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The process principle of plastic spraying Electrostatic powder coating technology through high-voltage electrostatic adsorption to achieve high efficiency coating. The core process is: compressed air will be powder coating conveyed to the electrostatic spray gun, the muzzle of the high-voltage generator produces 80-100kV static field triggered corona discharge, so that the atomized powder charged; charged particles in the electric field under the action of directional adsorption on the surface of the grounded workpiece, along with the thickening of the coating to form a charge buildup, the uniformity of the film through the homogeneous static repulsive autonomy control; and ultimately, the formation of dense film by the high-temperature curing to complete the whole process of industrialized application from powder adsorption to coating formation. The whole process from powder adsorption to coating molding is completed. Workflow Process Name Process Purpose and Detailed Steps Related Equipment Related Materials 1. Pre-treatment Purpose: Remove the pollutants on the surface of the workpiece to form a phosphate layer that prevents rust and enhances adhesion Detailed Steps: ① Degreasing: Acidic de...

Friction welding definition Friction welding is the use of relative friction movement of the weldment to produce heat to achieve a reliable connection between the materials of a pressure welding method. The welding process is under the action of pressure, the relative movement of the material to be welded between the friction, so that the interface and its nearby temperature rises and reaches a thermoplastic state, with the role of the top forging force interfacial oxide film broken, the material undergoes plastic deformation and flow, through the interface element diffusion and recrystallization of the metallurgical reaction and the formation of joints. Friction welding principle Two round section of the metal workpiece in the friction welding before, respectively, can be clamped in the rotating chuck and can move forward to pressurize the chuck. At the beginning of welding, the workpiece 1 rotates at high speed, the workpiece 2 moves in the direction of the workpiece 1 and contacts, and a large enough friction pressure is applied to start the friction heating process. After a period of friction, the joint...

Author: Senior Engineer of Ningbo Hexin Molding Co., Ltd (20 years of experience in casting industry) 1. Strategic Value of Aluminum Alloy Materials With the deepening of global carbon emission reduction policy, the automotive industry is experiencing a structural transformation from "steel-based" to "multi-material synergy". Aluminum alloy materials have become the core breakthrough in realizing vehicle lightweighting by virtue of their low-density characteristics and recyclable advantages. In the architecture of new energy models, aluminum alloy die castings have penetrated into the body frame, three electric systems, chassis structure and other key areas, forming a lightweight solution covering the whole body. Current industrial practice shows that the use of modular die casting technology can significantly reduce the number of parts and assembly complexity. Typical cases show that through the structural integration and process innovation, a model of body-in-white successfully realized material weight reduction and production...

Machining Machining as the core technology of modern manufacturing industry, through lathe, milling machine, grinder and other professional equipment on metal, plastic and other workpieces for cutting, grinding, drilling and other processes, precise control of the geometry of the parts, the structure of the dimensions and surface finish, to ensure that from the automotive engine components to the aerospace precision parts of the whole field of manufacturing needs. With the deep integration of CNC technology and automated production lines, the machining process has realized the transformation and upgrading from traditional manual operation to intelligent programming control, which improves machining efficiency while effectively controlling production costs. The quality control system that strictly follows international standards ensures process stability in mass production through real-time monitoring of tool wear status and optimization of machining parameters. Under the current trend of Industry 4.0, machining is moving towards flexible...

In today's era of rapid development of manufacturing industry, low pressure casting technology has become one of the core processes for the production of high-end metal parts. The excellent performance of the equipment is inseparable from the standardized operation and refined management. This operation specification to improve the yield rate, to ensure production safety as the core objective, combined with many years of practical experience and the latest technology standards, systematized from the daily start-up, production process to the maintenance of the equipment of the whole chain of operating points. Whether you are new to this equipment or a technician who wants to optimize the production process, this guide provides you with a clear and practical reference basis. Daily start-up and production Routine operations during production Daily shutdown Key operations and parameters to maintain casting yields Daily polishing experiments to confirm material goodness. Effective cleaning: there...

Low-pressure casting is a casting method in which molten metal is injected into a mold cavity by gas pressure. Compared with high-pressure casting, low-pressure casting can improve the surface quality of castings, reduce porosity, and suitable for casting more complex shapes. In the process of low-pressure casting, the composition and design of the mold is critical, which directly affects the quality of castings, production efficiency and mold life. In this paper, we will discuss the main components of the low-pressure casting mold and their impact on the casting quality. The main components of low-pressure casting mold Low-pressure casting mold by the six core components of the synergistic effect: mold cavity as the core of the molding, the use of H13 hot work die steel precision machining, to ensure that the ± 0.15mm dimensional tolerances and Ra ≤ 0.8μm surface finish; injection port through the 60 ° tapered tangent design to achieve the laminar flow of the filling, the flow of the...

As an engineer deeply involved in aluminum alloy forming for more than 20 years, I am often asked about the core differences between aluminum extrusion and aluminum die casting. In this article, I will combine the high-pressure/low-pressure/gravity casting practical experience to make a systematic comparison from material science, process principle to business decision. What is aluminum extrusion? Aluminum extrusion is a solid-state process of extruding through a die, belonging to solid-state plastic forming, commonly used in the production of assembly line aluminum profiles, heat dissipation aluminum parts and so on. At its core, aluminum rods heated to a plastic state (400-500°C) are fed into an extruder and forced through a die of a specific cross-sectional shape to form a continuous profile, which can be used to manufacture long-sized products such as door and window frames, rails, and other long products (longitudinal lengths of up to 10 meters or more). Advantages of Aluminum Extrusion Aluminum extrusion products are lightweight, corrosion-resistant, and have low die investment costs (about 30,000...

As a living fossil of industrial civilization, the evolution of CNC lathe maps the eternal pursuit of human precision manufacturing. From 1300 BC Egyptian craftsmen with rope-driven wooden rotary bed, to the 21st century equipped with AI algorithms five-axis intelligent machine tools, the technology has always been in the redefinition of the "precision" of the boundaries of the industrial revolution period of steam-powered lathe will be compressed to 0.1mm processing error, while the modern CNC system through the scale closed-loop control has achieved 0.0000mm. During the industrial revolution, steam-powered lathes compressed machining errors to 0.1mm, while modern CNC systems have realized microscopic control of 0.001mm through closed-loop scale control. Especially in the field of high-performance aluminum alloy parts manufacturing, the multi-axis synergy of CNC lathe has completely changed the traditional process: Take the new energy vehicle motor shell as an example, the composite machining of its heat dissipation tooth piece and bearing bit can be completed at one time in the integrated Y-axis power turret of the CNC system, which can improve the efficiency of 400% compared with the traditional processing efficiency in sequence, and the same ...

Die casting machine is the market is more widely used mechanical products, in many industries need to use, then you know what are the top ten die casting machine brand list? The following by more than 20 years of aluminum die casting experience ningbo he Xin company for you to introduce the world's top ten brands of die casting machine. 1, Lijin / L.K Lijin Technology Group (founded in 1979 in Hong Kong) as a global die casting equipment leader, the first to realize the cold / hot room die casting machine and five-axis CNC machining centers integrated production. 2008 strategic merger and acquisition of Italy IDRA, the global market share exceeded 32%, of which more than 2800T large-scale die casting unit of the domestic market share for 15 consecutive years over 65%. 65%. The DCC series of real-time closed-loop control system developed by the company has improved the precision of die casting to ± 0.01mm (ISO international standard certification). 2, Izumi Guangdong Izumi (stock code ...

What is centrifugal casting? Centrifugal casting is a liquid forming process in which liquid metal is poured into a rotating mold by the centrifugal force generated by the rotating mold (up to 150 times the force of gravity) and rotated at high speeds (usually 250 to 1500 r/min) so that it fills the mold and solidifies under the action of centrifugal force to form a casting. The process is particularly suitable for the manufacture of marine engine cylinder liner, aerospace and high temperature parts and other harsh working conditions products - more measured data show that the centrifugal casting aluminum alloy pieces of tensile strength than the traditional sand casting to enhance the 25% or more. How Centrifugal Casting Works The centrifugal casting process begins with the injection of liquid metal into a rotating, high-temperature mold. Depending on the specific requirements of the design, the mold can rotate vertically or horizontally. During this process, centrifugal force evenly distributes the liquid metal at a pressure close to several times the force of gravity...

In 2025, the aluminum casting industry continues to show strong growth, with major plants achieving significant success in terms of technological innovation, product quality, and market share. Below is the ranking and introduction of the top 10 aluminum casting plants in 2024! These aluminum casting factories have performed well in terms of technological innovation, product quality, market share and brand influence, making significant contributions to the development of China's aluminum casting industry. In the future, these factories will continue to lead the innovation and development of the aluminum casting industry as technology continues to advance and the market continues to expand.

As a technical expert in the foundry industry for more than 20 years, I have witnessed the performance of thousands of aluminum alloys in high pressure/low pressure/gravity casting. Among the many aluminum alloy grades, 6061 and 7075 have always occupied a special position in the "golden combination". This article will be based on the engineering practice data of Ningbo Hexin, this article will be compared from the chemical composition, mechanical properties, heat treatment process and application areas and other dimensions, in-depth analysis of the performance of these two benchmark material boundaries. Aluminum 6061: all-round industrial alloy As a "deformer" in the industrial field, 6061 aluminum alloy shows unique material wisdom under the subtle proportion of magnesium and silicon elements. This aluminum-based alloy through the intelligent control of the microscopic lattice, not only can withstand the mechanical test of the structural components, but also in the processing workshop elegant transformation - whether it is under the argon arc welding gun ...

In the modern manufacturing industry under the wave of vigorous development, die-casting technology with its high efficiency, high precision characteristics, in the automobile, electronics, aerospace and many other fields widely used. Zinc die casting and aluminum die casting as the two main stream of die casting process, like two bright pearls in the manufacturing industry, each exudes a unique light, has different advantages and applicable scene. For engineers, in product design and production, accurate selection of die casting technology is crucial, which is directly related to the product performance is excellent, cost control is reasonable, production efficiency can meet expectations. This article will be in-depth analysis of zinc die casting and aluminum die casting technology, from the material characteristics, process parameters, cost composition and other dimensions of the comparison, for engineers to provide a comprehensive, detailed selection decision-making reference. Technical principle (a...

As a senior engineer of Ningbo Hexin, deep plowing casting industry for more than 20 years, I am well aware of the core position of aluminum die-casting molds in the manufacturing industry. Whether it is automotive parts, 3C electronic products, or aerospace components, aluminum die casting process of high efficiency and precision are inseparable from the mold design of the subtle support. This article will combine practical experience, system analysis of aluminum die casting mold design points, technology trends and optimization strategy, for industry colleagues to provide a practical guide. Aluminum die casting mold core value: why it is the key to success or failure of the process? Die casting mold is not only the metal molding "template", is the decisive factor of production efficiency and product quality. Its importance is reflected in three aspects: five types of aluminum die casting mold and selection strategy mold type applicable scenarios cost cycle technical characteristics prototype mold...

In this era of rapid technological iteration, the manufacturing industry is experiencing a profound change from "scale first" to "agile and efficient". Rapid mold (Rapid) Foreword: China's mold manufacturing predicament and breakthrough As a deep-rooted foundry industry for 23 years of engineers, I (He Xin) witnessed China from the mold importing country to the metamorphosis of independent innovation. In Ningbo, this mold industry gathering place, we have experienced the traditional steel mold development cycle is long, high cost of trial and error pain, but also experienced the revolutionary breakthroughs brought about by rapid mold technology. This paper will combine the high-pressure casting, low-pressure casting and other practical application scenarios, revealing the key technical logic of rapid tooling in the manufacture of aluminum alloy parts. 1, the essence of fast mold: not a compromise, but accurate matching 1.1 The three major pain points of the traditional mold 1.2 fast mold technology ...

Nowadays, with the development of computer software, artificial intelligence, the accuracy and credibility of simulation analysis software, the application of mold flow analysis software in the foundry industry is more and more common. cae simulation technology is widely used in the development of casting molds and product production. Numerical computation theory and GPU parallel technology breakthroughs, the modern casting process has entered the era of digital simulation and physical experimentation dual-wheel drive. This paper is based on the author in the field of high-pressure / low-pressure / gravity casting 23 years of engineering experience, combined with typical process cases, in-depth analysis of the application of CAE technology in the actual production of mold flow points. Casting simulation technology principles and engineering boundary conditions The nature of the casting process is a metal melt in the complex constraints of the unsteady state heat and mass transfer process, the numerical simulation needs to be established to include the Navier-Stokes equations, the ability to ...

In the manufacturing industry, die casting process is widely used in the production of all kinds of parts and components for its high precision and high production efficiency. However, the costing of die casting is often an important part of the enterprise for price setting and cost control. Correct understanding of the cost of die casting components, not only help to set reasonable prices, but also help enterprises optimize the production process, improve profits. In this article, we will deeply analyze the cost of die casting composition, provide detailed costing method, and discuss how to optimize the cost to reduce the overall cost of die casting. Is the cost of die casting high? The cost of die casting is indeed not low, which is the main reason why many enterprises hesitate to choose this process. Although die casting excels in precision, efficiency and complex part manufacturing, its high cost, especially...

Computer numerical control (CNC) is a manufacturing and processing technology, through the computer processing software pre-written program, in the CNC system through the computer control of machine tool trajectory, processing speed and other parameters, control machinery and tools according to the command like a robot to carry out a series of complex mechanical movement, the workpiece accurately carried out by the processing, revolutionized the manufacturing industry. The global CNC machine tools market is expected to grow significantly, valued at more than $128 billion by 2028.The rapid growth of CNC has surfaced the shift in manufacturing towards digitalization and precision. What is CNC? Definition and Basic Concepts CNC machining, or Computer Numerical Control machining, is a manufacturing technology that involves precision cutting and shaping of materials through computer-controlled machine tools. You can think of it as an automated method of machining that is able to follow pre...

Low pressure casting Can realize a high degree of mechanization and automation, improve productivity (10 ~ 15 type / h), it can also reduce many adverse human factors in the production process, improve the yield rate, greatly reducing the labor intensity of workers. However, the quality of low pressure casting by the process plan, process parameters, mold structure and manual operation and other factors, any design unreasonable or improper operation of the link may lead to low pressure casting defects. The generation of aluminum wheel cracks is an important factor that affects the production cost and productivity of enterprises. Therefore, it is especially important to discuss the causes of cracks in low pressure casting aluminum wheels. Next, I will discuss with you in China low pressure casting plant casting aluminum alloy automobile wheel hub crack formation and elimination measures. What is low pressure casting wheel? Low pressure casting wheels are made by...

The reliability of aluminum castings lies in the strict casting quality verification process. Through a set of casting inspection methods, quality management. Not only to ensure that each casting meets the design standards, but also to enhance its performance and long-term stability. Aluminum casting inspection methods Hexin adopts a series of precise aluminum casting inspection methods, each casting can meet the quality requirements. Each aluminum casting is rigorously inspected to meet predetermined standards for performance, dimensions and chemical composition. 1. Radiography and Visual Inspection Quality control of castings uses visual inspection techniques to ensure that castings are free of defects such as cracks, porosity, voids, etc. Each casting is inspected in detail to ensure that there is no distortion or bending. Once the inspection is complete, the casting is compared to the quality control program and process requirements. Finally, all inspection results are...

Gravity casting is in the casting process, the first solidification of the metal liquid due to thermal expansion and contraction volume contraction, need to rely on the upper part of the solidified metal liquid gravity to replenish, to complete the effect of shrinkage. Gravity casting solidification mode for the order of solidification, is the whole part in the solidification of the solidification in accordance with a certain sequence of successive solidification, relatively backward solidification position can be complementary shrinkage of the relative front of the solidification position, so that the final casting defects are concentrated in the last cooling parts (risers, gates position), to get qualified production castings. Gravity casting aluminum alloy wheel castings solidification sequence: rim - spokes - center hub (bevel) - manifold cone - - gate (riser) casting -Gate (riser) Casting process design parameters include machining allowances, process allowances (risers and other remedial shrinkage locations), metal shrinkage (shrinkage coefficients), and draw slopes, cooling system...

Die casting structure design Die casting structure design is the first step of die casting work. The reasonableness of the design and process adaptability will affect the smooth progress of the subsequent work, such as parting surface selection, the opening of the inner gate, push out the arrangement of the mechanism, the mold structure and manufacturing difficulty, alloy solidification shrinkage law, casting precision guarantee, the type of defects, etc., will be to the premise of the die casting itself craftsmanship of the advantages and disadvantages of the die casting. 1, die casting parts design considerations (1), the design of die casting involves four aspects: a, that is, pressure casting on the shape and structure of the part requirements; b, die casting process performance; c, die casting dimensional accuracy and surface requirements; d, die casting parting surface determination; Die casting parts design is an important part of die casting production technology, the design must consider the following issues: mold parting...

CNC machining allowance confirmation What is CNC machining allowance? 1. refers to the machining thickness reserved for processing the required products, after removing the reserved thickness can be obtained to meet the requirements of the size, shape and positional accuracy of the workpiece. 2. The size of the machining allowance directly affects the machining efficiency and machining quality, so the reasonable determination of the machining allowance is an important part of CNC machine tool processing. CNC machining allowance factors: workpiece material workpiece material hardness, strength, toughness and other physical properties of the size of the machining allowance has a greater impact. Tool performance Tool sharpness, wear resistance, rigidity and other properties will affect the determination of the machining allowance. Machine accuracy The positioning accuracy of the machine tool, repeat positioning accuracy, drive system stability, etc. will affect the determination of the machining allowance. Machining process Different machining processes (such as rough...

Casting aluminum alloy refers to the aluminum by adding various metal elements, through different different metal elements will have different properties of aluminum alloy different countries usually have different casting aluminum alloy, Hershey Xin engineers will be sorted out the following for the more common casting aluminum alloy, the comparison of each country's grades: the main features and uses of each brand of aluminum alloy ZL101 composition is simple, easy to melt casting, good air tightness, good welding and cutting performance, but the mechanical properties are general. Melting casting, good airtightness, welding and cutting performance is good, but the mechanical properties in general. Suitable for casting thin-walled, large area, complex shape, strength requirements are not high parts, such as pump shells, gear boxes, instrument shells. Mainly sand and metal casting. ZL101A in ZL101 based on adding trace Ti, grain refinement, strengthen the organization, the comprehensive performance of ZL101, ZL102, corrosion resistance ...