Notes

fundamental intro<br>
Hydraulic pipes, simn are noted individually due to the five major aspects (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipeline for liquid: GB8163-99

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

3. High stress smooth pipeline for boiler: GB5310-95 (ST45.8- type).

4. High-pressure smooth steel pipelines for plant food devices: GB6479-1999.

5. Smooth steel pipe for geological exploration: YB235-70.

6. Seamless steel pipe for oil exploration: YB528-65.

7. Seamless steel pipeline for petroleum splitting: GB9948-88.

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

9. Smooth steel pipe for auto fifty percent shaft: GB3088-1999.

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

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

Various alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are separated right into smooth steel pipes as well as welded steel pipes according to different manufacturing processes. Seamless steel pipes are smooth steel pipes made from steel ingots, pipe billets or steel poles perforated.


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

Advantages of hydraulic.

Compared to mechanical transmission as well as electric transmission, hydraulic transmission has the complying with benefits:.

1. Different components of hydraulic transmission can be conveniently and flexibly organized according to demands.

2. Light weight, tiny dimension, small movement inertia and quick reaction rate.

3. Convenient procedure and control, which can understand stepless speed regulation in a vast array (rate regulation range as much as 2000:1).

4. The overload defense can be recognized automatically.

5. Normally, mineral oil is made use of as the working tool, the family member relocating surface can be lubricated on its own, and the life span is long;.

6. It is easy to understand direct movement/.

7. LIUJIN hydraulic hose fitting is very easy to realize the automation of the machine. When the electro-hydraulic consolidated control is adopted, not just a greater level of automated control procedure can be realized, but also remote can be realized.

Negative aspects of hydraulics.

1. Due to the huge liquid flow resistance as well as leak, the performance is reduced. If not taken care of appropriately, the leakage will certainly not only pollute the site, but might also create fire and surge accidents.

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

3. The production accuracy of hydraulic parts is high, so the price is more costly.

4. Due to the leak and compressibility of the fluid tool, a stringent transmission ratio can not be acquired.

5. When the hydraulic transmission fails; the use as well as upkeep require a higher technical level, it is not very easy to locate out the reason.

Adapter installment.

The hose needs to not be exceedingly bent when it is moving or at rest, neither can it be curved at the root, but ought to begin to flex a minimum of 1.5 times its size;.

When the hose pipe is transferred to a severe setting, it needs to not be drawn too securely, it needs to be loose;.

Try to avoid torsional contortion of the hose;.

Keep the pipe as much away as possible from the warmth radiating parts, and also it is necessary to mount a warm guard;.

Stay clear of external damage to the pipe, such as long-term rubbing externally of the same element throughout usage;.

There must be support parts if the hose pipe's very own weight triggers extreme contortion.

Pipe installment.

Prior to installation, all steel pipelines can be marinaded first, specifically the steel pipelines connected to the ferrule type pipe joints must be pickled initially, and also after that the ferrule is secured to the pipeline end in advancement;.

All pipe joints must be cleaned with kerosene prior to setup, the O-rings inside must be briefly gotten rid of for storage space, and after that place on after the official setup;.

During building and construction, maintain the oil ports, pipeline joints, pipe ends as well as various other openings of pumps, distributors as well as other equipment clean, and also do not permit foreign items such as water as well as dust to get in;.

The pipeline will be stocked a complimentary state, and the bonded pipe will not be forcibly taken care of as well as linked by using too much radial pressure;.

The oil hole of the bearing seat ought to be checked in advance to see if the inner oil circuit is unblocked as well as if the oil port string matches the joint.

Pipe cleansing.

In order to make certain the sanitation of the lubrication system as well as supply the bearings of mechanical devices with clean oil, the pre-installed pipes should be eliminated and also cleaned up. There are two kinds of cleansing: kerosene cleansing and also pickling.

( 1) Objects as well as approaches of kerosene cleaning.

Object. Copper pipes, stainless-steel pipes;.

technique. 1. The steel pipelines that have actually been pickled prior to pre-installation, and also the internal wall surface is free of corrosion and iron range; 2. The pipeline joints that were soiled throughout the pre-installation; 3. Remove the pipelines and also joints that require to be cleaned, as well as make use of towel (( It is essential not to lose woollen). Clean the within the tube with kerosene, saturate both ends as well as joints in kerosene to clean, then layer the within of the tube with engine oil or loaded with oil, and also seal both ends for installment; 4. After cleansing, there ought to be no noticeable impurities. (Such as iron filings, fibrous pollutants, welding slag, and so on), pay special interest to the welding slag on the internal wall surface of the weld have to be thoroughly cleaned up.

( 2) Pickling methods and also objects.

Things. Steel pipes that have actually not been marinaded prior to pre-installation; steel pipes that have been pickled yet are now severely rusted.

approach. 1. Utilize LIUJIN hydraulic hose fitting degreasing representative to remove the oil sticking to the pipeline; 2. Use clean water to remove the dust on the pipe; 3. Eliminate the rust places on the pipeline wall, rolled iron filings, and so on in the pickling option; 4. Rinse with clean water For the accessories produced in the above operations, the within of the pipe need to be washed with high-pressure water; 5. Reduce the effects of the acid service remaining on the pipe with lye; 6. In order to effectively dry the pipeline, the pipe must be immersed in hot water or steam dried. Make the pipelines dry; 7. Inspect the pickled pipelines to see if they are tidy; 8. Seal the opening of the pipeline with plastic or plastic tape immediately after marinading to avoid international issue and moisture from intruding [1]



The steel pipelines that have been pickled prior to pre-installation, and the inner wall is cost-free of rust as well as iron range; 2. Remove the pipes and also joints that need to be cleansed, as well as utilize fabric (( It is required not to drop woollen). Usage clean water to get rid of the dust on the pipeline; 3. Rinse with clean water For the accessories generated in the above operations, the inside of the pipeline must be washed with high-pressure water; 5. In order to successfully dry out the pipe, the pipeline needs to be submersed in warm water or vapor dried out.

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