Wire Technology Research Articles

Investigation of the energizing characteristics of a metal-insulation iron-based superconducting coil

With the progress of iron-based superconducting wire and tape fabrication technologies, extensive research has been conducted on iron-based superconducting coils. A deep understanding of the energizing characteristics of these coils is crucial for their large-scale application. This study investigates two metal-insulated double pancake coils, each having a different number of turns and co-wound with Ba0.6K0.4Fe2As2 iron-based superconducting tape and stainless-steel tape. We conducted critical current tests, sudden-discharge experiments, and charge-discharge cycles at 4.2 K to obtain the time constants and characteristic resistances of the coils. Additionally, the impact of stainless-steel as co-wound material on coil performance was analyzed. Theoretical models were employed to calculate the charging processes and validate them against experimental results. This research offers valuable insights for the practical application of iron-based superconducting materials.

Microstructure and Mechanical Properties of Bimetallic Structure Fabricated through Wire Plus Arc Additive Manufacturing

This study investigates the fabrication and mechanical assessment of bimetallic structure (BMS) wall using wire plus arc additive manufacturing (WAAM) technology, employing stainless steel (SS) 304 and SS 308L SS filler wire. The usage of BMS is promoted due to the limitation faced during dissimilar welding of the SS grades. The high or improper melting of the interface will lead to elemental segregation, leading to structural failure. Producing seamless BMS plates will be an ideal replacement for dissimilarly welded joints. Notably, 308L SS demonstrates superior mechanical properties compared to 304 SS, exhibiting impressive tensile strength (TS) and exceptional ductility. BMS, constructed with 308L filler wire, closely matches these better mechanical attributes, making it an attractive choice for applications prioritizing mechanical performance. Furthermore, when compared to WAAM‐processed SS 304, BMS consistently outperforms in terms of TS while retaining remarkable ductility. This is due to the variation in the microstructure caused by complex thermal cycles. Hence, this research provides valuable insights into manufacturing and characterization of BMS, emphasizing the potential of WAAM‐processed BMS (SS 304/SS 308L) in engineering applications demanding superior mechanical properties while replacing dissimilar joints in the fields of aerospace, aviation, automobile, and power generation industries.

Cyclic fatigue resistance of two pediatric rotary files manufactured with different heat treatments: an in-vitro study.

Nickel-titanium (NiTi) instruments offer many advantages during endodontic instrumentation; however, the fracture risk within the canal remains a concern. Manufacturers continuously develop and introduce instruments to the market with supposedly enhanced cyclic fatigue resistance and increased flexibility, achieved through different proprietary manufacturing processes, the details of which have not been made public. In recent years, two rotary systems specially designed for deciduous teeth have been commercially available, but information about their performance is lacking. This investigation aimed to identify which manufacturing process provides better cyclic fatigue resistance: the AF-H Wire technology used in the AF baby rotary files (AF-f) or the CM-Wire technology used in the i3 Gold deciduous teeth rotary files (i3G-f). Forty rotary International Organization for Standardization (ISO) 25/04 files were tested in artificial canals with a standard geometry of 60° angle and 2.5 mm radius until fracture. The number of cycles to fracture was calculated, and the length of the fragments was measured. A scanning electron microscope (SEM) was used to examine the fracture surfaces and fragments. Energy dispersive spectroscopy (EDS) was used to determine the percentage weight of NiTi in each file. The statistical analysis (Mann-Whitney test) showed that the cyclic fatigue resistance of the AF-f was significantly higher (p < 0.0001) than that of the i3G-f. Additionally, there was a significant difference (p = 0.0419) in the length of the fractured fragments. All instruments showed one or more types of manufacturing defects and presented similar NiTi percentages by weight. The manufacturing process is critical to cyclic fatigue resistance, and there seems to be responsible for the difference in cyclic fatigue resistance between these similar instruments.

Implementation of microcontroller board on a sustainable and degradable PLA/flax composite substrate: a case study

In this paper, we present a novel polylactic-acid/flax-composite substrate and the implementation of a demonstrator: a microcontroller board based on commercial design. The substrate is developed for printed circuit board (PCB) applications. The pre-preg is biodegradable, reinforced, and flame-retarded. The novel material was developed to counter the increasing amount of e-waste and to improve the sustainability of the microelectronics sector. The motivation was to present a working circuit in commercial complexity that can be implemented on a rigid substrate made of natural, bio-based materials with a structure very similar to the widely used Flame Retardant Class 4 (FR4) substrate at an early technological readiness level (2–3). The circuit design is based on the Arduino Nano open-source microcontroller board design so that the demonstration could be programmable and easy to fit into education, IoT applications, and embedded designs. During the work, the design was optimized at the level of layout. The copper-clad pre-preg was then prepared and processed with subtractive printed wiring technology and through hole plating. The traditional surface mounting methodology was applied for assembly. The resulting yield of PCB production was around 50%. Signal analysis was successful with analogue data acquisition (voltage) and low-frequency (4 kHz) tests, indistinguishable from sample FR4 boards. Eventually, the samples were subjected to highly accelerated stress test (HAST). HAST tests revealed limitations compared to traditional FR4 printed circuit materials. After six cycles, the weight loss was around 30% in the case of PLA/Flax, and as three-point bending tests showed, the possible ultimate strength (25 MPa at a flexural state) was reduced by 80%. Finally, the sustainability aspect was assessed, where we found that ∼95 vol% and ∼90 wt% of the traditional substrate can be substituted, significantly easing the load of waste on the environment.

Porosity reduction in metal with hybrid wire and arc additive manufacturing technology (WAAM)

Porosity reduction in metal with hybrid wire and arc additive manufacturing technology (WAAM)

Coronary physiology assessments: historical overview and future challenges.

Coronary physiological assessment has garnered extensive application in managing patients with coronary artery disease, encompassing both acute and chronic scenarios. Beyond the historical purpose as tool to define the hemodynamic significance of a given artery lesion, coronary artery physiology allows for a complete investigation of epicardial and microvascular circulation. The longitudinal assessment of the distribution pattern of coronary disease based on pressure wire technology provides crucial information to define the best management and procedural planning. Moreover, post-percutaneous coronary intervention physiology reassessment showed a strong association with clinical outcomes and, more importantly, it can spot residual pressure gradients potentially amenable to further intervention and optimization. Growing evidence about the non-invasive angiography-based indices helps to overcome the limitations of the use of intracoronary physiology. This review aims to provide an overview of different utilizations of coronary physiology offering a historical perspective with a particular focus on current challenges and future potential applications.

Factors influencing NiTi endodontic file separation: A thematic review.

Nickel-titanium (NiTi) file separation during endodontic treatment is an undesirable event. This phenomenon needs to be understood by knowing the factors influencing fracture in endodontic files. There is a large amount of literature where these factors and their influence have been studied, increasing the knowledge about the mechanisms involved, mainly related to wire technology, file shapes and geometry, operator manipulation, the anatomy of the root canal, and the irrigation and sterilization processes. As many factors are involved, the complexity of the fracture phenomena increases and the isolated correlation of one factor with the file fracture becomes a small part of comprehending the separation phenomena. This thematic review aims to compile important reports from 2014 to 2022 on the factors influencing NiTi file separation. The information obtained was classified into wire technology, file geometry, operational aspects, irrigation and sterilization, and anatomy. For this purpose, the Scopus, Web of Science and ScienceDirect databases were consulted using a search string. Filters were applied to consolidate the final set of relevant papers covering the subject of factors influencing endodontic file separation. It was found that the fracture of NiTi files incorporates different mechanisms that operate simultaneously during the endodontic procedure and strongly affect the instrument performance. The collected information promotes good practices to prevent file separation.

Fabrication of Titanium Aluminide Alloys by Twin-Wire Tungsten Inert Gas Welding Applied with High-Frequency Induction Heating Wire Technology: Processing, Microstructure, and Properties

Fabrication of Titanium Aluminide Alloys by Twin-Wire Tungsten Inert Gas Welding Applied with High-Frequency Induction Heating Wire Technology: Processing, Microstructure, and Properties

Influence of different deposition strategies on the microstructure and mechanical properties of the laminated heterostructured material with ER130S-G HSS and 316 L SS fabricated by WAAM

Two groups of laminated heterostructured materials (LHM) thin walls with different deposition strategies and the corresponding single-material thin walls were successfully fabricated by wire and arc additive manufacturing (WAAM) technology. The deposition strategy for the LHM-1 thin walls was to change the deposited material every layer, and for the LHM-2 thin walls was to change the deposited material every two layers. The results indicate that changes in the deposition strategy could affect the volume fractions and distribution locations of different phases in LHM samples, thereby influencing the mechanical properties. Due to the dilution effect, when the two materials in the LHM samples were deposited on each other, the chemical composition of the two regions deviated. Two sets of LHM samples were prepared using the same volume fraction of 316 L stainless steel (SS) and ER130S-G high-strength steel (HSS), and the LHM-1 samples showed higher tensile strength and lower elongation. In HSS areas of the LHM-1 sample, every layer consisted of the martensite microstructure. In the HSS areas of the LHM-2 sample, one layer was composed of the martensite microstructure, while the adjacent layer was a mixed microstructure of bainite and ferrite. For LHM samples, the softer regions experiencing greater deformation during the tensile process. The lower Schmid factor of the FCC phase in the LHM-2 sample compared to the LHM-1 sample, makes it easier for the former to yield, thereby resulting in superior ductility of the LHM-2 sample. The results of the investigate reveal that the possibility of controlling the microstructure and properties by altering deposition strategies in WAAM technology.

Improving network data security interaction methods under wireless communication

AbstractWith the development of information technology, network data security issues have received widespread attention. Under traditional wired communication networks, it not only has high installation and maintenance costs, requires a lot of manpower and resources, but also has low security performance, which is not significant in improving network data security. How to improve network data security, prevent data from being maliciously leaked, stolen, and effectively transmitted in the network, is a major challenge facing today's society. Wireless communication technology has brought new ideas to improve network data security. This article analyzed the role of wireless communication technology in improving network data security and selected 30 enterprises as the research objects. This article studied the role of traditional wired communication technology and wireless communication technology in network data security protection and compared several indicators based on virus detection rate, defense rate, data transmission speed, and customer satisfaction. The experimental results showed that the average detection rate of Trojan viruses based on wireless communication technology was 80.8%, and the average defense rate against viruses using antivirus software was 58%. In the case of virus attacks, the average transmission speed was 2.4 s, and the average satisfaction of users with wireless communication technology in virus defense was 6.9. It indicates that wireless communication technology has significantly improved virus detection rate, defense rate, data transmission speed, and customer satisfaction in the mode of improving network data security. This technology has significant significance and value for users.

MEASUREMENT SYSTEMS ENSURING THE SAFETY OF TRANSPORT SYSTEMS

In the modern world, transportation systems have become an integral part of our lives. Various transportation systems such as air, land, sea, and railways play a significant role in meeting people's daily needs and sustaining economic activities. However, the safety of these transportation systems is a primary concern. Reducing the risk of accidents, preventing theft, and sabotage are crucial factors for a secure transportation system. Therefore, measurement systems that ensure the safety of transport systems have been developed. Measurement systems that ensure the safety of transport systems typically consist of the following key components: Sensors: A range of sensors is used to monitor and measure safety, detecting variables such as temperature, pressure, speed, vibration, location, and environmental conditions. Sensors continuously monitor the system's condition and collect data. Data Processing Unit: Data collected by sensors is analyzed by a specialized data processing unit. This unit can detect anomalies and create early warning systems for problem identification. Communication Systems: The resulting data must be transmitted to a central control center. Communication systems facilitate the secure and fast transfer of data. Wireless or wired communication technologies can be used. Control Systems: Control systems that can intervene automatically when needed are available to maintain the safety of transportation systems. These systems can initiate emergency procedures when they detect hazardous conditions. Data Storage and Analysis: Storing and long-term analysis of the acquired data is essential to enhance the safety of the transport system. These analyses help in better understanding the system and making improvements. Measurement systems ensuring the safety of transport systems can be applied to various modes of transportation. Here are some sample applications: Rail Transportation: The safety of rail transportation requires continuous monitoring of factors such as the condition of the rails, train speed, the number of passengers, and security threats. Measurement systems are crucial to ensure the safe operation of trains. Air Transportation: Safety in air transportation encompasses technical conditions of aircraft, weather conditions, and air traffic control, among other factors. Measurement systems help prevent accidents and incidents in this industry. Land Transportation: Safety in land transportation involves factors like vehicle movement, road conditions, and accidents. Smart traffic systems and sensors are used to optimize traffic management. Keywords: sensors, safe transportation, radio-frequency technology, communication systems, artificial intelligence.

Experimental study on mechanical properties and bond behavior of wire and arc additive manufacturing steel bar

Wire and arc additive manufacturing (WAAM) technology is a feasible method for manufacturing steel bars to achieve the digital and automatic construction of reinforced concrete structures. However, the bond behavior between the WAAM steel bar and concrete does not meet the requirements of engineering applications. To enhance the bond behavior of the WAAM steel bar, the profiled corrugated steel bar is proposed. In this paper, one group of the natural roughness steel bar and three groups of the profiled corrugated steel bar with varying rib depths were fabricated using WAAM. A comprehensive description of the manufacturing principle and macrostructure of the WAAM steel bar was provided. Additionally, the mechanical properties and bond behavior of the WAAM steel bar were systematically investigated. The results show that the manufacturing precision of the WAAM steel bar can be improved by dynamically controlling the molten pool. The structure of the corrugated rib significantly enhances the bond strength and initial stiffness, with a slight reduction in the equivalent tensile strength and elongation compared to the WAAM natural roughness steel bar. Moreover, the normalized bond strength and initial stiffness of the WAAM profiled corrugated steel bar increase with the increase in rib depth. The experimental curve shows that the five-branch bond stress-slip model developed in this study can evaluate the bond behavior between the WAAM steel bar and concrete satisfactorily.

Experimental Studies and Analysis of 1550 nm Laser as Optical Wireless Communication Link in Simulated Rainy, Foggy, and Heating Conditions According to Indian Atmosphere

Interests are vastly growing on optical wireless communication (OWC) technology in recent times. This technology is mostly used where fibber-optic or wired communication technology cannot be used. However, the main constraints of this OWC technology are the attenuation of the laser power due to different atmospheric effects. This paper investigates the effects on the 1550 nm laser link in the various simulated atmospheric conditions, such as rain, fog, and heat in terms of signal to noise ratio (SNR), bit error rate (BER), optical power attenuation with the help of some pre-established models etc. For analysing the previously mentioned parameters in different simulated atmospheric conditions, a 10 MHz, NRZ-OOK, OWC communication channel has been established using fibber coupled acousto-optic modulator (FCAOM), and all the parameters are measured for 18 m link range. The peculiarity of this article is that the calculations and results have been made with keeping in mind the Indian atmospheric conditions. Indian weather report data has been used to do so.

The Effect of Spread Spectrum Modulation on Power Line Communications

Interference in Power Line Communication (PLC) is examined in this paper. PLC is a wired communication technology that provides communication and data transmission over the existing electrical network. It uses the electrical wiring in buildings or the electrical grid to transmit data signals between devices, rather than using dedicated communication cables or wireless signals. Many applications employ PLC technologies, which have the benefit of leveraging existing power connections for both power and data transfer, reducing cost and complexity. These interactions may be observed in contemporary smart grids and automobile power networks, where lengthy cables, switching power supplies and communication links all work together but exacerbate Electromagnetic Interference (EMI) problems. This research examines the effects of spread spectrum methods used to reduce EMI from power converters on PLC systems. Spread Spectrum Modulation (SSM) and its three variants, Sine, Random and Sawtooth, are frequently employed to meet the requirements of electromagnetic compatibility, however, there are some repercussions that may be detrimental to the converter or the rest of the electrical network. These outcomes occur for various modulation algorithm settings and at various frequencies. Measurements are made utilising the Frame Error Rate (FER) value provided by the PLC link system to ascertain the interference produced by a Silicon Carbide (SiC)-based DC-DC converter in order to investigate these concerns and standardise an assessment approach. To examine the effect of SSM on reducing EMI in the frequency domain, the peak index of a CISPR-16 EMI receiver is used.

Research on the Design of Innovative Acrylic Fashion Accessories Using Aluminum Wire Technology Combined with Glue Dispensing Technology

We integrated the design of acrylic fashion accessorized by combining aluminum wire technology with the application of glue technology to introduce iron window grille elements for the integration of culture and fashion. First, the relevant theories were discussed through a literature review, and then experimental sample pattern-making and fabric production were created. The results were integrated with theory. The research results showed that it was feasible to combine aluminum wire techniques with ultraviolet (UV) glue to create acrylic designs for fashion accessories that displayed avant-garde fashion, fashion-style aesthetic designs, and unique visual symbol designs. Each design was transformed into the shape of iron window grilles to deliver the meaning of reunion, peace, and promotion. The more local the design was, the more fashionable and international it became. With material characteristics, epoxy and acrylic materials were used to reveal the texture of stained glass which enhanced the visual beauty of fashion accessories through light and shadow exposure and color rendering.

Degradation of I c due to residual stress in high-performance Nb3Sn wires submitted to compressive transverse force

Future particle colliders in search for new physics at the energy frontier require the development of accelerator magnets capable of producing fields well beyond those attainable with Nb-Ti. As the next generation of high-field accelerator magnets is presently planned to be based on Nb3Sn, it becomes crucial to establish precisely the mechanical limits at which this brittle and strain sensitive superconductor can operate safely. This paper reports on the stress dependence and the permanent reduction of the critical current under transverse compressive loads up to 240 MPa in state-of-the-art restacked-rod-process (RRP®) and powder-in-tube Nb3Sn wires. Single-wire experiments were performed at 4.2 K in magnetic fields ranging between 16 T and 19 T on resin-impregnated samples to imitate the operating conditions of a wire in the Rutherford cable of an accelerator magnet. Depending on the wire technology, we measured irreversible stress limit values—defined as the transverse stress value, leading to a permanent reduction in the critical current of 5%, assessed by convention at 19 T—ranging between 110 MPa and 175 MPa. This permanent reduction of the critical current after mechanical unload can occur for two reasons, which can be concomitant: the plastic deformation of the Cu matrix that produces residual stresses on the Nb3Sn lattice and the formation of cracks. We developed a method to identify the dominant degradation mechanism in our experiments that allowed us to predict the fraction of critical current lost due to residual stresses. Interestingly, we found that in the RRP® wires the measured reduction of Ic after unload from stresses as high as 240 MPa can be fully ascribed to residual stresses. An independent confirmation of this conclusion coming from a study combining x-ray tomography and deep learning Convolutional Neural Networks is also reported.

Neurological Complications of Immune Checkpoint Inhibitors (P12-13.004)

<h3>Objective:</h3> To better understand the risks of neurologic toxicities associated with immune checkpoint inhibitors (ICIs). <h3>Background:</h3> Case reports have described various neurological immune-related adverse events (irAEs). There still exists a dearth of data regarding their incidence and prognosis. <h3>Design/Methods:</h3> A single center retrospective study analyzing patients between ages of 18–85 years old from the dates of 3/1/2011 to 9/30/2018 who received immunotherapy for conditions including urothelial cancer, lung cancer, gastric and colorectal cancer, head and neck cancer, lymphoma, melanoma, and renal cell carcinoma. <h3>Results:</h3> Of the 1914 subjects who received immunotherapy, 276 experienced neurotoxicity from multiple causes. Of those 276 subjects, 11 suffered neurological irAEs directly from ICI use. Of the 940 subjects who received pembrolizumab alone, 4 (0.004%) developed neurotoxicity 165 to 575 days from administration. Of the 534 subjects who received nivolumab alone, 3 (0.00956%) developed neurotoxicity 477 days from administration. Of the 594 subjects who received ipilimumab alone, 1 (0.0016%) developed neurotoxicity 27 days from administration. Of the 101 subjects who received nivolumab and ipilimumab, 1 (0.0099%) developed neurotoxicity 65 days from administration. Of the 140 subjects who received pembrolizumab and ipilimumab, 2 (0.014%) developed neurotoxicity 240 to 343 days from administration. Ninety-two subjects received atezolizumab, 7 received avelumab, and 18 received durvalumab; none of these patients experienced neurological irAEs. The neurological irAEs observed were neuropathy (45.45%), acute inflammatory demyelinating polyneuropathy (9.09%), ataxia (9.09%), seizure disorder (18.18%), autoimmune encephalitis (18.18%), receptive aphasia (9.09%) and myopathy (9.09%). Neurological irAEs were treated with steroids, intravenous immunoglobulin, and symptomatic medications like gabapentin, duloxetine, levetiracetam, and thiamine, with about 36% of subjects achieving symptom control. <h3>Conclusions:</h3> Neurological irAEs were extremely rare in our clinical population, but may correlate to the ICI used. We need larger studies to determine the most effective therapy for each neurological irAE and allow oncologists to recognize and treat them expeditiously. <b>Disclosure:</b> Dr. Babu has nothing to disclose. Dr. Sharda has nothing to disclose. Dr. Kolli has nothing to disclose. Dr. Mora-Rodriguez has nothing to disclose. An immediate family member of Dr. Boldig has received personal compensation for serving as an employee of Custom Wire Technologies. An immediate family member of Dr. Boldig has stock in Custom Wire Technologies. Tyra Gatewood has nothing to disclose. Dr. Shah has received personal compensation in the range of $500-$4,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Seagen. Dr. Shah has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for EMD Serono. Dr. Shah has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for Exelixis. Dr. Swank has received personal compensation in the range of $500-$4,999 for serving as a Consultant for Iovance Pharmaceuticals. Dr. Swank has received personal compensation in the range of $500-$4,999 for serving on a Speakers Bureau for HOPA. Dr. Pina has nothing to disclose. Dr. Peguero has nothing to disclose. Dr. Jaffer has nothing to disclose. Dr. Mokhtari has nothing to disclose. Neha Verma has nothing to disclose.

Production cost modeling for permanent magnet synchronous machines for electric vehicles

A cost model for the estimation of production costs of permanent magnet synchronous machines (PMSM) is presented, which allows to alter design choices such as wire technology, winding layout, cooling system, materials and more. With the goal to make results reproducible by others, the methods are explained in detail and used data and assumptions are given. The developed model helps to understand the interaction between the design of PMSM, manufacturing methods and the resulting costs. With it, different PMSM technologies and materials can be evaluated regarding its influence on the production costs, which is a perquisite to find the best compromise between performance and costs. Production volume is shown to be the most decisive factor for the resulting production costs. Between minimum and maximum assumed volumes, an average cost per unit reduction of 67% could be observed. Furthermore, the results imply that the winding production is responsible for the greatest part of the overall costs, followed by the rotor assembly (including rare earth magnets). When using the model to compare different wire types, it can be stated that up to a production volume of roughly 150,000 units/year, hairpin wires are more expensive to produce. Above this volume, hairpin windings will get cheaper than round wire windings due to its higher grade of automation of the production process. Through the conducted investigations and the presented results, it is demonstrated that the cost model can serve to evaluate technologies with regards to costs in the early development stage. This way a more holistic assessment of technologies for PMSM is possible, helping to find the ideal compromises between costs and performance and to increase the attractiveness of sustainable mobility.

A COMPARISON OF CUTTING -EDGE WIRELESS TECHNOLOGY

In this digital world people are adopting wireless communication as it lower the power consumption,increases data rate and low range communication through n number of users. Communication systems can be wired or wireless, using guided or unguided communication media. In wired technology, information is communicated or transmitted over media such as coaxial cable, twisted pair cable, or fiber optic links (also called guided media). Directs propagation from one point to another. Wireless technology uses electromagnetic waves, such as radio frequencies, infrared rays, and satellites, to communicate or transmit information through free space (the air) and direct its propagation from one point to another. This study focuses on wireless technology elements, types, benefits, and drawbacks, as well as a literature analysis on numerous applications and advancements in wireless technology and systems. In addition, a comparison of various forms of wireless technology based on numerous aspects and qualities was examined. KEYWORDS: Wireless technology, Communication medium, Wi-Fi, Bluetooth, Wireless protocols.

Microstructure and Mechanical Properties of High-Strength, Low-Alloy Steel Thin-Wall Fabricated with Wire and Arc Additive Manufacturing

High-strength, low-alloy (HSLA) steel has attracted much attention in the manufacturing industry because of its good combination of high strength and toughness, low cost, and good formability. Wire and arc additive manufacturing (WAAM) technology can realize the rapid prototyping of HSLA steel parts. This study investigated a 26-layer HSLA steel component fabricated with the WAAM technique. The microstructure of the deposited wall of ER120S-G is mainly acicular ferrite, and there are longitudinal, preferentially growing dendrites along the deposition direction. With the deposition height accumulation, the top sample’s interlayer temperature increases and the amount of acicular ferrite in the microstructure decreases, while the amount of quasi-polygonal ferrite, Widmanstatten ferrite increases. The changes in microhardness were consistent with the corresponding microstructure gradients: the microhardness of the top sample showed a decreasing trend along the deposition direction, while the microhardness of the middle sample was uniform and stable. The present work shows that the mechanical properties of HSLA steel parts deposited using WAAM technology have good strength and toughness. The microstructure gradient of the sample along the deposition direction did not lead to a significant difference in the tensile strength of the sample at different heights. On the contrary, the ductility of the longitudinal sample is slightly lower than that of the transverse sample, indicating some anisotropy in the deposited sample, which is related to the directional growth of grains along the direction of heat flow. From the current work, the thin wall of HSLA steel prepared with the WAAM process has good mechanical properties, which indicates that it is feasible to replace the traditional processing method with the WAAM process to rapidly manufacture an HSLA steel structure meeting the performance requirements.