Stamping: products with special requirements are still in use. Sanitary adopt stamping elbow elbow tube outer diameter equal to, the use of direct compression in a mold press forming. Before stamping, tube placed in the lower mold, the inner core and the end of the mold into the tube, the upper die downward movement began repression by the constraints of the outer mold and the inner mold forming the supporting role of the elbow. Push hot forming: hot push sanitary elbow forming process is the use of special sanitary elbow pushing machine, mandrel and the heating device, so that the blank in the mold sets in pushing machine, driven forward movement in the movement is heated, expanded diameter and bending process. Sanitary elbow push hot deformation characteristics are based on plastic deformation of the metal material around the tube to determine the law of constant volume diameter, using elbow tube diameter smaller than the diameter of the core mold by controlling the deformation of the blank, at the inner arc metal flow is compressed, the compensation due to increasing the diameter of the other parts of thinning, to thereby obtain a uniform thickness of the elbow. Push hot sanitary elbow forming process has a beautiful appearance, uniform thickness and continuous operation, suitable for mass production characteristics, and thus become carbon steel, alloy steel elbow main forming methods, and are also used in some of the specifications of stainless steel Sanitary elbow forming. Forming process with intermediate or high-frequency heating induction heating (heating coil for multi-turn or single lap), flame heating and reverberatory furnace heating, what kind of heating energy, as forming the product requirements and circumstances. Stamping sanitary elbow was first used in mass production of seamless elbow forming process, at present, the common specifications of sanitary elbow heat production has been pushed France or replaced by other forming process, but in some specifications Elbow due to less production volume, thickness too thick or too thin. Compared with the hot stamping process to push, press molding appearance quality than the former; stamping elbow outside the arc during the molding in a stretched state, no other parts of the excess metal to compensate, so at the outer arc thinning wall thickness of about 10% or so. However, for single-piece production and low cost, it is used for stamping elbow process small quantities, thick-walled elbow manufacturing. Stamping elbow of cold stamping and hot stamping are two, usually based on material properties and equipment, the ability to choose cold stamping or hot stamping. Elbow cold extrusion forming process is to use a dedicated elbow forming machine, the tube into the outer mold, the upper and lower mold clamping after putter, driven along the inner tube and the outer mold mold reserved gap forming process to complete the movement. Wenzhou Anbo Light Industry Machinery Co., Ltd. Tel :0577 -86,828,771 Fax 577 -86812870 Address: Wenzhou City Industrial Zone, Shacheng seventy-three Mobile: 13868846909/13587873463 Contact: Shao Wentao URL: http://www.anbomachinery.com