steel tube

    Spheroidizing annealing is a heat treatment process for spheroidizing carbides in steel to obtain granular pearlite.     Process: Heating to 20 ~ 30 ℃ above Ac1, the holding time should not be too long, generally 2 ~ 4h is suitable, and the cooling method is usually furnace cooling, or a long time isothermal at about 20 ℃ below Ar1.     It is mainly used for eutectoid steel and hypereutectoid steel, such as carbon tool steel, alloy tool steel, bearing steel, etc. The microstructure of hypereutectoid steel after rolling and forging is lamellar pearlite and reticulated cementite. This structure is hard and brittle, not only difficult to cut, but also easy to deform and crack in the subsequent quenching process. . Spheroidized annealing results in spherical pearlite. In spherical pearlite, fine cementite particles are spherical and dispersed on the ferrite substrate. Compared with lamellar pearlite, spherical pearlite is not only harder and easier to c...

　　According to the technical requirements of different manufacturers, steel length measuring system has a variety of methods. Mainly as follows: 　　1, grating length measurement 　　The basic principle is: set two fixed-length steel grating in the outer ends of each pipe, use rodless cylinder drive the grating approaching both ends of the steel , achieved by optical interference phenomenon to measure the length of the pipe. 　　Characterization: high accuracy. However, grating is expensive and difficult to maintain,and the impact of dust and vibration is sensitive to the venue. 　　2, the camera length measurement. 　　Camera length measurement is achieved by using image processing. The principle is equidistant installed in a steel roller conveyor section on a series of photoelectric switches, plus light and camera on the other section. When the pipe goes through this area, pipe length can be determined by the camera taking an image on a screen at a position based on a photoelectric s...

    Steel tube is used in a variety of structural and industrial applications, such as automobile transport, architecture, and construction. These steel tubes are made of different steel structures, from stainless steel, carbon, zinc or soft steel, depending on the application requirements.     Steel tubing is divided into two classes: mechanical and structural, depending on its design. So what is the difference between mechanical and structural steel tube? Below are some points to consider while differentiating the two types of steel tubing. The comparison is made on the basis of application, specification, and shape.     Comparison between mechanical and structural steel tube     Application: Mechanical tubing is used in low stress and light gauge structural applications. These applications include conveyor belt components, solar panel supports, greenhouse structures, kitchens and restaurants, hospitals and medical equipment, and various t...