Industry Knowledge

Metal corrosion problems are widespread in many areas of the national economy, such as oil and gas, petrochemical, transportation, machinery manufacturing, etc. It can be said that corrosion problems exist wherever metal materials are used. Metal materials ar......

The mechanical properties of capillary metal materials refer to the behavior of metal materials under external loading or under the combined action of load and environmental factors (temperature, medium and loading rate). Common metal mechanical properties ar......

Stainless steel wire is a kind of silk products with different specifications and models made of stainless steel. The common stainless steel wires with good corrosion resistance and high cost performance are 304 and 316 stainless steel wires.The types of stain......

Rockwell hardnessUse diamond cone or quenched steel ball indenter to press the indenter into the material surface under the action of test pressure F. After holding for a specified time, remove the main test force and maintain the initial test force. Calculate......

Surface treatment is a process that uses the marginal new technologies of modern physics, chemistry, metallurgy, heat treatment and other disciplines to change the condition and properties of the surface of parts to meet the predetermined performance requireme......

Tension is a simple mechanical property test. Within the test gauge, the stress is uniform, the measurement of stress-strain and its performance indexes is stable, reliable and convenient for theoretical calculation. Through the tensile test, the most basic me......

Directly welded pipes: the use of small size model can avoid stress corrosion, hot cracks and deformation, and the welding current is 20% lower than that of high carbon steel. In order to ensure the ignition of the electric arc, the DC reverse connection is a......