Forming system and method for dissimilar metal composite structure

Abstract

The invention belongs to the field of dissimilar metal bonding / connection, and discloses a heterogeneous metal composite structure forming system and method, including a droplet drive module, a smelting module, a support element, a TIG heat source module, a host computer and a three-dimensional platform movement module; droplet drive Both the module and the smelting module are supported above the three-dimensional platform movement module by supporting elements. One end of the droplet drive module extends into the support element and connects with the melting module. The TIG heat source module is fixed above the three-dimensional platform movement module at a preset angle, and the droplet drive module The module, smelting module and three-dimensional platform movement module are all connected to the host computer; the host computer is used to control the smelting module to melt the first metal material at a preset temperature, and the droplet driving module sprays the first metal material smelted with preset driving parameters and waveforms , the three-dimensional platform movement module drives the second metal material arranged on the surface to move along a preset path. The system and method can realize direct compounding of dissimilar metals, and have low cost and high efficiency.

Description

technical field [0001] The invention belongs to the field of combination / connection of dissimilar metals, and relates to a forming system and method for a composite structure of dissimilar metals. Background technique [0002] With the rapid development of science and technology and the special needs of some special fields, the demand for new materials and new processes in engineering applications is gradually increasing, and the performance of single metal materials is gradually difficult to meet the needs. Even if it is applicable, it is often restricted by factors such as material cost. . The dissimilar metal composite structure composed of different kinds of metal materials can learn from each other and give full play to the advantages of each material, so it is widely used. [0003] Dissimilar metal materials refer to materials that are completely different in terms of chemical composition, metallographic structure, and performance. The joint connection of dissimilar m...

AI Technical Summary

Problems solved by technology

Traditional dissimilar metal bonding / connection methods such as explosive welding, friction welding, and ultrasonic welding cannot be directly applied to its complex space surface structure, and the substrate cannot be uniformly preheated, and the time period is generally long

The metal material gradient structure additive manufacturing technology that has emerged in recent years mainly includes electron beam additive and laser cladding. They cannot solve the problem of huge differences in melting points between dissimilar metals, and generally require special powder or wire, and the material utilization rate is low.

For the 45 steel / tin-lead alloy composite structure, the traditional bonding method is the adhesive process, but the adhesive composite structure has problems such as easy aging, poor environmental adaptability, and poor long-term stability, and cannot achieve reliable connection of the composite structure, which affects its use. life

Images