In the industrial long tube production ratio is shrinking at the same time, the industrial short tube over the decades there has been rapid development, production has risen sharply, and now has become the leading products of the hose.
With the rapid development of hydraulic technology, pneumatic technology, represented by high-pressure hoses, a variety of short tubes have been popularized to the aircraft, automobiles, construction machinery, special industrial vehicles, hydraulic machine tools, ships, plastics processing machinery, robots and other fields. Especially the automobile with a variety of connecting tube.
A few decades ago, the automobile hose is only a few kinds of products such as cooling pipe, brake pipe, and modern automobile hose has reached more than 20 kinds of hose.
In addition to high-performance brake pipe, fuel pipe, there are air conditioning pipe, power steering pipe and other types of functional hoses, most of them are high value-added high-tech products with complex metal buckling joints, so that the hose manufacturing technology is becoming more sophisticated, and the industry is gradually upgraded.
Automotive piping products play a key role in various systems of the automobile, like nerve bundles and respiratory tracts in the human body. Mainly embodied in the safe, energy-saving, environmentally friendly for the automotive systems to transport gas, liquid and other working media.
With the continuous development of automotive technology and automotive performance continues to improve, and the growing public awareness of environmental protection, the host factory of the automotive fluid piping product performance has put forward more and more stringent requirements, according to the use of different piping systems will be used in a variety of engineering plastics, such as PBT, POM, PPS, PA6/66, PA12, PPA, as well as rubber, polyester and other materials;
There are many types of automotive hoses, which can be categorized into braking, transmission, steering, intake and exhaust, cooling, fuel, etc. according to the industry classification.
Although the structure of automotive hoses for different purposes varies, the overall roughly divided into three basic parts, such as the inner layer, the reinforcement layer and the outer layer. The inner layer is the hose directly in contact with the level of the working medium, plays a sealing, infusion role, it should have a certain thickness, can be resistant to temperature, corrosion, friction. Enhanced layer is the part of the hose to withstand pressure, with considerable stiffness and strength, play a role in protecting the structure of the hose. The outer layer is the protective layer of the hose, play a role in the external defense, there should be a certain thickness, temperature, corrosion, abrasion and aging resistance.