As the name implies, the square tube is a square form of the tube type, a lot of material material can form a square tube body, it medium, what to do, and where to use, most square tube is a multi square tube with steel tube, it is a form of address of square pipe, that is, the steel pipe with equal length. It is made of strip steel through process treatment. Usually the strip is unwrapped, leveled, curled, welded to form a circular tube, then rolled from a circular tube to a square tube and then cut into a desired length. It is generally 50 per pack.
The square tube has seamless and welded joints. The seamless square tube is made by extruding seamless tube.
Performance index analysis of 1. square tubes - plasticity
Plasticity refers to the ability of metal materials to produce plastic deformation (permanent deformation) without damage under load.
Analysis of the performance index of 2. square tubes - hardness
Hardness is a pointer to measure the hardness and hardness of metallic materials. At present, the most commonly used method of measuring hardness is the pressure entry hardness method. It is pressed into the surface of the metal material under a certain load with a certain geometry, and the hardness value of the material is measured according to the degree of pressure.
The usual methods include Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vivtorinox hardness (HV).
Analysis of the performance index of 3. square tubes - fatigue
The strength, plasticity and hardness discussed above are all mechanical properties of metal under static load. In fact, many machine parts work under cyclic load. Under this condition, parts will produce fatigue.
Performance index analysis of 4. square tubes - impact toughness
The load acting on a machine at a great speed is called impact load. The ability of metal to resist failure under impact load is called impact toughness.
Performance index analysis of 5. square tubes - strength
Strength refers to the performance of metal materials subjected to static loading to resist breakage (excessive plastic deformation or fracture). The strength of load is divided into tensile strength, compressive strength, bending strength, shear strength and so on, as the loading mode has the form of tensile, compression, bending and shearing. There is a certain connection between various intensities. Generally speaking, tensile strength is used as the basic strength indicator.
The number is mostly structural square tube, decorative square tube, building square tube and so on.