The passivation technique of punching elbow

TIME：2019-05-25

Stamping elbow materials not only have qualified creep curves, and its pipe price moderate, relative to other varieties is the product of construction convenient, quick, belong to the present stage the most reliable connection form standard mutual investment in the form of hot melt connection, pipe parts size is much bigger than the size of the same specifications the inner diameter of the pipe, in the system due to no local reducing mechanical connection mode, the system fluid resistance is relatively small.

1. Long-term pressure resistance performance, only from the design stress, the compressive performance of the punching bend is the best. However, due to the influence of various factors, the actual wall thickness of the floor heating tube is usually only 2mm. In this wall, all kinds of pipes can meet the requirements of floor heating, and the pressure resistance of the punching elbow is easy to show.

2. Low temperature heat resistance impact: PE- RT and PEX products have good low temperature impact performance. In winter construction, the pipe material is not easy to be impacted and ruptured, thus increasing the flexibility of construction arrangement.

3. Environmental protection: PE-RT can be recycled and not pollute the environment. And PEX cannot be recycled to produce secondary pollution.

The blanking process can be divided into wet and dry. There are many types of concrete. Stamping elbow passivation effect depends on both the passivation process, also depends on the stamping elbow material itself, the influence factors of concrete have stamping elbow contains elements of metallographic structure, stainless steel, stainless steel processing state, etc. In the component element, chromium and nickel belong to the element with strong passivation, and the passivation of iron is secondary. Therefore, the higher the content of chromium and nickel, the stronger the passivation of stainless steel. Austenitic, iron element size stamping elbow has a uniform organization, can better passivation sex, markov shape stainless steel after heat treatment to strengthen, its microstructure is heterogeneous organization, thus passivation is not strong.