial accidents in the production process to zero, and at the same time increase foreign exchange reserves for the country and enhance the competitiveness of national brands in the international market. Replacing labor with robots is an inevitable trend in industrial automation! Photo: Member of the Party Committee of Bengbu College, Secretary Chen Guolong, Dean of the School of Computer Science Huang Yinghui, Director of the Scientific Research Office Wu Jie, computer expert Dr. Li Xianwei, etc.

Die casting machine structure： From the overall structure: column frame, frame, injection, hydraulic, electrical, lubrication, cooling, safety From the machine function points: clamping mechanism, injection mechanism, hydraulic transmission, electrical control, safety protection Clamping mechanism: Function: it mainly realizes the action of closing the mold, locking the mold and ejecting the product 1, composition (1) Three plates: moving seat plate, finalize the seat plate, tail plate (1) Corinth column: crankshaft mechanism: long hinge, small hinge, hook hinge, and connected with the movable type seat plate, tail plate and closed hydraulic cylinder (2) ejector mechanism: ejector hydraulic cylinder, thimble, fixed in the moving seat plate (3) Mold adjusting mechanism: mold adjusting motor, gear assembly, fixed on the tail plate (4) Lubrication system: bent elbow lubrication pump, oil drain, oil pipe, shunt 2. Work characteristics (1) Bending elbow mechanism A, the effect of increasing force through the bending elbow connecting rod system, can magnify the thrust of the clamping hydraulic cylinder 16~26 times, to reduce the fuel consumption, reduce the diameter of the clamping hydraulic cylinder, reduce the power of the pump, to achieve the same power. B, can realize variable speed closing mold movement: in the mold process, the moving mold base plate moving speed from zero quickly to the maximum, then gradually slow down, with the bending elbow straight to terminate, closing mold speed becomes zero, and then self-locking state. C. When the clamping die is terminated, the thrust force can be removed: when the clamping die is tight and the elbow rod is extended into a straight line, the self-locking will occur. At this point, the thrust of the clamping hydraulic cylinder can be removed. The clamping system is still in the closed state. (2) Ejecting mechanism: After the machine opens the mold, push rod and thimble can be pushed out through the relative movement of the piston rod of the hydraulic cylinder. The ejecting force, ejecting speed and ejecting time can be adjusted by the hydraulic system, and the double hydraulic cylinder can be used to make the push rod force uniform, gentle movement, and the ejecting pinhole distribution more reasonable. (3) Mold adjusting mechanism: By adjusting the mold motor to drive the gear assembly, the tail plate and the moving template of the mold locking column frame move along the pull rod in the axial direction, so as to expand or reduce the distance between the dynamic finalize the seat plate, see the specification for parameters. (4) Lubrication system: To reduce motion wear, proper lubricating oil must be maintained on the motion surface. And to achieve timing and quantitative lubrication, at the same time, the use of lubrication pump, automatic lubrication. (5) Injection mechanism Role: the metal hydraulic into the mold cavity for filling. Composition: injection hydraulic cylinder assembly, feeding barrel, ...

Die casting machine is mainly composed of mold closing mechanism, injection mechanism, hydraulic system and power control system. In addition, die casting machine also has parts and components and frame, other devices, auxiliary devices and other parts. Working principle of die casting machine: (1) At the beginning of the slow injection movement in the first stage, the hydraulic oil of the system enters the cavity through the oil circuit integrated plate, and then enters the cavity through the channel, so as to push the injection piston to the left to achieve the slow injection. (2) Two-stage rapid injection movement. When the injection punch exceeds the sprue of the barrel, the control valve of the accumulator opens, and the hydraulic oil enters the cavity rapidly through and through the sprue. The volume of the hydraulic oil in the cavity increases rapidly, and the injection speed increases. (3) Three-stage supercharging movement of metal liquid filling into the cavity, immediately terminated, alloy liquid began to solidified, then the punch forward resistance increases, controlled by the computer program, the use of accumulator control valve open, through the rapid entry into the cavity, so as to promote the pressurized piston and piston rod left fast move. When the piston rod and floating piston inside and outside cone joint, truncated, so that the formation of a closed chamber, pressurized piston, piston rod, floating piston and the pressure of the chamber together to obtain a pressurized effect of the piston. (4) slow, fast and pressurized fast and slow time policy can be adjusted by the oil circuit board control oil valve () the role of the hydraulic transmission system: through the hydraulic components (power components, executive components, control components, auxiliary components, working medium) and loop transmission power, so as to achieve a variety of actions.

China's first self-developed die casting robot was successfully trial-produced in Longhua, Bengbu   On May 30, 2022, Bengbu Longhua Die Casting Machine Co., LTD. * Hefei Institute of Material Science, Chinese Academy of Sciences * Bengbu College * Anhui Peitian Robot Group Co., LTD., two science and technology manufacturing r&d enterprises and two big institutes, actively respond to the great call of encouraging "cooperation between institutes, industries, universities and research institutes".  The first "die casting robot" jointly developed and manufactured by many parties in China has been successfully debugged in Longhua die casting Machine production base in Bengbu.   The die-casting robot has completely independent product intellectual property rights, the degree of localization reaches 99%, and the cost performance is the world's first.  In r&d and production, it has successively won 874 patents (including 543 invention patents and 54 PCTpatents) and 74 computer software Copyrights.  The successful research and development of this product has fundamentally changed the world's understanding of die casting robots. After entering the market, it will completely shake the monopoly position of four foreign robot families (Fanuc, Yaskawa, Kuka and ABB) on the global die casting robot market.  The birth of this product can not only reduce the production and procurement costs of domestic and foreign die-casting robot manufacturers (die-casting machine manufacturers and die-casting manufacturers), but also improve the competitiveness of national brands in the international market.   "Domestic AI die casting robot, help science and technology power, let the world fall in love with Made in China!"   

On May 24, 2022, Bengbu, vice President of Chinese people's political consultative conference (CPPCC), the MDC of Anhui provincial party committee standing committee, the MDC Bengbu municipal party committee chairman comrade Zhou Jingfei with MDC Bengbu council organization department minister kingship and department leaders come to Bengbu Longhua die casting machine co., LTD of Bengbu Longhua with Hefei institute of Chinese Academy of Sciences major joint research and development production of die-casting robot to inspect the progress of the project, And provide guidance. Zhou Jingfei pointed out: science and technology power, manufacturing prosperous country, the domestic die casting robot into China's Fanuc. We will try our best to give full play to the regional advantages of bengbu traditional manufacturing industrial base, and make die-casting machine and die-casting machine special robot project bigger and stronger with longhua's experience and wisdom.