Questions tagged [welding]
Use this tag when the question deals with the process of making a weld. For questions about weld design or the use of welds, use the [welds].
55
questions
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1answer
26 views
Is it possible to spot weld three rather than two plates?
I have a situation where ideally, I would like to resistance spot weld three rather than the usual two plates together (individual plate thickness approximately 0.7mm). Is this at all possible? If not,...
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1answer
68 views
Laser beam welding
I would like to use a laser beam to weld small metal parts that are located within an air tight enclosure but want the laser head to be located outside the enclosure which would require the laser beam ...
0
votes
1answer
39 views
Plate thickness for repair of completely corroded web
The web of a H-section column has been completely corroded at the air-moisture interface with the concrete encasement leaving a hole in the web. The proposal is to break out the existing concrete and ...
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2answers
23 views
200A tig welder enough to weld 8mm thick steel flat bar/stainless steel sheet/tubing
I would like a tig welder. It has to be able to weld 8mm thick steel flat bar so we can fix the front gate if it breaks.
I also want to be able to do stainless and aluminium for projects.
It seems ...
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0answers
17 views
Proper name for this weld adapter/sleeve/stub
I'm studying the design and construction of viewports for vacuum systems. Usually, the window is bonded to a welding ring, which is then welded to a stainless flange. (See the cross section below for ...
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0answers
24 views
What is the smallest size of pipe to which I can Weld a 1 inch pipe Perpendicular to the Axis?
I would to know what is (or how to calculate) the size (dia) if the smallest pipe to which I can weld a 1 inch pipe from the side of the bigger pipe perpendicular to its axis (like a tee).
0
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1answer
63 views
Arc-welding 2mm thick steel at an angle without burning-through
I'm learning a bit of stick welding since I keep needing it for certain projects. Total beginner.
The latest thing I decided to make is a table similar to this one:
The material is 2mm thick ...
0
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0answers
6 views
Can anyone help me to simulate welding joint in ABAQUS of dissimilar materials to find out the temperature distribution and the heat affected zone?
I want to simulate the welding joint between mild steel (AISI 1020) and stainless steel (SAE 304) by Arc and TIG welding process to find out the temperature distribution curve in the welding and heat ...
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0answers
19 views
Copying the pipe element without dismantling
I know for sure that this is possible to copy and fabricate the corroded element of a pipe without its dismantling in order to replace later when it is ready. How is this achieved? For example, we ...
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0answers
20 views
Phase prediction by cct diagram
Can someone please help in finding out the phase proportion of each phase w.r.t time , cooling rate and temperature by using (mathematical model to predict phases from given cct diagram)
Leblond ...
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0answers
20 views
How to find phase proportion at equilibrium - from iron-carbon diagram - Leblond
{Equilibrium proportion P, this is the proportion which is reached at a constant temperature after an infinitely long time:P is also the austenite proportion in the case of extremely slow heating. It ...
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2answers
386 views
Stick welding inner corner
I'm having trouble welding the inner corners of my material. Welding material is sometimes deposited on either one side or both sides, but never really connecting the two parts.
Side/flat welds work ...
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0answers
21 views
joining an iron cylinder with an aluminium plate
I have to join very rigidly an iron cylinder (length 30 cm, thickness 1.5mm) with an aluminium plate. I'm not expert in welding but I've read that it is not possible to weld these two metals. So I ...
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1answer
127 views
Stainless steel wire mesh spot welded to a frame
Can anybody tell me how to make a similar welding job - that is to spot weld a thin stainless steel wire mesh to a stainless steel frame. What machine and technique should be used to accomplish this ...
3
votes
1answer
33 views
How to test Cross Wire Welds
What is the best way to test the weld strength of a cross wire weld? For example, a wire grid with .212 dia wire x .212 dia wire.
I cannot find any solid information online for testing cross wire ...
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3answers
51 views
small relatively inexpensive crack detection apparatus for bike shops
Is there a relatively inexpensive (let's say under $500US) crack-detection device and related mobile app that would be easy enough for a non-engineer/non-metallurgist to use to determine whether a ...
0
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1answer
40 views
What settings to set to weld aluminum with TIG?
I bought a Everlast 205 AC/DC and I am new to welding. I would like to experiment with aluminum welding but my electrode doesn't last very long. The arc-cone is pretty wide and I cannot establish a ...
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1answer
62 views
Recommendations on a rigid connection between materials
I am trying to construct a torsion pendulum/balance for a physics experiment but the research papers are always missing specifics on how the certain connections are made.
I am looking for ...
3
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1answer
757 views
Short circuit in welding
All I know about welding is it is a technique in which electrode is connected to one terminal and the gripper connected to workpiece is in connection with the other terminal. As current passes and ...
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2answers
133 views
What are the advantages of different types of groove in welding?
In welding, we have different types of grooves like V-shaped groove, U-shaped groove, Double V, Double U, J and Double J. What is the advantage of each kind over the other?
2
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2answers
329 views
Fillet weld strength calculation
I have 2 plates that are fillet welded to each other. How can I determinate the max force the weld can take before it cracks?
The plates are only welded on one side because the other side is not ...
2
votes
1answer
118 views
Arc welder? Cheap welding device for chainmail/chainmail jewelry
I'm hoping this is the correct StackExchange for this question/request for advice.
I'm looking to buy a welder to introduce me a little to welding, my main use-case right now is the hobby projects I ...
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0answers
65 views
Welding rods: Why are some DC and other AC also?
The last time I welded was too many years ago in engineering school but a friend and I recently bought a welding machine and have set about trying to learn how to weld.
In researching what welding ...
2
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1answer
51 views
Best way to manufacture stainless steel apparatus?
Shown in the images below I have designed a small stainless steel apparatus with accompanying hollow metal cylinders ontop.
I'm looking into larger quantity production and simply CNC'ing these would ...
0
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2answers
137 views
Can I keep hardened steel cool with ice while welding?
I would like to weld a piece of hardened steel but i don't want to ruin the treatment on the tip of the piece.
Can i put some ice in the middle of the shaft so the heat generated from the welding (...
0
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1answer
114 views
Welding Aluminum to Medium Carbon Steel [closed]
I have a table flat surface made from aluminum, and the table legs are made from medium carbon steel. What are 3 welding processes that could be used to weld the legs to the flat surface.
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3answers
59 views
Heating up Tool Steel with a welder
I'm a newbie of electricity and I would like to know if a piece of tool steel connected to both positive and ground pole of a welder tend to heat up red hot.
If yes, at wich amperage?
There are some ...
3
votes
1answer
747 views
Actual amount of reinforcement gained by adding gusset to welded steel tube construction
This question bothers me for quite a while and is about bicycle frame construction, specifically a BMX frame and even more specifically it's front triangle.
It is a heavy duty frame by definition, and ...
1
vote
1answer
51 views
Is there any option other than a gas welder
I want to repair a dent in a piece of cast iron with brass. I want to fill the site with brass.
For some reason, I want to do it by myself. I can buy an instrument for this work in a limited budget(...
3
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5answers
2k views
Welding and risk of electric shock
I would like to learn to weld (stick welding) for my own purposes (mostly for small repairs and building simple metal constructions). So far I'm trying to educate myself by reading and watching ...
2
votes
2answers
104 views
Types of welding (Shaft)
I am currently working on a prototype wire winch. I encountered some difficulties when trying to join the shaft and the cable drum.
Indeed the joint must be a welding, so I presume no keys are needed.
...
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2answers
78 views
How does Electric arc welding compared to gas welding?
While focusing on Quality and strength of welded joints produced but both methods..
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2answers
40 views
Resistance spot welding multiple metal thinknesses
I have a question for all experienced in manufacturing of steel products;
Is it possible, and or workable to resistance spot weld dissimilar metal thicknesses together? for example, 1.5-2mm thick ...
2
votes
1answer
95 views
Plugging a 25A device (Welder) on 10A house plug
I would like to plug a 25A welder on a 10A house plug. I understand that it will not accept full power or the circuit breaker would switch.
However, my question is if I may run under some lower power ...
0
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1answer
186 views
Can I mig weld to my skateboard truck? How can I test if it's weldable?
I have this skateboard truck for my off-road skateboard. I want to mig weld a piece of aluminum to it to mount a motor. How would I test if it is something I can weld to with a MIG welder? I think it ...
0
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1answer
33 views
Steel surface welding with high-frequency current
High-frequency currents induce skin-effect resistance that is used on some applications to weld metals.
Assume you have two steel rectangles of dimension $h_0, w, l$ and $h_1, w, l$ placed together ...
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2answers
70 views
Pouring copper onto another copper block
When pouring copper onto another copper block and I want to have a good solid welding of the poured copper onto the block, do I need to use a flux? Or, if the block is freshly cleaned and free of most ...
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2answers
692 views
Advice on suitability of corner joints in welded frame
I'm designing a frame for supporting some agricultural equipment that will be composed of welded square hollow section members. The top of the frame will be a rectangle of SHS members, with four ...
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1answer
52 views
How is this aluminum heater mounted to the stainless plate?
I'm looking for a way to mount a 1000W electric heater to a stainless base. Electric kettle heaters could fit my requirements, but I'm wondering how the Aluminium heater is mounted to the stainless ...
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vote
2answers
567 views
Brazing Zinc-Aluminum Alloy to Steel
I have an electrical connector made of zinc-aluminum alloy (exact mixture unknown) that I would like to braze to a steel tube. Can this be done, what kind of material(s) would work for this ...
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3answers
5k views
What type is miter joint - Welding
Is miter joint in welding - butt joint or corner joint ?
My example includes 45 degrees miter (90 degrees) angle on two SHS (Square Hollow Sections) - 50x50x3 [mm] Working with EN/ISO norms regarding ...
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0answers
53 views
how to calculate the speed ratio (Rotational speed to advancing speed) in friction stir welding
I am a student and I work in the friction stir welding of a hardened aluminium alloy 7075-T6, and I want to confirm about this information before I put it in the article.
I found in the literature ...
4
votes
1answer
3k views
Strongest brazing materials for titanium?
What are the strongest brazing materials for titanium?
The main materials I would like to use would be copper or silver, in which case I would like to ask which would form a stronger bond with ...
3
votes
2answers
1k views
Strength of Welded Joints
When calculating the factor of safety for a fillet weld that is loaded in shear what should be the maximum allowable stress?
Some books suggest using the distortion energy (Ssy = 0.577Sy for the ...
3
votes
1answer
89 views
Aluminum for an Ejection Seat Replica
I love ejection seats and the flying contraptions they usually reside in. In fact, I like them so much that I want to make my own, despite my profound lack of training and inexperience with ...
6
votes
1answer
4k views
Schaeffler, De Long, and WRC welding diagrams - which steels can be used?
I am working on a simple program that would help welder to count how much ferrite, austenite etc. there is in weld. I am focusing on stainless steel.
I have decided to use 3 graphs: Schaeffler, De ...
2
votes
1answer
517 views
How to join 2 mm stainless steel welding rods without a TIG welder
I have to build an egg tray. The material used for such trays is 2 mm stainless steel welding rods.
When I queried nearby workshops they said a TIG welder is needed to weld such material and it is ...
8
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1answer
173 views
Weldability of Pure Tin
The site states that Tin cannot be welded, but after I made some research, I discovered that tin, when alloyed with copper or used as a protective coating for steel, can be welded.
My question is why ...
4
votes
2answers
841 views
Penetration depth and weld deposition rate in Welding
What factors affect the penetration depth and weld deposition rate in arc welding?
How does polarity affect the penetration depth and weld deposition rate?
My lecturer said that penetration depth is ...
9
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0answers
216 views
What type of ultrasonic transducer would be suitable for ultrasonic welding? [closed]
Project background:
I am working on a project where i need to weld plastic using ultrasonic transducers.
Problem:
Since I'm still learning engineering, I have a hard time figuring out what all the ...
