The quenching and tempering treatment of the coupling is quenchingandtempering: the heat treatment combined with quenching and high temperature tempering is generally called quenching and tempering treatment. Quenching and tempering is widely used in a variety of important structural parts, especially those that work under alternating loads, such as connecting rods, bolts, gears and shafts.
After quenching and tempering treatment, the tempered sorbite structure is obtained, and its mechanical properties are superior to the normal-fired sorbite structure of the same hardness. Its hardness depends on the high temperature tempering temperature and is related to the tempering stability of the steel and the cross-sectional dimensions of the workpiece, generally between HB200 and 350.
Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing methods, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but changes the microstructure inside the workpiece or changes the chemical composition of the surface of the workpiece. , to give or improve the performance of the workpiece.
It is characterized by improving the intrinsic quality of the workpiece, which is generally not visible to the naked eye. In order to make the metal workpiece have the required mechanical properties, physical properties and chemical properties, in addition to rational selection of materials and various forming processes, the heat treatment process Often it is essential.
Steel is the most widely used material in the machinery industry. The microstructure of steel is complex and can be controlled by heat treatment. Therefore, the heat treatment of steel is the main content of metal heat treatment. In addition, aluminum, copper, magnesium, titanium, and the like can also be modified by heat treatment to obtain different mechanical properties, physical properties, and chemical properties.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
45 Degree Elbow and 90 ° elbow , 90 Degree Elbow forming a right angle and 45 degrees is an obtuse angle. Two 45-degree elbows can not be welded into a 90-degree bend to use, because the stress concentration area is the elbow pipe, expansion and most of the stress deformation during cooling are released at the elbow. Also weld itself to be the weak link, fatigue deformation will soon cause cracking damage, which planted a lot of hidden dangers, so do not at immediate convenience, eventually leading to huge losses.
Product Name:45 Degree Elbow
Size:DN10-DN2500
Materials: A234 WBP-WP1-WP12-WP11, A403 WP 304-304L-316-316L, A402 WPL3-WPL 6,A860 WPHY 42-46-52-60-65-70,PG370,C20
Thickness: 2mm-100mm
Standard:GB/ANSI/ GOST/ JIS/ DIN
Crafts: Butt, Push System, Simmer
Connection: Welding
Package: Wooden boxes,Wooden pallets,According to customer requirements.
Brand Name: HY
Place of Origin: China (Mainland)
Certification: ISO.UKS.SGS.BV
Application: Chemical, Water, Oil and gas, Electricity
45 Degree Elbow
45 Degree Elbow,45 Degree Elbow Fitting ,45 Degree Pipe Elbow,Steel 45 Degree Elbow
CANGZHOU HAOYUAN PIPE FITTINGS MFG CO.,LTD , https://www.pipefitting-china.com