Study on cracks and process improvement for case hardened gear shaft straightening

Ma, Wenbo; Shen, Hongyao; Xu, Guangyue

doi:10.21203/rs.3.rs-231810/v1

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…In multifactorial experimental studies, a main effect is the examination of the effect of change in one independent variable on the dependent variable alone. The interaction effect is a reflection of the interdependence and mutual constraints of two or more independent variables that jointly influence the changes in the dependent variable [10]. Based on the experimental test data of the joint pullout force in table 3, a main effect analysis was performed using the experimental data to obtain the main effect trend diagram of the pullout force of the through-hole cartridge solder joint as shown in figure 3.…”

Section: Main Effect and Interaction Analysismentioning

confidence: 99%

Study of Tensile Strength of Solder Joints of Through-Hole Cartridge Components Based on Full Factorial Design of Experiments

Zhang,

Fan,

Deng

et al. 2023

Advances in Transdisciplinary Engineering

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This study conducts an experimental study of the tensile strength of cartridge solder joints for the effect of welding process parameters on the tensile properties of cartridge components. To design 16 sets of different combinations of assembly process parameters based on full analysis factor experiments, to complete the cartridge assembly components solder joint tension test experiments and obtain the corresponding solder joint tensile strength data; The main and interaction effects of the welded joint tensile strength data were analyzed to clarify the degree of influence of each process parameter on the tensile strength of welded joints. The results show that the main effect analysis, with a main effect value of 10.81 for the solder dispensing time, has the most significant effect on the tensile strength of the cartridge component solder joints; In the interaction analysis, the interaction effect value of solder dispensing time with spot diameter is 3.14, which has a significant effect on the tensile strength of the cartridge solder joints. At the same time, the increase of solder dispensing time and spot diameter increases the tensile strength of the solder joint, showing a positive correlation. Therefore, setting long solder dispensing time and large spot diameter can improve the tensile strength of cartridge solder joints.

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Section: Main Effect and Interaction Analysismentioning

confidence: 99%

Study of Tensile Strength of Solder Joints of Through-Hole Cartridge Components Based on Full Factorial Design of Experiments

Zhang,

Fan,

Deng

et al. 2023

Advances in Transdisciplinary Engineering

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show abstract

“…Such processes can be used to straighten hardened shafts, and the straightening process is carried out manually or automatically by a straightening machine. The straightening mechanism uses strikes, which create plastic deformations that expand the material locally, leading to the straightening of the shafts themselves [24,25].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Form of a Hardened Metal Workpiece during the Straightening Process

et al. 2023

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In industry, metal workpieces are often heat-treated to improve their mechanical properties, which leads to unwanted deformations and changes in their geometry. Due to their high hardness (60 HRC or more), conventional bending and rolling straightening approaches are not effective, as a failure of the material occurs. The aim of the research was to develop a predictive model that predicts the change in the form of a hardened workpiece as a function of the arbitrary set of strikes that deform the surface plastically. A large-scale laboratory experiment was carried out in which a database of 3063 samples was prepared, based on the controlled application of plastic deformations on the surface of the workpiece and high-resolution capture of the workpiece geometry. The different types of input data, describing, on the one hand, the performed plastic surface deformations on the workpieces, and on the other hand the point cloud of the workpiece geometry, were combined appropriately into a form that is a suitable input for a U-Net convolutional neural network. The U-Net model’s performance was investigated using three statistical indicators. These indicators were: relative absolute error (RAE), root mean squared error (RMSE), and relative squared error (RSE). The results showed that the model had excellent prediction performance, with the mean values of RMSE less than 0.013, RAE less than 0.05, and RSE less than 0.004 on test data. Based on the results, we concluded that the proposed model could be a useful tool for designing an optimal straightening strategy for high-hardness metal workpieces. Our results will open the doors to implementing digital sustainability techniques, since more efficient handling will result in fewer subsequent heat treatments and shorter handling times. An important goal of digital sustainability is to reduce electricity consumption in production, which this approach will certainly do.

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Analysis of damage origin of bevel gear wheels

Maláková

Sivák

Fedorko

et al. 2023

Engineering Failure Analysis

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Study on cracks and process improvement for case hardened gear shaft straightening

Cited by 3 publications

References 19 publications

Study of Tensile Strength of Solder Joints of Through-Hole Cartridge Components Based on Full Factorial Design of Experiments

Study of Tensile Strength of Solder Joints of Through-Hole Cartridge Components Based on Full Factorial Design of Experiments

Prediction of the Form of a Hardened Metal Workpiece during the Straightening Process

Analysis of damage origin of bevel gear wheels

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