How to cut a cast -iron pipe with a corner grinder. Change of metal sewage to plastic at home

Cast iron cutting: corner grinder, pipelines, gas: equipment and features

During the repair, many people try to replace all obsolete communications at once. It turns out that it is most difficult to work with sewer cast iron pipes that need to be dismantled. They used to be connected by cement, sulfur or aluminum. It turns out that the system was carried out for centuries. But then the end of the century came up. And at the same time, complex work begins.

At first glance, it may seem that removing cast.Iron pipes is very easy. But here you need to work wisely. After all, having put too much effort, you can damage the riser, which unites several apartments at once. In this case, the anger of the neighbors is inevitable. Costs, time and a lot of work will begin.

Before starting the dismantling of an old cast.Iron pipe, you need to familiarize yourself with some rules:

  • Turn off the water supply in the house;
  • Remove the hose from the drain tank on the toilet;
  • Remove the toilet carefully;
  • Take out all devices and items from the premises that can interfere with the performance of work;
  • Cast iron. Fragile material. Pipes that are far from the riser can be broken with a hammer;
  • Removal of pipes that directly approach the riser;
  • Cuffs are installed on the bell. First, the bell is cleaned of lubricants.

Device and the capabilities of the corner grinder

The electrical appliance angular grinder is used for grinding, polishing and stripping surfaces, welds and edges. The technique is effective when cutting different materials and the manufacture of products from metals, stones, brick and concrete. The development of technologies of artificial diamonds made it possible to turn a corner grinder into a universal cutting machine. Now their performance is regulated by GOST R IEC60745-2-3-2011 and is checked in laboratories.

In general, the device in the corner grinder is as follows:

  • The rotation of the engine rotor is provided by an electric motor with a control unit and a current.Supply cable.
  • A gear and fan is installed on the shaft. The mechanism is hooked with the led gear mounted on the leading spindle. The latter and rotates the working tool. Disk or stone.

By constructive execution, one- and two-handed corner grinders are distinguished:

  • One.Handed tools. There is no main handle, have a mass of up to 2.5 kg, circle diameter 100, 115 and 125 mm.
  • Two.Handed tools. There is a main and additional handle, the diameter of the circle varies in the range from 125 to 230 mm, the mass of cars 2.5-6 kg.

Gas cutting

Gas acid cutting is effective, but limited to metal thickness. If you need to improve the quality of the cut, then you should look towards cutting cast iron with an oxygen-fluis.

For reference: cast iron. An alloy of iron, which contains not 2.15% of carbon.

An example of cutting cast iron by a supersonic cutter Terminator 220:

Quite suitable even for work under water.

The mobile installations of thermal cutter have proven themselves well. For example, the simplest 2M model (less than 5 kg) cuts cast iron (without the introduction of a burner into a cut cavity) by 150 mm. Information from the developer:

Purpose: manual cutting of high.Carbon and highly alloy steels, cast iron, non.Ferrous metals and their alloys, concrete and reinforced concrete, composite and other materials. The principle of cutting is based on a destructive effect on the material of the high.Temperature supersonic stream of combustion products of liquid hydrocarbon fuel (kerosene, diesel fuel) in oxygen. Areas of application: disposal of objects and metal structures, emergency rescue operations, eliminating the consequences of emergency situations, metallurgical production, construction, transport, etc.P.

Oxygen-digging cutting. Oxygen spear is a steel tube through which oxygen is passed. The working end of the oxygen spear is heated to 1350 ° C (for example, a welding burner), then the oxygen is compressed, which is ignited at the end of the spear reaches a temperature of 2000 ° C. To increase the power of the spear inside the tube, placed a steel rod.

Castling plasma is the most productive option, but it is the most expensive.

cast, iron, pipe, corner, grinder, metal

During the repair, many people try to replace all obsolete communications at once. It turns out that it is most difficult to work with sewer cast iron pipes that need to be dismantled. They used to be connected by cement, sulfur or aluminum. It turns out that the system was carried out for centuries. But then the end of the century came up. And at the same time, complex work begins.

At first glance, it may seem that removing cast.Iron pipes is very easy. But here you need to work wisely. After all, having put too much effort, you can damage the riser, which unites several apartments at once. In this case, the anger of the neighbors is inevitable. Costs, time and a lot of work will begin.

Before starting the dismantling of an old cast.Iron pipe, you need to familiarize yourself with some rules:

  • Turn off the water supply in the house;
  • Remove the hose from the drain tank on the toilet;
  • Remove the toilet carefully;
  • Take out all devices and items from the premises that can interfere with the performance of work;
  • Cast iron. Fragile material. Pipes that are far from the riser can be broken with a hammer;
  • Removal of pipes that directly approach the riser;
  • Cuffs are installed on the bell. First, the bell is cleaned of lubricants.

Angle.Grinding machine

It works quickly and comfortably, but not without minuses with a corner grinder. For example, she cuts only in a straight line. An attempt to make a curly cut will lead to a “snack” of a disk, its breakdown, a possible user injury. Therefore, the machine is used for cutting in a straight line. Another minus. The fire hazard of the method (abrasive disk metal = sparking). Before work, you will have to put on glasses, protection on your face and hands.

cast, iron, pipe, corner, grinder, metal

Cutting more efficiently than a jigsaw around, so more often users choose a noisy corner grinder. When buying a cut.Out circle, prefer products on a bakelite bunch, because they are an order of magnitude stronger than ceramic analogues.

How to hold a corner grinder correctly

Many have a corner grinder, but most people do not know how to use it correctly and how to keep it. This leads not only to marriage in work, but also to severe injuries. Corner grinder is a rather dangerous power tool.

The circle should be installed by the pattern up and clamped by a special nut.

A person with the leading right hand holds an angular grinding of the handle with his right hand. In this case, the circle should be located on the left side of the machine, and the protective casing should close it on top. The rotation is so that during cutting sparks fly to a worker. If the corner grinder jams the circle and the corner grinder will break out of the hands, then it will not go to the cutter, but in the opposite direction.

The left hand holds the car by the handle, which is wrapped in a threaded hole on the case. There are somewhat for special cases of use, but the right position of the handle is only the upper.

This position of the machine requires the use of protective equipment. To protect the eyes and open part of the face, these are protective glasses, and even better. A protective mask. To protect the open parts of the body from sparks and small fragments during cutting, it is necessary to put on a suit made of dense material.

Dismantling instructions

Destruction of the joints with a burner

If the joints of a cast.Iron pipeline are fastened with gray, this complicates the task of dismantling. However, we have some tips on how to make out the cast.Iron pipes of the sewage system in this case. Like any chemical substance, sulfur is destroyed with certain influences, namely, with prolonged heating with an open flame. High temperatures make it viscous and plastic, so that the removal of the substance from the surface becomes simple.

To dismantle the pipeline connected with sulfur, prepare a hammer and chisel, as well as a gas burner for heating. By the way, the burner can be replaced with a soldering lamp.

cast, iron, pipe, corner, grinder, metal

When the pipeline is heated with a lamp or burner into the surrounding space, a harmful gas will be released. Sulfuries. In addition, open fire is also a danger. Therefore, measures to protect life, health and environment are required. Warm heating operations can last several hours so that the combustion products do not harm light, you will need a gas mask, and to prevent accidental fire and other interior elements, a protective screen of metal or asbestos is suitable.

How to Cut Cast Iron Pipe [Learn how to cut, remove, and replace cast iron sewer pipe with PVC]

Destroying joints without a burner

If you use the burner, we offer to familiarize yourself with the video presented below.

Dismantling instructions

It is advisable to start dismantling with the analysis of pipes located at a distance from the riser. This is not difficult and problems most likely will not arise if a chisel and a hammer are used, because cast iron is a very fragile metal.

So, consider how to remove the cast.Iron sewer pipe:

cast, iron, pipe, corner, grinder, metal

A hammer break the plots to the cross

  • Next, you need to gradually loosen it inside the riser. You can leave a segment of the pipe connected to the cross, then the operations to destroy the crosses will simplify. Some experts, on the contrary, remove cast.Iron pipes to the maximum, extremely exposing the compounds.
  • Put on protective agents and closing furniture with screens, you should proceed to heating the sulfur. The work will go faster if two people participate in the dismantling: one pays the joints with a soldering lamp or gas burner, and the second with a knife removes the viscous sulfur.
  • Когда устранено большее количество серы с мест стыкования, крестовина извлекается из стояка.

Basic safety regulations

Before cutting a tree, it is necessary to familiarize yourself with the safety regulations before the corner grinder. The main of these rules is as follows:

  • Be sure to use personal protective equipment (protective plastic glasses, fabric gloves), work in overalls.
  • It is strictly forbidden to use disks having defects.
  • It is recommended to hold the corner grinder hard with 2 hands.
  • Constantly ensure that the electric cord is not near the rotating disk.
  • Put an angular grinder only after a complete stop of the cutting element.
  • Do not clean the protective casing.
  • Do not work intoxicated.

You can not use equipment that is not intended for work with angular grinder. Cutting equipment for a disc circuit saw should not be used for the following objective reasons:

  • The corner grinder has a higher rotation speed than the circular saw. The disk is designed for lower speeds, so at high speed it, cracked, can fly apart. Flying fragments can harm health.
  • The tree has a more viscous texture and inclusion in the form of knots, because of this, the teeth enter the material unevenly. If the disk is jammed, the tool can be pulled out of the hands, which is fraught with dangerous injuries.
  • Due to the uneven loads, the equipment is overheated and failure is possible.

Work with a chisel and a hammer

This pair of products will help divide cast iron in an inaccessible place. Dismantling work begins with pipes removed from the riser in places where you do not stick a corner grinder or hacksaw. Since cast iron is a fragile material, it is easily destroyed after point dynamic loads.

A good shock tool has a rubber or polymer nozzle to slightly soften the blow. This is necessary so that the pieces of cast iron do not scatter around, do not get into the riser and do not create a blockage.

The chisel and the hammer work perfectly with the cast iron of the Soviet era, that is, connected by sulfur, aluminum and cement. As you move to the riser of free space for work, as a rule, it becomes larger, so further cast iron can be cut off with a more effective device. As with a corner grinder, when working with a chisel, it is recommended to close the areas of the body into which a cast.Iron fragment can fly off.

The performance of the work is extremely small, but sometimes without them in no way.

Drilling in conditions of industrial

In conditions of industrial production, if necessary, solving the problem, how to drill cast iron, appropriate machines with a working tool with special working surfaces of the corresponding sharpening are used. Must apply cooling liquids to ensure a given operating temperature.

In addition to drilling cast iron, it is imperative to ask a security issue during such works. It should be taken into account the possibility of the presence of a cavity, voids and similar defects in the array of the processed material. This is more often associated with a large amount of carbon in cast iron and a number of other components.

These sudden defects also lead to the fact that when processing the metal, a large amount of finely dispersed crumb and dust is released. Processing methods depend on the type of cast iron, but there are general rules and safety requirements.

Replacing Cast Iron Sewer pipe with PVC (Honest Jardys Plumbing)

As a result, in the course of work, generally accepted protective measures should be performed. Need to protect the respiratory system. Why is it necessary, in addition to the equipment of the place of work ventilated by the hood, to use a respirator or cotton-gauze “petal” for individual protection.

You should also protect your eyes. Safety requirements provide for the presence of protective screens, the use of protective glasses with closed side edges. Work in special work clothes, mittens and headdress.

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