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首页> 外文会议>Conference on Photon Processing in Microelectronics and Photonics Jan 21-24, 2002 San Jose, USA >Laser welding of plastics transparent to near-infrared radiation
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Laser welding of plastics transparent to near-infrared radiation

机译：对近红外辐射透明的塑料进行激光焊接

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摘要

This paper deals with a development of laser welding of colored plastics. Welding of thermoplastics using near-infrared lasers has been seen in wide industrial application. Most of thermoplastics are transparent to near-infrared laser. Particular characteristic of near-infrared laser radiation has the ability to heat the interface between the transparent part and absorbent one colored with pigments. However, it is difficult to weld a pair of transparent materials by a laser beam, since there is no absorption region within them. In this paper, the influence of near-IR-transparent plastics on the yield strength of their weldments has been studied: various colored plastics transparent to diode laser radiation were tested as the welding material. The heat transfer within a welding system was also analyzed and assessed the appropriate absorptivity and transmittance of overlapping colored plastic.
机译：本文涉及有色塑料的激光焊接的发展。在广泛的工业应用中已经发现使用近红外激光焊接热塑性塑料。大多数热塑性塑料对近红外激光都是透明的。近红外激光辐射的特殊特征是能够加热透明部分和被颜料着色的吸收剂之间的界面。但是，由于一对透明材料在内部没有吸收区域，因此难以用激光焊接一对透明材料。本文研究了近红外透明塑料对其焊件屈服强度的影响：测试了各种对二极管激光辐射透明的有色塑料作为焊接材料。还分析了焊接系统内的热传递，并评估了重叠的有色塑料的适当吸收率和透射率。

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