Copper ball

The Study of Temperature Correction of Pressure-measuring Copper Ball

测压铜球温度修正方法研究

Outside ， it was cast with eight dragons on the surface ( whose heads pointed in eight diredions-east ， south ， west, north ， southeast, northeast ， southwest ， and northwest) ， and each dragon had a copper ball in the mouth.

仪器表面铸有八条垂直向下的龙，龙头分别对准东、南、西、北、东南、东北、西南、西北八个方向，每条龙的嘴里都含着一个铜球。

Mechanism of Quasi-dynamic Calibration for Copper Cylinder and Copper Ball

铜柱、铜球准动态校准的机理

All was cleared up that some time later when news came from a distant place that an earthquake was felt the very day the little copper ball fell.

过了一些时分，从远方传来了音讯：在小铜球坠落的当天，确实发作了地震。这一切终于失掉了廓清。

The procedure of copper wire ball bonding and its reliability in power devices were investigated.

本文研究了功率器件中铜丝球键合工艺及可靠性。

Deformation resistance is an important parameter of rolling. In order to produce anodic phosphor copper ball, the deformation resistance of anodic phosphor copper should be measured by experiment.

变形抗力是轧制过程中的重要力能参数，为了斜轧阳极磷铜球产品，需要得出阳极磷铜在不同温度、不同变形程度、不同变形速率下的变形抗力。

The main influence factors of preparing molybdenum copper nano-powder by high-energy ball milling were studied; the morphology and size of powders were analyzed.

研究高能球磨法制备纳米钼铜复合粉末的主要影响因素，通过扫描电镜和透射电镜分析粉末的形貌及颗粒尺寸。

Analysis on the effect of pressure pulse widths on the quasi-dynamic calibration table of pressure-measuring copper ball

压力脉宽对测压铜球准动态校准表的影响分析

Contrast Research on the Reliability of Gold and Copper Wire/ Ball Bonding

金、铜丝球键合焊点的可靠性对比研究

As data of quasi dynamic calibration for pressure measuring copper ball are different under different temperature, the correcting equations of pressure correction and deformation correction are derived by means of regression analysis.

借助于不同环境温度下得到的测压铜球的准动态标定数据，运用回归分析技术导出了压力及变形量修正公式；

In this paper, the forming process of copper wire ball in copper ball bonding has been studied by numerical simulation.

本文采用数值模拟的方法研究了铜丝球键合技术中的形球过程。

Numerical Simulation of the Ball Forming Process in Copper Ball Bonding

铜丝球焊中形球过程的数值模拟

The formation of black film and surface dissolving state of the kneaded phosphorized copper ball of the company were compared with those of low quality rolled phosphorized copper ball.

并将该公司揉制磷铜球黑膜形成及表面溶解状况与低质量轧制磷铜球进行了比较。