Steel wire braided rubber hose is used for conveying fluid media. In the selection and use, those who are not familiar with it do not know how to make the performance of the hose show its stable side in production. Improper methods often produce the opposite effect. In order to increase the usage time limit, corresponding measures need to be followed.

1、 Rubber hose selection

The correct selection of rubber hoses requires ensuring the safety and rationality of the entire system. Please pay attention to the following points:

1. Select the number of steel wire layers based on the pressure of the system

The higher the pressure, the more layers of steel wire. Each type of hose has a working pressure, and the burst pressure is four times the working pressure. Therefore, based on the actual system pressure, the working pressure of the selected hose may be higher than the actual working pressure.

2. Select inner diameter based on flow rate

If the pipe diameter is too small, the flow velocity of the medium inside the pipeline will increase, causing the system to heat up, reduce efficiency, and generate excessive pressure drop, which will affect the performance of the entire system. If the inner diameter is too large, the cost will increase. Therefore, the inner diameter needs to be appropriate, and when fixing with pipe clamps or threading rubber hoses through steel plates or other gaskets, attention should also be paid to the outer diameter of the rubber hose.

3. Bending radius

When selecting, attention should be paid to the bending radius. When calculating the bending radius, the length of the previous joint's compression should be subtracted. If the bending radius of the installed hose is too small, it will reduce its pressure bearing capacity and affect its service life.

4. The joint form should be reasonably selected according to the hydraulic layout, such as SAE flange joint, internal thread joint or external thread joint, 90, 45 joint angle and assembly angle.

2、 Rubber hose transportation

1. During the process of loading and unloading rubber hoses, they should be handled with care.

2. Sort neatly and transport in rolls (belts). Avoid excessive bending of the pipe body, and do not stack other heavy objects on the rubber hose.

3. It is strictly prohibited to mix rubber hoses with acids, alkalis, oils, organic solvents, and flammable and explosive materials, and they should not come into direct contact with objects with sharp edges.

4. During shipment, excessive compression or exceeding the body of the vehicle is not allowed. If it is necessary to exceed the body of the vehicle, corresponding protection measures should be taken.

3、 Rubber hose storage

1. The storage area should be kept clean, ventilated, and the relative humidity should be below 80%. The temperature of the storage location should be maintained between -15 ° C and 40 ° C, and the hose should be protected from direct sunlight and water.

2. If temporary outdoor storage is required, the site should be flat, and the rubber hoses should be placed neatly and smoothly. There should be a cover below, and heavy objects should not be stacked on top. At the same time, they should not come into contact with heat sources.

3. When stored, they should be separated according to different varieties and specifications, and should not be stacked together. Management signs should be hung.

4. When storing, it is necessary to seal both ends of the rubber hose tightly to prevent debris from entering the steel wire braided rubber hose.

5. Rubber hoses should be stored in a relaxed state as much as possible, and hoses with an inner diameter less than 76mm can generally be stored in rolls.

6. To prevent deformation due to compression during storage, the stacking height should not exceed 1.5m, and the stacking height should not exceed 1.5m. During storage, it is also required to frequently "dismantle the stack" at least once every quarter.

7. When stored, it should not come into contact with acids, alkalis, oils, organic solvents, or other corrosive liquids or gases, and should be kept 1 meter away from heat sources.

8. During storage, it is strictly prohibited to stack heavy objects on the rubber hose to prevent external compression and damage.

9. The storage period of rubber hoses should not exceed 2 years. The first to store should be used first to prevent long-term storage from affecting quality.

4、 Installation and use

1. Can only be used for conveying designed media.

2. It is strictly prohibited to use steel wire braided rubber hoses beyond the designed working pressure.

3. The temperature of the conveyed medium should not exceed the factory requirements, with oil at -40 ℃~120 ℃ and water emulsion below 80 ℃.

4. The rubber hose should be kept clean and the inside should be rinsed thoroughly. Prevent foreign objects from entering the lumen, obstructing liquid delivery, and damaging equipment.

5. The arrangement of rubber hoses should be as far away from heat sources as possible, and devices such as sleeves or heat shields can be installed to prevent deterioration due to heat.

6. Protective measures should be taken at the intersection or friction between the rubber hose and the mechanical surface to prevent bursting due to wear and tear.

7. When using on site, try to keep the rubber hose straight. When it needs to be bent, avoid sharp bends. The bending radius should not be too small, but should be greater than 9 times the outer diameter, and the straight section connected to the joint should be greater than twice the outer diameter of the pipeline.

8. Do not twist the hose during installation, as twisting the hose may reduce its strength and loosen the joint. During assembly, the joint should be tightened onto the hose instead of the hose being screwed onto the joint.

9. During installation, avoid being in a tight state and leave a corresponding length allowance to keep the hose loose.

10. Protect the rubber hose during daily use to prevent it from being squeezed, hit, etc.

11. When operating the control valve, be gentle to reduce pressure impact on the hose and prevent it from bursting.

12. It is necessary to use matching regular "U" cards, sealing rings, two-way connectors, three-way connectors, etc. It is strictly prohibited to use other substitutes.

13. Immediate replacement is required in case of leakage, rupture, bulging, joint corrosion, wire breakage, aging and cracking of the adhesive layer, etc.

The above are the measures that need to be followed when selecting and using steel wire braided rubber hoses. During daily use, strengthen inspection and replacement. Newly invested or replaced rubber hoses need to be tested and identified before use, and can only be used after passing the test. During the testing period, no one is allowed to approach.