Titanium-clad copper rod manufacturing process
The titanium-clad copper rod manufacturing process is an advanced technology that combines the advantages of both by coating titanium alloy on the surface of copper-based materials. This process can effectively improve the corrosion resistance, high temperature resistance and mechanical properties of copper, and is widely used in aerospace, electronics, chemical industry and other fields.
Hot extrusion method
The hot extrusion method is an earlier titanium-clad copper rod manufacturing process. This method uses a large-diameter thick-walled titanium tube billet, installs a round copper rod inside, seals both ends with titanium plates, and then hot extrudes. However, there is a problem with this method, that is, there may be gas in the gap between the copper billet and the titanium tube at high temperature, which affects the fit of the composite rod.
Hot extrusion stretching method (hot extrusion + cold drawing/cold stretching method)
The hot extrusion stretching method is an improvement on the hot extrusion method. This method uses vacuum casting technology to form a metallurgical bond between titanium and copper, thereby improving the fit and composite quality. However, hot-processed products may have problems with poor bending resistance and rough surface. In order to improve these problems, the rod can be subjected to an appropriate amount of cold stretching after extrusion. The titanium-clad copper rods produced by this process have improved bending resistance and surface roughness, and the user feedback is good.
Explosive composite method and explosive composite hot rolling method
Explosive composite method:
In the 1980s, the explosive composite method was used to produce titanium-clad copper rods, but due to its low efficiency and high cost, it did not form production capacity.
This method uses the huge energy generated by the explosion to tightly combine titanium and copper.
Explosive composite hot rolling method:
The explosive composite hot rolling method is an improvement on the explosive composite method. It uses larger titanium tubes and copper rods, first makes billets by the explosion method, and then uses the pass rolling method to produce finished composite rods.
Compared with the direct explosion method, the explosive composite hot rolling method can improve efficiency, reduce costs, and the composite strength and other indicators of the composite rods produced are also better.
However, since the rolling processing volume should not be too large, that is, the elongation coefficient is not large, it is not suitable for mass production. At the same time, for rectangular composite rods, the corners are not easy to fill, and the deformation of the pass is not well controlled, which may cause folding or ears.
Advantages of the titanium-clad copper rod manufacturing process
Improve corrosion resistance
Titanium itself has extremely strong corrosion resistance and can remain stable in many strong acid and alkali environments. Coating titanium on the surface of copper can greatly improve the durability of copper in harsh environments and extend its service life. Especially in the fields of chemical industry and marine engineering, titanium-clad copper rod materials perform well.
Enhance mechanical properties
The strength of titanium is much higher than that of copper, and it has good tensile strength and compressive strength. Therefore, the mechanical properties of titanium-clad copper rod materials have been significantly improved, making them more suitable for high-intensity working environments, especially in high-precision fields such as aerospace.
Excellent high-temperature stability
Although copper has strong thermal conductivity, it easily loses strength at high temperatures. Titanium alloys have a higher melting point and strong high-temperature stability. Titanium-clad copper rod materials can still maintain good performance in high-temperature environments, and are particularly suitable for high-temperature working conditions such as heat exchangers and engine parts.
Maintain good electrical and thermal conductivity
Although the electrical and thermal conductivity of titanium are not as good as those of copper, the design of the coating layer of titanium-clad copper rod materials ensures that the electrical and thermal conductivity of copper are maximized. This enables titanium-clad copper rods to have both corrosion resistance and excellent electrical conductivity in industries such as electricity and electronics.
The titanium-clad copper rod manufacturing process creates a new type of composite material by combining the corrosion resistance and high strength of titanium with the electrical conductivity and thermal conductivity of copper. In various high-demand industries, titanium-clad copper rod materials have shown broad application prospects due to their unique performance advantages.
