The concept of sheet metal bonding processing
Besides sheet metal processing methods such as laser cutting, folding bending, Tubular Diffusion Bonding is also one of the important operations. In essence, metal bonding is a method to help connect two or more metal parts together into an inseparable block.
When bonding, the connection area will be heated until it melts or turns into a plastic state, then pressure or no pressure is common to join the sticky parts together.
Features of Tubular Diffusion Bonding processing
In the above section is the concept of metal bonding processing, through this section readers also understand more about sheet metal bonding methods. Currently, Tubular Diffusion Bonding method is very popular. We use it in different industries, bonding method has some characteristic features as follows:
Save a lot of metal
Bonding is considered as one of the methods to help reduce the amount of metal significantly. Compared with other metal processing methods such as riveting or bolting, metal bonding saves up to 10 to 25% of metal, especially compared to the casting method, which saves up to 50% of metal. metal.
Bonding many types of metals together
for bonding, you can completely connect many types of metals such as ferrous and ferrous metals, such as metals with non-metals…
Easy to create machine parts with complex structure:
With Tubular Diffusion Bonding, this operation can create most parts with different levels of complexity that other methods cannot do or are very difficult to implement. With bonding, you just need to gather the parts together, attach them and you're done, no need to create a mold beforehand.
High weld strength, tight welds
Thanks to the development of technology, metal bonding has been greatly improved, the welds have higher durability and are much stronger than before. It is easy to see that thanks to many of the above outstanding features, this bonding method is extremely widely common in many different industries.
In the manufacturing industries, truss frames in construction, or all kinds of vessels. industrial storage. Currently, bonding methods no longer stop at Tubular Diffusion Bonding but also with the appearance of many modern bonding machine tools. This plays an important role in supporting the welder a lot.
Classification of bonding methods according to bonding state
Based on the state of the welds when heated, bonding is classified into 3 main methods: fusion bonding, heat bonding, and pressure bonding.
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- Classification of metal bonding processing methods
- Currently, based on many criteria, metal bonding processing is divided into the following types:
– Melt bonding: when bonding, the metal part at the bonding edge and the additional metal heats to a molten state, then the molten metal will blend to fill the gap between the bonding parts. create a weld. Melt bonding comes into bonding types such as arc bonding, slag bonding, gas bonding, electron beam bonding, laser bonding, plasma bonding, etc.
Classification of Tubular Diffusion Bonding
Pressure Tubular Diffusion Bonding is a bonding method in which the metal to be welded is heated to a plastic state (different from the molten bonding method, which is heated to the molten state), then the two parts are pressed together. thanks to the large enough pressure to form welds.
Pressure bonding includes contact bonding, friction bonding, explosive bonding, ultrasonic bonding, gas bonding, high-frequency bonding, diffusion bonding. Furthermore, Heat bonding is a method of using heat generated from heat-generating chemical reactions. It is to heat the weld metal to a molten state combined with pressure to force two parts together to form a weld...
How do we classify these methods ?
For this classification method, Tubular Diffusion Bonding comes into methods such as:
- electric bonding,
- chemical bonding,
- Mechanical bonding.
Electric bonding: This is a bonding method that uses electricity to convert into heat to provide heat for metal heating. Electric bonding methods is easy to mentionas arc bonding, contact bonding ...
What is chemical bonding?
Chemical bonding is a method of using chemical energy to convert it into heat. It is to provide for the metal bonding process. Chemical bonding includes gas bonding, aluminum heat bonding.
Furthermore, Mechanical bonding is a bonding method that uses mechanical energy to convert into heat to plasticize the bonding position such as friction bonding, cold bonding, explosive bonding, etc.
Classification of bonding methods by degree of automation
Manual bonding: The Tubular Diffusion Bonding method does not use machines. All operations in the bonding process comes entirely by the welder. This method will not require investment in equipment, but the quality of the weld will largely depend on the skill of the worker.
Semi-automatic bonding: is a bonding method that uses both machines and the participation of the welder.
Automatic bonding: This method uses professional bonding machines and equipment. With this method, it will have to invest in initial machinery and equipment with high cost. On the contrary, the performance is quite large, the welds are of good quality, meeting the production of large orders.
In general, each bonding method will have different characteristics. This depends on the metal part as well as the requirements that will use different methods. Readers can refer to the classification of sheet metal bonding processing methods, advantages and disadvantages of metal bonding here.
The role of the semi-automatic Tubular Diffusion Bonding technique
- Notes to pay attention to when processing metal bonding
- Learn metal arc bonding techniques – Other metal bonding processing methods
- Exploring laser cutting and sheet metal forming – Metal laser cutting pros and cons
Advantages of sheet metal bonding
As mentioned in the characteristics section, metal bonding has many outstanding advantages as follows:
- Save metal: Metal bonding saves a lot of metal,
- Bonding can create a lighter and easier detailed structure, the bearing capacity of the metal part after bonding is also higher.
- The bonding method helps to reduce the time as well as the cost of frames, trusses, beams… common in construction.
- Metal parts after bonding have quite high strength, the tightness of the weld is large.
- Bonding equipment is quite simple, the investment cost of machines is not too large.
- Bonding is easy to apply to the same metal or metals with different properties, metal to non-metal …
Disadvantages of sheet metal bonding
Besides the above advantages, Tubular Diffusion Bonding also has some disadvantages as follows, you should note:
Welded metal parts are easily deformed and warped after bonding because there is large thermal stress in the welded structure.
The metal organizations near the weld are brittle, so the welded structure has poor impulse resistance
Conclusion
Tubular Diffusion Bonding system is vital to understand this proedure. The difficulty of powder processing of THA originates from the weak strength of the green compact and the high weight of the THA powders.
