Introduction to NDT:

On the premise of not damaging the test piece, the method of checking and testing the structure, property and state of the internal and surface of the test piece by means of physical or chemical methods and with the help of technology and equipment. Nondestructive testing technology includes: ray, ultrasonic, magnetic powder, penetration, eddy current, magnetic flux leakage, acoustic emission, phased array, guided wave, infrared, etc.

The application of NDT technology runs through all aspects of equipment integrated management, including:

The application objects include: steel rolling, smelting equipment, lifting machinery, power plant equipment, special equipment, building steel structure, high-strength bolts and other equipment. The details are as follows:

♦ Rolling equipment: frame, roller table, transmission shaft, roll (new, in service, reformed)

♦ Smelting equipment: blast furnace, hot blast stove, gravity dust removal device, ladle and rotary table, etc

♦ Lifting machinery: crane, spreader, wire rope, drum, port machinery

♦ Power plant equipment: Fan bolt, rotor, bearing bush, turbine components

♦Special equipment: pressure vessel, pressure pipe

♦ Building steel structure: Construction and installation weld of steel beam and steel column

♦ High strength bolt: high strength bolt for steel structure

♦ Others: UOE mold, all kinds of shaft head, gear, motor vehicle assembly, roll ring

NDT items include:

Penetrant testing, magnetic particle testing and ultrasonic testing, etc., such as:

Rolling equipment: frame, roller table, transmission shaft;

Smelting equipment: blast furnace, hot blast stove, gravity dust removal device;

Lifting machinery: crane, spreader, drum, port machinery;

Power plant equipment: Fan bolts, rotor, bearing bush, turbine components;

Special equipment: pressure vessel, pressure pipe;

Building steel structure: Construction and installation weld of steel beam and steel column;

High strength bolt: high strength bolt for steel structure;

Others: all kinds of shaft head, gear, motor vehicle assembly, roll ring.

Nondestructive testing plays an irreplaceable role in defect detection, tracking and evaluation of roll, mill housing and main shaft key components, lifting machinery steel structure and lifting fixture, large casting and forging and closed structure defect detection. Through non-destructive testing, product quality control, manufacturing process improvement, equipment safety hidden trouble finding and predictive maintenance are realized, and good economic benefits can be created for customers.