84results about How to "Realize continuous welding" patented technology

The invention discloses a flux-cored wire for overlay welding of a forging die and an application thereof, and belongs to the technical field of material processing welding materials. Flux core powder is coated with a carbon steel belt; the filling rate of the flux-cored wire is 30-37 percent; and the flux core powder comprises the following substances in percentage by mass: 4-7 percent of calcium fluoride, 0.5-3 percent of soda ash, 0.5-4 percent of quartz, 2-6 percent of rutile, 13.6-27.2 percent of high-carbon ferro-chrome, 13.9-19.2 percent of pure chromium powder, 2.2-5.7 percent of nickel powder, 1.8-4.3 percent of electrolytic manganese, 6.3-13.2 percent of ferromolybdenum powder, 2.1-5.0 percent of ferrosilicon powder, 0.6-1.9 percent of vanadium iron powder, and the balance of reduced iron powder. The welding wire has very high high-temperature hardness and heat-fatigue resistance, and continuous welding can be realized.

The invention provides a convertible welding mold. The convertible welding mold comprises a mold body, overturning devices, outer clamping devices and inner clamping devices, wherein the mold body comprises side plates, an upper connecting plate and a lower connecting plate; the side plates are positioned on two sides of the mold body; the side plates are connected with each other by the upper connecting plate and the lower connecting plate; the overturning devices are arranged at two ends of the mold body; the outer clamping devices are arranged on the side plates on two sides of the welding mold; and the inner clamping devices are arranged on the upper connecting plate and the lower connecting plate. A workpiece to be welded is positioned and clamped by the inner clamping devices and the outer clamping devices of the turnover mold body, workpieces with two different crotch sizes can be continuously welded, the welding efficiency and the utilization rate of equipment are improved, the space is saved on overall arrangement of a workshop, the vacancy rate is reduced, and the welding cost is also reduced.

The invention discloses a pre-feeding gap eliminating device of a metal cylinder welding machine. The device comprises an upper conveying mechanism and a lower conveying mechanism, wherein the upper conveying mechanism and the lower conveying mechanism are fixedly arranged on a fixing seat, the upper conveying mechanism and the lower conveying mechanism respectively comprise two rows of chains and roller wheels, the chains are driven by a driving mechanism to synchronously run, the roller wheels are arranged on the chains and rotate around roller wheel shafts, the roller wheels are driven by the chains to do linear movement and also do radial rotation around the roller wheel shafts, and the roller wheels of the upper conveying mechanism are provided with positioning grooves which are used for positioning the crimping openings of the conveyed cylinders. When the two adjacent cylinders with a gap are conveyed between the upper conveying mechanism and the lower conveying mechanism, the gap between the end surfaces of the two metal cylinders is eliminated under the action of the friction force between the roller wheels and the metal cylinders. The pre-feeding gap eliminating device has the advantage that the continuous welding can be realized by the metal cylinder welding machine, and the arc starting and arc stopping notches are avoided on the continuous middle non-gap end surfaces of the metal cylinders, so the welding efficiency is improved, and the material loss is greatly reduced.