The quality of tube cap is guaranteed after anneal

The quality of tube cap is guaranteed after annealing

The cap material in the market is divided into three commonly used carbon steel, alloy steel, stainless steel and so on. The shape of pipe cap is divided into: butterfly pipe cap, ball cap and so on. Pipe cap is mainly installed at one end of the pipeline, mainly used in petroleum, chemical, nuclear power, machinery and other pipeline installation. Tube caps are divided into various types according to the pressure grade, such as Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS STD and XS are commonly used.

Pay attention to improve the hot forging working environment of the pipe cap. The die life is shorter than that of other temperature ranges, but it has greater freedom and lower cost. The blank in cold forging will produce deformation and work hardening, so that the forging die bears high load, therefore, it is necessary to use high strength forging die and hard lubrication film treatment method to prevent wear and bonding.

In order to prevent the crack of the tube cap billet, the intermediate annealing is carried out when necessary to ensure the required deformation capacity. In order to maintain good lubrication, the tube cap can be phosphating the blank. In continuous machining with rod and rod, the section cannot be lubricated at present, and the possibility of using phosphating lubrication method is being studied. According to the moving mode of billet, forging can be divided into free forging, upsetting, extrusion, die forging, closed die forging, closed upsetting forging.