Analysis of Reasons for Good Application of Sandblasting Pipe in Industry
The application of sand blasting pipes in modern industrial activities is very extensive, especially in shipbuilding, machining, spraying industries, etc. The sand blasting pipe fully demonstrates the superiority of "energy saving, environmental protection, economy and efficiency" under the conditions of strong corrosion and high wear. Because the sand blasting pipe has the minimum necessary strength of 10MPa, it has more advantages in use. What conditions do you need to have in order to get a good application in practice?
The excellent function of the blast tube depends largely on its semi-crystalline layout. Its short-term strength, impact strength, tensile strength, and hardness are mainly limited by the crystalline phase of the data; and its long-term strength, such as environmental stress cracking resistance, depends on chain entangled molecules in the amorphous region. The more interlacing molecules the function is, the better.
1 Operating temperature: The operating temperature of the hose is -20-70 ° C.
2 Materials and structure: The sandblasting pipe should have the following components: inner lining (inner rubber layer); reinforcement layer of natural or synthetic fabric laid by appropriate methods; outer cover (outer rubber layer); The layers are mostly laminated and corded.
3 Hydraulic requirements: The maximum working pressure of the hose is 0.63MPa. When the hose is hydraulically tested at twice the working pressure, it should be free of water leakage, no local bulging, no swelling, and no other abnormal phenomena. The antistatic hose maintains pressure for 1min, its length change should not exceed ± 0.8%, the outer diameter change should not exceed ± 10%, and torsion should not exceed 60 & ordm. The burst pressure of the hose should be no less than 4 times the working pressure.
What aspects of the sand blasting pipe affect its resistance performance Generally speaking, the development of the pipe industry is relatively fast. The needs of different industries directly determine the development of the pipe industry. The sand blasting pipe is a typical example. In practical applications, we find that sandblasting pipes have very strong resistance properties. What we want to know today is the aspects that affect their performance:
1 The life of sand blasting pipes is 6-10 times that of steel pipes under strong corrosion and high wear conditions, which fully demonstrates the advantages of "energy saving, environmental protection, economical and efficient"
2 The impact resistance and impact energy absorption of ultra-high molecular weight blast pipes are the first in plastics. Whether it is a strong external force or an internal pressure shake, it is difficult to crack it. Its impact strength is 10 times that of nylon 66. The flexibility of 20 times of vinyl chloride and 4 times of polyethylene provides extremely safe and reliable guarantee for the transportation system.
3 Because the sand blasting pipe has the minimum necessary strength of 10MPa, it is more pressure-resistant than other polyethylenes, and can transport gas and liquid at high pressure. Generally speaking, SDR (SDR = Nominal outer diameter / Nominal rule thickness) When ranking, the higher the SDR, the higher the ranking.
4 The excellent function of the blasting pipe depends largely on its semi-crystalline layout. Its short-term strength, impact strength, tensile strength, and hardness are mainly limited by the crystalline phase of the data; and its long-term strength, such as environmental stress cracking resistance, depends on chain entangled molecules in the amorphous region. The more interlacing molecules the function is, the better.