Tensile test of laser cladding repaired metal parts

Laser cladding repair technology is a material surface modification technology. It uses a high-power-density laser beam and is controlled by a laser processing system under CNC control to form a very thin micro-melted layer on a designated part of the surface of the substrate. Self-fluxing alloy powders of specific components, such as nickel-based, cobalt-based and iron-based alloys, are added in a preset or synchronous manner, so that they can evenly spread on the surface of the part in a molten state and reach a predetermined thickness, which is in contact with the micro-melted substrate. The metal materials form a good metallurgical bond and have only a small dilution with each other. During the subsequent solidification process, a functional cladding material layer with predetermined special properties is formed on the surface of the part that is completely different from the base body, thus completely changing the surface properties of the material. Ultimately, the surface of the cheap material obtains extremely high wear resistance, corrosion resistance, high temperature resistance and other properties.
Tensile testing of metal parts repaired by laser cladding can determine their tensile properties.
Zhongke Inspection Reliability Experiment Center has the mechanical testing capabilities for various laser cladding repaired metal parts, and provides professional tensile mechanical testing services for laser cladding repaired metal parts.

laser cladding technology is mainly used in a large number of parts that are prone to wear and fatigue, such as transmission couplings, fork heads, intermediate shafts, transmission gears, universal joints, flat head sleeves, roller shafts, flying shears, roll end sleeves, coiler spring seat boxes, gear shafts, reducer casings, etc.

1. The test system uses tensile force to stretch the sample, usually until it breaks, to measure one or several mechanical properties.
2. Unless otherwise specified, the test is generally conducted at room temperature within the range of 10 ℃ ~ 35 ℃. For tests with strict temperature requirements, the test temperature is 23 ℃ ± 5 ℃. The high-temperature tensile test can refer to GB/T 228.2-2015, and the low-temperature tensile test can refer to GB/T 228.3-2019.

GB/T 41477-2022 Test method for mechanical properties of metal parts repaired by laser cladding
GB/T 228.1-2010 Metallic materials - Tensile testing Part 1: Room temperature test method
GB/T 228.2 Metallic Materials Tensile Test Part 2: High Temperature Test Method
GB/T 228.3 Metallic materials - Tensile test Part 3: Low temperature test method
GB/T 229-2020 Metal Materials Charpy Pendulum Impact Test Method
GB/T 3075-2021 Metallic materials - Fatigue testing - Axial force control method
GB/T 29795 Laser Repair Technology Terms and Definitions
GB/T 29796 General technical specifications for laser repair