Lightweight titanium fitting for high-performance braking system and preparation method thereof
A braking system and high-performance technology, applied in braking parts, improving energy efficiency, and manufacturing tools, etc., can solve the problems of high cost of titanium raw materials, failure of parts and sudden increase in shear force, etc., and achieve obvious optimization effects. The effect of rapid heat dissipation and strength performance improvement
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[0075] Its preparation method comprises the following steps:
[0076]According to the design structure, 3D printing is used to print directly, and the finished product is prepared through subsequent processes. The subsequent process is a common process for fiber 3D printing.
[0077] or
[0078] Semi-finished products or finished products are prepared by forging + machining;
[0079] or
[0080] Casting is used to obtain finished or semi-finished products.
[0081] After the above-mentioned steps are completed, the titanium joint head is subjected to surface strengthening and anodic oxidation treatment to obtain the final product.
[0082] As a preferred option. The process of 3D printing and manufacturing joints is as follows: using pre-alloyed titanium alloy powders, using laser beams, electron beams, plasma or ion beams as heat sources, heating titanium alloy powders, and preparing optimally designed titanium alloy joints. The main process steps are: CAD modeling, lay...
Embodiment 1
[0092] Using Ti-6Al-4V alloy powder as raw material; according to figure 2 , 3 The designed structure is prepared by additive manufacturing process;
[0093] Additive manufacturing process parameters are: Raw material powder: Ti-6Al-4V alloy powder, 3D printing single-layer powder coating thickness is 50μm, laser power is 160W, scanning speed is 1000mm / s, scanning distance: 80μm, powder coating thickness 0.02mm.
[0094] Compared with steel fittings, the weight reduction rate of titanium fittings is nearly 35%, and the strength performance is improved by 20%. The optimization effect is quite obvious. Compared with the Ti-6Al-4V joint without the hollow structure, its mechanical properties are equivalent, but the weight reduction reaches 18%.
Embodiment 2
[0096] Using Ti-3Al-5Mo-4.5V as raw material; according to figure 2 , 3 The designed structure is prepared by investment casting process;
[0097] Through the investment casting process, the main process steps are: making investment molds, degreasing and degreasing the modules, coating and sanding the modules, drying and hardening the mold shells, dewaxing, roasting the mold shells, and finally pouring .
[0098] After the casting is cooled, it is die forged at 800°C to obtain a die forging, and finally it is mechanically finished and anodized to obtain a finished titanium alloy joint.
[0099] The present invention has also tried other optimization schemes, but the obtained results are either not obvious in weight loss, or the mechanical properties are not up to standard, especially when running at high speed, under the condition of rapid braking, the life of the sample is far lower than that of the present invention. , which was confirmed by bench samples.
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