Product details description

Tee forming process

Tee hot compression forming is a larger than the diameter of the tee billet, flattened to about the size of the tee diameter, in the stretching of the branch part of a hole; billet heated, put into the forming die, and in the billet into the stretching of the branch of the die; in the role of pressure billet is radial compression, in the radial compression of the metal to the branch of the process of the flow of the direction of the pipe and in the die under the stretching of the branch pipe formation. The whole process is formed by the radial compression of the billet and the stretching process of the branch pipe part. Unlike the hydraulic expansion tee, the metal of the hot pressed tee stub is compensated by the radial movement of the billet, so it is also called the radial compensation process.

Due to the use of heated and then pressed tees, the tonnage of equipment required for material forming is reduced. The adaptability of the hot pressing tee to the material is wider, suitable for low carbon steel, alloy steel, stainless steel materials; especially large diameter and pipe wall thick tee, usually using this forming process.

A high-pressure tee for oil drilling engineering construction operations, production site, by the tee body, connecting cap, tee lower body, side pipe, high-pressure valve group and pressure control screws, tee body through the connecting cap and its lower tee body below the connection, the tee body side downward sloping welded with the side of the tube connected to the side of the tube, the side of the tube in the middle of the high-pressure valve group is connected to the lower screw holes are equipped with pressure control screws.

This high-pressure tee has a novel structure, the use of flexible and convenient operation, tee manufacturers can use it to reduce the wear and tear of the connecting hose, to extend the service life, reduce production costs, and at the same time can solve the problem of workers working under pressure, which is conducive to production.

Plastic steady flow high-pressure tee using PE raw materials, structural analysis, such products can only be selected on the parting surface in the products of the two axes determined by the central plane, and the use of symmetrical flow, a mould two cavities. The external thread is relatively easy to solve, straight through the part of the core demoulding can also be removed by the traditional method of oblique guide pillar, the key to the products of the third through the internal thread part of the demoulding design, the products of the internal thread pitch of 2mm, a total of 42.5/2 = 21.25 rotations, in order to be the core out of the products.

With the development of new plastic materials and processes, plastic products are more and more widely used for their light weight, good strength and low cost.

The passivation process of carbon steel tee can be specifically divided into many types, commonly divided into wet and dry. Iron oxide formed on ordinary carbon steel continues to oxidise, causing rust to expand and eventually form holes. Carbon steel surfaces can be electroplated with paint or oxidation-resistant metals (e.g., zinc, nickel, and chromium), but, as is well known, this protection is only a thin film. If the protective layer is broken, the steel beneath begins to rust.

The passivation effect of carbon steel tee depends on both the passivation process and the stainless steel stamping elbow material itself, the specific factors affecting the elements contained in the stainless steel stamping elbow, stainless steel metallographic structure, stainless steel processing state. In the constituent elements, chromium, nickel belongs to the passivation of strong elements, iron passivation is second, therefore, the higher the content of chromium and nickel, the stronger the passivation of stainless steel.

Austenitic, ferritic type stainless steel stamping elbow has a more uniform organisation, can be passivated better, martensitic type stainless steel after heat treatment, its metallurgical organisation is multiphase organisation, and thus passivation is not strong. Carbon steel tee by machining the surface of the smooth passivation of the better, casting, sandblasting and other workpiece surface rough, not conducive to passivation. Carbon steel tee will not produce corrosion, pitting, rust or wear. Stainless steel is also one of the materials in the metal materials for construction.

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