When rupture occurs parher Hydraulic Hose Fittings

The main coal industry Hydraulic hose hydraulic hose bracket. In recent years, the pressure and some coal hydraulic support requirements have been increased, part steel braided hose does not meet the performance demands to use wire wound tubing. In addition, to prevent coal mine manifold block assembly coal dust pollution and improve the process of production safety, increased coal use tubing varieties, such as coal hose connector seam sealing water exploration telescopic tubing, used in coal mine face before mechanized mining of coal seam water , grouting and other operations. According to reports, the domestic manufacturers have, and after more than a dozen coal trial, can replace similar imported products.

Reusable hose fitting standard presentation .

Which is larger than the hole size should be appropriate to the size of the enhancement layer, or can not load, or even cause an enhancement layer completely loose head phenomenon. Clearance is generally 1 ~ 1.5mm. Coat the inside of the groove will directly affect hydraulic hose adapters the quality of the joint. There are currently no slot straight holes, jagged and serrated groove and an annular trough combined. Cotton (fiber) due to the use of low pressure braided hose, pull off force is small, have adopted no-slot structure. Wire braided hose in the enhancement layer prone to withhold its bending, multi-use serrated. Steel Pipe layers generally more unilateral enhancement layer thickness up to 3.6mm, while withholding make enhancement layer wavy deformation into the trench must adopt zigzag ring and groove combination, this slot sawtooth-shaped than the width of 2/3, its anti-pull off stronger.hydraulic adapters Withholding process is the most important factor affecting quality. Impact withhold hose connector assembly quality is the most important process factors withhold processes. There are currently two ways to withhold An axial push-in (Fig. 4) can be used in common for mold press to be achieved. Its not easy to adjust the amount withheld, the withholding process is easy to damage the outer surface of the jacket. To remove withhold pieces. The mold must be made waffle. It has a seam that finished look bad. Another radial withhold its mold has folio, three, six and eight-mode points. Six lobe is generally used for mass production, and eight petal mold to ensure the quality of basic withhold the correct amount of compression to master the rubber hose and coats withholding amount. According to production practice. Empirical formula can be used to calculate the amount of compression is relatively simple glue.

parher Hydraulic Hose Fittings according to the form and friction materials,

according to the form and the friction of the material. Oil in contact with the stator blade surface and vane pump in motion easy to wear, its steel - steel friction material, as applicable to the ZDDP anti-wear agent L-HM anti-wear hydraulic oil; piston cylinder, oil pan, form and movement forms piston friction is also suitable for hydraulic hose clamps use HM hydraulic oil, but there are bronze piston pump parts, due to the effects of this material components with ZDDP corrosion and wear, so it is not piston bronze pieces use with ZDDP as additives HM hydraulic oil sae flanges. Meanwhile, the choice of hydraulic oil and hydraulic systems must also consider its sealing material to adapt. General vane pump can be used zinc anti-wear hydraulic oil, piston best selection of ash-type oil. Vane pump pressure is higher than 15MPa, piston pressure is higher than 30MPa, pump hydraulic system two models exist, and should be used in compliance with Denison HF-0 specification oil. Gear pumps, vane pumps and piston pumps are the main hydraulic system pump type, the order of the hydraulic oil lubrication effect of the three pumps is less wear vane pump> Pump> gear pump. Therefore, all the main oil pump vane pump hydraulic system pressure regardless of the size selection HM oil as well.