This technology was used to make hard surface coating treatment for the crown damping surface of 8000 domestically produced new aeroengines. In addition, WSXX, WPXXB, WPXXF, WPXX and WPX and other types of engine with crowned vane damping surface also use this technology for surface strengthening treatment, and obtained very satisfactory results; Navy WPX series engine first-stage turbine blades The abrasion reduction of the flat crown damping surface is superior, and all of them are successfully repaired by applying this technique. 3. Laser micro-integral reconstruction of three-dimensional space defects in leaves Thermal cracks, casting defects, etc. on the turbine blades and the guide vanes are in an irregular three-dimensional space, compared with the laser machining process of the blade laser profiling and the damping surface laser cladding enhancement. More demanding. Laser micro-integral welding is the principle of multi-layer welding of laser powder. The low-power Nd:YAG laser beam is used to irradiate and solidify the powder body by multiple irradiation according to the optimized path, and the metallurgical accumulation between the track and the layer and the layer. Until the entire three-dimensional space is filled. A large fused cast space with three-dimensional boundaries is made up of many tiny weld points, such as an integration process. Unlike laser cladding in two-dimensional planes, laser microscopic integral welding in three-dimensional space is carried out under constrained conditions and can be regarded as a composite process of laser cladding and laser welding. The main feature of the process is that the input substrate has less heat and can obtain a cast-consolidation layer with minimal internal stress, space metallurgical bonding interface and minimal defects. When the substrate is a high Al + Ti nickel based superalloy material with high thermal crack sensitivity, laser micro-integral welding can effectively reduce and avoid cracks. Figure 3 shows the microstructure of a three-dimensional laser micro-melting nickel-base alloy in a ЖС6У alloy high-pressure turbine blade. Third, titanium alloy parts laser welding welding The use of titanium alloy parts for high-performance aeroengines is increasing, but titanium alloys are prone to wear and fatigue cracks due to their poor wear resistance and mechanical fatigue resistance. The fretting wear between the inner wall of the BT20 alloy anti-icing shell of an aircraft and its fittings causes the stepped wear groove to fail with the sealing surface, as shown in Figure 4a. Using titanium alloy high-purity laser welding and welding a complete set of process methods, the shell with a wall thickness of only 2.0 mm can be repaired without deformation, and the repaired weld zone is metallurgically bonded, and the structure is uniform and compact, as shown in Figure 4b. Fourth, magnesium alloy parts laser cladding It is well known that the key problems in the welding of magnesium alloys are easy oxidation, gasification, hot cracking and large deformation (large expansion coefficient). The argon arc welding process can be used to weld the magnesium alloy blanks, but for finished products that have been processed in place. Repair repair of parts and repair parts is difficult and often impossible. The research can realize the deformation-free repair of the workpiece by pulse laser preset and electric spark fast welding repair method. The main damage failure of aviation engine magnesium alloy parts in service is electrochemical corrosion, such as WPX front support shell, the material is ZM2 magnesium alloy, and galvanic corrosion pits occur in all contact areas with fastening bolt gaskets. The defects often encountered in the production of magnesium alloys are looseness, inclusions and hot cracks. The Kunlun engine ZM5 magnesium alloy accessory machine developed in China has the looseness caused by casting looseness. After laser repair, the microstructure is compact, without any microscopic defects, and is well combined with the matrix metallurgy, as shown in Figure 5. V. Conclusion Previous page Our range of bath taps and mixers are available in a gorgeous choice of designs. Choose from a range of contemporary or traditional Basin Taps or bath taps, or if you are looking for something a little more modern, select from our range of deck mounted or wall mounted basin and bath mixers which deliver water through a single spout. For the ultimate flexibility, also take a look at our range of bath shower mixers. Our bath taps and mixers combine exceptional quality design with real value for money. Selected products in the range also include clever flow limiting devices to help save water. Taps with lever handles have also been designed to be easy to use and some of our ranges are suitable for low pressure. Bathroom Basin Taps, Bath Mixer Taps, Shower Bath Taps, Stainless Steel Bath Taps ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.cn-kingsir.com
The laser micro-integral welding technology was used to successfully repair the tip crack of the high-pressure turbine blade of an imported aero-engine. The repaired blade passed the long-term test of the engine ground gantry and has entered the batch repair stage. In addition, the overall guide casting defect is a very difficult problem, using this technology to successfully repair a new type of direct engine K6C alloy integral guide precision castings more than ten. 
Titanium alloy high-purity laser cladding welding technology has been successfully applied to the remanufacturing of aero-engine components. At present, several imported engine intermediaries have been repaired, and hundreds of anti-ice shells and cup-shaped parts have been repaired. 
With the further development of laser cladding (welding) technology and the increasing awareness of the aerospace manufacturing industry, laser cladding welding technology will be more widely used in aero-engine manufacturing and remanufacturing.