介绍了金属材料顶锻试验的方法和设备。
Introduce the new method and equipment about metallic materials forging test.
顶锻力由可调节的多组高精度弹簧结构产生。
Upsetting force is produced by precisely adjustable spring loaded mechanism.
气动加压，阻尼系统，保证加压，顶锻动作稳定。
Pneumatic pressure and damp system can keep the welding in stable process.
闪光推进和顶锻采用凸轮控制，闪光速度平稳对接焊口质量好。
Flash impetus and adopting projection anulus controlling upsetting, steady speed flash and quality of butt welding point is well.
在连续闪光阶段通过控制顶锻缸的位置实现了对闪光曲线的控制。
Through location control of upset cylinder, flash curve can be controlled in consecutive flash stage.
实现了焊接过程中引弧、旋弧、顶锻的自动控制，操作简单方便。
The device could easily and automatically control arc ignition, arc rotation and upset.
通过观察焊瘤是否具有均匀分布的毛刺特征，可以初步判断顶锻参数的匹配效果。
The matching effect can be observed by the fact whether the burr distribution is uniform or not.
利用所建立的闪光对焊热力耦合模型计算了顶锻过程中顶锻接触行为的主要影响因素与规律。
The mainly effective factors and rules of contact forging by using the heat-mechanical coupling model were computed.
结果表明：钢轨焊接所需顶锻力随顶锻量、顶锻速度的增加而增大，随焊口温度的降低而升高。
The results show that the upset force increases with the increasing of the upset length and upset speed, and increases with the reducing of the heating temperature.
该系列对焊机采用螺杆压紧工件，选择合适的电流档位和顶锻力，人控焊接时间完成焊接过程。
This series use screws to compress the work pieces. The welding process is finished under the reasonable current gear and upset force in the man-controlled time.
同时用实验手段研究了顶锻力与顶锻位移之间的关系，并通过接头性能的考核试验，验证了上述关系理论。
The experimental study has been performed to verify the relationship between forging load and deformation, and the theoretical mode...
该系列对焊机采用可调的偏芯轮压紧工件的方式，选择合适的电流档位和顶锻力，人控焊接时间完成焊接过程。
With adjustable eccentric pressure work piece applied on this welder, welding process is artificially controlled with proper current and upset force.
影响闪光焊接头性能的最主要因素包括焊缝区域的温度场分布、闪光顶锻的工艺参数和焊缝区域出现的缺陷组织。
The quality of the FBW joint is mainly decided by temperature field distribution, process parameters during upsetting and the structure defects.
轧制过程中各道次的不均匀变形和挤压褶皱造成了圆钢表面的长条形缺陷，而表面和近表面缺陷是造成冷顶锻开裂的主要原因。
Uneven deformation and extrusion drape in the different pass when rolling cause long strip defect on the surface. Defects on the surface and near surface are the main cause for cold heading to craze.
从而成功地实现了对气压焊的焊接压力、气体流量、顶锻位移量等焊接过程参数的控制，并使控制系统具有较快的动态响应速度和较高的控制精度。
So the control of the welding parameter such as welding pressure, gas flux, upsetting length is realized, and the system has a high dynamic response rapid and a high control precision.
从而成功地实现了对气压焊的焊接压力、气体流量、顶锻位移量等焊接过程参数的控制，并使控制系统具有较快的动态响应速度和较高的控制精度。
So the control of the welding parameter such as welding pressure, gas flux, upsetting length is realized, and the system has a high dynamic response rapid and a high control precision.
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