A kind of Alloying on Metal Planes method based on ultrasonic shot peening and application thereof

A kind of Alloying on Metal Planes method based on ultrasonic shot peening and application thereof

  • CN 102,851,663 B
  • Filed: 04/09/2012
  • Issued: 06/15/2016
  • Est. Priority Date: 04/09/2012
  • Status: Active Grant
First Claim
Patent Images

1. the Alloying on Metal Planes method based on ultrasonic shot peening, it is characterized in that, the process of ultrasonic impact adds alloying powder, its dispersal behavior in a metal is enhanced after ultrasonic shot peening processes, there occurs the rapid alloying process under nonequilibrium state, thus defining alloy-layer in metal surface, generation including intermetallic compound and solid solution phase, then it is carried out heat treatment to accelerate its surface alloying process, obtain the alloy-layer tissue of densification, specifically carry out as steps described below:

  • step (1), required alloying powder is preset at surface of test piece, step (2), uses ultrasonic shot peening equipment to carry out bead, step (3), remove remained on surface alloying powder, then the test specimen after alloying is placed in atmosphere of inert gases protection under be annealed,The test specimen used in step (1) is mild steel, high-carbon steel, steel alloy, rustless steel, cast iron or iron powder sintering part;

    Described alloying powder is nikel powder, chromium carbide, carborundum, zinc powder, carbon dust, tungsten carbide, zirconium dioxide or aluminum powder;

    In described step (2), described ultrasonic shot peening technological parameter includes the pre-set thickness of shot-peening power, the translational speed of impact gun, shot-peening coverage rate, alloying powder, and shot-peening power current value characterizes, and its span is 1.0-4.0A;

    The translational speed impact gun of impact gun characterized in the time of staying of a certain fixed position, and the time of staying is at 0.5-4s;

    Shot-peening coverage rate shot-peening number of times characterizes, for 1-5 time;

    The pre-set thickness of alloying powder is 0.5-5mm.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×