高能机械镀（高能机械镀工艺的基本原理）

1.高能机械镀工艺的基本原理
高能机械镀是把欲镀金属(颗粒状或细片状)、冲击介质和经过预处理的零件放人容器中，容器通常具有真空环境或有惰性气体保护，装置运动使冲击介质产生强烈机械能，欲镀金属和工件在机械能的作用下牢固结合在起形成镀层， 经后续热处理增加镀层结合强度而获得最终镀层。

高能机械镀过程介质获得高机械能是依靠加速度，这不同于传统的机械镀。因此，介质往往选用硬质耐磨的球状物质作为冲击介质。

高能机械镀后续热处理的作用是:释放镀层中部分能量，使镀层趋于稳定;产生烧结效果，增加镀层的强度。

高能机械镀与传统机械镀的区别在于:高能机械镀过程冲击介质具有较高的机械能，是传统机械镀过程介质能量的几十到几百倍，并且介质能量可根据需要人为在-个较大的范围内变动。 高能冲击介质可使金属粉末扁化，还能完全摧毁工件表面的氧化膜使工件表面保持洁净

高能机械镀的工艺流程为:工件- +预处理(脱脂、除锈)→建立施镀环境(小件采用密封性容器，大件利用装夹使施度环境密封)一选择是否保护性气氛 开启装置形成镀层卸料分离热处理→贮运。

2.高能机械镀设备

高能机械镀设备的主要功能是通过机械运动(搅拌、振动、喷射、球磨、摩擦等)使冲击介质获得较大的机械能，促使欲镀金属在工件表面变形并形成金属镀层。

High energy mechanical plating
1. Basic Principles of High Energy Mechanical Plating Process
High-energy mechanical plating is to place metal (granular or thin sheet), impact medium and pretreated parts into containers. Containers usually have vacuum environment or inert gas protection. Device movement makes impact medium produce strong mechanical energy. The plating metal and workpiece are firmly combined under the action of mechanical function to form a coating, and the subsequent heat treatment increases the bonding strength of the coating. The final coatings are obtained by the degree of 65
Acceleration is used to obtain high mechanical energy in high energy mechanical plating process, which is different from traditional mechanical plating. Therefore, hard and wear-resistant spherical materials are often used as impact media.
The function of follow-up heat treatment of high energy mechanical plating is to release part of the energy in the coating and make the coating stable, produce sintering effect and increase the strength of the coating. Use mountain
The difference between high-energy mechanical plating and traditional mechanical plating is that the impact medium in high-energy mechanical plating process has high mechanical energy, which is tens to hundreds of times of the medium energy in traditional mechanical plating process, and the medium energy can be artificially changed in a large range according to needs. High energy impact medium can flatten metal powder and completely destroy oxide film on workpiece surface to keep workpiece surface clean (37,38)
The technological process of high energy mechanical plating is as follows: workpiece -+pretreatment (degreasing and rust removal) establishment of plating environment (small parts are sealed by sealed containers and large parts are sealed by clamps); selection of whether protective atmosphere is used to open the device to form plating discharge separation heat treatment storage and transportation.
2. High-energy mechanical plating equipment
The main function of high-energy mechanical plating equipment is to obtain greater mechanical energy through mechanical movement (stirring, vibration, spraying, ball milling, friction, etc.) to make the impact medium deform and form metal coating on the surface of the workpiece.

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