1. Basic characteristics

Color and appearance: Common colors of wear-resistant sandblasting hose are black, sub-yellow or transparent. The outer rubber layer is usually wrapped with packing tape, and there is usually steel wire between the inner and outer rubber to adapt to negative pressure conditions.

Wear resistance: The wear resistance coefficient of wear-resistant sandblasting hose is usually between 60 and 75 cubic millimeters. It has high wear resistance and can be used for a long time in harsh working environments.

Temperature range: Its common temperature range is -30℃~+80℃, which is suitable for operations under various ambient temperatures.

2. Main uses

Wear-resistant sandblasting hose is mainly used to transport materials containing solid particles, such as particles, gravel, cement, quicksand, concrete, gypsum, etc. These materials will cause certain wear on the pipeline during transportation, so the pipeline is required to have high wear resistance. Wear-resistant sandblasting hose is widely used in various tunnel projects, shafts, tunnels, caverns and other engineering operations, and is also suitable for sandblasting, spraying, rust removal and other working environments.

 

3. Structure and Materials

Inner rubber layer: The inner rubber layer of the wear-resistant sandblasting hose is usually made of wear-resistant materials, such as NBR (acrylonitrile butadiene copolymer), SBR (oil-filled styrene butadiene rubber), etc. Some imported hoses use PARA rubber (triloba rubber) with better performance. The wear resistance and tear resistance of the inner rubber layer are strictly required to ensure the purity and transmission efficiency of the material during transportation.

Reinforcement layer: In order to improve the strength and pressure resistance of the wear-resistant sandblasting hose, a reinforcement layer such as a steel wire braided layer or a spiral steel wire layer is usually set between the inner and outer rubbers. These reinforcement layers can effectively resist the deformation and rupture of the pipeline during transportation.

Outer rubber layer: The outer rubber layer mainly plays a protective and supporting role, and is usually made of wear-resistant, aging-resistant and corrosion-resistant polymer materials. The outer rubber layer can effectively prevent the aging, corrosion and damage of the pipeline in the external environment.

4. Classification and specifications

Wear-resistant sandblasting hoses are usually divided into light sandblasting hoses and heavy sandblasting hoses according to the working conditions and the degree of loss of the conveying medium by the material particles. At the same time, according to the specific use requirements, wear-resistant sandblasting hoses also have a variety of specifications to choose from, such as diameter, wall thickness, length, etc. The common wear-resistant sandblasting hose caliber and hose inner diameter, wall thickness, and outer diameter parameters are as follows: 51 mm inner diameter hose, 6.5 mm wall thickness, 64 mm outer diameter; 63 mm inner diameter hose, 6.5 mm wall thickness, 76 mm outer diameter.

 

V. Performance requirements

Working pressure: The working pressure of wear-resistant sandblasting hoses is usually within 12 bar, and the higher bursting pressure can reach 36 bar. Sometimes it is necessary to consider vacuum negative pressure parameters, such as 0.8 bar ~ 0.9 bar.

Aging resistance: During long-term use, wear-resistant sandblasting hoses should have good aging resistance to ensure their service life and safety.

Flexibility: Wear-resistant sandblasting hoses should have a certain degree of flexibility to facilitate installation and disassembly in complex piping systems.

VI. Brand and selection

There are many well-known brands of wear-resistant sandblasting hoses on the market, such as Anjieshun, Honeywell, nakabayashi, etc. When choosing a wear-resistant sandblasting hose, you should consider the specific use environment, material characteristics, working pressure and other factors comprehensively, and choose products with excellent performance and reliable quality.

 

In summary, the wear-resistant sandblasting hose is a material conveying pipeline with multiple excellent properties, which is widely used in various engineering operations and material conveying environments. In the process of selection and use, its characteristics, use, structure and materials should be fully considered to ensure its safe and efficient operation.