With the increasing demand for 3D printing metal, magic monkey feels that it is urgent to popularize the design of metal 3D printing. There are still some misunderstandings about Metal 3D printing. Before introducing the design rules of metal 3D printing powder, there is another problem that needs to be clarified with you. When talking about the production of Metal 3D printing, it is not to replace the production of existing parts, This is one of the most common misunderstandings of the public. In the production of existing parts, it can be said that metal 3D printing is not dominant in most cases; Whether it's machining, casting, sheet metal and welding, the traditional technology is very mature. For the traditional parts that can be multiplied by the traditional technology, whether it's cost or efficiency, metal 3D printing is not dominant

Metal 3D printing powder is to achieve the purpose of comprehensive cost reduction through metal 3D printing design. Through metal 3D printing to achieve four goals: reduce the number of parts;   Reduce weight; Reduce assembly time; In order to reduce the comprehensive cost, the "three minus one high" is used to make high complex parts;  

Specific requirements for metal 3D printing:

  1. Minimum detail feature

The minimum detail feature is not less than 0.15mm, that is to say, the feature and detail less than 0.15mm may be ignored. For example, for a 0.1 slot, although the minimum light spot can be less than 0.15mm, because the details are characteristic, the features may be ignored;

2. Minimum wall thickness

The minimum wall thickness can reach 0.2mm, but it is recommended not to be less than 0.5mm. The minimum wall thickness is also related to the structure of the article and the ratio of the height to the wall thickness of the article. Generally speaking, the ratio should not exceed 40, which may lead to deformation;

3. Surface finish

The roughness and smoothness of the surface are related to three factors

A. Printing materials;

B. Construction parameters;

C. Placement direction of parts;

  In different printing conditions, the surface roughness, equipment, shape, placement, etc. all have an impact on the surface. Generally speaking, the vertical surface is better than the inclined surface, and the inclined upper surface is better than the lower surface.

  4. Bridge structure

The allowable distance of bridge structure is about 2mm, which is relatively small.

5. Other design skills

Metal 3D printing is very suitable for printing grid like structures. These grid like structures are very suitable for internal support, which can reduce weight and retain strength;

It is necessary to consider the removal of support and powder after printing. The entrance of support and powder removal should be reserved. The support should not be permanently sealed inside after printing.

In conclusion, metal 3D printing opens up new design options, liberates the freedom of design, and makes more designs possible to become reality. However, metal 3D printing powder will not replace the traditional manufacturing method, each has its own advantages and complement each other. Understanding the specifications of metal 3D printing can maximize the benefits of metal 3D printing