Method and system for welding railroad rails-7

Method and system for welding railroad rails-7

Ceramic Welding Backing | Ceramic Backing Welding| Ceramic Backing Taps

In accordance with another aspect of the present invention, there are a series of decision points in the selected path as the torch moves at an angle along the fillet between the backing plate and the end of one of the rails. At each of these decision points, a determination is made whether an arc blow through, forced or unforced, has occurred. If there has been no arc blow through in two adjacent decision points in one longitudinal branch of the fillet weld, the voltage of the power supply is decreased to reduce the footprint of the arc causing a concentrated arc and thus a forced blow through. By using this aspect of the invention, in combination with the other aspect of the invention, an improved root pass is created along the upper level of the consumable backing plate and in the fillet areas.

The primary object of the present invention is the provision of a method and system for creating a root pass between the ends of two large metal members.

In accordance with still a further object of the present invention, there is provided a method and system as defined above, which method and system is easily implemented with standard robotic control mechanisms so a quality root pass can be deposited to fill the gap between the ends of the railroad rails.

Still a further object of the present invention is the provision of a method and system, as defined above, which method and system utilizes the arc current to determine when there has been an unwanted arc blow through whereby the blow through hole can be filled. Blow throughs are intentionally created in the fillet areas to produce an ideal fillet weld for the root pass.

Another object of the present invention is the provision of a method and system as defined above, which method and system senses blow through and fills the unwanted blow through holes.

Still a further object of the present invention is the provision of a method and system, as defined above, which method and system create a fillet weld between the rails and the backing plate by using an intermittent series of forced blow throughs to provide desired penetration.

These and other objects and advantages will become apparent from the following description taken together with the accompanying drawing.

Date: 2023-04-10     hits: 596    Return