Bonded with different parts or between a pipe must not leak. To this end, adjoining edges are deformed. The technology is called by rolling - increasing edge of the pipe at an angle. This deformation portion parts. Tell us how your own razvaltsevat copper pipe.
Features rolling, depending on the technological processes fastening pipes
Which option to choose depends on the flaring process bonding copper pipes with each other or with the details of structure:
- If you plan to welding, the hole is increased to the required size. The inner diameter of the tube should exceed the outer diameter of the connected part 0.1 - 0.2 mm. The gap between them is filled with tin solder or other. This will ensure reliable isolation.
- If the elements of couplers, the hole is not only increasing, but also make the mouth tilted 45ยบ. The increased contact area will increase the reliability of the connection.
The steps of rolling are the same, regardless of the technology fastening elements.
The algorithm
How to make the rolling of copper tubes with your hands? Implement actions necessary in the following sequence:
It is necessary to cut the pipe perpendicularly, the edge should be smooth.
- The outer zone of the cut and the edges it is important to thoroughly clean. If cutting deformation has occurred, it is necessary to restore the shape of the pipe.
- The next step - fastening element in the matrix of the special tool for increasing the diameter or vise. 5 mm end items must be left free. If you intend to mount in fitting, prior to fixation element to set the crimp nut.
- The hole must be placed a suitable size expansion cone and screw it. After such action of the copper material is stretched, and the details will end gradually taking shape of a cone.
- The next step - removing the dilator and the removal of the processed element holder.
This is followed by an inspection socket obtained. If there are bumps, scratches, mikroskoly, they need to be cleaned. After flaring tube must wait until it has cooled to room temperature, and only then begin to bond.
Important! Sometimes, after expanding the treated zone tube cracks, the edges are bevelled relative to the axis. Then the treated region will have to cut and start over.
Devices and instruments
To make flaring at home need to prepare the tools. increase the margin of copper pipe is available without a person experiences hand, pulling it to the conical disc. The disadvantage of this method of treatment: get the socket with the specified dimensions will be difficult, because the master puts uneven effort. This distorts the beading detail. Defect can be avoided by using special tools.
The construction market offers expanding the diameter of the articles made of copper devices with manual or electric drive. Power used for razvaltsovyvaniya pipeline for other purposes. For example, the bending angle. All devices operate on the principle of plastic deformation, that maintains the smoothness of the inner surfaces of the pipe during the expansion diameter of the product.
Template
This is a simple device - billet in the form of a cone. It is made from any metal alloy that is harder than copper. The main advantage of a template - a small price. Furthermore, it is easy to use. But such a method of increasing the diameter of the product is often accompanied by discontinuities walls.
expander
This hand-held device, wherein the increase in diameter copper pipe occurs as a result of force. The apparatus consists of two levers and the sliding cone onto which the handling unit. When pressed on the handle expander elements of the expander in different directions, the copper product is stretched. This inexpensive device does not guarantee quality results. When using it impossible to control the thickness of the tube at the thinner areas may be gusts.
Flaring products expanders advisable to carry out in two steps. Initially slightly extend region, and then turn the instrument to stretch the tube to the required diameter.
cone razvaltsovschik
It represents a single set of: the matrix and razvaltsovschik. The first element 2 is a plate with rounded notches standard size pipe sections. Razvaltsovschik consists of the following elements:
- housing;
- extender;
- spindle.
When the spindle begins to rotate, the expander is screwed into the hole and creates a product funnel.
Mechanical and electrical tools
The mechanical device similar to the cone, only the working element is a set of rollers. They operate without stretching and rolling the pipe wall uniformly. This technique ensures uniform material thickness throughout the treated area. Due to this internal surface of the tube during rolling are smooth and the mouth is obtained and neat symmetrical.
Electrical apparatus characterized by the presence of a mechanical actuator. It significantly reduces the time of implementation of the process and does not need to apply force.
Important! Master, standing in front of the instrument choice for rolling, it is necessary to determine its necessity. To repair a fairly simple device with a simple set of nozzles. Specialist, paves and repairs pipes, it is advisable to buy a professional set.
TIPS FOR process
On how well the work is carried out depends on the tightness, reliability of fastening. To make your own flare and get a good result, you need experience. In the absence of skills before exercise assembling copper tubing, it is expedient preliminarily to practice on pipes of different diameters.
To beading was quality, it should perform in line with the recommendations:
- Before starting the process must be a visual way to identify the presence of burrs, roughness on the product. dirt should be removed from the inner and outer surface of the tube. Flaring make only products with a round cross-section.
- The outer surface of the copper parts before starting the process must be carefully brushed to remove dust, debris.
- It is important to tightly secure the product in the holder. If this be taken carelessly, the tube will slide in a matrix that does not allow to make high-quality processing.
- If the copper element edges extend manually cone unacceptable dent. Pig should be gently screwed into the hole. Then the force will be evenly distributed and can avoid ruptures the wall articles.
- In the process, it is important to make sure that the socket is not twisted relative to the centerline. If this happens, the connection will not provide complete isolation, high wear resistance.
- When installing the rolling element in the matrix of the device it is important to select the size of the holes corresponding to the diameter of the copper tube.
With proper quality will flare bell for a durable tight connection.
