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Die casting technology is developing rapidly Die-casting machine is a machine used for pressure casting, including hot-pressing chamber and cold-pressing chamber, after which they are divided into two types: straight and horizontal. The die-casting machine hydraulically injects the molten metal into the mold under pressure to cool and form. After the mold is opened, a solid metal casting can be obtained, which is initially used for die-casting type. With the progress of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles and household appliances, die-casting technology has achieved extremely rapid development. At present, the problems in the process of vehicle die-casting: in the frame production and die-casting process, the die-casting of different parts of the frame requires different die-casting machines. A single die-casting machine in the factory is used to die-cast individual frame components. Then, factory workers or robot systems will assemble or fix the die-cast components of each die-casting machine together to form a frame. Therefore, the die-casting process of auto parts usually requires a high cost, and it is necessary to improve the die-casting machine and related die-casting methods, especially to reduce the die-casting work of the final assembly into the frame. The latest technology reduces Model Y casting parts from 70 to 1 According to reports, Tesla executive Tao Lin said that Tesla’s die casting machine uses the latest aluminum casting process, which will reduce the casting parts of Tesla Model Y from 70 to 4, and then reduce it. Up to one, while greatly improving the structural stability of the body. Model Y cast parts are Tesla's first application using its new aluminum casting process. In this regard, Elon Musk said: “Tesla is using aluminum castings instead of a series of stampings. We will reduce 70 parts to 4 parts and then 1 part to reduce weight and improve MBH, reducing costs and greatly reducing capital expenditures applies to all robots that put together 70 parts in the past." Today, Tesla has made several major manufacturing improvements for the Model Y production plan, including the creation of a huge new casting machine to produce most of a Model Y frame.

There is also a lot of room for the application of mold temperature machines in the die-casting industry, especially in the manufacture of magnesium alloys and aluminum alloys. Uneven or inappropriate mold temperatures will cause the size of the casting to be unstable, and the ejection of the casting will be deformed during the production process. Defects such as thermal pressure, mold sticking, surface depression, shrinkage cavity and hot bubble. It also has an impact on the production cycle, such as filling time, cooling time and spraying time all produce unstable variables. The life of the mold will also cause thermal cracking of the expensive steel due to the impact of overcooling and overheating, which accelerates its aging. Advantages of applying extrusion die casting process on traditional die casting machine The traditional die-casting process and equipment technology have been quite perfect, especially the horizontal cold-chamber die-casting machine and horizontal die-casting process. Its injection and mold clamping devices have strong process adaptability. Therefore, if the squeeze casting process cannot be combined with traditional die-casting equipment, its wide application will be restricted. After this step, another branch of squeeze casting technology will appear, which is squeeze die casting technology. In other words, applying squeeze casting technology on the basis of traditional die casting machine is squeeze die casting technology. According to the characteristics of extrusion die-casting process, the traditional die-casting machine is improved and transformed accordingly. This equipment is a brand-new extrusion die-casting machine.

In the die-casting machine manufacturing industry, if the market share of large machines is low, it means that the company has no say in the industry. Ten years ago, the situation of China's die-casting machines was exactly the same. For large machines above 2000T, leading domestic die-casting companies tended to favor European and Japanese brands. Yizumi, who first embarked on the journey of entrepreneurship with small and medium-sized models, has been focusing on the development of large machines. Since 2006, it has designed * 1650T die-casting machines, and now has an annual output of nearly 50 units, and the market stock exceeds 250 units, covering 90% of the country. Leading die-casting companies around the world account for more than 40% of sales and are growing at a double-digit rate. After ten years of sharpening the sword, Yizumi Daji has entered a golden age of development.

Congratulations to Longhua on the successful delivery of the cold chamber die casting machine in the factory！   Bengbu Longhua , founded in Bengbu, Anhui Province of China ,in 1982, is a professional high-tech enterprise engaged in the design, manufacture and sale of cold chamber die casting machine, die casting peripheral equipment, oil field equipment and new energy equipment (natural gas, nitrogen, wellhead, casing, raw materials, liquefied petroleum gas, special gas, compressor).   On November 7, 2017, Longhua won the national high-tech enterprise certificate!   On June 26, 2019, Longhua was successfully listed in the National Science and Technology Innovation Special Edition!   On November 24, 2019, Bengbu Longhua and the "Hefei Institute of the Chinese Academy of Sciences" signed the "Intelligent High Speed, High Precision Die Casting Machine" project, which has been included in one of the four high-end manufacturing projects in Bengbu!   Longua intelligent die-casting machines are applicable to manufacture of automobile and motorcycle parts (engine cylinder block, cylinder head, crankcase, hinged door covers, oil pan, gearbox housing, gearbox end cap, dashboard, etc.), electric escalator handrail/steps, industrial/road/railway/air/agricultural machinery, spotlight shells, building material parts, furniture, aluminum arts, copper arts, magnesium alloy products, non-ferrous metal processed products and other die casting products.   Longhua die-casting machine and oilfield equipment products are exported to: Brazil, Egypt, South Africa, Vietnam, Pakistan, Bangladesh, Uruguay, India, Russia, kazakhstan, kyrgyzstan, Ukraine, Iran, Iraq, north Korea, Japan, Ecuador, the United States, South Korea, Algeria, China Taiwan and other countries and regions.   Longhua’s quality goal is that "Today’s quality means tomorrow's market".

2020 CHINA DIECASTING International Die-casting Exhibition & CHINA NONFERROUS Shanghai Non-ferrous Exhibition is about to open! There have been a lot of questions about the exhibition in recent months. Is it safe to visit the exhibition this year? What materials are needed to enter the pavilion? ◆ When can I enter the pavilion? How do I get to the pavilion? ◆ Are there any simultaneous activities on site? Now it's time for a solution! FAQ for exhibition viewing Q:What are the changes in the process of entering the pavilion this year due to the epidemic? A:This year, all visitors must meet four requirements at the same time: consistent identification (face recognition), wearing a mask, showing a green code and a body temperature not exceeding 37.3 degrees Celsius. No one can enter the exhibition hall if any of the conditions do not meet the regulations. Q:Where do I get the random code? A:Available with bid, alipay, WeChat or scan the qr code below. Q:Can I enter the exhibition hall with yellow code? A:Only the green code is allowed. Q:What are the requirements for visitors from or through high-risk areas to enter the Pavilion? A:Novel Coronavirus nucleic acid test report and green travel code must be presented before entering the novel coronavirus within 7 days. For specific implementation measures, please refer to "Shanghai will continue to strengthen the management of people coming to Shanghai and returning to Shanghai from or through high-risk areas in China". Q:What is the real-name admission system? A:All exhibition documents must provide id number application. The site with the original registered ID card, through the gate brush id card and face recognition after admission. People from Hong Kong, Macao and Taiwan regions and foreign nationals with permanent residence in China must show their valid credentials and take a photo at the registration counter before they are allowed in. Q:Do I need to make an online reservation for the exhibition in advance? A:All visitors are required to register their real names online before the exhibition and choose the time to visit. In case of peak passenger flow, please follow the instructions of the staff and attend the exhibition in batches. Q:What other epidemic prevention measures have been taken at the exhibition site this year? A:1. Carry out regular key disinfection of all high-frequency contact areas. The exhibition hall or outdoor awning public areas, corridors, passageways, toilets and other places should be disinfected at least once a day, and relevant sanitation disinfection records should be kept. Dustbins (buckets) shall be cleaned and disinfected at least once a day; The toilets in the exhibition area shall be ventilated to ensure the normal use of water supply, dryers and other facilities. Eat in designated dining areas or restaurants, avoid concentrated meals; 2. During the exhibition, alcohol-free hand sanitizer will be provided at the main entrance and exit of each pavilion for disin...

Low-pressure casting is a mature and efficient metal forming process. It places the casting mold above a sealed holding furnace filled with molten alloy. By introducing compressed air, a stable low pressure of 500-2500 mbar is formed on the molten metal surface. The liquid metal rises steadily through the riser tube to fill the mold cavity and solidifies under controlled pressure. Compared with traditional high-pressure die casting and gravity casting, this technology features stable filling, dense casting structure and ultra-high material utilization rate, becoming a preferred process for high-precision and high-reliability non-ferrous alloy parts production. Boasting prominent technical advantages, Longhua’s low-pressure casting solution delivers comprehensive upgrades in product purity, molding performance and production efficiency. The process adopts pure lower-layer molten metal for filling, effectively avoiding slag inclusion defects and improving casting purity. The adjustable pressure curve ensures stable liquid metal filling, eliminating turbulence, impact and splashing, and greatly reducing oxidative slag formation. Under pressure-assisted filling and solidification, the molten metal gains better fluidity, realizing precise molding of thin-walled, complex and large-size castings with smooth surface and clear outlines. In terms of production cost and automation, low-pressure casting requires no riser in most scenarios, with a metal recovery rate of over 70%. The uncondensed alloy liquid in the riser tube can be recycled and reused, greatly saving raw material costs. With simple operation and excellent working conditions, the process is highly compatible with mechanization and intelligent transformation, supporting one-person multi-machine or unmanned automated production lines to meet modern factory’s high-efficiency and low-consumption production needs. Widely adaptable, the low-pressure casting process is suitable for mainstream non-ferrous alloys including aluminum alloy, magnesium alloy and copper alloy, and supports multiple mold types such as sand molds, metal molds, graphite molds and gypsum molds. It covers a full range of high-end manufacturing scenarios, including automotive and motorcycle wheel hubs, engine blocks, cylinder heads, gearbox housings, chassis steering parts, turbocharger shells, aerospace magnesium-aluminum alloy components, high-speed rail structural parts, electrical power equipment accessories, bathroom hardware and special-shaped industrial castings. With 40+ years of professional manufacturing experience, 14 national invention patents and complete independent intellectual property rights, Longhua provides full-set intelligent casting equipment and customized production solutions. The company’s low-pressure casting equipment balances low investment cost, stable operation and high finished product quality, perfectly serving global customers in automotive, aerospace, new energy, electrical engineering and hardw...

Die casting, also known as high-pressure casting, is a near-net-shaping technology that has been widely used in the automotive, aerospace, and electronics industries in recent years. During the die-casting process, molten metal (generally light alloy) fills the cavity with high pressure and high speed under the action of the punch, and quickly cools to form the final casting. Die-casting is generally divided into cold-chamber die-casting and hot-chamber die-casting. Cold-chamber die-casting is mainly used for the production of large parts, such as automotive parts and communication base station cooling parts. Hot-chamber die-casting is widely used in the production of small electronic or 3C products. Process, such as USB connector, notebook shell, etc. 1. Die casting has a good automation foundation Compared with the ordinary casting process, die casting is characterized by high speed and high pressure. The products produced are generally light alloy thin-walled parts, but die casting technology is also used in the production of pure copper rotors. Unlike aluminum and magnesium alloys, pure copper The melting point is very high, so short die life during pure copper die casting is a big problem. Among all casting technologies, die casting has the highest degree of automation. Modern die-casting companies use automated die-casting island technology, which highly integrates die-casting machines (generally dozens or even hundreds) to form a fully automated production process. At the same time, using intelligent factory technology, the production process of the die casting machine is monitored, the performance and status of each die casting machine are grasped in real time, and the production process of the die casting machine is adjusted in time through big data measurement and real-time feedback to ensure Final product quality. The real-time control of die casting mold temperature is a simple example: Taking cold chamber die-casting as an example, in the production process, due to the continuous filling of the mold cavity with high-temperature liquid metal, the mold temperature continues to increase. At this time, in order to ensure that the temperature of the mold is not overheated, cooling water is generally used to cool the mold. If the design of the cooling water piping is reasonable, in general, we can ensure that the temperature of the mold reaches the so-called thermal balance by controlling the temperature and flow rate of the cooling water. From this point of view, we can design the cooling water feedback system. After we know the actual value of the mold temperature, we can control the temperature and flow rate of the cooling water through calculation and immediate feedback system, and finally we can control the temperature of the mold. This is a typical application of a smart factory for die casting at this stage. In fact, the above case of intelligent control is just a very small application scenario in the "smart factory". To achieve a ...

Precise low-speed injection control is the core key to eliminating casting defects and stabilizing product quality in die casting production. Unreasonable velocity settings for die casting machine low-speed stage easily cause air entrapment, turbulence, cold shuts and poor forming, seriously restricting the yield and precision of aluminum alloy castings for traditional die casting equipment. In actual production, excessive low-speed injection velocity drives massive air into the mold cavity and causes aluminum liquid surging in the pressure chamber, increasing liquid air content and triggering pores and sand holes. Conversely, overly low speed leads to cold insulation defects and incomplete filling. The optimal low-speed range is strictly controlled at 0.1-0.5 m/s, adopting uniform or uniformly accelerated injection to push molten metal gently. This stable flow avoids turbulence and gas dissolution, facilitates smooth cavity exhaust, and fundamentally reduces casting defects. Traditional low-speed calculation formulas have obvious deviations from actual filling effects. Manufacturers mainly rely on manual experience and repeated debugging to set parameters, resulting in unstable die casting machinery process, massive trial-production waste and prolonged R&D cycles. To solve this industry pain point, Bengbu Longhua Die Casting Machine Co., Ltd., with 38 years of manufacturing experience, cooperates with the Hefei Institutes of Physical Science, CAS to develop upgraded production technology. Longhua’s optimized intelligent process perfectly solves common defects such as pores and sand holes. It standardizes low-speed injection parameters, stabilizes continuous production quality of die casting machine, greatly improves casting precision and yield, and provides reliable, high-efficiency molding solutions for global aluminum die-casting manufacturers.