Alloy elbows are used and implemented in different fields and professions to ensure the safety and non-pollution of water, and are used in different places to play an important role. It has excellent mechanical and physical properties. The strength of the alloy compression tee is very high, which is 2 times of galvanized pipe, 3 times of copper pipe, and 8-10 times of PP-R pipe, and it can be very good at oscillating impact, and it has the characteristics of no leakage, no burst, fireproof and earthquake resistance after being connected, so it is very safe and reliable; together with good heat preservation performance, it is especially suitable for hot water transportation and plays an important articulation effect. With a reliable and safe connection, easy and convenient construction, clean and environmentally friendly performance, small loss of flow and pressure, strong system compatibility, both open and concealed installation, free of renewal and protection, superior economic performance, wide range of application and other characteristics, alloy elbow for hot and cold water, direct drinking water, heating, air conditioning, fire, gas and other civilian low-pressure fluid transportation, can also be used for medicine, beverage, food, chemical and other professions of low-pressure fluid transport.
In the alloy elbow pushing process, in general the wall thickness should not change significantly, but if the tooling reasons, there are places where the phenomenon of wall reduction will occur, so the general lifting material, the wall thickness to add some margin, such as the elbow is 8.18mm wall thickness, generally mention about 8.5mm tube, to prevent the pushing system due to local reduction in thickness and super poor. After the rectification of the shape, the elbow’s outer diameter and wall thickness dimensions have reached the requirements. Alloy elbow site installation is extremely convenient. The installation time is only 1/3 of the welded or sleeve wire, which shortens the construction period and cost and avoids water leakage. Elbow in the use of articulation in accordance with certain methods and principles of control and use, with outstanding installation characteristics and value, the need to constantly use certain methods to use.
Alloy elbow cleaning: 1, according to the requirements of the alloy elbow and surface conditions using alkaline washing, water-soluble detergent, chlorine solvent sandblasting, shot blasting and other methods to clean; 2, alloy elbow generally does not use the method of acid cleaning to clean. Alloy elbow correction: 1, alloy elbow using static load for correction, generally should not be local knock; 2, alloy elbow correction should be lower than the original tempering temperature for stress relief annealing.
Alloy elbow quality inspection: ① alloy elbow according to the corresponding technical documents specify the items and requirements to do the inspection; ② when the alloy elbow mechanical properties are not qualified, repeat heat treatment, but the number of repeated quenching or solid solution generally does not exceed two. Supplementary tempering of the workpiece is not counted as repeated treatment; ③ quenching state or low-temperature tempering of the alloy elbow, quenching should be preheated, annealed or high-temperature tempering before repeating; ④ original heat treatment records should be properly stored for inspection.
Alloy elbow is used in an unusually wide range of.
1, manganese steel alloy elbow because manganese steel has excellent features to withstand impact, extrusion, material abrasion, etc., is usually used in concrete conveying pipeline, slurry conveying pipeline and other wear and tear consumption of the more severe pipeline. And high manganese steel alloy elbow is used in the fluid flow is more intense, the impact is stronger in the pipeline.
2, nickel steel alloy elbow is usually used in the high concentration of oxidizing acid (elbow production sulfur alloy elbow is a variety of elbow a class of the system) and other normal temperature transport pipeline, but in the reduction of acid transport pipeline will be severely corroded, unless the concentration of hydrochloric acid is very low;
3, martensitic alloy elbow below 650 ℃ has a high temperature strength, oxidation resistance and resistance to water vapor corrosion power, but the weldability is poor. Therefore, often used in high-temperature water vapor transmission pipeline, water and gas pipeline.
