Welding technology and application of large inlaid-block edge trimming die
Edge trimming is a very important operation in the manufacturing process of stamping parts. Large inlaid-block edge trimming die is a new type of die, which has the advantages of high tool stiffness, high dynamic stability, fast assembly and disassembly, convenient maintenance, etc. Compared with traditional edge trimming dies, it can realize multi-position punching, which is of great help to improve production efficiency and product quality. Therefore, the application of large inlaid-block edge trimming die is increasing.
The main reason for the successful application of large inlaid block edge trimming die is the improvement of welding technology. In order to ensure the quality and accuracy of the large inlaid block edge trimming die, welding technology is the key technology. Common welding methods for small and medium inlaid block edge trimming die are welding, butt welding, semi-air welding and full-air welding.
The quality of welded parts directly affects the service life and processing accuracy of the die. Due to the complex shape and high position accuracy of large inlaid block edge trimming die, the traditional welding method can not meet the welding requirements. Therefore, the stack welding process has been developed.
The stack welding process is to stack the welded parts in correct position, and then solidification is completed by radiating heat. The principle of stack welding is to achieve a uniform surface temperature, so that the whole and each component of the parts are completely welded.
The stack welding technique can be divided into two kinds: air stack welding and non-air stack welding. The air stack method is divided into two kinds: half-air stack welding and full-air stack welding. The non-air stack method has several kinds, such as non-air tack welding, cold welding, etc.
Non-air stack welding has the advantages of simple process and convenient equipment. During the welding process, the welding rod is pressed against the surface of the parts and then heated by an induction current to form a joint.
Half-air stack welding is more suitable for the welding of large inlaid block edge trimming die. It uses the convection effect of air movement to keep the part surface temperature uniform, so that the joint of each component can be achieved.
Full-air stack welding is a dry air stack welding method which uses air flow as heat source and uses heat media to pass on welding heat. The welding heat is conducted to each component by natural convection in atmospheric pressure and atmospheric temperature.
By adopting the appropriate welding process for the welding of large inlaid block edge trimming die, the quality of the large inlaid block edge trimming die can be ensured and its application range can be expanded. It can realize multi-position trimming, greatly improving the production efficiency and product quality.
In summary, for large inlaid-block edge trimming die, both air stack welding and non-air stack welding are suitable welding methods. Different welding methods should be adopted according to the shape and number of welding parts, so as to ensure the accuracy and quality of the large inlaid-block edge trimming die.
