一、激光手持焊是一种利用激光束进行焊接的技术，其工作原理如下：

激光产生

激光手持焊设备中的激光发生器通过激励源（如脉冲氙灯、半导体激光器等）向增益介质（如钕玻璃、YAG晶体、光纤等）输入能量，使增益介质中的粒子实现能级跃迁，形成粒子数反转分布，从而产生受激辐射，输出高能量密度、高方向性、单色性好的激光束。

激光传输 

产生的激光束通过光纤等传输介质传导至手持焊接头。光纤具有良好的柔韧性和低损耗特性，可将激光高效地传输到焊接部位，同时方便操作人员灵活移动手持焊接头进行焊接作业。

激光聚焦与作用。

在手持焊接头中，激光束通过聚焦透镜等光学元件进行聚焦，使激光束在焊件表面形成一个极小的光斑，从而提高激光的能量密度。当聚焦后的激光束照射到焊件表面时，激光的能量被焊件材料吸收，使焊件表面迅速熔化甚至汽化，形成一个匙孔。随着激光束沿着焊接方向移动，匙孔也随之移动，周围的液态金属会不断填充匙孔后方的空间，冷却凝固后就形成了焊缝，从而实现焊接连接。

  I、Handheld laser welding is a welding technology that uses a laser beam, and its working principle is as follows:

 Laser Generation

 In the handheld laser welding equipment, the laser generator inputs energy to the gain medium (such as neodymium glass, YAG crystal, optical fiber, etc.) through an excitation source (such as a pulsed xenon lamp, semiconductor laser, etc.), causing the particles in the gain medium to undergo energy level transitions and form a population inversion distribution. As a result, stimulated radiation is generated, and a laser beam with high energy density, high directivity, and good monochromaticity is output.

Laser Transmission

The generated laser beam is conducted to the handheld welding torch through a transmission medium such as an optical fiber. The optical fiber has good flexibility and low loss characteristics, which can efficiently transmit the laser to the welding position. At the same time, it is convenient for the operator to flexibly move the handheld welding torch for welding operations. 

Laser Focusing and Action

In the handheld welding torch, the laser beam is focused through optical components such as a focusing lens, making the laser beam form a very small spot on the surface of the welded part, thereby increasing the energy density of the laser. When the focused laser beam irradiates the surface of the welded part, the energy of the laser is absorbed by the material of the welded part, causing the surface of the welded part to melt rapidly or even vaporize, forming a keyhole. As the laser beam moves along the welding direction, the keyhole also moves accordingly. The surrounding liquid metal will continuously fill the space behind the keyhole. After cooling and solidification, a weld seam is formed, thus achieving the welding connection.

二、HTHJ--系列手持激光手持焊机机器的用途

         手持激光焊机广泛应用于钣金加工、轨道交通、汽车、工程机械、农林机械、电气制造、电梯制造、家用电器、粮食机械、纺织机械、工具加工、石油机械、食品机械、厨具卫浴、装饰广告、激光对外加工服务。

       手持激光焊机操作简单，无需专业焊接技术经验，简单培训2小时即可开始操作。焊接速度超快。一台手持式激光焊机基本可以替代3-5台普通焊机的输出。手持激光焊机焊接基本上可以不用耗材，节约生产成本。焊接之后，焊缝光亮、白皙，基本无需打磨即可。具有能量集中、热反射范围小、产品不易变形等优点。激光焊机能量集中，焊接强度很高。

II. Applications of the HTHJ-series Handheld Laser Welding Machine

Handheld laser welding machines are widely used in various fields, including sheet metal processing, rail transit, automotive manufacturing, construction machinery, agricultural and forestry machinery, electrical manufacturing, elevator manufacturing, household appliances, grain machinery, textile machinery, tool processing, petroleum machinery, food machinery, kitchenware and bathroom products, decoration and advertising industries, as well as laser outsourcing processing services.

The handheld laser welding machine is easy to operate. Without the need for professional welding technical experience, operators can start working after just 2 hours of simple training. It features an extremely fast welding speed. Basically, one handheld laser welding machine can replace the output of 3 to 5 ordinary welding machines. Handheld laser welding machines generally require almost no consumables, which helps to save production costs. After welding, the weld seam is bright and white, and basically does not need to be polished. It has the advantages of concentrated energy, a small heat reflection range, and the property that the products are not easily deformed. The energy of the laser welding machine is concentrated, resulting in a very high welding strength. 

三、HTHJ--系列手持激光焊接机机器常用规格（Common Specifications of HTHJ-series Handheld Laser Welding Machines）：

Note: The data listed in this material are for reference only. In case of any discrepancies with the actual data of the machine tool, the actual data of the machine tool shall prevail.

The above parameters are subject to change without prior notice. The company reserves the right to the final interpretation of this material!