A superhydrophobic structure with droplet-guiding capability includes: a substrate having a surface and front and rear sides; and a plurality of oblique cones exhibiting superhydrophobic properties and protruding frontwardly and obliquely from the surface in an inclined direction inclined to the surface, so that liquid droplets are guided by the oblique cones to move therealong when the liquid droplets move frontwardly from the rear side toward the front side and so that the liquid droplets move against the oblique cones when the liquid droplets move rearwardly from the front side toward the rear side. A method of making the superhydrophobic structure is also disclosed.

The present invention relates to a method of manufacturing a metal mold for replicating a component having a predetermined three-dimensional shape, the manufacturing method comprising: (a) fabricating a glass-based mold by using a moldable nanocomposite comprising an organic binder and glass particles dispersed therein, the glass-based mold having the predetermined three-dimensional shape; and (b) replicating the glass-based mold obtained in step (a) by melting a metal inside the glass-based mold or by melting a metal outside the glass-based mold and pouring it onto or into the glass-based mold, followed by cooling, or by pressing the glass-based mold into a malleable metal substrate, thereby obtaining the metal mold for replicating the component, the metal mold having the predetermined three-dimensional shape inverted. Further, the present invention relates to a method of replicating a component having a predetermined three-dimensional shape, wherein the metal mold obtained by the manufacturing method is used for replicating the component, wherein the glass particles of the moldable nanocomposite comprise a first type of glass particles having a diameter in the range from 5 nm to 500 nm.

The present invention provides a metal material and use thereof in preparing a metal model. The metal material comprises the following ingredients in percentage by weight: C0.06%, Si1.00%, 1.00%Mn4.00%, P0.045%, S0.005%, 20.00%Cr22.00%, 8.50%Ni10.50%, 1.00%Mos2.50%, 1.00%Cu3.50%, 0.20%N0.30%, with the balance being Fe; the pitting resistance equivalent number (PREN) of the metal material is calculated according to the formula: PREN=Cr %+3.3M0%+16N %, and the result is PREN30.0%

The present disclosure belongs to the technical field of additive manufacturing (AM), and specifically relates to an AM method based on modular precision mold units. The method includes: slicing a digital model of a target three-dimensional (3D) component; manufacturing separated mold unit blanks, each including a sacrificial material pattern layer and an encapsulating mold material layer; performing precision machining; forming an integrated combined mold through stacking; removing a sacrificial material to form a cavity; injecting a material; and removing a mold after curing of the material to obtain a target component. Alternatively, the method includes: acquiring a model slice; manufacturing temporary mold units, each including a negative pattern; directly filling a final component material; performing precision machining; stacking; implementing curing and connection to form an integrated whole; and removing a temporary mold to obtain a target component. The method of the present disclosure eliminates error accumulation through modular precision machining, enabling low-cost and efficient manufacturing of large-sized, high-precision, and complex structural components.