Laser Quenching equipment
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Used for surface strengthening, repair, and remanufacturing of components, the coating has high adhe...
Flexible processing of complex curved sheet metal parts, with high cutting accuracy, fast speed, and...
Specially designed for seamless welding of precision plastic components, with a small heat affected ...
The development of low-cost and high-performance iron-based alloy cladding powder has significant economic value in response to the strong abrasive wear conditions experienced by hydraulic supports in underground working faces. This study independently designed an iron-based alloy powder with Fe-Cr-B-Si as the main system, and systematically evaluated its wear resistance on the surface of hydraulic supports.
During the rapid laser melting and solidification process of this iron-based alloy, a large amount of high hardness borides (such as Fe2B, CrB) and carbide hard phases were generated in situ, evenly distributed on the tough ferrite/martensite matrix, forming a typical "hard phase+tough matrix" wear-resistant structure. The macroscopic hardness of the cladding layer is stable at HRC 50-55, much higher than that of the 27SiMn matrix (around HRC 30).
Comparative tests were conducted on the MLD-10 abrasive wear testing machine, and the results showed that the relative wear resistance of the iron-based cladding layer was more than three times that of the original 27SiMn steel. In the actual industrial assessment underground, the surface wear rate of the columns repaired by melting is significantly reduced, and the maintenance cycle is extended from the original 6-8 months to 18-24 months. The cost of this iron-based alloy powder is only 1/3 to 1/2 of that of isotropic cobalt based and nickel based powders, achieving the unity of high performance and low cost.
