Everyone should have heard about the popular concept of 3D printing. Let me introduce you to the mainstream technology and process of 3D printing. I hope to help you understand the working principle and characteristics of 3D printing.
Now let's take a look at the mainstream process flow of 3D printing.
Fused deposition modeling (FDM)
FDM is probably the most widely used process at present. Many consumer 3D printers use this process because it is relatively easy to implement:
The FDM heating head heats the hot-melt material (ABS resin, nylon, wax, etc.) to a critical state to make it assume a semi-fluid state, then the heating head will move along the two-dimensional geometric trajectory determined by CAD under software control, and the nozzle will The semi-flowing material is extruded, and the material instantaneously solidifies to form a thin layer with a contour shape.
This process is very similar to the printing process of a two-dimensional printer, except that it is not the ink that comes out of the print head, but a melt of materials such as ABS resin. At the same time, the print head or base of the 3D printer can move in the vertical direction, so it can quickly accumulate materials layer by layer, and each layer is printed with a certain shape by the trajectory determined by the CAD model, so it can finally print out the designed Three-dimensional objects.
Stereolithography (SLA)
According to Wikipedia records, the first rapid prototyping equipment in 1984 used a light-curing three-dimensional modeling process. Among the current rapid prototyping equipment, SLA is the most in-depth research and the most widely used. We usually refer to this process as "photocuring" for short. The basis of this process is a photosensitive resin that can produce polymerization under ultraviolet light.
Like other 3D printing processes, SLA light curing equipment will slice the three-dimensional digital model of the object before starting to "print" the object. Then under the control of the computer, the UV laser will scan the liquid resin point by point along the layered cross-sectional contour of the part. The scanned thin layer of resin will produce polymerization reaction, and gradually form lines from the dots, and finally form a thin layer of the cured part of the part, while the unscanned resin remains in its original liquid state.
When the curing of one layer is completed, the lifting table moves a distance of the thickness of the layer, and the surface of the resin that has been cured is covered with a new layer of liquid resin for scanning and curing again. The newly cured layer is firmly bonded to the previous layer, and so on until the entire part prototype is completed.
The characteristics of the SLA process are that it can present higher precision and better surface quality, and can manufacture parts with particularly complex shapes (such as hollow parts) and particularly fine (such as crafts, jewelry, etc.).
Outdoor furniture refers to furniture used for outdoor environment, mainly used for outdoor leisure, entertainment and dining activities. The classification of outdoor furniture can be divided according to the material, function and shape.
First, classification by material
1. Wooden outdoor furniture: Wooden outdoor furniture is usually made of natural wood, such as teak. Wooden furniture has a natural, rustic character and is suitable for outdoor Spaces such as gardens, terraces and courtyards.
2. Metal outdoor furniture: Metal outdoor furniture is usually made of iron, aluminum, stainless steel and other metal materials. Metal furniture has the characteristics of durability and stability, suitable for long-term use in outdoor environment.
3. Cloth outdoor furniture: Cloth outdoor furniture is usually made of waterproof, sun protection and other special treatment of fabric. Fabric furniture with soft, comfortable characteristics, suitable for use in outdoor leisure areas.
Second, Classification by function
1. Leisure Chair: Leisure chair is the most common kind of outdoor furniture, usually used for outdoor leisure, sunbathing and other activities. There are a variety of leisure chairs, folding chairs, recliners, rocking chairs and so on.
2. Dining Table And Chair: Dining table and chair are mainly used for outdoor dining, usually consisting of a table and several chairs. Dining tables and chairs of various styles, there are round tables, square tables, etc., suitable for different venues and the number of people dining needs.
3. Parasol: Parasol is used for outdoor shading, which can effectively block direct sunlight and provide a cool resting environment. There are various styles of sunshade umbrellas, including ordinary umbrellas, large umbrellas, and rotating umbrellas.
Third, Classification by shape
1. Chairs: including ordinary chairs, rocking chairs, recliners, etc., suitable for outdoor leisure and sun.
2. Table category: including dining table, coffee table, side table, etc., suitable for outdoor dining and placing items.
3. Sofa category: including single sofa, double sofa, combination sofa, etc., suitable for outdoor leisure and parties.
4. Reclining chairs: including hammocks, reclining chairs, etc., suitable for outdoor naps and rest.
5. Queue class: including benches, benches, etc., suitable for outdoor queuing and waiting.
In summary, the classification of outdoor furniture can be divided according to material, function and shape. Different outdoor furniture is suitable for different outdoor environment and activity needs, choose suitable outdoor furniture can provide comfortable and convenient outdoor life experience.
Outdoor Table,Rattan Table,Rattan Chair,Beach Furniture
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.zhhotelfurniture.com