Welding method for pipe tee 10

Electric welding, gas welding, argon arc welding, CO2 can be used.

The pipe tee is the so-called saddle-shaped weld, such a weld is not welded, I have seen a saddle-shaped automatic welding equipment before, made in Jinan.

Electric welding, gas welding, argon arc welding, CO2 can be welded on the joint part thinner.

The welding of joints of welding tees should adopt the single-sided welding and double-sided forming method. Jump-over tee, the welding torch is mainly pointed at the thick-walled pipe during welding, and the energy of the welding line is strictly controlled to prevent welding deformation. Plug-in tee, the welding torch is mainly biased towards the main pipe, so the energy of the welding line can be larger.

During welding, the welding speed and interlayer temperature should also be controlled to prevent the weld from cooling too quickly.

Leg height. Generally, for fillet welds with full penetration, the general welding leg height is k 1 3*s (workpiece with thin wall thickness), and it is not less than 6 mm.

Control of welding quality.

The verticality error of the welded tee should not be greater than 2L, and 2. In order to prevent (reduce) welding distortion, spot weld supports between the main pipe and the branch pipe, the supports are made of the same or similar material as the base metal, and the electrode is welded with a matching base metal. After the tee welding is completed, the support is removed, and the residual solder joints on the surface of the pipe should be polished and smoothed, if the surface is partially concave, it must be polished and smoothed after repair welding, and the next process can be carried out only after passing the non-destructive test.

The main defects of the joint weld of the welded tee are lack of penetration, cracks, porosity, slag inclusion, etc. The following points should be paid attention to in controlling the quality of welding:

1. Select the correct bevel angle and size;

2. The oil, rust, moisture and other debris in and near the groove before welding must be cleaned up, and the coating should be removed during the welding process;

3. Select the appropriate welding process parameters according to the welding card for welding.

Can pipes be welded directly to each other? For example, tees and elbows.

Kiss! Hello, happy to answer your <>

The pipe fittings can be welded directly, and although the pipe fittings and pipe fittings can be connected by flanges, there are also many direct welding. You think that the flange doesn't need money, and no one will use the flange to connect where you can weld directly. Most of the fittings are welded to each other.

This must be allowed, if a relatively long pipeline line is connected with flanges, then how many flanges are needed. Reducer elbow is a type of reducer joint, which refers to the connection form of the pipe. When one pipe is connected to another pipe, a pipe fitting should be added between the two pipes, and this pipe fitting is called a pipe joint.

If the diameter of the two pipes is the same and they are connected in the same diameter, it is enough to use a straight pipe connector to connect the two pipes directly. If the diameter of the two pipes is not the same, a pipe joint with a large diameter at one end and a small end at the other end should be added between the two pipes, and this pipe joint is called a reducing joint. There are two forms of reducer joints, which are referred to as reducer joints in straight pipe connections, and when they are connected in turns, reducer joints should be connected in a bent shape, and the reducer joints are called reducer elbows.

This joint can be threaded or welded. When threaded, the connected pipe fittings and connectors must be threaded, and threads need to be processed, which is used when the pipeline needs to be disassembled and assembled. Soldering is a permanent connection and cannot be disassembled.

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Do you have any other questions?

The welding steps are as follows:

Step 1: Firstly, use sheet metal software to find the data of equal diameter tee;

Step 2: Cut and polish the main branch pipe;

Step 3: Use the equilateral triangular method to determine the verticality during installation, and weld after determining the position.

Tee refers to a pipe joint with three openings. Tees are widely used in pipeline networks for transporting liquids and gases. Due to the different conveying mediums, the materials of the tee pipe are divided into: cast iron, cast steel, cast copper, cast aluminum, plastic, glass, etc.

First of all, the sheet metal software is used to find out the data of the equal diameter tee, the main branch pipe is cut and polished, the equilateral triangular method is used to determine the vertical during installation, and the position is determined and welded.

Cut-out, corner-cutting, spot welding, fixing, full welding.

Pipe tee welding will be larger than the diameter of the tee, flatten the size of about the diameter of the tee, and open a hole in the part of the stretched branch pipe; The tube blank is heated, put into the forming die, and the punch of the stretched branch pipe is loaded into the tube blank; Under the action of pressure, the tube blank is radially compressed, and in the process of radial compression, the metal flows in the direction of the branch pipe and forms a branch pipe under the stretching of the die.

The whole process is formed by radial compression of the tube blank and the stretching process of the branch parts. Different from the hydraulic bulging tee, the metal of the hot-pressed tee branch is compensated by the radial movement of the tube blank, so it is also called the radial compensation process.

Due to the use of heated pressed tees, the tonnage of equipment required for material forming is reduced. The hot-pressed tee has a wide adaptability to the material, and is suitable for the materials of low carbon steel, alloy steel and stainless steel; In particular, tees with large diameters and thicker walls are usually formed by this process.

First of all, I don't know what diameter and pressure PE pipe you are referring to, whether it is a water pipe for home improvement or other purposes. Generally, the small-diameter PE pipe DN16 DN90 (outer diameter 16mm 90mm) can be manually welded with ordinary PE connectors, please feel free to use. Large-diameter PE pipes DN90 and DN300 are welded using fusion splicers or electrofusion connectors.

This is mainly to reduce the cost or difficulty of the connection. In order to ensure the welding quality of large-diameter PE pipes, special equipment needs to be used, which is mainly to ensure that it is melted at a certain temperature for a certain time. Larger PE pipes are generally not welded but mechanically connected.

Solder a DN300 on a DN200Staking out the plug by hand on DN200, Fig.

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It can be considered in this way, set the radius of the larger pipe is a, the radius of the smaller pipe is b, find a white iron sheet, its length and width are the perimeter of the small tube, that is, 2 pi b, this white iron sheet is divided into 24 equal parts along the length direction, that is, 23 vertical lines are obtained, this problem is transformed into the length of these 23 lines, after the length is calculated, you can cut out the lofting drawing, enclose this lofting drawing on the small tube, draw the cutting line on the line, if the accuracy is very high, you can increase the equal fraction:

The length of the nth line: h a*(1-sqrt(1-(b*sin(15*n) a) 2)).

Note: sqrt is the square root operator.

n=0 24, where three are equal to zero.

Tee pipe fittings are a kind of pipe connectors, which are used at the main pipeline to branch pipes, and are divided into equal diameter and different diameter.

Classified according to pipe diameter.

1. Same diameter tee: the main pipe and branch pipe have the same diameter.

2. Reducing tee: the diameter of the branch pipe is smaller than the diameter of the main pipe.

Classified according to the form of docking.

1. Butt welded tee: it is the tee pipe fittings welded after docking with the connecting pipe fittings.

2. Socket tee: It is a three-way pipe fitting that is welded or welded after inserting the connecting pipe fittings into each end of the tee.

3. Ferrule tee: It is a tee fittings that are compressed after each end is a ferrule joint, and the pipe fittings are inserted and then tightened.

4. Threaded tee: a tee pipe fitting that connects pipe fittings in a threaded manner.

Categorized by material.

It can be divided into stainless steel tee, carbon steel tee, copper tee, PVC tee, ductile iron tee, etc.

Classified according to the form of branch pipes.

1. Tee: It is the tee fittings of the vertical main pipe of the branch pipe.

2. Oblique tee: It is a tee pipe fitting with a certain angle between the branch pipe and the main pipe.

Look at what kind of tee, the simplest is to process a hole in the middle of a straight pipe (on the central axis of the pipe,) on the top of the hole vertically weld a small straight pipe, this straight pipe one end according to the outer diameter of the pipe processing half of the inner hole of the garden, two pipes cross butt welding.

It's too vague to say. It's not clear what you're trying to do. Is it a straight pipe to make tee fittings?