Optimized design of valve plate for straight seam steel pipe
Straight seam steel pipe from the process point of view of such a structure of the valve plate, since the process point of view of such a structure of the valve plate to analyze. As can be seen in Figure 2, the valve plate consists of three parts: the stand plate, pad plate, large round steel plate. If the adoption of this structure of the valve plate, the pad plate war plate can be indirectly formed, while the small square steel plate requires the process staff to first calculate the size of the material, and then according to the required curvature to make the pressure shaped tire tool, with the tire tool will be small square steel plate suppression forming, the first and other two pieces of group welding. And the primary achievement out of the production of pressure shaped tire tool this step, through the process of Figure 2 can see that the middle sector of the valve plate for the arc, the edge is not a plane, that will have to do a specification of each valve, to do a tire tool, or not less than the required shape of the pressure. That tangibly increases the production cost of the enterprise.
The main use in the metallurgical blast furnace system pipeline outside, connecting rod butterfly valve butterfly valve a structural form. Therefore, the connecting rod butterfly valve is being commonly used in the hot blast furnace system of atmosphere, gas, flue gas and other media pipelines.
Double-sided submerged arc welding is a new welding method invented in 1940, which is the same as the previous manual welding is that it still uses slag protection, but the slag is not the electrode flux, is specially molten out of the welding flux. The flux system consists of a hopper of flux transported through a pipe to the front of the weld. The difference is that instead of using a welding rod, a welding wire is used because the wire can be sent continuously; with a welding rod, we always have to have a head to throw away after burning a welding rod, and the operation has to stop, change the welding rod and then weld again. This method is automated; it is under the submerged arc for welding, so its heat exchange and protection performance is stronger, the quality of welding out is higher, because the submerged arc automatic welding in the arc buried in the welding flux under, so it can use high current, welding efficiency is higher.
