廊坊What are the fault analyses of wear marks on the sealing surface of container machinery?

What are the fault analyses of wear marks on the sealing surface of container machinery?

The main conclusions are as follows:

(1) Damage expansion: indicates a serious imbalance between the pump and equipment, for the following reasons:

A. Bearing damage

B. Shaft vibration or deformation

C. Axis bending

D. Vibration caused by cavitation of the pump

E. Inconsistent lotus root connection

F. Serious changes have occurred in the pipeline

G， The sealing ring is inclined.

(2) Damage sign becomes smaller: If the damage sign is narrower than the total width of the two sealing surfaces, it indicates that the pressure on the sealing surface is too high, and the pressure or temperature causes deformation of the sealing surface.

(3) No signs of wear and tear:

This means that the sealing surface is not bonded. Check the compensation mechanisms such as torsion springs to avoid deviation or blockage.

(4) There are no signs of wear on the sealing surface, but there are bright spots.

When the sealing surface expands and contracts, bright spots and wear marks will appear. If the pressure is too high, if the pressure cap bolts are not twisted or clamped, or if the pump surface is rough, bright spots will form. When using two nuts, insufficient rigidity of the outer cover and deformation are one of the reasons for the bright spot.

The emergence of this symptom indicates that once you drive, the seal will leak water.

(5) The protruding surface has a cutting edge:

This is because the protrusion is too open and will crack when closed. Flash evaporation is a common cause in surface separation, especially when there is condensed water on the hot water system or liquid, which rises from the liquid to the vapor and then separates the surface. (Gasification of refrigerant can cause)

Sealing metal components such as torsion springs, fixing screws, transmission components, and metal sleeves may be the root cause of ineffective sealing. The corrosion of torsion springs under alternating stress is a key issue. Due to the fast corrosion rate of metals under stress, non embroidered steel springs are prone to intergranular corrosion by fluoride. There are a large amount of fluoride in the world, so there are many fluorides in the world. Therefore, some overseas departments suggest not using stainless steel springs, but using corrosion-resistant Hastster carbon steel torsion springs. In addition, spring fatigue caused by improper installation is also one of the reasons for the malfunction.