加工方法

The process flow of frozen boiled crawfish ,the genera of microorganism and its heat resistance and pathogenicity were analyzed in this article.

分析了出口冻煮小龙虾的生产工艺、控制微生物的种类及其相应的耐热性和致病隐患等方面，得出蒸煮是控制小龙虾生产加工过程中微生物的有效方法，并且得出影响蒸煮的因素有蒸煮数量、加工季节和虾体大小。

ECCO ROLLER is specially providing FORGING STEEL ROLLERS for steel, aluminum, cupper milling enterprises, SHEAR CUTTERS and HEAT TREATMENT PROCESSES, as well as MERCHANICAL PROCESSES.

成立于2005年的常州艾柯轧辊有限公司，运用现代化的管理理念和方法，完善成熟的技术、先进的生产与加工装备，为高速增长的世界金属压延工业服务，专业生产各种钢铁、铝、铜冷轧锻钢轧辊，剪板机刀片以及提供先进的热处理和机械加工业务。

According to Faraday Law, the eroded quantity of metal depends on current density and machining time.

在实验的基础上，对影响加工质量的各因素进行了详细的分析，提出了改善加工质量的方法。

Dry cutting process is one kind of processing method that does not use cutting oil at cutting process.

干切削加工是在切削加工中不使用切削液的工艺方法。

Furthermore, to counter the uncertainty of the processing time in the practical production process, this paper builds a single machine earliness/tardiness with fuzzy processing time.

本文针对实际加工过程中作业时间的不确定性，研究了任务加工时间为模糊区间的单机提前／拖期问题，提出采用模拟退火算法对该模型进行求解，仿真结果表明，该方法具有较强的实用性。

This article detailed introducts forming mechanism,influence factor,control method and elimination means at drilling processing.

详细介绍了钻削加工毛刺的形成机理、影响因素、控制方法以及消除办法，揭示出了有效控制与解决钻削加工毛刺的基本规律。

In the processing of NC milling ,there are many kinds of methods to control the forging envelop of part.

在数控铣削加工过程中，对零件加工余量的控制方法有很多种。

To improve the machining efficiency and precision of convex screws,a new method was put forward for inner whirlwind NC enveloping milling of screw curved surface.

为提高凸螺杆的加工效率和加工精度，将具有切削平稳、效率高等特点的传统旋风铣削技术与具有轨迹控制灵活等特点的数控技术相结合，提出了内旋风数控包络铣削螺杆螺旋曲面的新方法。

By using the CFD software FLUENT, the inner-flow field of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller has been simulated. The static pressure distribution, the dynamic pressure distribution, the total pressure distribution, the turbulent intensity and the speed vector of the two kinds of centrifugal fans are then analyzed and compared. From the calculating results, we found that the pressure distribution, the speed vector and other parameters of the two kinds of centrifugal fans are basically same. This implies that the tool-path generating arithmetic for the machining of the impeller can meet the aerodynamic requirements of the centrifugal fan. Furthermore the method can provide proof for designing department to establish sound manufacturing tolerance for impeller.

最后采用CFD软件FLUENT，利用标准k-ε湍流模型，采用分离隐式求解器，分别对直纹面叶轮离心通风机和包络面叶轮离心通风机整体风机内部三维流场和单个通道流场进行了数值模拟计算，在计算结果的后处理中，对相同坐标值处的静压力、动压力、湍流强度和速度矢量等参数进行了分析与比较，结果表明：在相同的计算参数条件下所得到直纹面叶轮离心通风机和包络面叶轮离心通风机内部流场差别不大，从而揭示所采用的叶轮数控加工的刀位规划方法的规划误差对流体机械动力性能的影响不大，这也为设计部门制定合理的叶轮加工公差提供了依据。

Based on the concepts of complex product, standard operation, virtual operation, no-wait and the expansion processing tree defined in this paper, the standard operations are processed by allied critical path method and best fit scheduling method, and the virtual operations are processed respectively on corresponding machine with movement and exchange algorithm in order to translate scheduling problem with no-wait operations into the general scheduling problem with virtual operations.

该方法在提出复杂产品、标准工序、虚拟工序、零等待和扩展加工工艺树的概念基础上，对扩展加工工艺树中的标准工序采用拟关键路径法和最佳适应调度的车间调度算法进行调度，对虚拟工序采用移动交换算法在相应设备上分离调度，将存在零等待约束的调度问题转化为存在虚拟工序的无零等待约束的调度问题。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。