Patent ID: 11932927
Assignee: CHINA MACHINERY INSTITUTE OF ADVANCED MATERIALS (ZHENGZHOU) CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. An ultra-high-speed laser cladding process using an iron-based metal powder, comprising:
machining a surface of substrate;
wiping the surface of substrate with acetone to remove surface grease;
carrying out laser cladding path planning according to a geometry of the surface of substrate,
formulating process parameters; and
using Computerized Numerical Control (CNC) machine tools to machine the repaired substrate surface to obtain the required size;
wherein a semiconductor laser cladding system is used to clad and repair the surface of substrate with the following process parameters: laser power 1500˜2500 W, spot diameter 0.8˜1.2 mm, powder feeding rate 2˜5 kg/h, laser scanning rate 330˜830 m/min, overlap rate 40%˜70%, and single layer cladding thickness 250˜500 μm, wherein a laser cladding head with an argon gas protection function is used, and wherein an argon gas flow rate of 8˜20 L/min is used,
wherein the iron-based metal powder comprises: C at 0.6˜1.0%, Cr at 18.0˜20.0%, at Ni 5.0˜6.5% at Mn 2.0˜4.0%, at Mo 1.0˜1.5%, Ti at 4.0˜6.0%, B at 1.0˜1.5%, N at 0.08˜0.15%, Si at ≤0.5%, P at ≤0.030%, S at ≤0.030%, balance of Fe and unavoidable impurities.