Abstract : this paper deals with the process methods to eliminating theextruded crazes by increasing the punch diameter and hole surface finish . the plans for extruding the deeper hole articles are feasible 文摘:研究了消除深孔薄壁挤压零件产生裂纹的措施，提出了用增大芯轴对孔的过盈量来提高金属塑性及内孔壁光洁度的方法，消除了裂纹的产生，制造出了使用性能较好的零件。
Speedtrol auto ceiling led the enclosure of auto ceiling led light made of industrial pv plastic high degree of tension and inflammable . and the super brightness led can provide double brightness than typical florence tube Led车顶灯采用坚固的pc塑胶为外壳，具有热变形系数高，高透光率和高光洁度特点，并且全部配置多颗超高亮的led射灯，点亮后熠熠生辉，满足乘客所需亮度。
All kinds of diamond tool which our factory produced is wear - resisting , have long performance life , process the high , smooth finish high characteristic of efficiency , the products are processed the friend ' s welcome deeply by every level stone material 本厂生产的各类金刚石工具，具有耐磨、使用寿命长、加工效率高、光洁度高等特点，产品一直深受各层次石材加工朋友的欢迎。
Medieal needle with two elastic eyes is made of high quatified stainless steel . the spear is sharp , even , tough and elastic . it is not necessary to thread a needle bceause the suture can be easily tumbled in the eyes 医用双孔弹机孔缝合针是用高级不锈钢丝材料制成，针尖锋利，刺穿顺畅，硬度、弹性、韧性、光洁度极佳，为方便医生使用，针孔不用穿线，只需把线嵌入即可使用，操作简易安全方便。
Product features : seiko maintained brick comprehensive advantages of high - grade reproduction stone rapid change lines and natural elegance of the zodiac . in a three - dimensional level , smoothness , wearable pressure , bending , and other physical properties of full beyond 产品特点:保持了精工砖的综合优点，再现高档石材变化万千的纹路和自然高贵的质感，在立体层次、光洁度、耐磨耐压、抗折等物理特性上获得全面超越
They have characteristics of good - looking , high brightness , novel design and glaze softness . the cadmium lead content is much lower than international standard . for hardness and standing high temperature , it can be washed by machine in any hotel or family 产品具有白度高光洁度好釉面柔和，适宜宾馆和家庭使用机械强度高，适宜于机械洗涤热稳定性能好，适宜于高温蒸煮消毒含铅镉溶出量低于国际标准等特点。
Moreover , in order to pursue dimensional precision and shorten the time required for grinding , we make the surface roughness of the electro - discharge and nc direct carving processes as small as possible , and apply this technique to the light guide plates , etc . , for which mirror polishing is required 为追求尺寸精度和缩短打磨加工时间,我们尽可能降低放电加工和nc直雕面的粗糙度,并应用于要求具有镜面光洁度的导光板等加工中。
The main technology characteristics are : work method as slow speed wire cut machine with multi cut function to raise the precious and surface quality , high effective stripe auto recovery function . all controls and programs are under windows2000 operation system 线切割机床的主要技术特点：按慢走丝加工方式加工，具多次切割功能，提高产品光洁度具智能条纹覆盖功能，可高效切割无条纹工件加装耐磨导向器，减少运丝抖动全部编程控制在window2000下完成。
At last , the surface of the alumina femoral head was grade - polished with sic micropowder and diamond grinding cream , the join part was trimmed with specific instrument , which made the surface of the alumina femoral head reach the degree of approximating mirror finish and match the femoral stem well . the artificial partial hip joint prostheses was finally got by articulating the alumina femoral head with ti alloy femoral stem coated with bioactive coating 最后，采用sic超细粉和金刚石研磨膏对氧化铝陶瓷股骨头表面进行分级抛光，用专用器械修整其联接部位，得到表面具有近似镜面光洁度并与股骨柄配合良好的氧化铝陶瓷股骨头，并与表面涂覆生物活性涂层的钛合金股骨柄配伍，最终获得人工半髋关节假体。
