Abstract: 3D printing technology is also called "rapid prototyping technology" or "additive manufacturing technology". As a revolutionary industrial technology emerging in recent years, the rapid growth trend of 3D printing technology has made all walks of life unexpected, and its international attention has not diminished. What is the development status of this core technology called "the third industrial revolution"? What kind of development environment will it face in the future? It is worth pondering.

Keywords: 3D printing technology; Higher cost; Single technology; Low utilization rate

Classification number of China Library: TP334.8 Document ID: ADAI:10.15913/j.cnki.kjycx.2017.04.036.

In recent years, 3D printing technology has been widely concerned by the international community, and related topics are also heating up. The survey shows that 3D printing technology has become one of the fastest growing industries in the United States. The reason why this happens is that western developed countries have invested a lot of manpower, material resources and financial resources in 3D printing technology and developed more abundant printing materials, which makes this technology more mature, improves accuracy and reduces costs. It is reported that the US military has applied 3D printing technology to weapons research and development, and even successfully manufactured the world's first "3D printing pistol". With the popularization of this technology abroad, China has begun to attach importance to the research and development of 3D printing technology, and has made gratifying achievements in continuous research and development.

1 Development of national 3D printing technology

Wohlers Report 20 16 issued by Wohlers Associates, a well-known market consulting company in the field of additive manufacturing, points out that in 20 15 years, the global additive manufacturing