In the surface treatment technology of hand board model finishing, the main technology can be divided into traditional finishing technology and non-traditional finishing technology. The traditional finishing technology is mainly manual grinding and polishing, which has developed into mechanical finishing; the non-traditional polishing technology mainly includes chemical polishing, electrochemical polishing, electrolytic polishing, electrochemical mechanical polishing, ultrasonic machining, magnetorheological polishing, laser polishing and EDM polishing.

　　1. 手工研磨抛光

　　1. Manual grinding and polishing

　　该方法不需要专用设备，适应性强。这主要取决于操作者的经验和技术水平。效率低(约占整个手动模式周期的1/3)。但是，鉴于社会、经济和技术发展的现状，这种加工方法暂时还不能完全。

　　This method does not need special equipment and has strong adaptability. It mainly depends on the experience and technical level of the operator. Low efficiency (about 1 / 3 of the whole manual mode cycle). However, in view of the current situation of social, economic and technological development, this processing method can not be completely eliminated for the time being.

　　2. 数字式手工抛光机

　　2. Digital hand polishing machine

　　该抛光工具采用数控、数显及工艺参数控制，配有全套磨头及磨料，半自动抛光，具有体积小、使用方便、质量稳定、重复性好等优点。用途:a.材料:各种手板材料，包括铸钢、锻钢、铝合金、锌合金等。B.手板表面尺寸:100×100(mm)- 1500×3000 (mm)。

　　The polishing tool adopts numerical control, digital display and process parameter control, equipped with a full set of grinding head and abrasive, semi-automatic polishing, with the advantages of small volume, convenient use, stable quality, good repeatability, etc. Application: A. materials: all kinds of hand plate materials, including cast steel, forged steel, aluminum alloy, zinc alloy, etc. B. Surface dimension of hand board: 100 × 100 (mm) - 1500 × 3000 (mm).

　　3.超声波手工抛光机

　　3. Ultrasonic manual polishing machine

　　抛光工具采用高频电火花加工脉冲功率和超声快速振动磨削原理进行抛光。它可以完成一般抛光工具(电磨软轴等)难以伸入的窄槽、窄缝、边缘、角度等扭转部位的抛光，抛光后不崩坏边角，不影响手模精度。使用本工具进行抛光，可快速对粗糙表面进行成型和抛光，不受工件形状、材料硬度的限制，原始表面粗糙度不要求，效率相对较高。

　　High frequency EDM pulse power and ultrasonic vibration grinding principle are used for polishing tools. It can finish the polishing of narrow groove, narrow seam, edge, angle and other twisting parts which are difficult to be extended by common polishing tools (such as electric grinding soft shaft). After polishing, the edge angle will not be broken and the accuracy of hand mold will not be affected. Using this tool for polishing, the rough surface can be shaped and polished quickly, which is not limited by the shape of the workpiece and the hardness of the material. The original surface roughness is not required and the efficiency is relatively high.

　　4、采用高速铣削技术作为手版半精加工和精加工手段

　　4. Using high speed milling technology as the means of semi finishing and finishing

　　与电火花加工相比，高速铣削可节省25% ~ 60%的加工时间。高速铣削的表面质量好，可以避免电火花加工可能出现的表面细纹;高速铣削可加工45 ~ 60HRC硬面，精密铣削表面粗糙度可达Ra=0.63mm，减少人工抛光时间;省去了电火花加工电极的制造过程，大大缩短了成型周期。

　　Compared with EDM, high speed milling can save 25% - 60% of machining time. The surface quality of high-speed milling is good, which can avoid the surface fine lines that may appear in EDM; the surface roughness of high-speed milling can process 45 ~ 60HRC hard surface, and the surface roughness of precision milling can reach RA = 0.63mm, which can reduce the artificial polishing time; the manufacturing process of EDM electrode is omitted, and the forming cycle is greatly shortened.

　　5. 电化学和电化学机械加工

　　5. Electrochemical and electrochemical machining

　　电化学及其复合整理技术主要是利用金属工件的电化学阳极溶解原理进行的，属于离子的去除。由于无接触加工，不存在加工变形层、变质层和残余应力;工具无磨损，可长期使用;没有闪光和毛刺。电化学加工的使用寿命比普通超精加工提高5倍以上。

　　Electrochemistry and its composite finishing technology is mainly based on the principle of electrochemical anodic dissolution of metal workpiece, which belongs to the removal of ions. Due to non-contact processing, there is no processing deformation layer, metamorphic layer and residual stress; the tool has no wear and can be used for a long time; there is no flash and burr. The service life of electrochemical machining is 5 times longer than that of conventional superfinishing.