Notes

basic introduction<br>
Hydraulic pipelines, simn are detailed independently due to the five significant elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Smooth steel pipeline for fluid: GB8163-99

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

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

4. High-pressure smooth steel pipes for plant food equipment: GB6479-1999.

5. Smooth steel pipeline for geological boring: YB235-70.

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

7. Seamless steel pipeline for oil fracturing: GB9948-88.

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

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

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

11. Cold-drawn cold-rolled precision seamless steel pipe: GB3639-1999.

Numerous alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipes are separated right into smooth steel pipes as well as bonded steel pipelines according to different manufacturing procedures. Seamless steel pipes are seamless steel pipelines made from steel ingots, pipeline billets or steel rods perforated.

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

Advantages of hydraulic.


Compared to mechanical transmission and electrical transmission, hydraulic transmission has the following benefits:.

1. Numerous parts of hydraulic transmission can be conveniently and flexibly prepared according to needs.

2. Lightweight, tiny size, little activity inertia and also quick response speed.

3. Practical procedure and also control, which can understand stepless speed guideline in a large range (speed law array up to 2000:1).

4. The overload defense can be understood automatically.

5. Normally, mineral oil is used as the functioning tool, the relative moving surface can be lubricated by itself, and also the solution life is long;.

6. It is simple to recognize straight movement/.

7. It is simple to recognize the automation of the machine. When the electro-hydraulic mixed control is taken on, not only a greater level of automatic control process can be understood, yet additionally push-button control can be understood.

Disadvantages of hydraulics.

1. Due to the large liquid circulation resistance and also leak, the performance is low. Otherwise dealt with correctly, the leak will certainly not just contaminate the site, yet may likewise create fire and explosion mishaps.

2. As the working efficiency is quickly influenced by temperature modifications, it is not appropriate to function under extremely high or really low temperature problems.

3. The production precision of hydraulic components is high, so the cost is extra pricey.

4. Because of the leak as well as compressibility of the liquid medium, a rigorous transmission ratio can not be acquired.

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

Port installation.

The hose must not be exceedingly bent when it is relocating or at remainder, neither can it be curved at the root, yet ought to begin to flex at the very least 1.5 times its size;.

When the tube is relocated to an extreme placement, it ought to not be pulled also firmly, it ought to hang;.

Try to prevent torsional contortion of the pipe;.

Keep the hose as far away as possible from the warmth radiating parts, and it is required to mount a thermal barrier;.

Stay clear of external damage to the hose pipe, such as long-term rubbing on the surface of the very same element throughout use;.

If the tube's own weight creates extreme contortion, there need to be support parts.

Pipe installation.

Prior to installment, all steel pipes can be marinaded initially, specifically the steel pipelines attached to the ferrule kind pipeline joints need to be pickled first, and after that the ferrule is fastened to the pipe end in breakthrough;.

All pipeline joints must be cleansed with kerosene prior to installment, the O-rings inside must be temporarily removed for storage space, as well as after that put on after the formal installment;.

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

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

The oil opening of the bearing seat need to be checked in development to see if the internal oil circuit is unblocked as well as if the oil port string matches the joint.

Pipeline cleaning.

In order to guarantee the tidiness of the lubrication system as well as supply the bearings of mechanical equipment with tidy grease, the pre-installed pipelines need to be gotten rid of and also cleaned up. There are 2 kinds of cleaning: kerosene cleansing and pickling.

( 1) Items as well as techniques of kerosene cleaning.

Object. Copper pipelines, stainless steel pipelines;.

method. 1. The steel pipelines that have been pickled before pre-installation, and the internal wall surface is without rust and also iron range; 2. The pipeline joints that were dirtied throughout the pre-installation; 3. Remove http://www.liujin-fittings.com/Factory-direct-supplier-hydraulic-ferrule-reusable-hose-fitting-ferrule-for-hydraulic-hose-pd46655763.html and also joints that require to be cleansed, as well as utilize towel (( It is needed not to lose wool). Clean the within the tube with kerosene, soak both ends and also joints in kerosene to clean, after that layer the within television with engine oil or full of grease, as well as seal both ends for installment; 4. After cleaning, there should be no visible contaminants. (Such as iron filings, fibrous impurities, welding slag, and so on), pay unique interest to the welding slag on the internal wall surface of the weld should be thoroughly cleaned.

( 2) Pickling items as well as methods.

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

Use tidy water to remove the dirt on the pipeline; 3. Wash with clean water For the attachments generated in the above procedures, the inside of the pipe need to be cleaned with high-pressure water; 5. In hydraulics hoses and fittings to effectively dry out the pipeline, the pipe needs to be immersed in warm water or steam dried out.



The steel pipes that have been pickled before pre-installation, and the inner wall surface is cost-free of rust and iron range; 2. Remove the pipelines and joints that need to be cleaned, and also use fabric (( It is essential not to shed woollen). Use hydraulics hoses and fittings to eliminate the dust on the pipeline; 3. Wash with clean water For the attachments created in the above operations, the inside of the pipe must be cleaned with high-pressure water; 5. In order to effectively dry the pipe, the pipeline must be submersed in warm water or vapor dried.

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