Yaness laser welding impeller technology
Yaness laser welding impeller technology
YANESS pioneered the use of laser welding impeller technology to make up for the drawbacks of traditional resistance welding. The line sealing rate of the front and rear covers and blades of the impeller is almost 100%. The smooth and accurate flow path minimizes the hydraulic loss of the flow path, ensuring the efficient operation of the pump and reducing the operating cost of the customer.
The impeller is both a wheel with a bucket and an integral part of an impeller turbine. Also refers to the general name of the wheel and the rotating blades on which it is mounted. Also refers to the general name of the wheel and the rotating blades mounted thereon.
The blade shape of the centrifugal pump impeller is of a single plate type, a circular arc type, and a wing type. The airfoil blade has good aerodynamic characteristics, high efficiency, good strength and high rigidity. The disadvantage is that the manufacturing process is complicated, and when the gas with high dust concentration is transported, the blade is easy to wear, and after the blade wears, the impurities enter the inside of the blade, causing the impeller to lose balance and generate vibration. Flat-blade straight blades are simple to manufacture, but have poor flow characteristics, while flat-plate backward blades are less efficient than airfoil blades except for the high efficiency point. The efficiency of other operating points is quite close.
The main advantages of laser welding:
(1) The amount of heat input can be minimized, the metallographic range of the heat affected zone is small, and the deformation due to heat conduction is also the lowest.
(2) The welding process parameters of 32mm plate thickness single pass welding have been qualified, which can reduce the time required for thick plate welding and even eliminate the use of metal filling.
(3) There is no need to use electrodes, no concerns about electrode contamination or damage. And because it is not a contact welding process, the wear and deformation of the machine can be minimized.
(4) The laser beam is easy to focus, align, and guided by optical instruments. It can be placed at an appropriate distance from the workpiece and can be redirected between obstacles or obstacles around the workpiece. Other welding rules are subject to the above space limitations. Can't play.
(5) The workpiece can be placed in a closed space (with vacuum or internal gas environment under control).
(6) The laser beam can be focused on a small area to weld small and closely spaced parts.
(7) The range of weldable materials is large, and various heterogeneous materials can be joined to each other.
(8) It is easy to automate high-speed welding, and it can also be controlled by digital or computer.
(9) When welding thin materials or thin-diameter wires, it is not easy to remelt like arc welding.
(10) It is not affected by the magnetic field (easy for arc welding and electron beam welding) and can accurately align the weldment.
(11) Two metals that can weld different physical properties (such as different resistances)
(12) No vacuum is required and X-ray protection is not required.
(13) If the hole is welded, the width of the weld bead can be up to 10:1.
(14) The switching device can transmit the laser beam to a plurality of workstations.
