If it is a truck drive shaft, first determine steel, it is recommended: fine selection of some of the shaft 40Cr, 40Cr, 40MnB, 40MnVB, thicker shaft selection 40CrNiMo, 42CrMo and other low carbon steel; shaft generally consists of two parts: First, solid or hollow mandrel thick-walled tube; Second splined shaft and universal joint connection. Real mandrel and spline shaft is generally processed into a material made of steel, but also be welded together. Heat treatment axis is: the whole roll axis is annealed or normalized (after the bar containing Mo, V, Ti cold steel annealing furnace generally after a certain time :840-860 heating degree, get a ferrite + pearlite ; low alloy content of the steel is generally normalizing :840-860-degree heat after a certain time air-cooled, get ferrite pearlite), to obtain better cutting performance, the overall quenching and tempering heat treatment processing (generally: 840 -860 degrees heating oil quenched after a certain time, then the 550-650 degree heat tempering, tempered sorbite organization), get strength, toughness, ductility have better mechanical properties (torsion, bending, no brittle fracture), and then finishing its spline, spline case lower hardness (about HRC35-40) does not wear, but also on the secondary heat treatment to strengthen the spline, the current multi-frequency induction heat treatment get hidden martensite, spline surface hardness can reach HRC58-62, with high wear life. Luoyang, Ltd. specializes in easy to get the drive shaft drive shaft, cardan shaft research, development, design and manufacturing, the company uses advanced computer design technology, sophisticated CNC machining equipment, a full range of screen testing means, a complete Microsoft systems management, creating a reliable product strength. Www.lyyide.com drive shaft looking to buy and easy to get, easy to get the best quality shaft. National service telephone :400 -0813-666!