Typical Rapid Prototyping Process Comparison

1. Light curing molding SLA

(1) Advantages

1) Fast forming speed, high degree of automation and high dimensional accuracy;

2) can form any complicated shape;

3) The utilization rate of materials is close to 100%;

4) The molded part has high strength.

(2) Disadvantages

1) A support structure is required;

2) Physical and chemical changes occur in the molding process, which are easy to warp and deform;

3) The raw materials are polluted;

4) Curing treatment is required and it is inconvenient to carry out.

(3) Application fields

Complex, high-precision, fine-grained pieces for artistic use.

(4) Common materials

Thermosetting photosensitive resin.

2. Layered entity manufacturing LOM

(1) Advantages

1) no post curing treatment is required;

2) no support structure is required;

3) Raw materials are cheap and low in cost.

(2) Disadvantages

1) It is not suitable for thin wall prototypes;

2) The surface is rough and needs to be polished after molding;

3) easy to absorb moisture expansion;

4) The workpiece strength is poor and lacks elasticity;

5) Material waste is large, and it is difficult to clean up the waste.

(3) Application fields

Entity is large.

(4) Common materials

Paper, metal foil, plastic film, etc.

3. Selective laser sintering SLS

(1) Advantages

1) The manufacturing process is simple and the flexibility is high;

2) a wide range of materials;

3) The material is cheap and the cost is low;

4) High material utilization rate and fast forming speed.

(2) Disadvantages

1) The strength and precision of the molded parts are poor;

2) high energy consumption;

3) The post-processing process is complicated and the deformation of the sample is large.

(3) Application fields

Casting design.

(4) Common materials

Paraffin, plastic, metal, ceramic powder, etc.

4. Fused deposition molding FDM

(1) Advantages

1) There are many types of molding materials, and the strength of molded parts is high;

2) High precision, good surface quality and easy assembly;

3) No pollution, can be carried out in an office environment.

(2) Disadvantages

1) Long molding time;

2) need support;

3) The strength along the vertical direction of the forming axis is relatively weak.

(3) Application fields

Plastic parts shape and mechanism design.

(4) Common materials

Paraffin, plastic, low melting point metal, etc.

5. 3D printing technology 3DP

(1) Advantages

1) The molding speed is fast;

2) The molding equipment is cheap.

(2) Disadvantages

1) generally requires subsequent curing;

2) The accuracy is relatively low.

(3) Application fields

A wide range of applications.

(4) Common materials

Various material powders.

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