The development trend of industrial aluminum profile welding is introduced!

1.Improving welding productivity is an important driving force to promote the development of welding technology

There are two ways to improve productivity:first,improve the welding deposition rate,such as three wire submerged arc welding,the process parameters are 220A/33V,1400A40V,1100A45V.The groove section is small,the baffle or gasket is set behind it,the steel plate of 50~60mm can be welded through once,the welding speed can be reached,more than 0.4m/min,and the deposition rate is more than 100 times compared with the electrode arc welding.Two,reduce the groove section and metal deposition,and the outstanding achievement is narrow gap welding.Narrow gap welding using gas shielded welding as the basis,the use of single wire,double wire,three wire welding,no matter how the joint thickness,can be used in the butt form,such as steel plate thickness of 50~300mm,the gap can be designed for about 13mm,so the amount of deposited metal is several times,tens of times to reduce,thus greatly improving productivity.The key technology of narrow gap welding is how to ensure the penetration of both sides and the arc center automatically tracking and located on the groove center line.Therefore,many different schemes have been developed around the world,and many narrow gap welding methods have appeared.

Electron beam welding,plasma welding,laser welding,can use butt joint,and do not need to groove,so it is more ideal between narrow gap welding method,which is one of the reasons it is widely paid attention to.

The newly developed laser arc composite welding method can improve the welding speed,such as 5mm steel plate or aluminum plate,the welding speed can reach 2~3m/min,obtain good forming and quality,welding deformation is small.

2.Improving the mechanization and automation level of the preparation workshop is the key development direction of the current advanced industrial countries in the world.

In order to improve the production efficiency and quality of the welding structure,there are certain limitations only from the welding process,so the world pays special attention to the technical transformation of the workshop.The main processes of the preparation workshop include material transportation,material surface deoiling,sandblasting,and protective paint;Steel plate marking,cutting,beveling;Component assembly and fixing.The above processes have been adopted mechanization and automation in modern factories.Its advantage is not only to improve the productivity of the product,but more importantly to improve the quality of the product.

3.Automatic and intelligent welding process is an important direction to improve the stability of welding quality and solve bad working conditions.

4,the development of new industries continue to promote the progress of welding technology.

Since the invention of welding technology has a history of more than 100 years,it can almost meet the needs of all the important products in the current industry manufacturing.But the development of new industries is still forcing welding technology forward.The development of microelectronic industry promotes the development of micro-connection technology and equipment.For example,the development of ceramic materials and composite materials promotes vacuum brazing and vacuum diffusion welding.The development of aerospace technology will also promote the development of space welding technology.

5.The research and development of heat source is the fundamental driving force to promote the development of welding process.

Welding process using almost everything in the world can take advantage of the heat source,including flame,arc,resistance,ultrasonic,friction,plasma,electron beam,laser,microwave,etc.(we are mainly composed of arc welding,resistance welding automation welding equipment),in the history of the emergence of each heat source is accompanied by the emergence of new welding technology.However,up to now,the development and research of welding heat source has not stopped.

6.Energy-saving technology is a common concern

As we all know,welding consumes a lot of energy.Take arc welding for example,each set is about 10KVA,submerged arc welding machine is 90KVA,and resistance welding machine can be up to thousands of KVA.Many new technologies appear in order to achieve this energy saving goal.In resistance spot welding,using the development of electronic technology,changing AC spot welding machine into secondary rectifier spot welding machine,can improve the power factor of welding machine,reduce the capacity of welding machine,1000kVA spot welding machine can be reduced to 200kVA,and still can achieve the same welding effect.The emergence of inverter welding machine is another successful example,it can reduce the weight of the welding machine,improve the control performance of the power factor of the welding machine,has been widely used in production.

Keyword:Industrial aluminum profile

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