Properties of Padding Welds Made of CuAl2 Multiwire and CuAl7 Wire in TIG Process
Round 1
Reviewer 1 Report
Review report: Properties of padding welds made of CuAl2 multiwire and CuAl7 wire in TIG process. The detail comments are listed below:
1. Abstract: Add some quantitative results in the abstract section. Also, remove the unnecessary information presented at the start of the abstract section.
2. Introduction: In place of citing multiple references, explain the individual work of the author and try to make a bridge between current and previous work. Mention the clear gap and objective. Refer to recently published work on TIG welding: https://doi.org/10.1007/s10853-023-08723-w; https://doi.org/10.1115/1.4062794.
3. Novelty and application: Add a separate section for novelty and application of work. The application part is not mentioned in the present manuscript.
4. Add experimental setup.
5. Mention the flow rate and purity of the shielding gas.
6. Add scale in each image and improve the quality of the images.
7. In table 3, how was the content measured?
8. It is difficult to get any information from Fig. 4.
9. Add high-magnification image in Fig. 5 and Fig. 6.
10. Defined more about the optical images presented in Fig. 5-7.
11. If possible, add the hardness measurement across the line.
12. Corrosion results need major technical discussion and mechanism information related to it.
13. If possible, add SEM image with EDS for better understanding.
14. Shorten the length of the conclusion.
NA
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
Ad.1. Some qualitative results have been added in the abstract section.
Ad.2. In the introduction section, the main work idea has been added, and its purpose and the research gap were indicated, the work is an examination of the possibility of using multi-fibre materials in welding processes, currently, there are going works on a material with an increased content of aluminum (mass 12%).
Ad.3. The separate section: novelty of idea has been added.
Ad.4. The experimental setup on which the multiwire manufacturing process was carried out has been added.
Ad.5. Shielding gas flow and purity have been indicated in Table 1.
Ad.6, 8 and 9. Images quality has been improved, and scales have been added.
Ad.7. The information about the measurement method has been added.
Ad.10. The part of the manuscript concerning optical observation has been improved.
Ad.11. Making new hardness measurements is not possible due to the limited sample material that was used for other tests.
Ad.12 and 13. Unfortunately, there is a lack of results from SEM which would be necessary for describing the results in a more detailed way. Adding additional SEM observations is not possible due to the limited sample material that was used for other studies.
Ad.14. The conclusions have been shortened.
Reviewer 2 Report
The subject presented in the article focuses on the development of welding techniques, in particular on the materials intended for welding. In the article, the authors presented a new approach to the possibility of using materials based on stranded wires in the TIG welding method. It is a shame that research results were not presented for same chemical compositions of wires. In my opinion the article has an average scientific level. In addition, the applicability of multi-wire structures in welding applications is economically unjustified and does not bring the expected quality effects.
Suggested editing corrections: the scale in Fig. 4-7 should be enlarged, because in its present form it is hardly visible.
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
Ad.1. Images quality has been improved, and scales have been added
Reviewer 3 Report
The paper compares wire for TIG application: one commercial (Aluminium bronzes, CuAl7) and one original coaxial copper coating of an aluminium core). The weld area was post-treated by HIP.
The experimental plan is presented after an introduction reporting the reasons in the article. It is the opinion of the reviewer that the work needs the introduction of a better definition of the objectives of the work e
Row 40 .. section of about 500 mm, please control the measuring unit.
Table 1 shows the process values used, but if the aim is to compare the two types of wire, why were different process parameters used? Please explain the choice.
Row 121 “.. two samples of each material were cut out of..” is enough to describe the process variability?
Row 148, Figure 3, please put a mark on the figure
Row 152. The main difference between the two solutions is the Al/Cu ratio. What is the advantage of the proposed solution concerning a pre-alloyed CuAl2wire?
Row 223, tribological test. How were the specimens cut from the material shown in Figure 3? Please put the information in “Experimental”.
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
Ad.1. In the introduction section, the main work idea has been added, and its purpose and the research gap were indicated, the work is an examination of the possibility of using multi-fiber materials in welding processes, currently, there are going works on a material with an increased content of aluminum (mass 12%).
Ad.2. Welding wire length unit has been corrected.
Ad.3. Differences in used parameters result from susceptibility to welding of each particular wire and observation of welding process stability, the multi-fiber material smoked significantly when increasing the current parametres. The information has been added to the text of the revised manuscript.
Ad.4. Yes, we agree that it would be more adequate to use more samples, but due to the number of assumed tests we could use this amount, in the next research we will focus on producing more material and making more samples
Ad.5. Images quality has been improved, and scales have been added
Ad.6. The separate section: novelty of idea has been added.
Ad.7. Adequate information has been added to the experimental section.
Reviewer 4 Report
In its present form, this paper looks more like a technical report rather than a scientific paper. The quality of the figures is poor, and it lacks the use of advanced material characterization techniques, such as SEM or XRD. Furthermore, there is no discussion made on the microstructural analysis, and no comparison is drawn to other papers in the literature. As a result, it remains unclear where this paper stands with respect to other works. The authors need to make significant improvements in the discussion and sample preparation for microstructural analysis. Therefore, I do not recommend this paper for publication in its current format. Additional comments are provided below:
1- Figures 3, 13, and 14 require a scale bar.
2- The resolution and quality of figure 4 are quite low, making the scale bars hard to read. Please enlarge the images and improve the quality of sample preparation.
3- The same comments given for figure 4 are applicable to Figures 5, 6, and 7.
4- Lines 197-201: The font size is different; please ensure consistency.
5- Present the findings in tables 7 and 8 in the form of a graph. Perhaps one graph can serve both purposes.
6- In figures 9-12, the labels of the X- and Y-axes are not in English. Please provide English labels for clarity.
7- Lines 281-284: Please proofread this section as it is currently hard to understand.
In its present form, this paper looks more like a technical report rather than a scientific paper. The quality of the figures is poor, and it lacks the use of advanced material characterization techniques, such as SEM or XRD. Furthermore, there is no discussion made on the microstructural analysis, and no comparison is drawn to other papers in the literature. As a result, it remains unclear where this paper stands with respect to other works. The authors need to make significant improvements in the discussion and sample preparation for microstructural analysis. Therefore, I do not recommend this paper for publication in its current format. Additional comments are provided below:
1- Figures 3, 13, and 14 require a scale bar.
2- The resolution and quality of figure 4 are quite low, making the scale bars hard to read. Please enlarge the images and improve the quality of sample preparation.
3- The same comments given for figure 4 are applicable to Figures 5, 6, and 7.
4- Lines 197-201: The font size is different; please ensure consistency.
5- Present the findings in tables 7 and 8 in the form of a graph. Perhaps one graph can serve both purposes.
6- In figures 9-12, the labels of the X- and Y-axes are not in English. Please provide English labels for clarity.
7- Lines 281-284: Please proofread this section as it is currently hard to understand.
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
Ad.1-3. Images quality has been improved, and scales have been added
Ad.4. A font correction has been made on the indicated lines
Ad.5. The results previously presented in Tables 7 and 8 have been converted into the form of a graph
Ad.6. The language of axes X and Y has been changed
Ad.7. The information has been re-redacted for clarity improvement.
Round 2
Reviewer 3 Report
the authors have replied to all the referee's observations, there is still an uncertainty about a unit of measurement.
row 52 is the welding wire diameter (section) 1 meter?
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
The unit of measurement and the given number refer to the length of the section, not its diameter.
"This method uses a welding wire in the form of sections of about 1 m long, which makes it easier to test new welding materials that can be manufactured in smaller series"
Reviewer 4 Report
The quality of the images is extremely poor and no adavanced matetials charactrization technique was used for microstructural analysis. Unfortuneltly, the authors did not take my previous comments seriously. For this reason, I do not recommend this paper for the publication.
The quality of the images is extremely poor and no adavanced matetials charactrization technique was used for microstructural analysis. Unfortuneltly, the authors did not take my previous comments seriously. For this reason, I do not recommend this paper for the publication.
Author Response
On behalf of the Authors, I would like to thank you for the thorough analysis, review, and valuable tips. The authors analysed the suggestions and included them in the revised manuscript, which I am submitting for review.
As answered in the first part of the review, drawings in high resolution have been added - the same as they are saved after taking them using a light microscope. Corrections have been made in the above-mentioned lines of the manuscript, a graph presenting the results from tables 7 and 8 has been prepared. The indicated difficult to understand sentence has been presented in a different, clearer way.
The accusation that the reviewer's comments were not taken seriously is groundless.
It is true that additional XRD and SEM studies have not been performed as the materials have been used up for the rest of the research and unfortunately the material cannot be analysed more extensively now. The presented work is the basic research of the subject of the project on a new CuAl material with an aluminium content above 10% by mass. For this part of the project, samples for SEM/XRD studies are not provided. These studies are foreseen in the further part of the work on the new material.
