There are many types of casting defects, and the causes of defects are also very complicated. Therefore, when analyzing the causes of casting defects, we should start from the specific situation, conduct a comprehensive analysis based on the characteristics, location, process and sand used, and then take corresponding technical measures to prevent and eliminate defects. 1. Not pouring Prevention methods: Increase the pouring temperature, speed up the pouring speed, and prevent intermittent pouring; Increase the cross-sectional area of the runner and the inner runner; Adjust the post-furnace batching to appropriately increase the carbon and silicon content; Strengthen the exhaust in the casting mold, reduce the amount of coal powder and organic matter added in the sand; Increase the height of the upper sand box. 2. Not full Prevention methods: Correctly estimate the amount of molten iron in the ladle; For castings with narrow runners, appropriately slow down the pouring speed to ensure that the casting is full. 3. Damage Prevention methods: When cleaning and transporting castings, pay attention to avoid various forms of excessive collision and vibration, and avoid unreasonable dropping; When cleaning the drum, strictly follow the process regulations and requirements; Modify the size of the riser and the riser neck, make the riser neck knock section, and correctly grasp the direction of the pouring riser. 4. Sticky sand and rough surface Prevention methods: When the air permeability is sufficient, use finer raw sand and appropriately increase the compactness of the molding sand; Ensure a stable effective coal powder content in the molding sand; Strictly control the moisture content of the sand; Improve the pouring system, improve the pouring operation, and reduce the pouring temperature; Control the template baking temperature, which is generally equal to or slightly higher than the molding sand temperature. 5. Sand holes Prevention methods: Increase the sticky sand content in the molding sand, add new sand in time, and improve the surface strength of the molding sand; The mold finish should be high, and the draft angle and casting fillet should be reasonably made. Damaged molds should be repaired before assembling; Shorten the placement time of sand molds before pouring; Be careful when assembling or transporting molds to avoid damage or sand particles falling into the sand mold cavity; Remove floating sand in the mold before assembling and cover the gate. 6. Seam filling and sand expansion Prevention methods: Improve the compactness of the mold and avoid local looseness; Adjust the sand mixing process, control the water content, and improve the strength of the mold sand; Reduce the pressure head of the liquid metal and reduce the pouring speed. 7. Lifting the box Prevention methods: Increase the weight of the iron weight, and remove the iron weight after the molten iron solidifies; Lower the position of the ladle and reduce the pouring speed; Cor...

Motorcycle parts die casting machines have some characteristics that make them widely used in the manufacturing process of motorcycle parts. The following are the main features of motorcycle parts die casting machines: 1. Efficient production: Die casting machines are able to produce parts with complex shapes at high speed and high efficiency. For motorcycle parts, such as engine housings, brake parts, frame connectors, etc., this efficient production capacity is very important and can quickly meet market demand. 2. Precision and complex performance: Die casting technology can produce parts with high precision and stable dimensions, which is essential to ensure the accurate assembly and performance of motorcycle parts. Through die casting, complex shapes and fine structures can be formed in one piece, reducing assembly processes and improving product quality. 3. Wide selection of materials: Motorcycle parts are usually required to have good strength, wear resistance and light weight. Die casting machines can use a variety of metal alloys, such as aluminum alloys, magnesium alloys, zinc alloys, etc., to meet the specific requirements of different parts. 4. Save material costs: Die casting technology can effectively utilize materials, reduce waste and energy consumption, and thus reduce production costs. In the production of motorcycle parts, saving material costs is an important consideration. 5. Advantages of one-piece molding: Die casting can realize the one-piece molding of complex parts, reduce welding and assembly processes, and improve the overall strength and stability of the product. For motorcycle accessories, the advantages of one-piece molding can improve the safety and reliability of the entire vehicle. 6. High degree of automation and controllability: Modern die-casting machines are usually equipped with advanced automation control systems that can accurately control the parameters in the die-casting process to ensure the quality and stability of parts. This highly automated feature makes the production process more reliable and efficient. In summary, the motorcycle accessories die-casting machine has become an important process equipment in the manufacture of motorcycle accessories with its efficient production, precise and complex performance, wide range of material selection, and cost savings. It can meet the market demand for high-quality and high-performance accessories.

From July 10 to 12, 2024, Bengbu Longhua Die Casting Machine Co., Ltd. appeared at the Shanghai New International Expo Center and participated in the highly anticipated 18th Shanghai International Diecasting and Nonferrous Casting Exhibition (abbreviated as: Shanghai Diecasting Exhibition). The booth number is N3F52. At this exhibition, Bengbu Longhua Die Casting Machine Co., Ltd. not only demonstrated its strong strength in the field of die casting, but also launched a number of patented technologies developed in cooperation with the Chinese Academy of Sciences. The appearance of these innovative technologies undoubtedly brought a refreshing experience to the audience, fully demonstrating Longhua's profound accumulation and innovation capabilities in technology research and development. As an excellent domestic die-casting machine manufacturer, Longhua Company has always adhered to technological innovation and is committed to providing customers with efficient and reliable die-casting solutions. At this exhibition, Longhua Company focused on demonstrating the new die-casting technology developed in cooperation with the Chinese Academy of Sciences. The application of these technologies not only significantly improves the performance and stability of the die-casting machine, but also significantly reduces production costs and enhances the market competitiveness of the product. At booth N3F52, Longhua Company displayed a number of carefully developed die-casting machine equipment. These equipment not only have advanced intelligent control systems, but also adopt environmentally friendly and energy-saving design concepts. Their excellent performance and efficient production capacity have won the favor of many customers. Longhua Company has always adhered to the concept of "customer first" and is committed to providing customers with comprehensive service support. At this exhibition, Longhua Company set up a special customer service area to answer customer questions on site and provide technical consultation and solutions. At the same time, Longhua Company also demonstrated its complete after-sales service system to ensure that every customer can enjoy professional and timely technical support and services. Looking into the future, Bengbu Longhua Die Casting Machine Co., Ltd. will continue to strengthen cooperation with scientific research institutions such as the Chinese Academy of Sciences, continuously increase investment in technology research and development, and promote the continuous innovation and development of die-casting technology. Longhua Company will take this Shanghai Die Casting Exhibition as an opportunity to further expand domestic and foreign markets, create greater value for customers, and jointly promote the high-quality development of the die-casting industry. We look forward to working with you to move towards a more brilliant tomorrow! Welcome to booth N3F52 to learn more about new products and technology information of Bengbu...

Cold chamber die casting machines are mainly suitable for die casting of high melting point metals. These metals usually have high melting points and good fluidity, which are suitable for stable die casting process in cold chamber die casting machines. Generally speaking, cold chamber die casting machines can be used to die cast the following types of metals: Aluminum alloys: Aluminum is the most commonly used metal for cold chamber die casting machines. Aluminum alloys have low melting points, good fluidity and processing properties, and are suitable for efficient die casting production in cold chamber die casting machines. Common aluminum alloys include ADC12, A380, etc. Magnesium alloys: Magnesium alloys can also be die cast using cold chamber die casting machines in some specific applications due to their low density, high strength and good mechanical properties. Common magnesium alloys include AZ91D, etc. Copper alloys: Copper alloys usually have high melting points and poor fluidity, but some copper alloys such as brass and tin bronze can also be die cast on some special cold chamber die casting machines. Other high melting point alloys: Some alloys with high melting points, such as zinc alloys, can also be die cast in appropriate cold chamber die casting machines. The working principle of the cold chamber die casting machine is to heat the metal to melt in a separate melting chamber, and then fill the molten metal into the mold by pressure to form the part. Due to the characteristics of this type of machine, it is able to handle high melting point metals and maintain a stable operating temperature, making it suitable for die casting production of the above-mentioned types of metals.

Selecting the right crucible for your die casting machine is an important step to ensure an efficient die casting process and stable product quality. The following are the key factors in selecting a crucible: 1. Die casting materials and alloy types: The first thing to consider is the type of die casting materials and alloys you commonly use, such as aluminum alloys, zinc alloys, magnesium alloys, etc. Different materials have different melting points and melting characteristics, so you need to select the corresponding crucible to ensure that these alloys can be properly heated and insulated. 2. Crucible capacity and production needs: Choose a crucible with the appropriate capacity based on your production scale and the amount of metal liquid alloy required for each die casting operation. The capacity of the crucible should be able to meet your production batch size and frequency to ensure continuous production and efficiency. 3. Heating method and energy type: Crucibles are usually heated by resistance heating or gas heating. Choose a heating method that suits your factory's energy supply and ensures that it can provide stable and efficient heating capabilities. 4. Durability and material selection: The crucible needs to be resistant to high temperatures, wear and corrosion to withstand the high temperatures and erosion of metal liquid alloys in die casting operations. Selecting crucibles made of high-quality materials and refractory materials can extend service life and reduce maintenance costs. 5. Control system and automation capabilities: Modern crucibles are usually equipped with advanced temperature and pressure control systems to ensure that metal alloys maintain stable process parameters throughout the heating and insulation process. Some crucibles also have automated control and data acquisition functions, which help improve the control and consistency of the production process. 6. Safety and environmental considerations: Ensure that the selected crucible meets safety standards and considers its impact on the environment. Some crucible designs include exhaust gas treatment systems to reduce negative impacts on the environment and ensure the safety of operators. 7. Cost-effectiveness and comprehensive considerations: Finally, choose the appropriate crucible based on budget and funding constraints. Consider the purchase cost, operating cost and maintenance cost to ensure that the investment can achieve long-term benefits and production advantages. Taking the above factors into consideration, choosing a crucible suitable for a specific die casting process and production needs is one of the key factors to ensure die casting production efficiency and product quality. It is recommended to have a detailed discussion and evaluation with the die casting equipment manufacturer or an experienced engineer to obtain professional advice and support.

According to data released by the China Foundry Association, driven by the rapid growth of new energy vehicles and the development of light-weight vehicles, the overall output of automotive aluminum alloy die-casting in my country has shown a fluctuating upward trend in recent years, and large-scale integrated die-casting has triggered an unstoppable development trend in the global die-casting industry. The 2024 Shanghai International Nonferrous Diecasting Exhibition (CID & CNF) with the theme of "New Energy Vehicle Development Builds a New Global Pattern of Die Casting" was grandly opened, and 900T-16000T super-large automotive die-casting parts made their first splendid appearance. The following is a display of die-casting parts of super-large automotive casting manufacturing equipment 900T-16000T: Integrated rear base plate large casting (9000T die casting machine) Integrated die-casting front cabin (9000T die casting machine) Double-shot battery body integrated die-casting overall chassis (13000T double-shot die-casting island die casting machine) Battery tray (16000T die casting machine) The above products show that with the continuous advancement of die casting technology, extra-large die-castings will play a key role in promoting the light-weighting of new energy vehicles, improving energy efficiency and reducing costs. In the future, large-scale integrated die-casting technology will be the key technical direction for leading companies in the industry to deploy, and will contribute more to the development of the global new energy vehicle industry!

Eid al-Adha is one of the three major festivals of Islam. "Eid al-Adha" means "sacrifice" or "sacrifice of animals", which means to offer sacrifices to God devoutly. "Eid al-Adha" also means "closeness" or "approach". The main activity of Eid al-Adha is to sacrifice livestock, usually cattle, sheep, goats and other livestock. This activity reflects Pakistanis' reverence and gratitude for life, and is also a respect and care for livestock. At the same time, it is also a sacrificial culture, praying for the gods' blessing and peace through sacrificing livestock. It’s a time of joy,prayer, and giving! Bengbu Longhua Die Casting Machine Co., Ltd. Eid Adha Mubarak to all Muslim brothers and sisters!  عيد سعيد.عيد مبارك تقبل الله منا ومنكم صالح الاعمال!

During the operation of the cold chamber die casting machine, due to high pressure, high temperature and frequent mechanical movement, some parts are prone to wear or damage. The following are some common vulnerable parts of the cold chamber die casting machine and their maintenance suggestions: Common vulnerable parts 1. Mold Reason: Frequent impact and cooling cycle of high temperature and high pressure metal can easily cause mold wear and thermal fatigue cracks. Maintenance suggestions: Check the mold surface regularly, repair and replace it in time; keep the mold surface clean and smooth, and use high-quality lubricants and release agents. 2. Nozzle (injection nozzle) Reason: The high temperature and high pressure impact of molten metal can cause the nozzle to wear or clog. Maintenance suggestions: Clean the nozzle regularly, check its wear, and replace it if necessary; ensure that the appropriate nozzle material and design are used. 3. Plunger rod (injection plunger) Reason: The plunger rod is subjected to high pressure and friction during the injection process and is prone to wear. Maintenance suggestions: Check the surface condition of the plunger rod regularly to ensure that it is well lubricated and replace the severely worn plunger rod in time. 4. Sealing rings and seals Cause: Sealing rings and seals in hydraulic systems are prone to aging, deformation or damage under high pressure, resulting in hydraulic oil leakage. Maintenance suggestions: Regularly check and replace sealing rings and seals to ensure the sealing performance of the hydraulic system and use high-quality sealing materials. 5. Guide pins and guide sleeves Cause: Guide pins and guide sleeves are subject to greater friction during mold closing and opening and are prone to wear. Maintenance suggestions: Regularly lubricate guide pins and guide sleeves, check their wear and replace them when necessary. 6. Hydraulic system Cause: Hydraulic oil pumps, valves and cylinders are prone to wear and aging under high-pressure working environments, resulting in reduced system efficiency or failure. Maintenance suggestions: Regularly replace hydraulic oil, keep the hydraulic system clean, check the working status of each component, and repair or replace faulty components in a timely manner. 7. Electrical components Cause: Frequent electrical operations and environmental factors (such as high temperature and high humidity) may cause damage to electrical components. Maintenance suggestions: Regularly check and test electrical components to ensure their normal operation and prevent electrical failures from affecting production. Maintenance and care recommendations Regular inspections: Develop a detailed inspection plan, regularly inspect and maintain each key component, and promptly identify and resolve potential problems. Use high-quality accessories: Select high-quality wearing parts and consumables to extend the life of the equipment and reduce the failure rate. Train operators: Provi...