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Hydraulic pipelines, simn are provided individually since of the 5 major aspects (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).
1. Seamless steel pipeline for liquid: GB8163-99
2. Smooth steel pipeline for central heating boiler: GB3087-1999
3. High pressure seamless pipeline for boiler: GB5310-95 (ST45.8- type).
4. High-pressure smooth steel pipelines for fertilizer equipment: GB6479-1999.
5. Smooth steel pipe for geological exploration: YB235-70.
6. Smooth steel pipeline for oil drilling: YB528-65.
7. Smooth steel pipe for oil fracturing: GB9948-88.
8. Unique smooth pipe for oil drill collar: YB691-70.
9. Seamless steel pipe for auto fifty percent shaft: GB3088-1999.
10. Seamless steel pipeline for ships: GB5312-1999.
11. Cold-drawn cold-rolled accuracy smooth steel pipe: GB3639-1999.
Different alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipes are separated right into smooth steel pipelines and bonded steel pipes according to various manufacturing procedures. Smooth steel pipes are seamless steel pipelines made from steel ingots, pipe billets or steel rods perforated.
Hydraulic pipeline weight formula: [( outer diameter-wall density) * wall surface density) * 0.02466= kg/m (weight per meter).
Advantages of hydraulic.
Compared to mechanical transmission as well as electrical transmission, hydraulic transmission has the complying with advantages:.
1. Various components of hydraulic transmission can be comfortably and flexibly organized according to needs.
2. Light weight, small dimension, small activity inertia and rapid reaction speed.
3. Practical procedure and also control, which can recognize stepless rate policy in a wide variety (rate regulation array as much as 2000:1).
4. The overload protection can be understood immediately.
5. Normally, mineral oil is used as the functioning tool, the loved one moving surface area can be lubricated by itself, as well as the life span is long;.
6. It is very easy to realize linear activity/.
7. It is very easy to realize the automation of the equipment. When the electro-hydraulic mixed control is taken on, not only a greater level of automatic control procedure can be recognized, however likewise remote can be recognized.
Disadvantages of hydraulics.
1. Because of the big liquid circulation resistance and leakage, the efficiency is low. Otherwise managed properly, the leakage will not just infect the website, but might additionally trigger fire as well as surge accidents.
2. As the working efficiency is conveniently affected by temperature level changes, it is not suitable to work under extremely reduced or really high temperature level problems.
3. The manufacturing precision of hydraulic parts is high, so the price is a lot more expensive.
4. Due to the leakage and also compressibility of the fluid tool, a rigorous transmission proportion can not be acquired.
5. It is challenging to discover the cause when the hydraulic transmission falls short; the usage as well as maintenance call for a greater technological level.
The hose ought to not be exceedingly bent when it is moving or at remainder, nor can it be bent at the origin, yet must start to flex at the very least 1.5 times its size;.
When the tube is relocated to a severe placement, it needs to not be pulled too snugly, it needs to be loose;.
Try to avoid torsional contortion of the hose;.
Maintain the tube as much away as possible from the warm radiating components, and it is necessary to set up a thermal barrier;.
Prevent outside damage to the hose, such as lasting rubbing externally of the very same element during usage;.
There need to be assistance parts if the hose's very own weight triggers excessive deformation.
Prior to installment, all steel pipelines can be marinaded first, specifically the steel pipelines connected to the ferrule kind pipeline joints must be pickled initially, and afterwards the ferrule is attached to the pipeline end ahead of time;.
All pipe joints need to be cleansed with kerosene before installation, the O-rings inside need to be temporarily eliminated for storage space, and afterwards place on after the official setup;.
During construction, keep the oil ports, pipe joints, pipeline ends and other openings of pumps, suppliers and also various other equipment clean, and do not permit foreign items such as water and also dust to enter;.
The pipe will be stocked a cost-free state, as well as the bonded pipeline will not be by force repaired and also linked by applying too much radial pressure;.
The oil opening of the bearing seat need to be signed in development to see if the internal oil circuit is unblocked and if the oil port thread matches the joint.
In order to make sure the sanitation of the lubrication system and also provide the bearings of mechanical equipment with clean grease, the pre-installed pipelines should be eliminated as well as cleansed. There are hydraulic adapters liujin of cleansing: kerosene cleansing as well as pickling.
( 1) Objects as well as approaches of kerosene cleaning.
Things. Copper pipelines, stainless steel pipes;.
approach. 1. The steel pipes that have been marinaded prior to pre-installation, as well as the inner wall surface is free of corrosion and also iron range; 2. The pipe joints that were stained during the pre-installation; 3. Eliminate the pipelines as well as joints that require to be cleaned, as well as use fabric (( It is necessary not to drop wool). Wipe the within the tube with kerosene, soak both ends and joints in kerosene to tidy, after that coat the inside of the tube with engine oil or fill with grease, as well as seal both finishes for installation; 4. After cleaning, there must be no noticeable impurities. (Such as iron filings, fibrous pollutants, welding slag, and so on), pay special focus to the welding slag on the inner wall surface of the weld must be extensively cleaned.
( 2) Marinading techniques and items.
Item. Steel pipes that have actually not been pickled before pre-installation; steel pipes that have been pickled but are currently seriously worn away.
Usage tidy water to remove the dirt on the pipe; 3. Wash with clean water For the add-ons created in the above procedures, the within of the pipe ought to be cleaned with high-pressure water; 5. In order to successfully dry out the pipe, the pipeline ought to be submersed in warm water or vapor dried out.
The steel pipelines that have been marinaded before pre-installation, as well as the internal wall is cost-free of corrosion as well as iron scale; 2. Eliminate the pipelines as well as joints that require to be cleansed, and utilize towel (( It is required not to shed wool). Usage clean water to get rid of the dust on the pipeline; 3. Rinse with clean water For the attachments created in the above procedures, the within of the pipe must be cleaned with high-pressure water; 5. In order to properly dry the pipe, the pipe should be submersed in warm water or steam dried out.
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