In industrial maintenance operations, ball mill drum liner nuts frequently loosen due to prolonged exposure to friction, material impact, and operational stresses, compromising equipment efficiency and lifespan. Traditional manual tightening poses significant safety risks. We present a specialized robotic arm solution for this critical task, detailing its kinematic modeling, simulation, and operational validation. Robotic Arm… Read more: Kinematic Simulation and Analysis of Ball Mill Drum Nut Tightening Robotic Arm

Large semi-autogenous grinding (SAG) mills are critical for mineral processing operations, yet their efficiency is frequently compromised by premature liner failure. This necessitates frequent maintenance shutdowns, reducing operational availability to approximately 80% and significantly impacting plant productivity. Traditional liner materials like high-manganese steel exhibit inadequate wear resistance under low-stress conditions, while high-chromium cast iron faces… Read more: Optimizing Heat Treatment for Enhanced Performance of SAG Mill Liners

Abstract This article delves into the characteristics, locations, and mechanisms of shrinkage defects such as shrinkages and porosity in investment casting. It analyzes the primary causes of these defects and presents comprehensive prevention strategies to effectively reduce them, thus lowering costs and enhancing productivity. 1. Introduction Investment casting, also known as lost-wax casting, is a… Read more: Investment Casting Shrinkage Defects

Rolling mill vibration theory is critical for sheet quality and equipment stability. This work addresses horizontal nonlinear vibrations through fractional-order modeling and introduces a hydraulic intelligent lining plate for vibration absorption. We establish a fractional-order dynamic model considering horizontal dynamic excitation from rolling forces, nonlinear damping/stiffness between bearing seats and frames, and mechanical gaps: $$\ddot{x}(t)… Read more: Horizontal Nonlinear Vibration Control in Rolling Mills Using Intelligent Lining Plates

1. Cylinder Body Structure and Original Defects Compressor Component Details Rotor Diameter φ816 mm Compression Medium LPG (Liquefied Petroleum Gas) Cylinder Body Structure Composed of inlet casing (cylinder head) and main cylinder body, with horizontal split structure for each section and vertical flange connection Bearing Box Cover Material Q235R 2. Defects after Cylinder Body Machining… Read more: The Improvement of the Repair Quality of Screw Compressor Martensitic Cylinder body Casting Defects

The lightweight design of automotive components critically supports overall vehicle weight reduction, enhances product quality, and drives cost efficiency. This study focuses on the innovative structural optimization of a subframe for a new energy vehicle, leveraging die casting technology. The traditional welded assembly is replaced by a single-piece die-casting approach, aiming for structural performance gains… Read more: Innovative Design Optimization of Die-Casting Subframe for Enhanced Performance and Lightweighting

1. Part Structure and Material Analysis Analysis Aspect Details Part Structure Outer contour size: 1040 mm×760 mm×933 mm, material: ZG25CrNiMo, density: 7.85 g/cm³, maximum wall thickness: about 187 mm, minimum wall thickness: 45 mm, small end wall thickness is thicker, large end wall thickness is uniform without large hot spots Part Material ZG25CrNiMo, good toughness, high… Read more: Optimization Design and Defect Analysis of Casting Process for Box

As a researcher dedicated to optimizing industrial processes, I have focused on addressing inefficiencies in ball mill liner replacement—a critical yet labor-intensive task in mining and material processing. Traditional methods, such as manual labor or crane-assisted operations, pose significant safety risks and downtime. To overcome these challenges, I designed a six-degree-of-freedom (6-DOF) robotic arm tailored… Read more: Kinematic Analysis and Simulation of a Six-DOF Robotic Arm for Ball Mill Liner Replacement

Bucket teeth represent the most severely worn components in mining excavation operations due to enduring impact loads and friction from ore and rock. This results in wear, scratching, or fracture. As high-consumption, frequently replaced components, rising demand substantially increases operational costs. Effective control of bucket tooth consumption thus becomes critical for cost management. By analyzing… Read more: Enhancing the Performance of Domestic Mining Excavator Bucket Teeth

1. Exhaust Pipe Casting Introduction Casting Name Material Tensile Strength Yield Strength Elongation Casting Process C24 – R12V280ZJ Diesel Engine Exhaust Pipe (Left/Right, 1/2) and C716V280ZJ Diesel Engine Exhaust Pipe (1/2) QT400 – 18 ≥400MPa ≥250MPa ≥18% Furan resin self – hardening sand molding and core – making, one mold with 4 pieces, upper and lower… Read more: Diesel Engine Exhaust Pipe Casting Defects Analysis and Prevention Measures

During the 14th Annual Conference of the China Foundry Association, our Executive Vice President and Secretary-General Zhang Zhiyong released comprehensive statistics on the China casting industry. The data reveals significant developments in production volumes, material composition, and market dynamics, reinforcing China’s pivotal role in global manufacturing. Total casting output reached 49.4 million metric tons in… Read more: China Casting Industry Report 2017

1. Introduction The production of silicon-molybdenum heat-resistant ductile iron exhaust manifolds in our company has faced challenges in eliminating shrinkage defects. The unique properties of the material and the complex design of the manifolds have contributed to this issue. 1.1 Background Our company manufactures a variety of casting materials for different automotive and industrial applications.… Read more: Casting Defects and Prevention: Solving Shrinkage in Silicon Molybdenum Ductile Iron Exhaust Manifolds

China’s steel casting industry has undergone transformative technological advancements, significantly enhancing the quality of large and medium steel castings. This evolution is driven by sophisticated equipment, computational tools, and refined process controls. Below, we explore key developments, service domains, and quality optimization methodologies. 1. Technological Evolution in China Steel Casting Equipment modernization remains central to… Read more: Optimization Strategies for Large and Medium Steel Castings in China

In recent years, the global industrialization drive has accelerated, with policies encouraging advancements in large castings production. As a result, output growth rates have surged, driven by enhanced process technologies and equipment in foundries. This progress is evident in sectors like automotive, internal combustion engines, machine tools, power generation, and rail transport, where large castings… Read more: A Method for Casting Internal Threads in Large Castings

Our company developed 500mm ductile iron valve body castings for Kubota Corporation, Japan. The valve body (770mm × 699mm × 203mm) weighed 360kg with 50mm maximum wall thickness. Material requirements included FCD45 (QT450-10 equivalent) with tensile strength σb > 450MPa, yield strength σ0.2 > 310MPa, elongation δ > 10%, hardness 143-217HB, ferritic matrix with <10%… Read more: Development of Ductile Iron Valve Body Castings

Aluminum alloy castings are extensively utilized in aerospace, automotive, and rail industries due to their superior strength-to-weight ratio and corrosion resistance. Thin-wall structures, typically under 6mm thick, present significant manufacturing challenges including premature solidification, incomplete filling, and gas porosity. Squeeze casting—applying high pressure during solidification—effectively mitigates these issues by enhancing metal fluidity and reducing shrinkage… Read more: Squeeze Casting of Aluminum Alloy Thin-Wall Components: Process Design and Optimization

1. Introduction 2. Initial Casting Process Simulation Analysis 2.1 Mathematical Model Establishment 2.2 Physical Model Component Description Casting Maximum diameter Φ140mm, length 298mm, maximum wall thickness 19mm Mold – Baffle – Insulation Coating – 2.3 Grid Division Object Grid Type Grid Density Face Grid Number Body Grid Number Mold, Baffle Non – structure tetrahedron Reduced – – Casting,… Read more: Optimization of Casting Process for Nodular Cast Iron Cylinder Liner

Bucket teeth are critical excavator casting parts mounted on the front edge of excavator buckets, functioning as cantilever components subjected to bending moments and intense impact-abrasive wear during rock, ore, and soil excavation. This article comprehensively analyzes wear mechanisms and material selection strategies for these essential excavator casting parts. Wear Mechanisms Primary wear mechanisms governing… Read more: Excavator Bucket Teeth: Wear Mechanisms and Material Selection

Research on Abrasive Wear Characteristics of Tractor Casting Crawler Plates As the most numerous wear part in tractors, casting crawler plates endure extreme working conditions including direct contact with soil/abrasives, impact loads, tensile stresses, and bending moments. Our research systematically compares wear resistance of various tractor casting materials through laboratory and field tests, analyzing failure… Read more: Abrasion grooves

Manufacturing complex turbocharger shells presents significant challenges due to intricate thin-walled structures, multi-layer geometries, low-volume production, and diverse product specifications. Traditional casting methods struggle with dimensional inaccuracies, surface defects, and consistently high rejection rates. To overcome these limitations, our foundry implemented Three-Dimensional Printing and Gluing (3DP) technology in 2017, fundamentally transforming our approach to shell… Read more: Advancing Complex Turbocharger Shell Casting Through 3DP Technology

1. Introduction Lost foam casting technology has developed rapidly in recent years due to its advantages such as low pollution, flexible processing, low labor intensity, and good repeatability. However, in the production of shell products, casting defects such as sand burning, porosity, and sand washing often occur. This article analyzes the causes of these defects… Read more: Analysis and Improvement of Casting Defects in Lost Foam Casting Process

1. Introduction Steel casting plays a crucial role in various industrial fields due to its excellent mechanical properties. However, the issue of pore defects is prevalent, posing a significant threat to the overall quality and subsequent application safety of steel castings. This article focuses on analyzing the formation mechanism of pore defects in steel casting,… Read more: Control Technology and Process Improvement of Pore Defects in Steel Casting

Blow hole defects represent one of the most prevalent and challenging issues in wet sand casting processes, particularly for complex components like engine cylinder blocks. These subsurface voids compromise structural integrity and lead to significant scrap rates. This article analyzes the formation mechanisms of blow hole defects in cylinder blocks and presents validated solutions implemented… Read more: Blow Hole Defect in Cylinder Block Casting: Formation Mechanisms and Mitigation Strategies

1. Introduction Investment casting is a highly precise and complex manufacturing process widely used in the production of various components, especially those with high quality requirements. In the context of locomotive manufacturing, the axle box body is a crucial component that demands excellent mechanical properties, dimensional accuracy, and internal quality. This article focuses on the… Read more: Investment Casting of Axle Box Body for Locomotive Bogie

Abstract: This article focuses on the development of the shell forming process for engineering jacket sets in vacuum lost foam casting. It begins with an introduction to the importance of the wheel-side jacket set as a crucial safety component in vehicle systems and the quality issues faced in its production using the traditional lost foam… Read more: Engineering Jacket Set Vacuum Lost Foam Casting Shell Forming Process Development

Abstract: This article focuses on the research of investment casting technology for K648 superalloy castings with a hollow wax mold structure. It analyzes the factors affecting the dimensional accuracy of investment castings, especially emphasizing the role of the hollow wax mold structure. Through a series of experiments and analyses, it demonstrates the significant impact of… Read more: Research on Investment Casting Technology of K648 Superalloy Castings Based on Hollow Wax Mold

1. Introduction Lost foam casting is a modern casting process with unique advantages. In the production of heavy transmission housing, it plays a crucial role. However, there are also some challenges in ensuring the quality of castings. This article focuses on the quality control of heavy transmission housing in lost foam casting, aiming to reduce… Read more: Heavy Transmission Housing Lost Foam Casting Quality Control

Abstract: This article focuses on the impact of preform shape on the final forging of excavator bucket teeth. It begins with an introduction to the importance of bucket teeth in excavators and the need for optimizing their manufacturing processes. The research involves analyzing the shape characteristics of bucket teeth, designing preforms, conducting numerical simulations using… Read more: The Influence of Preform Shape on the Final Forging of Excavator Bucket Teeth and Related Research

1. Introduction Lost foam casting (LFC) is a modern casting process that has gained significant attention in the manufacturing industry due to its numerous advantages. This process involves the use of a polystyrene foam pattern that is coated with a refractory material and then surrounded by unbonded sand. When the molten metal is poured into… Read more: Lost Foam Casting Technology for Large – Sized and Thin – Walled Shell Parts

1. Introduction Lost foam casting is a revolutionary casting method that has gained significant attention in the manufacturing industry. It offers numerous advantages over traditional casting techniques, making it a preferred choice for many applications. This article delves into the details of the lost foam casting process, its engineering design aspects, and various applications. 1.1… Read more: Lost Foam Casting: Process, Engineering Design, and Applications

Abstract: This article focuses on the research of the investment casting process of impellers using additive manufacturing technology. It includes the design of pouring systems, numerical simulation analysis, and the actual casting process. The combination of additive manufacturing and investment casting shows great potential in producing high-quality impeller castings. 1. Introduction Investment casting is a… Read more: Research on Investment Casting Process of Impeller Based on Additive Manufacturing

1. Introduction Lost foam casting is a modern casting process that has gained significant attention in the manufacturing industry. It combines the advantages of foam lost foam casting and investment casting, making it a promising technique for producing high-quality castings. In this process, the coating plays a crucial role as it affects the quality of… Read more: The Influence of Mixing Time and Standing Time on the Properties of Lost Foam Casting Coating

Abstract: This article focuses on the research of investment casting technology for K648 superalloy castings with a hollow wax mold structure. It analyzes the factors affecting the dimensional accuracy of investment castings, especially emphasizing the role of the hollow wax mold structure. Through a series of experiments and analyses, it demonstrates the significant impact of… Read more: Research on Investment Casting Technology of K648 Superalloy Castings Based on Hollow Wax Mold

1. Introduction Lost foam casting, also known as full mold casting, is a unique casting process that has gained significant attention in the manufacturing industry. This process involves creating a foam pattern that is an exact replica of the desired casting, coating it with a refractory material, and then burying it in a sand mold.… Read more: In-depth Analysis of Lost Foam Casting of Carbon Defects and Solutions

Abstract: This article comprehensively discusses the application of the furan resin lost foam casting process in the production of large machine tool castings. It begins with an introduction to the production status, challenges, and the basic principles and prospects of the lost foam casting process. Subsequently, it elaborates on the theoretical foundation of the process,… Read more: Application of Furan Resin Lost Foam Casting Process in the Production of Large Machine Tool Castings

The automotive industry’s rapid growth demands efficient production systems, particularly for critical components like the engine cylinder block. These blocks vary widely in geometry, mass, and surface features, posing challenges for automated handling. Traditional robot fixtures require frequent manual adjustments during product changeovers, leading to downtime and high maintenance costs. This paper presents a novel engine cylinder… Read more: Robot Fixture for Engine Cylinder Block Handling

1. Introduction Lost foam casting has emerged as a significant casting process with numerous advantages over traditional methods. In the context of machine tool spindle box castings, which have complex structures and high-quality requirements, the application of lost foam casting presents both opportunities and challenges. This article delves into the details of this application, exploring… Read more: Lost Foam Casting Technology in Machine Tool Spindle Box Casting

1. Introduction Lost foam casting is a modern casting process that has gained significant attention in the foundry industry. It offers several advantages over traditional casting methods, such as improved dimensional accuracy, reduced machining requirements, and the ability to produce complex geometries. However, like any manufacturing process, it also has its limitations and challenges. This… Read more: Lost Foam Casting: Adaptation Conditions, Applicable Countermeasures and Future Development

1. Introduction In open-pit mining operations, electric shovels play a crucial role. The bucket teeth of electric shovels are an important part that directly contacts the ore during the shovel loading process. The wear and detachment of bucket teeth can have a significant impact on the efficiency and safety of mining operations. This article will… Read more: Analysis of Bucket Teeth in Open-pit Mine Electric Shovels and Related Research

Abstract: This article focuses on the study of magnesium – based ceramic cores for stainless steel investment casting. It discusses the preparation process, properties, and the influence of various factors on the cores. Additionally, it analyzes the potential casting defects associated with the use of these cores and provides possible solutions. The research aims to… Read more: Stainless Steel Investment Casting and Analysis of Casting Defects

1. Introduction Investment casting, also known as the lost wax process, has a long history and is widely used in the manufacturing industry. It is renowned for its ability to produce complex-shaped components with high dimensional accuracy and good surface finish. Centrifugal impellers, being crucial components in centrifugal compressors, pose significant manufacturing challenges due to… Read more: Comprehensive Exploration of Investment Casting of Centrifugal Impeller Manufacturing Process

1. Introduction Bucket teeth play a crucial role in the performance of excavators. The quality of bucket teeth directly affects the efficiency and durability of excavation work. In recent years, with the continuous development of construction machinery, the research on bucket teeth welding technology has become increasingly important. This article will focus on the welding… Read more: Research and Application of Bucket Teeth Welding Technology

1. Introduction Lost foam casting is an advanced manufacturing process that has been widely used in various industries. In the automotive industry, it has shown great potential in the production of engine cylinder block castings. This article will focus on the application of lost foam casting in engine cylinder block castings, discussing its process, advantages,… Read more: Lost Foam Casting in Engine Cylinder Block Casting

As a researcher specializing in advanced manufacturing techniques, I recently conducted a comprehensive study to optimize the investment casting process for a duplex stainless steel closed impeller. This project aimed to address persistent shrinkage defects in critical areas such as the hub and caliber ring while enhancing production efficiency and yield. The following sections detail… Read more: Optimization of Investment Casting Process for Duplex Stainless Steel Closed Impeller

1. Introduction Investment casting is a precision casting method widely used in the manufacturing of various components, especially those with complex geometries and high precision requirements. In this article, we focus on the investment casting process of a fixed disk used in an automotive air – conditioning compressor. The fixed disk is a crucial part,… Read more: Design and Optimization of Investment Casting Process for Fixed Disk

Abstract This article focuses on the lost foam casting process for semi-closed castings. It analyzes the production process, defects, and corresponding improvement measures. Through experiments and research, it is found that tilting the semi-closed part at a 45° angle for box molding and using an external negative pressure tube can effectively improve the casting quality and… Read more: Lost Foam Casting Technology for Semi-Closed Castings: Research and Practice

This paper focuses on the defect detection of aluminum alloy casting wheels, a crucial aspect in ensuring vehicle safety and quality. With the increasing demand for automotive products, the accurate and efficient detection of wheel defects has become essential. We explore the application of the YOLOv8 algorithm in this field, analyze its advantages and limitations,… Read more: Defect Detection of Aluminum Alloy Casting Wheels A Comprehensive Analysis Based on YOLOv8 and Related Technologies

1. Introduction Pressure casting is a widely used manufacturing process in the industry, especially for producing components with complex shapes and high – dimensional accuracy. Magnesium alloys, due to their excellent casting properties, are frequently employed in pressure casting. However, the high – speed and high – pressure conditions during the casting process often lead… Read more: Numerical Simulation and Defect Prediction in Pressure Casting A Comprehensive Review of SPH – FEM Coupling Method

Abstract: This article focuses on the investment casting process of ZL114A alloy seal sleeves. It begins with an introduction to the importance and challenges of investment casting in manufacturing components like seal sleeves. The structure and preprocessing settings of the casting are detailed, followed by numerical simulation results and discussions. The verification of simulation results… Read more: Optimization of Investment Casting Process of ZL114A Alloy Seal Sleeve and Analysis of Casting Defects

1. Introduction Gearbox casting is a crucial component in mechanical systems, and the production process significantly impacts the overall performance and quality of machinery. Lost foam casting, a modern casting technique, has emerged as a promising method for gearbox casting production. This article aims to provide a detailed exploration of lost foam casting in the… Read more: Lost Foam Casting in Gearbox Casting Production

1. Introduction Diesel engines play a crucial role in the automotive and industrial sectors, powering a wide range of vehicles such as trucks, buses, and construction machinery. The cylinder block, as a key component of the diesel engine, has a significant impact on the engine’s performance, reliability, and durability. High – performance diesel engine cylinder… Read more: Analysis and Optimization of Casting Defects in High – Performance Diesel Engine Cylinder Blocks

1. Introduction Lost foam casting is a modern casting process that has gained significant popularity in the manufacturing industry. It offers several advantages such as the ability to produce complex shapes, reduced machining requirements, and improved dimensional accuracy. However, like any casting process, it is also prone to certain defects that can affect the quality… Read more: Analysis and Improvement of Casting Defects in Lost Foam Casting of Aluminum Alloy Shells

This article focuses on the challenges and solutions related to casting defects in valve hall fittings used in high – voltage direct – current (HVDC) transmission systems. Valve hall fittings are crucial components in HVDC conversion stations. Due to their specific requirements such as small quantity, diverse varieties, and high – quality standards, they are… Read more: Solving Casting Defects in Valve Hall Fittings A Comprehensive Guide

1. Introduction Hydraulic excavators play a crucial role in modern engineering construction, especially in disaster rescue and construction projects. With the development of intelligent technology, the intelligent research of excavators has become a hot topic in the construction machinery industry. The trajectory planning of the excavator’s working device is a key part of its intelligent… Read more: The Trajectory Planning of Bucket Tooth of Excavator Working Device

This article focuses on the manufacturing process defects of casting products used in motor train units. Through in – depth research and a series of analysis methods such as macroscopic observation, metallographic examination, and mechanical property testing, it comprehensively analyzes various types of defects. It details the causes, impacts, and preventive measures of these defects,… Read more: The Comprehensive Analysis of Manufacturing Process Defects in Casting Products for Motor Train Units

1. Introduction In the realm of coal mining machinery, the guide shoe casting of a coal mining machine is a crucial component. It plays a vital role in ensuring the stable operation of the coal mining machine on the scraper conveyor, acting as a support and guiding element. Any defect in these castings can lead… Read more: Analysis and Solutions for Defects in Coal Mining Machine Guide Shoe Castings

Abstract Bucket teeth are crucial components in excavators, enduring significant impacts during the excavation process. Ensuring their structural integrity and performance under complex loading conditions is vital. This article delves into a comprehensive dynamics analysis of bucket teeth for excavators, leveraging reverse engineering techniques. It presents a detailed methodology encompassing reverse modeling, finite element analysis… Read more: Dynamics Analysis of Bucket Teeth for Excavators Based on Reverse Engineering

1. Introduction Titanium alloys, especially ZTC4 titanium alloy, have found extensive applications in the aerospace, medical, and marine industries due to their outstanding properties such as low density, high strength – to – weight ratio, and excellent corrosion resistance. In the aerospace field, ZTC4 titanium alloy is commonly used in the manufacturing of complex –… Read more: Fluorescent Defect Detection of ZTC4 Titanium Alloy Gearbox Housing Castings A Comprehensive Study

Abstract In order to obtain dense microstructure, superior performance, and prevent crack formation in investment casting couplers, an orthogonal test was designed to determine the optimal parameters for steel casting. The optimal parameters were identified as a pouring temperature of 1,570°C, mold shell preheating temperature of 425°C, and pouring time of 29 seconds. Casting simulations… Read more: Precision Steel Casting Process and Solidification Microstructure of Locomotive Couplers

1. Introduction TiB₂ ceramic particle – reinforced aluminum matrix composites are high – performance materials. By dispersing TiB₂ ceramic particles in the aluminum matrix through in – situ reactions, the properties of the materials are significantly enhanced. These composites possess excellent characteristics such as high melting point, high hardness, high elastic modulus, good chemical stability,… Read more: Laser Spot Welding Process for Defects in TiB₂-Aluminum Matrix Composite Castings A Comprehensive Study