Impact test of metal parts repaired by laser cladding

In machinery and equipment industries such as stone mining, chemical industry, metallurgy, electric power, cement, etc., gas turbine rotor journals and blades, roll journals, steel mill archways, etc. will age and damage over time. Since these parts have been subjected to high temperature, high pressure and corrosive media for a long time, coupled with the mechanical stress caused by volume load, most of the damage occurs on the surface or begins on the surface, and the failure mode is mainly fragmentation and cracking, wear or corrosion of internal metal parts, severe to local peeling off.
Therefore, applying laser cladding technology to strengthen the surface properties of parts can effectively extend the service life, and during periodic maintenance, damaged parts can also be remedied through surface remanufacturing technology. Tensile testing of metal parts repaired by laser cladding can determine their impact properties.
Zhongke Inspection Reliability Experiment Center has the mechanical testing capabilities for various laser cladding repaired metal parts, and provides professional impact mechanics 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. Place the notch sample with the specified geometric shape between the two stands of the testing machine, with the notch facing away from the striking surface, hit the sample with a pendulum once, and measure the absorbed energy of the sample.
2. Unless otherwise specified, impact tests are generally conducted at room temperature of 23°C ± 5°C. For impact tests with specified test temperatures, the sample temperature should be conducted within the specified temperature range of ±2°C.

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