5results about How to "Reduce weld defects" patented technology

The application relates to the technical field of welding materials, and particularly discloses a high-temperature-resistant flux-cored wire containing rare earth elements and a preparation method thereof. The high-temperature-resistant flux-cored wire containing rare earth elements comprises a wire sheath and a core; the core comprises the following raw materials: dehydrated rutile, dehydrated potassium feldspar, zircon sand, metal chromium powder, metal nickel powder, electrolytic manganese, ferrotitanium, aluminiferous iron, potassium cryolite, potassium titanate, sodium titanate, iron powder, yttrium-based iron alloy powder, atomized ferrosilicon, chromium-iron nitride, bismuth oxide, an additive, and the balance of reduced iron powder; the additive is a mixture of zirconium-iron alloy, ferrotitanium alloy and aluminum-magnesium alloy. The application introduces a specific alloy additive into the core to protect the transition of the rare earth yttrium, optimizes the welding performance of the yttrium and multiple components in cooperation, matches the 253MA heat-resistant steel, adjusts the components of the molten slag and the electric arc, and reasonably processes the technology, so that the welding quality of the wire is improved.

This application relates to the field of welding fixture technology, specifically providing a fixing device for high-altitude laser welding of outdoor gas pipelines. The device includes: a device body for temporarily fixing a new pipe section; a first clamping and fixing part fixedly disposed on the left side of the device body for clamping an existing pipe section; a second clamping and fixing part detachably disposed in the middle of the device body for clamping and fixing the weld joint between the existing and new pipe sections; and a third clamping and fixing part fixedly disposed on the right side of the device body for clamping the new pipe section. This provides a more reliable clamping force during high-altitude operations, effectively preventing pipeline displacement caused by wind disturbance or gravity, thereby improving laser welding quality, reducing weld defects, and ensuring the welding safety and reliability of outdoor gas pipelines.

The utility model discloses a sterilization cabinet with a water jacket structure, and relates to the technical field of sterilization cabinets, the sterilization cabinet comprises an inner-layer annular plate, a cavity is formed in the inner-layer annular plate, a plurality of annular pipes are connected to the outer surface of the inner-layer annular plate at intervals, the annular pipes are connected with an outer-layer annular plate, the outer-layer annular plate surrounds the annular pipes, and the outer-layer annular plate is connected with a water jacket. The inner-layer annular plate is rotatably connected with an opening of the cavity, the outer-layer annular plate is rotatably connected with a door, the door is used for covering the opening of the cavity and the annular pipes, the annular pipes are connected with a heating water circulation assembly, and the inner-layer annular plate, the outer-layer annular plate and the two adjacent annular pipes define an air circulation channel. The inner-layer annular plate is provided with a plurality of through holes communicating with the air circulation channel, and the outer-layer annular plate is connected with an air circulation assembly. According to the annular pipe, the sealing performance problem caused by a traditional welding structure is avoided, the water leakage risk is reduced, and the reliability of equipment is improved.

This invention belongs to the technical field of welding equipment, specifically providing a welding device and method for a communication base station support component. The device includes a slide rail; a lifting mechanism; two welding positioning mechanisms located at opposite axial ends of a steel pipe; each welding positioning mechanism includes a base slidably connected to the slide rail, with a first power unit located below the base; a centering clamping assembly fixed to the top of the base for clamping a flange; a support assembly coaxially and rotatably mounted on one side of the centering clamping assembly, one end of which passes through the inside of the steel pipe and supports the inner wall of the pipe; a first drive assembly located on one side of the centering clamping assembly; and a welding assembly consisting of a first welding torch and a second welding torch, with their output ends facing the outer circumferential fillet weld and the inner circumferential fillet weld of the flange, respectively. This invention ensures the coaxial alignment accuracy between the steel pipe and the flange through the centering clamping assembly and the support assembly, avoiding misalignment.

The application belongs to the technical field of hydraulic engineering manufacturing, and provides a large-span water conservancy gate and a manufacturing process thereof; in a historical symmetry welding period, a visual sensor is used to simultaneously monitor welding tracks of welding joints in symmetric directions to obtain A welding sub-track and B welding sub-track; the welding seams on both sides of the A welding sub-track and the B welding sub-track are analyzed from the space X axis, the space Y axis and the space Z axis, respectively; the overall fitting degree of the A welding sub-track and the B welding sub-track in the three-dimensional space is reflected, that is, the consistency comprehensive performance of the welding seams on both sides in each dimension, so as to help reduce the vibration and shaking of the gate in the running process due to the inconsistent welding seam positions, make the structure stress of the gate more uniform, enable the gate to bear greater external force, effectively reduce the gap at the welding seam, improve the sealing performance of the gate, and prevent the occurrence of problems such as water leakage.