Steel Rail Accessories Link part

Rail connection

What parts of the rail link need to use a variety of connectors to ensure its ruggedness and flexibility, then usually when the rail rail rail rail connection which?

Joint connection parts. Including plywood, bolts and spring washers. Plywood. Commonly known as fish plate, made of steel with the same steel. Mostly double-headed, both sides of the upper and lower sides are inclined, and the bottom of the steel head and the bottom of the bottom phase wedge. bolt. A fastener that clamps the rails by means of a nut. In order to stop the nut tightening due to the vibration of the train and loose, need to add spring washers. Bolts are generally made of high-carbon steel, the diameter should not be too large, so as not to weaken the strength of the rail and plywood.

Intermediate connection parts. Also known as fasteners, depending on the type of sleeper used in conjunction with a variety of different combinations. Wooden pillow fasteners, including common spike and iron pad. The advantage of this fastener is less parts, easy to install, but the buckle force is small. In order to improve the performance of wooden pillow fasteners, many countries use screwdrivers or spring studs instead of ordinary spikes, or switch to concrete sleeper has been effective in a variety of different types of fasteners.

Concrete sleeper fasteners, including anchor bolts, iron plate, buckle and elastic cushion. Anchor bolts. For fastening the use of fastening parts, there are a variety of different anchoring methods.

Rail welding technology content is difficult, welding is necessary if the professionals to operate in the welding is the first rail to be preheated, professional welding staff is how to preheat it, the process of preheating the flame temperature is how to control it, Let's listen to what the rail welding company is saying.

Adjust the flame, rail preheat. The pressure on the liquefied gas and oxygen regulator completely released (zero), and then the two preheater valve fully open. The pressure of the liquefied gas was adjusted to 0.07 MPa and the oxygen pressure was adjusted to 0.49 MPa, respectively, by means of oxygen and liquefied gas. Measure and record the rails and heat the rails with a preheater. Install the preheater bracket and adjust the position so that the preheater is in the center of the sand mold and the distance of the preheater from the rail surface is maintained in the range of 48 to 55 mm.