焊接是一种应用量大、适用面广的技术,在21世纪的知识经济时代里,仍将是一种重要的金属材料成形加工手段。进入新世纪以来,我国焊接制造业一个引人注目的动向是向多参数、高精度、重型化和大型化发展,焊接技术已经渗透到工程制造业的各个领域,直接影响到产品的质量、可靠性、使用期以及生产的成本、效率和市场反应速度等。 Welding is a large amount of application, a wide range of applications of technology, knowledge-based economy in the 21st century era, will remain an important means of forming metal materials. Since entering the new century, a striking trend in China’s welding industry is to develop into multi-parameter, high-precision, heavy-duty and large-scale. Welding technology has penetrated into various fields of engineering and manufacturing and has a direct impact on product quality and reliability Sexuality, period of use and production costs, efficiency and market response speed.