Sometimes there are customers consulting the gravity die casting machine, but did you know? In fact, there is no such thing as a gravity die casting machine. There are only two machines, a gravity casting machine and a die casting machine. (Gravity casting machine is also called gravity casting machine, also written as "casting machine") The two machines are completely different , Bengbu Longhua Die Casting Machine will introduce to you their differences. The casting principle adopted by the gravity casting machine is the gravity casting principle, which is a casting process that relies on the earth's gravity to make the aluminum liquid flow into the mold. There are also centrifugal casting processes, which also belong to the scope of gravity casting. Gravity casting machines are usually used when producing parts with complex internal shapes. The die casting machine adopts the principle of pressure casting, that is, the molten metal is poured into the pressure chamber by mechanical force, and then the pressure is formed by the linear movement of the injection rod and the injection head, forcing the molten aluminum to fill the mold. Generally, die casting machines are used when the shape of the casting is complicated but the internal structure is relatively simple. Bengbu Longhua Die Casting Machine has focused on casting production for 38 years. If you need it, please contact Bengbu Longhua.

Due to the fast running speed, high clamping force and frequent work of the die-casting machine, the related parts of the column frame of the die-casting machine may become loose, and the assembly accuracy will gradually change, which cannot meet the working requirements of the die-casting machine. The column frame must be adjusted every six months. Some related parts are adjusted and tightened to prevent loosening.   1. Adjust the parallelism of the working surface of the movable seat plate The parallelism of the working surface of the dynamic setting seat plate is an important technical indicator to measure the working performance of the die casting machine. If the parallelism error is too large, it will seriously affect the normal operation and product quality of the die casting machine, and there may be flying materials and products. The flash edge is large, and it may even be broken due to uneven force on the pillar.    2. Adjust the sliding feet of the middle plate   The design of the sliding foot of the middle plate is to support part of the weight of the middle plate on the steel belt, reducing the weight of the middle plate borne by the coring column, thereby reducing the wear of the middle plate copper division and the coring column, and extending its service life. The adjustment of the sliding foot of the middle board should be properly tight. When the adjustment is too loose, the sliding foot will lose its proper function. When the adjustment is too tight, the friction resistance will increase significantly, which will seriously affect the mold opening and clamping movement.   3. Regularly tighten the connecting screws of the thimble cylinder    The thimble cylinder has a lot of work times, especially when the working pressure of the cylinder is set too high, the installation screws may loosen, and need to be checked regularly, and tightened in time when loosened.

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 concept Low-pressure casting means that the casting mold is generally placed above a sealed holding furnace containing alloy liquid. Compressed air is introduced into the holding furnace to cause a low pressure (conventional 500-2500 mbar) on the surface of the molten metal, so that the liquid metal is connected by the furnace A riser tube inside the metal and mold cavity rises to fill the mold and controls the method of solidification casting. This casting method is well packed, the castings are densely organized, and it is easy to cast large and thin-walled complex castings. Generally, no riser is required, and the metal recovery rate is high (generally more than 70%). Easy to automate. Compared with high pressure casting, the equipment cost is lower, but the production efficiency is lower. Compared with gravity casting, it is generally used to cast nonferrous alloys. Low-pressure casting features Low-pressure casting can use sand, metal, graphite, gypsum, etc. 1) Filling with pure metal liquid improves the purity of castings. Because the slag generally floats on the surface of the molten metal, and low-pressure casting is realized by the molten metal in the lower part of the holding furnace through the riser tube, effectively avoiding the possibility of the slag entering the mold cavity. However, the dross caused by repeated scouring inside the riser tube requires precautions, and a filter screen is generally placed during the casting process. 2) The pressurized pressure curve is adjustable. If the setting is reasonable, the filling of the liquid metal is stable, which reduces or avoids the phenomenon of tumbling, impact, and splashing of the liquid metal during filling, thereby reducing the formation of oxidized slag. 3) The moldability of the casting is good, and the filling of the molten metal under pressure can improve the fluidity of the molten metal, which is beneficial to the formation of castings with clear outline and smooth surface, and is more beneficial to the molding of large thin-walled castings. 4) The casting is crystallized and solidified under the action of pressure, which can be fully compensated and the casting structure is dense. 5) The recovery rate of the molten metal is improved. In general, no riser is needed, and the uncondensed metal in the riser can be returned to the crucible for repeated use, which greatly improves the recovery rate of the molten metal. Generally up to more than 70%. 6) The production operation is convenient, the labor conditions are good, the production efficiency is high, and it is easy to realize mechanization and automation. With the improvement of intelligence and automation technology, an automated casting line with one person, multiple machines or unmanned operation can be realized. Low-pressure casting plus common alloys Aluminum alloy, magnesium alloy, copper alloy, etc. Low-pressure casting conventional casting types Wheels of vehicles such as automobiles, motorcycle...