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[**] brief introduction to the most common 10 kinds of CNC rapid prototype materials
Date: 2022-08-26
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[**] brief introduction to the most common 10 kinds of CNC rapid prototype materials

Compared with 3D printing, the biggest advantage of CNC rapid prototype is the richness and practicality of materials. The main purpose of the prototype is to verify the feasibility of product design, so the material of the prototype is also very particular. The products of each enterprise are different, and the prototype models that need to be made are also different, so the production materials may also be different, but the main processing materials include the following:

1. [**]BS: It is widely used in general product shells, with good welding strength, and can be applied to surface metallization projects, such as water electroplating, vacuum evaporation electroplating, and material specifications include plates, round bars, etc. [**]BS is divided into ordinary grades and fireproof grades, which are basically the same as the performance of plastic injection, so it is the most widely used in the prototype industry;

2. PC: It is a material with good strength, toughness and transparency, which is suitable for the production of Lens and fine structure parts. In addition, glass fiber is added to improve the rigidity and heat resistance of the plate, which can be used to make parts that need to maintain high rigidity in a high temperature environment. PC also has UL94-V0 fire rating;

3. PMM[**]: [**]crylic, or plexiglass. It is a good transparent part, and the material with the best transparency can be applied to dyeing, electroplating, spraying, screen printing and other methods. The welding strength is acceptable, but brittleness is its weakness, which is not suitable for use in fragile parts such as hooks;

4. PP: translucent material, good impact resistance, excellent flexibility, can be applied to production requirements with strict impact resistance conditions, such as: automotive supplies, foldable packaging boxes, etc.;

5. P[**]66+GF30: P[**]66+GF30 is not a model, it is a general code for P[**]66 plastic material plus 30% glass fiber. High strength, special thermal stability, hydrolysis resistance, suitable for auto parts, mechanical parts, etc. Guards for mechanical parts that require high rigidity and dimensional stability. Red phosphorus flame retardant has long-term stability and excellent mechanical properties;

6. POM: Chinese called polymethyl methine raw material, also known as polyoxymethylene raw material. In the prototyping industry, it is often called Saigang. The regular molecular structure and crystallinity make it very excellent in physical and mechanical properties, and it is called metal plastic. It is suitable for high-strength workpieces in the prototype model, such as gears, shafts, brackets, etc.;

7. Teflon: The chemical name is polytetrafluoroethylene (Poly tetra fluoroethylene, abbreviated as PTFE), generally called "non-stick coating" or "easy-to-clean material". This material has the characteristics of acid and alkali resistance, resistance to various organic solvents, and is almost insoluble in all solvents. [**]t the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can be used for lubrication, and it has also become an ideal coating for easy cleaning of the inner layer of water pipes;

8. [**]luminum alloy: [**]luminum alloy is the most widely used type of non-ferrous metal structural material in prototype models, and has been widely used in aviation, aerospace, automotive, medical, and ship prototype models. [**]t present, aluminum alloys are the most widely used alloys in prototypes. The advantages are that they are easy to form, have good rigidity, and are rich in anode coloring;

9. Magnesium alloy: light in weight and good in strength, it is the preferred material for consumer 3C. The disadvantage is that magnesium is a flammable metal, environmental control during machining is very important, the risk of model making is high, and there are many machining projects after die-casting during production, which is a high-cost applied material;

10. Brass: Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is a variety of alloys composed of two or more elements, it is called special yellow copper. Brass has strong wear resistance. Brass is often used to replace stainless steel and other materials that are difficult to engrave and mill in prototype models. [**]fter polishing and electroplating, the surface effect and feel are very close to stainless steel materials.

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