All of the articles in this proceedings volume have been presented at the [The 7th International Conference on Advanced High Strength Steel and Press Hardening] during [August 21-23, 2024] in [Wuhan]. These articles have been peer reviewed by the members of the [Scientific Committee] and approved by...

This paper describes the hot stamping of laser spliced plates based on multi-component integration and the digital transformation of the shop floor. As the global automotive industry faces energy and environmental challenges, automotive lightweighting has become an industry trend, in which high-strength...

With the continuous development of the automotive manufacturing industry and the growing demand for lightweight solutions, the utilization of advanced materials and forming processes to enhance the performance and quality of body components has become a prevailing trend. This paper investigates the forming...

With the development of the automobile manufacturing industry and the increase of the demand for lightweight, the hot stamping of body double door rings with multi-component integrated laser splicing welded plate has become a widely used process technology. This thesis investigates the process and application...

This article studies the overall hot stamping forming process and quality improvement of passenger car door rings. As a key component of vehicle, the stability of the door ring’s quality and dimensional accuracy is crucial to the overall quality of the vehicle. However, in the large-scale production...

In this paper, a kind of water direct cooling processing device and method for high-strength automobile integrated door rings are proposed. By directly contacting water with high-temperature parts, the device can instantly vaporize water and generate air flow, so as to accelerate cooling and reduce the...

With the rapid development of the automotive industry, body lightweighting has become a key way to improve the energy efficiency and safety of automobiles. The application of high-strength materials can effectively reduce the weight of automobiles, thus reducing fuel consumption and emissions. This study...

This paper aims at the research and application of key mold technology for hot stamping integral door ring with high-strength steel. With the development of automobile industry, lightweight body has become an important trend in the manufacturing industry, and high-strength steel materials and hot stamping...

Car door rings play a crucial role in ensuring the safety and comfort of vehicles. Traditional cold forming methods used in manufacturing these components often encounter challenges related to complexity and inefficiency. This study aims to investigate the feasibility and advantages of employing hot...

Titanium alloy package edge provides additional strength and stiffness to the composite fan blades of aircraft engines, which can extend the service life of fan blades effectively. However, the titanium alloy package edge was traditionally manufactured by using CNC machine tools, involving a large cutting...

The ferritic stainless steel is one of the potential materials for manufacturing bipolar plates with good corrosion resistance and low cost. However, due to its poor formability at room temperature, cold stamping process is insufficient to form microchannels. In this work, the mechanical properties of...

Hot metal gas forming (HMGF) of tubular profiles showed an immense manufacturing potential, due to the excellent strength, lightweight and integrated manufacturing of the formed parts. In the work the influence of forming temperature, pressurization rate and bulging pressure on the of forming law of...

Sheet hydroforming has become an effective method in the material manufacturing fields because of its many advantages. A new metal forming method of drawing with two-sided pressure was investigated in this paper, in order to deal with the problem of the defects in asymmetric cylindrical part processing....

In this paper, the advanced high-strength steel roll forming technology for automobile crash beams and its applications are studied. Firstly, the importance and research background of automobile crash beams and the advantages of high-strength steel materials in improving the safety performance of automobiles...

This thesis investigates the high-strength steel forming technology in battery pack frames and its application in automotive lightweighting. Through finite element simulations and experimental tests on the structural parts of battery packs for new energy vehicles, the engineering application prospects...

Combined with the characteristics of cooling system design for hot stamping dies, this paper divides the design process of cooling water channel into three main functional parts: the design of cooling water channel holes, the design of cooling water channel centerline and the design of cooling water...

This study delves into the methodology and implementation of reducing the dwell time in hot stamping to enhance productivity. Through the optimization of dwell time, the primary objective is to boost productivity and reduce the production cycle duration, thereby introducing a more efficient and effective...

Automation lines used widely in sheet stamping industry, which can stamp the part with higher stroke rates. Die temperature may rise for the deformation and frictional induced heat, which can trigger the crack or wrinkle of part, thus make the automation line unstable. Simulation techniques of multi-strokes...

This paper investigates the MPI hot stamping technology for body lightweighting, focusing on the formability of hot stamping materials and processes for laser welded plates of high-strength steel. This technology plays a key role in car body manufacturing, especially in the production of body-in-white,...

The objective of this research is to examine the deformation of the patch plate sheet of high-strength steel body structural components during the heating process to address the specific requirements of hot-stamped high-strength steels, which are extensively utilized in the automotive industry. By analyzing...

The modern automotive industry is facing challenges in the pursuit of sustainable development, especially in reducing carbon dioxide (CO2) emissions and improving energy efficiency. In order to achieve this goal, the automobile manufacturing industry is increasingly adopting the hot stamping and forming...

This experiment devised a set of cold-hot partitioning molds for preparing U-shaped components made of 22MnB5 with variable strength. Employing a hot stamping process, the molds were set at temperatures of 400℃, 450℃, and 500℃ respectively. Samples were taken from the soft and hard regions of the fabricated...

In this study, we conducted an investigation into the multi-zone variable-strength hot stamping and forming technology within a single die. This investigation encompasses the crucial technologies of simulating and analyzing variable-strength (Tailored temperature process) hot stamping and forming, die...

Currently, commercial vehicles in China are facing severe pressure in terms of lightweighting. Hot stamping is one of the advanced process technologies that achieve the ultimate lightweighting of commercial vehicles and have the highest cost-effectiveness. Cargo box is currently one of the key lightweight...

This article uses high-strength steel plates to replace ordinary steel plates in terms of the general relationship between plate thickness reduction and strength, and designs a commercial vehicle hot press forming ultra-high strength lightweight fuel tank bracket. Based on the simulation analysis results...

This article designs a commercial vehicle hot press forming ultra-high strength and lightweight fuel tank bracket, and formulates a hot press forming process route. The model design is carried out using Siemens NX software, and the forming process analysis is carried out using AutoForm software. The...

Due to the low elongation of aluminum alloys at room temperature, which often leads to cracking during forming, hot stamping is commonly used to improve the formability of aluminum alloys. However, in traditional hot stamping processes, the solid solution treatment time is excessively long and cannot...

Nowadays, the increasing requirements for energy conservation and emission reduction have fostered the application of the hot-stamped aluminum alloy for lightweight. However, it is difficult to achieve industrialized production because of the long-term process as well as high production costs. In this...

In this study, a multi-step rapid heating procedure composed of two holding stages is developed to achieve fast alloying as well as less zinc loss of the zinc coating. The oxidation behavior during the first holding stage and the microstructure evolution during the final holding stage of the zinc coating...

This paper investigates the influence of spot-welding process on surface accuracy of cold and hot stamping assembly part. In order to control surface accuracy after spot welding, simulative work was carried out. In simulative work, welding sequence under given clamping position was considered. The results...

This article explores the influential factors leading to the failure of hot stamping molds and highlights the significance of mold maintenance. With the increasing production of electric vehicles and the adoption of lightweighting technologies, high-strength steel hot stamping forming has emerged as...

The Omega parameter offers a novel approach to quantifying line pipe steels’ fracture resistance through a post-processing 3D scanning and slicing technique. Unlike traditional parameters such as the Crack Tip Opening Angle (CTOA), Omega reduces testing costs and subjectivity and remains unaffected by...

The hydrogen embrittlement (HE) of ultra-high-strength boron steel with different prior austenite grain (PAG) sizes was investigated. By adjusting soaking times and austenitizing temperatures, samples with varying PAG sizes were obtained. The PAG size and dislocation density of the samples were measured...

Due to the introduction of hydrogen, there is a serious hydrogen embrittlement problem, which will make the material embrittlement and affect the service life and safety of steel. Therefore, the effect of adding Ti-Mo on the hydrogen embrittlement susceptibility of medium Mn steel was studied in this...

In this study, the effect of hydrogen charging treatment on the extreme tip bending performance of ultra-high strength automotive steel plates was investigated. After electrochemical hydrogenation, the extreme tip bending angle of the steel plate decreased to varying degrees, and the downward trend began...

This article investigates the effect of niobium-vanadium composite microalloying on the strength and toughness of hot press forming steel. The mechanical properties, laminated impact property, ultimate tip cold bending property, and high-speed tensile property of traditional 22MnB5 and niobium-vanadium...

The microstructure and mechanical properties of vanadium micro-alloyed Al-bearing medium-Mn steel were studied by SEM, TEM and EBSD technique. The results show that the microstructure of the steel after intercritical annealing from 710℃ to 770℃ was composed of banded δ-ferrite(δ-F), α- ferrite(F) and...

This article investigates the effect of niobium-vanadium composite microalloying on the performance of hot press forming B-pillars. Three-point bending experiments and trolley collision performance experiments on B-pillars were conducted. The results showed that during the three-point bending experiment...

For promoting the commercial application of third-generation advanced high-strength steels in the automotive industry, the enhancement of the mechanical properties and formability of medium-Mn steel is becoming a research hotspot. Use of self-developed hot-forming steel, the microstructure evolution...

Press hardening steel (PHS) is widely used in the production of automotive components. However, the traditional 22MnB5 steel, during the heating and hot stamping process, tends to develop a substantial amount of loose and easily detachable oxide scale on the surface, negatively impacting the lifespan...

15-5PH samples were prepared using the laser cladding-rollinging compaction hybrid forming process, and the impact mechanism of rolling force on the microstructure and properties of the samples during the composite forming process was systematically studied. The results indicate that under the laser...

Automotive parts for lightweight requirements continue to rise, modern body lightweight materials are moving toward the trend of multiple materials composite use. Carbon fiber/hot stamped metal composite panels with lightweight and high strength, excellent corrosion resistance, fatigue resistance and...

With the booming development of new energy vehicles, integrated die casting has become an important means of automotive parts manufacturing, and there is an urgent need for age-free heat-treated aluminium alloys in the industry. Therefore, a new ageing-free heat-treated aluminium alloy was developed...

The evolution of automobiles necessitates a balance between weight reduction and enhanced safety. Leveraging the hot stamping technique for manufacturing aluminum alloy and carbon fiber-reinforced polymer (CFRP) composites laminate offers significant potential in the automotive sector due to their advantageous...

Aluminum alloy hot stamping is an important means to achieve automobile lightweight, and the friction and wear caused by aluminum alloy adhesion in the production process is an inevitable problem. Lubrication can reduce friction and wear, but there is no special lubricant for aluminum alloy hot stamping,...

Hot stamping technology is an effective way to achieve lightweight vehicles using aluminum alloy. Aluminum alloy is increasingly used in automobile manufacturing due to its high specific strength and recyclability. However, severe high-temperature friction and wear during the hot stamping forming process...

Carbon fiber composites have a wide range of applications in body lightweighting due to their light weight, large friction coefficient and excellent mechanical properties. In the forming of body parts and subsequent operation, the composites have high requirements of available high temperature lubrication...

Coated ultra-high strength steel (UHSS) has been used in the hot stamping process. The high-temperature friction and wear of coated UHSS during hot stamping may affect its formability and tool life. The effect of temperature on the friction behaviors of alloyed galvannealed (GA), galvanized (GI) and...

Zinc-based coating hot forming steel has good cathodic protection characteristics, which makes up for the deficiency of corrosion resistance of aluminum-silicon coating products. However, in the process of hot forming, due to the existence of high temperature liquid zinc, it is easy to cause the problem...

The surface morphology of aluminum-silicon coated press hardening steel with different heating time was studied by scanning electron microscopy, and the AS150 and AS60 coatings were also compared. The results show that the dendrite phase can be formed when AS150 is heated for 3min, and the granular Al-Fe...

The present study delves into the influence of heat treatment temperature on microstructural and mechanical properties of aluminum silicon coatings applied to hot-formed steel substrates. Utilizing scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microhardness testing, a...

Based on the important demand of energy saving and emission reduction, press hardening steels have been widely used in automobile. In order to avoid oxidation of the steel during hot stamping process, aluminum-silicon coating is used. The mechanical properties of thin aluminum-silicon coating press hardening...

In recent years, the press hardening steel with thin aluminum silicon coating independently developed by relevant domestic institutions has gradually been applied in the automotive industry. The issue of whether thin aluminum silicon coated press hardening steel can replace traditional aluminum silicon...

The hot stamping technology of ultra-high-strength boron steel is an effective way to lighten the weight of automobiles. High-strength steel zinc-iron (GA) coated plates have the dual roles of barrier and cathodic protection, and have a broad application prospect in the field of boron steel hot stamping....

This paper investigates the utilization of advanced high-performance hot stamping die steel in the realm of lightweight automotive body construction, which represents a significant trend in optimizing automotive structures. It delves into the process characteristics of hot stamping high-strength steel...

In this study, the smelting process, quality control strategy and practical application of high-performance hot work die steel in hot stamping process are discussed in depth. Hot stamping technology is a new type of metal forming process for high-strength steels, which is widely used in the manufacture...

This article explores the application of Industry 4.0 concepts in the hot stamping production line and digital twin system, focusing on their role in lightweight automotive technology. It provides a detailed overview of key technological research in digital hot stamping production lines, including the...

This paper discusses the research and application of hot stamping production line based on digital mechanical servo press. With the improvement of automobile lightweight and safety performance requirements, the wide application of high-strength steel parts has become the development trend of automobile...

With the aim of investigating the optimization of hot stamping flexible production lines through queue balancing, this paper explores line balancing, mixed-line production, and the application of mixed-line production in hot stamping lines. The discussion begins with an examination of work balancing,...

This paper investigates the impact of workbench stiffness on the quality of integral door ring hot stamping forming in a mechanical servo hot stamping press and proposes a compensation control technology. The paper begins by introducing the current status and development trend of ultra-high-strength...

In this study, the thermochemical erosion of the heating roller hearth furnace conveying roller in the hot stamping production line was studied. Firstly, the application of hot stamping forming technology for high strength steel and the key position of roller hearth furnace in this technology are introduced....

Using thermal imager in hot stamping production enterprises to measure the temperature of steel sheet has the characteristics of high automation, fast response and convenient control. However, in the practical application, infrared temperature measurement generally exists the problem of inaccurate temperature...

Hot stamping is an energy-efficient and low-cost way to produce automotive parts. The hot stamping production line has a high degree of automation and a good digitalization foundation. Due to the lack of a complete information system in most workshops, the digitalized production process data often lacks...

Hot stamping production line is a key way to lighten the weight and improve the strength of automobile body. The mold circulation cooling system plays an important role in hot stamping production, which directly affects the performance and cooling effect of formed parts. This study aims to explore the...

The cooling system of hot stamping plant for automotive parts is a crucial part of automobile manufacturing. This study aims to propose an intelligent monitoring solution to solve the defects of the traditional cooling system and realize energy saving and productivity improvement. Through digital information...

The swift evolution of automobile products results in frequent changes to the business rules governing the hot forming production line. The strong connection between the original IT system's business rules and application code leads to limited flexibility and dynamism within the core module of the...

Digital twin technology has a strong ability to synchronize virtual and physical products. Therefore, in order to overcome the information blocking problem faced by the traditional screw press in the working process, this paper proposes a three-dimensional digital screw press system framework based on...

The automated 3D measurement system, utilizing structured light technology and robotics, is extensively employed in the inspection of sheet metal parts. This system provides essential data for process optimization and enhances part quality. To facilitate automated inspection, it is imperative to pre-plan...

The quality and efficiency of mold production heavily rely on the operating conditions of nitrogen gas springs. This paper presents an introduction to the operating principles and applications of nitrogen gas springs, highlighting the advantages of controllable nitrogen gas springs over conventional...

In order to control a process, it is necessary to constantly monitor it and thanks to the progress in data mining, it is now possible to continuously evaluate the information collected by the sensors. By monitoring the gas springs, not only can you have control over the effort that these elements are...

In the automotive industry, the Al-Si coating attached to the press-hardened steel (PHS) around the tailored edge was removed before laser tailor welding to prevent the formation of Al-rich ferrite in the weld zone (WZ), which weakened the mechanical properties. However, eliminating the Al-Si coating...

It is not necessary to remove the coating in advance for laser welding of zinc-based coating hot-forming steel. Under the condition of good quality of shearing edge, laser spot defocusing welding without wire filling can ensure the quality of welding seam, and achieve the tensile strength ≥ 1500MPa and...

The Al-Si-coated 22MnB5 steel used for press hardening is a pivotal lightweight material for advancing automotive weight reduction and safety standards. However, the formation of brittle δ-ferrite in the Al-Si coating during welding reduces the mechanical performance of the weld. In this investigation,...

This thesis explores the utilization of laser cutting and welding processes along with automatic welding equipment for high tensile steel plates in the realm of lightweight automotive body construction. As an important process in the field of automobile manufacturing, the laser welding technology realizes...

In the dynamic landscape of contemporary automotive manufacturing, the integration of cutting-edge technologies has become imperative to enhance efficiency and precision. This article examines the transformative impact of the TRUMPF 5-Axis Machine TruLaser Cell 8030, emphasizing its role in revolutionizing...

Laser welding is an advanced welding technology that combines sheets of different thicknesses, materials and coatings through the laser welding process. In the manufacture of hot stamped body door rings, laser splicing technology can realize lightweight design, improve body performance and reduce cost....

Molten pool and plume are both inherent physical phenomena in high-power fiber laser deep penetration welding. Among them, the molten pool is the main site for optical-thermal energy conversion, while the plume has a significant negative impact on the welding process. In this paper, the conversion and...

With the development of automotive lightweight technology, multicomponent integrated hot press forming is an important technology, which can realize lightweight car body forming with complex geometry. In the cutting process of large integrated thermoforming parts, the multi-robot multi-head synchronized...

This study is about the multi-robot collaborative cutting equipment for high efficiency of door rings to respond to the market demand and technological development trend. The high efficiency and high precision of door ring cutting are achieved through innovative solutions, such as multi-robot laser cutting...

In this paper, the laser processing technology and quality control of hot stamped parts made of high-strength steel are studied. Through in-depth on-site practice and analysis, combined with the exploration of laser cutting burrs on complex curved parts, a solution to the causes of cutting burrs is proposed....

In this paper, in response to the demand for low cost and efficiency improvement in laser cutting, a short X-axis with high dynamic performance of small mass and short stroke superimposed on a large mass X-axis and a hump-shaped motion planning method are proposed to significantly improve the cutting...

The cooperative work path automatic generation technology of dual-head laser drop feeder is studied, aiming to improve the efficiency and safety of laser cutting production line. By designing key technologies such as central control system, division of cutting tasks, real-time position feedback, collision...