专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5760363A Apparatus and method for starting and stopping a plasma arc torch used for mechanized cutting and marking applications 失效
标题翻译：用于启动和停止用于机械切割和标记应用的等离子弧焊炬的装置和方法
公开(公告)号：US5760363A
公开(公告)日：1998-06-02
申请号：US707227
申请日：1996-09-03
申请人： Elizabeth B. Hackett , Timothy M. Brewer , Zhipeng Lu , Richard W. Couch, Jr.
发明人： Elizabeth B. Hackett , Timothy M. Brewer , Zhipeng Lu , Richard W. Couch, Jr.
IPC分类号： B23K10/00 , H05H1/26
CPC分类号： H05H1/26 , B23K10/00
摘要： A plasma arc torch apparatus and method for cutting or marking a workpiece includes a torch having an electrode and a nozzle coupled to a power supply, and a plasma gas source coupled to a fluid line for delivering plasma gas to the torch. A flow restriction member is disposed in the fluid line adjacent the torch and causes the pressure of the plasma gas in the torch to gradually increase during start up thus creating a stable plasma arc. A three-way valve is disposed in the fluid line downstream of the flow restriction member and has an inlet, a torch outlet, and a vent outlet. The inlet is in fluid communication with the torch outlet for delivering plasma gas to the torch when the valve is in the open position, and the torch outlet is in fluid communication with the vent outlet when the valve is in the vent position, for rapidly dissipating the gas in the plasma chamber of the torch to atmosphere after the arc has been extinguished. The rapid reduction of the gas pressure in the torch reduces the cycle time, enabling the torch to be restarted more quickly after completion of a prior cutting cycle.
摘要翻译：用于切割或标记工件的等离子弧焊枪装置和方法包括具有连接到电源的电极和喷嘴的焊炬以及耦合到用于将等离子体气体输送到割炬的流体管线的等离子体气体源。流动限制构件设置在与割炬相邻的流体管线中，并且在启动期间使得手电筒中的等离子体气体的压力逐渐增加，从而产生稳定的等离子体电弧。三通阀设置在流动限制构件下游的流体管线中，并具有入口，火炬出口和排气口。入口与火炬出口流体连通，当阀门处于打开位置时，将等离子体气体传送到割炬，当阀门处于通风位置时，火炬出口与排气口处于流体连通状态，以快速消散火炬等离子体中的气体在电弧熄灭后到大气中。手电筒中气体压力的快速降低减少了循环时间，从而能够在完成先前的切削循环之后更快地重新启动割炬。

2. 发明授权

US5773788A Gas mixtures for plasma arc torch cutting and marking systems 失效
标题翻译：用于等离子弧割炬切割和标记系统的气体混合物
公开(公告)号：US5773788A
公开(公告)日：1998-06-30
申请号：US707247
申请日：1996-09-03
申请人： Zhipeng Lu , Elizabeth B. Hackett
发明人： Zhipeng Lu , Elizabeth B. Hackett
IPC分类号： B23K10/00 , B23K35/02 , B23K35/38
CPC分类号： B23K10/00 , B23K35/383 , B23K35/0211
摘要： A method of operating a plasma arc torch for marking a metallic workpiece spaced a stand-off distance from the torch utilizes a torch that includes a body, an electrode, and a nozzle mounted in the body so as to define a plasma chamber. The nozzle has a central passage and an exit orifice through which the transferred arc passes to the workpiece. The method also utilizes a plasma gas flow through the body to form a pilot arc in the plasma chamber and then to form a transferred arc between the electrode and the workpiece. The method includes forming the plasma gas flow with a selected mixture of hydrogen and an inert gas. The percentage of hydrogen in the selected mixture is between 0% and 35%. The percentage of inert gas in the selected mixture is between 100% and 65%. The inert gas may be argon.
摘要翻译：操作用于标记与割炬隔开距离的金属工件的等离子体电弧焊炬的方法利用包括主体，电极和安装在主体中的喷嘴的炬，以限定等离子体室。喷嘴具有中心通道和出口孔，转移的电弧通过该出口孔通过工件。该方法还利用通过主体的等离子体气流在等离子体室中形成引导电弧，然后在电极和工件之间形成转移的电弧。该方法包括用氢和惰性气体的选定混合物形成等离子体气流。所选混合物中氢的百分比在0％至35％之间。所选混合物中惰性气体的百分比在100％至65％之间。惰性气体可以是氩气。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式