Normally, we are all familiar with heat welding and see that almost all welders use heat to join two metal components. Heat is considered the main component in welding. Then, what is cold welding? How can we join two metal components without melting or heating them? I know there are a lot of questions in your mind. In this article, we are going to discuss all about cold welding that you need to know. Let’s scroll down and read this article to get a clear understanding of cold welding. In this article, we have also covered the benefits and applications of cold welding
What is the Phenomenon of Cold Welding?
To understand cold welding, it is vital to know that there is an oxide layer on every metal component. That oxide layer prevents metallic atoms from connecting and making a bond with each other. If this layer is removed then the components make a bond and then attached to each other.
Cold welding is considered solid-state welding in which we fix two metallic components with almost no or minimum heat. In this welding, we do not heat or liquefy any material. In cold welding, we only use energy in the form of pressure to join two metals.
If you take some flat metal pieces and rubbed them, nothing happened because of the oxide layer. But when you properly clean all the parts and combine it under vacuum, they’ll surely get stuck with each other as the oxide layer will be removed. This is how cold welding happens.
Is Cold Welding Reliable?
Cold welding is as reliable as casual heat welding. If you follow all the steps, requirements and procedures then cold welding would be best for you. Make sure that cold welding is only good for plan and oxide metal. So, do not use cold welding for carbonate content and non-ductile brittle metal materials.
In this current era, cold welding is mostly used to make butt and lap joints, Nano-scale and TIG cold welding. Butt joints are preferable to welding aluminum. In butt joint cold welding, you don’t have to clean the surface. You can easily break up the additional layer by pressure or any cold welding machine. In this way, it is less complicated and turns out to be a time savior.
Moreover, lap joint cold welding needs proper cleanness because the metal cannot get stuck without cleaning. It takes extra care and effort. After that, you can easily break the oxide layer and do cold welding with your lap joint method.
Benefits of Cold Welding
There are many benefits of cold welding. But here we only discuss some advantages of cold welding.
- It is good for aluminum, silver, nickel and copper wire as other ways might be difficult.
- The bonds made by cold welding do not need intermetallic compounds and are highly strong and last longer.
- It doesn’t have any heat-related work that reduces mechanical change and negative results.
- It has the ability to join and fix dissimilar materials.
- Cold welding is not expensive to start up and works fast.
- This cold welding is really conventional and welded in a solid state.
How to Learn Cold Welding?
It is obviously hard for a newbie to learn cold welding. But for an experienced welder, it’s not difficult to learn and do cold welding because he knows the basics of welding. A cold welder needs to learn the right way to clean metal components and the best way to break them down. The cleaning part is quite hard because you need to remember many important things.
For heat welders, cold welding will be quite easier as they don’t have to learn and follow multiple kinds of things including arc, and lasers. Also, you don’t have to deal with heat, welding uniform, helmets etc. the only thing you wear for safety is a pressure safety helmet. Cold welding is the simplest but most expensive type of welding. It is simplest because no arrangement is required to make a start-up. But the machines and materials of cold welding are expensive and it’s difficult to manage a working environment with high production.
Cold welding is a time-consuming learning process. In cold welding, once you have done with welding but unfortunately the metal pieces do not stick then it is very hard to reform or refix it. Therefore, it’s vital for a cold welder to practice it before starting a career as a cold welder. Also, keep in mind that cold welding is highly suitable for non-ferrous metal materials.
Applications of Cold Welding
Cold welding is frequently used in the manufacturing of aluminum, copper, silver, and platinum wires with 0.5 to 12mm.
- It is also used for butt joints and works as a time savior.
- The pressure technique used in cold welding is beneficial for sealing containers that cannot be done by heating.
- It is somehow beneficial in the electronic industry to make heat-sensitive devices.
- Cold welding is environmentally friendly and suitable for underground wiring.
- Aircraft, automotive, space crafts, scientists and advanced fabrication use cold welding for various purposes.
Cold Welder Need any Safety Equipment?
Safety should be your priority in all kinds of work. But when it comes to welding, the importance of safety increases more. Because welding is a complex job that demands focus and protection. Whether you are a cold welder make sure to save yourself in every possible way. A cold welder doesn’t have to wear thick and high-quality welding gloves and other safety gear. You just have to wear a pressure-controlling helmet or protective glasses along with gloves. That will be enough for the safety of cold welders.
What is Cold Welding (Conclusion)
That’s all about the topic what is cold welding. I hope now you are well aware of cold welding, its benefits and applications. We discussed different aspects of cold welding, its benefits, uses and safety requirements. We have also discussed how cold welding works and for what materials it is suitable. If you are thinking of becoming a cold welder then this article will surely help you to increase your knowledge and help you to understand all about cold welding.
The only limitation we found about cold welding is that it required a flat and smooth surface. It doesn’t work well on irregular and ferrous metals. These are the few limitations why cold welding is not used in some industries. Moreover, cold welding is suitable for both genders. If you are a girl and want to be a cold welder then go on and start learning as there is no restriction. Many females have already introduced themselves as professional welders and are working in the industry.
I hope now you have a clear understanding of what is cold welding and the career of cold welders. You are ready to get into the cold welding industry. Don’t wait more, go and start learning cold welding and make your own rank in the industry.