Notes

fundamental introduction<br>
Hydraulic pipelines, simn are noted individually due to the 5 significant elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipeline for fluid: GB8163-99

2. Smooth 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 devices: GB6479-1999.

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

6. Smooth steel pipeline for oil drilling: YB528-65.

7. Smooth steel pipeline for oil splitting: GB9948-88.

8. Unique smooth pipeline for oil drill collar: YB691-70.

9. Smooth steel pipe for vehicle half shaft: GB3088-1999.

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

11. Cold-drawn cold-rolled accuracy seamless steel pipeline: GB3639-1999.

Numerous alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are split right into smooth steel pipelines as well as welded steel pipelines according to different production processes. Seamless steel pipelines are smooth steel pipelines made from steel ingots, pipeline billets or steel rods perforated.

Hydraulic pipeline weight formula: [( external diameter-wall density) * wall thickness) * 0.02466= kg/m (weight per meter).

Advantages of hydraulic.

Compared with mechanical transmission and electrical transmission, hydraulic transmission has the following advantages:.

1. Numerous components of hydraulic transmission can be comfortably and also flexibly prepared according to demands.

2. Light weight, small size, tiny activity inertia and rapid reaction speed.

3. Convenient procedure as well as control, which can realize stepless speed regulation in a wide range (speed regulation array as much as 2000:1).

4. The overload defense can be realized immediately.

5. Usually, mineral oil is used as the functioning tool, the loved one relocating surface can be lubricated by itself, and also the life span is long;.

6. It is very easy to recognize straight movement/.

7. It is very easy to understand the automation of the machine. When the electro-hydraulic combined control is taken on, not just a greater degree of automated control process can be understood, but also push-button control can be recognized.

Downsides of hydraulics.

1. Due to the large liquid flow resistance and also leakage, the performance is low. If not managed properly, the leak will certainly not just infect the site, however might likewise cause fire and also explosion crashes.

2. As the working efficiency is conveniently influenced by temperature level modifications, it is not suitable to work under really reduced or really high temperature level conditions.

3. The manufacturing accuracy of hydraulic parts is high, so the rate is extra pricey.

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

5. When the hydraulic transmission falls short; the use and upkeep call for a greater technological degree, it is not simple to discover out the cause.

Port installment.

The pipe should not be exceedingly curved when it is relocating or at remainder, neither can it be curved at the root, but should start to flex at least 1.5 times its diameter;.

When the hose is transferred to a severe setting, it ought to not be pulled also securely, it should be loose;.

Try to prevent torsional deformation of the tube;.

Maintain the hose pipe as away as feasible from the heat emitting elements, and it is essential to set up a warmth guard;.

Avoid outside damages to the hose, such as long-lasting friction on the surface of the same part throughout use;.

If the hose's own weight creates excessive deformation, there must be assistance parts.

Pipeline setup.


Prior to installation, all steel pipes can be pickled first, specifically the steel pipelines attached to the ferrule kind pipeline joints ought to be marinaded initially, and afterwards the ferrule is attached to the pipeline end in advancement;.

All pipe joints must be cleaned up with kerosene before installation, the O-rings inside ought to be temporarily gotten rid of for storage, and after that place on after the formal installation;.

During construction, keep the oil ports, pipe joints, pipeline ends and various other openings of pumps, distributors and various other tools clean, and do not allow international items such as water as well as dirt to get in;.

The pipeline will be laid in a complimentary state, and the bonded pipe shall not be by force dealt with as well as attached by applying extreme radial force;.

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

Pipeline cleaning.

In order to ensure the cleanliness of the lubrication system and also provide the bearings of mechanical tools with clean oil, the pre-installed pipes should be eliminated as well as cleaned up. There are 2 sorts of cleaning: kerosene cleansing and also pickling.

( 1) Objects and also approaches of kerosene cleansing.

Object. LIUJIN hydraulic hose fitting , stainless steel pipelines;.

The steel pipes that have been marinaded prior to pre-installation, and also the inner wall surface is totally free of corrosion and also iron range; 2. The pipeline joints that were soiled throughout the pre-installation; 3. Get rid of the pipelines and joints that need to be cleansed, as well as utilize towel (( It is essential not to drop woollen).

( 2) Marinading approaches and things.

Object. Steel pipelines that have not been marinaded before pre-installation; steel pipes that have been pickled but are now seriously rusted.

Use tidy water to get rid of the dust on the pipe; 3. Wash with tidy water For the add-ons generated in the above procedures, the within of the pipe ought to be washed with high-pressure water; 5. In order to properly dry out the pipeline, the pipeline ought to be submersed in hot water or vapor dried.



The steel pipelines that have been marinaded prior to pre-installation, as well as the inner wall is complimentary of rust as well as iron range; 2. Eliminate the pipes and joints that need to be cleaned, and also utilize fabric (( It is needed not to drop wool). Use clean water to eliminate the dirt on the pipeline; 3. Rinse with clean water For the accessories produced in the above procedures, the inside of the pipe should be washed with high-pressure water; 5. In order to efficiently dry the pipe, the pipe should be immersed in hot water or steam dried.

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