Notes

fundamental intro<br>
Hydraulic pipes, simn are noted separately due to the fact that of the 5 significant elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipe for liquid: GB8163-99

2. Seamless steel pipe for central heating boiler: GB3087-1999

3. High pressure smooth pipe for boiler: GB5310-95 (ST45.8- type).

4. High-pressure seamless steel pipes for plant food tools: GB6479-1999.

5. Seamless steel pipeline for geological exploration: YB235-70.


6. http://www.liujin-fittings.com/1XT-40-32-hydraulic-couplings-hydraulic-adapter-air-hose-swivel-fittings-pd47626763.html for oil exploration: YB528-65.

7. Seamless steel pipe for oil splitting: GB9948-88.

8. Unique seamless pipe for oil drill collar: YB691-70.

9. Seamless steel pipe for automobile fifty percent shaft: GB3088-1999.

10. Seamless steel pipeline for ships: GB5312-1999.

11. Cold-drawn cold-rolled precision smooth steel pipeline: GB3639-1999.

Various alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipes are split into smooth steel pipelines and also bonded steel pipes according to different manufacturing processes. Seamless steel pipes are smooth steel pipes made from steel ingots, pipeline billets or steel poles perforated.

Hydraulic pipe weight formula: [( outer diameter-wall density) * wall surface density) * 0.02466= kg/m (weight per meter).

Advantages of hydraulic.

Compared to mechanical transmission and electrical transmission, hydraulic transmission has the adhering to advantages:.

1. Various components of hydraulic transmission can be comfortably and flexibly arranged according to demands.

2. Lightweight, tiny dimension, tiny activity inertia as well as fast response speed.

3. Practical operation and control, which can understand stepless rate regulation in a wide variety (speed guideline variety approximately 2000:1).

4. The overload protection can be understood instantly.

5. Normally, mineral oil is made use of as the working tool, the loved one moving surface can be oiled on its own, and also the life span is long;.

6. It is simple to recognize linear motion/.

7. It is easy to realize the automation of the machine. When the electro-hydraulic mixed control is adopted, not only a higher level of automated control process can be recognized, yet likewise remote can be realized.

Downsides of hydraulics.

1. Due to the huge fluid circulation resistance and also leak, the efficiency is low. If not handled correctly, the leak will not only infect the site, yet might likewise trigger fire and also surge crashes.

2. As the working efficiency is conveniently impacted by temperature changes, it is not suitable to function under very high or really reduced temperature problems.

3. The manufacturing accuracy of hydraulic parts is high, so the price is much more pricey.

4. Because of the leak and also compressibility of the fluid medium, a rigorous transmission proportion can not be obtained.

5. It is not simple to discover the reason when the hydraulic transmission fails; the usage and also upkeep require a higher technological degree.

Port installation.

The pipe should not be exceedingly bent when it is relocating or at rest, nor can it be bent at the origin, but should begin to bend at the very least 1.5 times its diameter;.

When the tube is relocated to an extreme setting, it must not be drawn as well securely, it needs to be loosened;.

Attempt to prevent torsional deformation of the hose;.

Keep the hose as far as feasible from the warm radiating elements, and also it is required to set up a warmth guard;.

Avoid outside damages to the tube, such as long-term friction externally of the very same component during use;.

If the hose pipe's very own weight triggers too much deformation, there must be assistance components.

Pipeline setup.

Prior to installment, all steel pipes can be pickled initially, specifically the steel pipes connected to the ferrule kind pipeline joints need to be marinaded first, and afterwards the ferrule is secured to the pipeline end beforehand;.

All pipe joints must be cleaned with kerosene prior to installment, the O-rings inside ought to be briefly removed for storage, as well as then place on after the official installment;.

Throughout building, maintain the oil ports, pipe joints, pipeline ends as well as various other openings of pumps, representatives and other tools clean, as well as do not allow foreign items such as water and dust to enter;.

The pipe will be laid in a free state, as well as the bonded pipe will not be forcibly repaired as well as linked by applying too much radial force;.

The oil opening of the bearing seat ought to be checked in breakthrough to see if the inner oil circuit is unblocked and if the oil port string matches the joint.

Pipe cleansing.

In order to make certain the cleanliness of the lubrication system as well as provide the bearings of mechanical equipment with clean grease, the pre-installed pipelines should be eliminated and also cleaned. There are two kinds of cleaning: kerosene cleaning and also pickling.

( 1) Things and approaches of kerosene cleansing.

Things. Copper pipes, stainless-steel pipes;.

The steel pipelines that have actually been marinaded before pre-installation, and the inner wall surface is totally free of corrosion and also iron range; 2. The pipe joints that were soiled throughout the pre-installation; 3. Get rid of the pipelines and joints that need to be cleaned, as well as make use of fabric (( It is necessary not to drop woollen).

( 2) Marinading things as well as approaches.

Things. Steel pipelines that have actually not been pickled before pre-installation; steel pipes that have actually been pickled but are currently seriously worn away.

Usage tidy water to get rid of the dirt on the pipeline; 3. Wash with tidy water For the accessories produced in the above operations, the inside of the pipe should be washed with high-pressure water; 5. In order to efficiently dry out the pipe, the pipeline must be submersed in hot water or heavy steam dried out.



The steel pipelines that have actually been marinaded before pre-installation, and also the inner wall is free of corrosion and also iron scale; 2. Eliminate the pipelines and joints that require to be cleansed, as well as make use of towel (( It is essential not to lose wool). Usage tidy water to eliminate the dirt on the pipeline; 3. Wash with tidy water For the add-ons produced in the above operations, the within of the pipeline should be cleaned with high-pressure water; 5. In flexible hose fitting to properly dry the pipeline, the pipeline needs to be submersed in hot water or steam dried.

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