How to process PVC pipes, how to cut PVC pipes

I don't know how big the PVC pipe 2cm you said, I've been doing this for a few years, I haven't measured it like this, don't laugh at it, I think you're talking about the PVC insulated flame retardant electrical sleeve (PVC threading pipe, used to thread wires) Its specifications are: 16 20 25 32 40 50 63 You should have a spring there when you buy it, and the special one is the cold bending method you say, and the construction site is all like this, but it takes a little bit of technology to bend well, and it is absolutely different from the bending that has not been done. That is to say, it depends on the quality and technology of the tube, and there are not many on the market, which depends on what you are using this shelf for. Strict, no?

Long-term contact with PVC raw materials and PVC pipes and fittings does not hurt, otherwise I would have hung up - +

PVC is non-toxic, but now often used with the lead stabilizer is toxic, generally speaking, there is no problem to do a good job of protective measures, in addition to PVC processing and manufacturing often have relatively large dust, which is not a good thing.

I've never seen anything so thick, isn't it 2mm?If you want to resist pressure well, you can use the water supply pipe to bake with an alcohol lamp, and then bend it, and it will not be harmful if you touch it often

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PVC pipe is a popular material, this material needs to be cut if the length does not meet the requirements of use. So, how do you cut PVC pipes?

How to cut pvc pipes.

PVC pipes can be cut with a laser or with a knife, and many people in the family will choose to use a knife to cut PVC pipes. Prepare the cutter to match the size of the pipe, then mark the length to be cut on the PVC pipe and place it on the knife holder. Finally, press down on the cutter handle and the cut is complete.

What to pay attention to when using PVC pipes.

1. For PVC pipes, if the construction is not recommended for a short time, this is to prevent the pipe body from being exposed to sunlight for a long time, so as to avoid it aging and other phenomena, it is best to use a shading net to cover the pipe body.

2. When the pipeline is installed, we must pay attention to relevant protective measures, such as paying attention to the coverage of its nozzle, so as to prevent some small animals or insects from entering the inside of the pipeline, thus affecting its normal use.

3. Before the pressure test of the pipeline, it is necessary to install the exhaust valve at its beginning, highest point and end, but it is necessary to pay attention to the size, which must be controlled within 500m. In addition, when performing the pressure test, it is necessary to increase the pressure slowly, not too quickly, and at the same time, it is necessary to continuously exhaust in order to achieve the use effect.

PVC drain pipe disadvantages.

1. Although there are many advantages of PVC drainage pipes, they are prone to aging after a long time, especially for pipe fittings used outdoors, because they will be irradiated by strong light, so they are easy to become brittle and age, which has a great impact on its service life.

2. PVC drainage pipe will be poor in terms of mechanical impact resistance, because its expansion coefficient is relatively large, so we must pay attention to this aspect when using it to avoid rupture.

Article summary: The above is all about how to cut PVC pipes and what to pay attention to when using PVC pipes, I hope it will be helpful to you. If you want to know more about it, please stay tuned to Qeeka Home.

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In house decoration, we often use PVC pipes, which have good pressure resistance and smooth inner walls, so they are also often used as drainage pipes. During installation, we often need to cut the PVC pipe for a seamless installation. How do you cut PVC pipes?

How do you cut PVC pipes?

Prepare a measuring tape and a miter saw, then use a measuring tape to measure the size to be cut, and mark it with a pencil; Then fix the PVC pipe on the base of the miter saw, clamp it and check whether the saw blade is aligned with the mark. Then start the saw blade and place it on the PVC pipe until it is completely cut off. Then release the button to stop the saw blade, and finally lift the saw head, and the cutting work is complete.

Note that when we choose a cutting machine, we must ensure that the cross-section of its incision is flat and can only be used without deformation, otherwise it will affect the flatness of PVC pipe cutting in the later stage.

What should be paid attention to in the construction of PVC pipes.

1. If the construction is in winter, due to the low temperature, it is necessary to standardize the operation during transportation, and it is necessary to handle it gently, and not to pull it hard, so as not to cause damage to the PVC pipe. When storing, place them on a flat ground without sharp objects or gravel to avoid breaking the PVC pipes.

2. If the construction is in winter, it is necessary to take anti-freezing measures for the exposed PVC pipe to avoid freezing and cracking of the PVC pipe.

3. Before construction, the garbage, sand and gravel at the bottom of the ditch need to be cleaned up, and if there is a hard object, it is necessary to dig 10 cm and fill the sand with poor solidity, and then install the pipeline. And before construction, it is necessary to conduct a detailed inspection of all PVC pipes, whether their pipe bodies are broken, whether there is damage at the interface, if cracked, damaged and other phenomena are found, new PVC pipes need to be replaced in time to avoid water leakage and other problems in the future.

4. In the construction, they need to be installed horizontally and vertically, and they cannot be bent at will or tilted. At the junction of the pipe, it is necessary to lay concrete to consolidate the PVC pipe to ensure that the PVC pipe will not loosen and shift in the future.

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PVC (Polyvinyl Chloride, PVC) resin is a thermoplastic polymer polymerized by vinyl chloride monomer (VCM).

The physical energy of PVC, such as molecular weight, crystallinity, and softening point, varies with the polymerization reaction conditions (temperature). PVC resin plastic is made by plasticizing and molding with a variety of additives such as stabilizers, plasticizers, fillers, colorants and modifiers. PVC material has the characteristics of light weight, heat insulation, heat preservation, moisture-proof, flame retardant, and easy construction.

There are many specifications, colors, patterns, and they are highly decorative, and are widely used in production and life. For example, PVC water pipes, PVC plastic doors and windows, as well as plastic toys containing PVC, wires and cables. Due to its harm to the human body, Europe, Japan, South Korea and other countries have imposed restrictions on products using PVC as raw materials.

The outstanding advantages of general PVC resin plastic products are flame retardant, wear-resistant, chemical corrosion-resistant, low gas and water vapor, and good leakage. In addition, comprehensive mechanical energy, product transparency, electrical insulation, heat insulation, sound reduction, shock absorption, is the most superior universal material. The defect is that it is thermally stable and has poor impact resistance, and it is easy to produce brittleness during the use of both hard and soft PVC.

1.Preparation of raw materials (PVC + additives).

2.The mixer mixes and conveys the feeding.

3.Force-feeding.

4.Conical twin-screw extruder.

5.Extrusion dies.

6.Sizing sleeve.

7.Spray vacuum setting box.

8.Soak the cooling water tank.

9.Ink printer (optional as required).

10.Crawler tractor.

11.Knife lifter cutter.

12.Pipe stacking racks.

13.Finished product inspection and packaging.

PVC pipe production line mainly uses PVC (polyvinyl chloride) as the main raw material to produce various PVC pipes. PVC is a thermoplastic resin polymerized by polyethylene (PE) under the action of initiator, which is a homogenizer of polyethylene, which has the characteristics of corrosion resistance, fire resistance and heat resistance, so PVC pipes (UPVC hard polyethylene pipes) are widely used as water pipes for construction, sewer pipes and drainage pipes, cable protection pipes, and other fields.

As one of the most common plastic pipe equipment, PVC pipe equipment is mainly composed of extruder, extruder head mold, vacuum sizing box, traction machine, mixer, cutting machine, etc.

Soft PVC pipes.

The production process is divided into four parts: raw material pretreatment, kneading, granulation, and extrusion pipes

1. The PVC resin, PVC heat stabilizer, plasticizer, lubricant, filler, pigment, etc. used in the pretreatment of raw materials are sieved and grinded.

2. Kneading: Kneading the processed raw materials with an inefficient kneading machine for a long time, so that all kinds of ingredients are evenly dispersed and have a good effect of swelling absorption.

3. Granulation can be done by extrusion or calendering and mixing to granulate the kneading material.

4. Extruded pipes are extruded by extruders according to their discharging methods, which are divided into flat extrusion and vertical drawing method [see Figure (a)] and flat extrusion and flat drawing methods [see Figure (b)] for extruding pipes.

The so-called PVC plastic pipe, in fact, is a kind of PVC as the main component, in addition to adding other components to enhance its heat resistance, toughness, ductility of the building pipe products, the top layer of the plastic pipe is paint, the main component in the middle is PVC, the bottom layer is the back coating adhesive. At present, it is widely used in the construction industry.

The best damage of PVC plastic pipe is not only related to the raw materials used in its production process, but also has a lot to do with its production process.

PVC plastic pipe production line production process: raw material + additives preparation, mixing, conveying and feeding, forced feeding, conical twin screw extruder, extrusion mold, sizing sleeve, spray vacuum setting box, soaking cooling water tank, ink printing machine, crawler tractor, knife lifting, cutting machine, pipe stacking rack, finished product testing and packaging.

This figure shows the production process flow chart of polyvinyl chloride (PVC). Including: water, single pipeline flow chart, additives pipeline flow chart, confluence pipeline instrument flow chart, discharge, ** pipeline instrument flow chart.

The full name is polyvinylchlorid, the main ingredient is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc. It is a kind of synthetic material that is loved, popular and widely used in the world today. It has the second highest global use of all synthetic materials.

According to statistics, in 1995 alone, PVC production in Europe was about 5 million tons, while its consumption was 5.3 million tons. In Germany, PVC is produced and consumed on average at 1.4 million tons. PVC is being produced and used worldwide at a growth rate of 4%.

Among them, hard PVC accounts for about 2 3 of the market, and soft PVC accounts for 1 3. Soft PVC is generally used on floors, ceilings and leather surfaces, but its use is limited because soft PVC contains softener (which is also the difference between soft PVC and hard PVC), which is easy to become brittle and difficult to preserve. Hard PVC does not contain softeners, so it is flexible, easy to form, not easy to brittle, non-toxic and pollution-free, and has a long storage time, so it has great development and application value.

Refining or cracking petroleum or gasoline produces ethylene. When chlorine and ethylene are mixed, ethylene dichloride is produced; Dichloroethylene, in turn, can be converted to produce chlorinated vinyl, which is the basic component of polyvinyl chloride. The polymerization process joins chlorinated vinyl molecules together to form a polyvinyl chloride chain.

The polyvinyl chloride produced in this way comes in the form of a white powder. It cannot be used on its own, but can be mixed with other ingredients to produce many products. Answer Supplement PVC (Polyvinyl Chloride) X0D X0A Typical Application Range:

In order to avoid material degradation, it is generally necessary to use a local injection speed. X0D X0a Runners and Gates: All regular gates can be used.

If machining smaller parts, it is best to use a pinpoint gate or a submersible gate; For thicker parts, it is best to use a fan gate. The minimum diameter of the needle-tip gate or submersible gate should be 1mm; The thickness of the sector gate should not be less than 1mm.

PVC pipe: the main ingredient is polyvinyl chloride, bright color, corrosion resistance, firm and durable, due to the addition of plasticizers, anti-aging agents and other toxic auxiliary materials in the manufacturing process to enhance its heat resistance, toughness, ductility, etc., so its products generally do not store food and medicine. If there are special physical property requirements, the modifier can also be increased in an appropriate amount.

However, plasticizers must not be added with good tensile and compressive strength, but their flexibility is not as good as other plastic pipes, and the corrosion resistance is excellent or good, the cheapest among all kinds of plastic pipes, but at low temperatures, brittle bonding, socket rubber ring connection, flange threaded connection is used for residential life, industrial and mining, agricultural water supply and drainage, irrigation, gas supply, exhaust pipes, wire conduits, rainwater pipes, industrial anti-corrosion pipes, etc. Outstanding heat resistance, heat deflection temperature of 100, excellent chemical resistance, bonding, flange threaded connection to hot water pipes.

PE pipe: the main raw material is polyethylene. Its performance is light weight, good toughness, good low temperature resistance, non-toxic, cheaper, high impact strength, but low compressive and tensile strength, hot melt welding, flange threaded connection drinking water pipes, rainwater pipes, gas pipelines, industrial corrosion-resistant pipelines.

PP pipe: good corrosion resistance, good strength, high surface hardness, surface finish, with a certain high temperature resistance hot melt welding, flange thread connection of chemical sewage, seawater, oil and irrigation pipes, used for indoor concrete floor as heating pipe for heating system.

ABS pipe: excellent corrosion resistance, light weight, heat resistance is higher than PE, PVC, but more expensive. Bonding, flange threaded connection of sewer pipes, gas pipes, sewage pipes, underground cable pipes, high anti-corrosion industrial pipes, etc.

PB pipe: between PE and PP in strength, between LDPE and HDPE, its outstanding characteristics are creep resistance (cold deformation), repeated winding and continuous, temperature resistance, chemical properties are also very good hot melt welding, flange threaded connection water supply pipe, hot water pipe, hot water pipe, gas pipe, underground buried high pipe.