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What Are the Inspecting Items for Rubber Expansion Compensator?

2017/9/28 14:45:52      Click£º

Henan Lanphan regards product quality as the basic foothold of company. Each rubber expansion compensator will be strictly inspected before leaving factory and delivery to customers. What inspecting items should be done to the rubber expansion compensator? Basically there are four inspecting items for rubber expansion compensator.


rubber expansion compensator

Inspection of semifinished rubber expansion compensator: 

each batch will be inspected, mainly inspecting the inner and exterior rubber layer, including adhension strength, tensile strength, air aging coefficient, elongation at break, pull-apart permanent deformation, brittleness temperature, acid and alkali resistance coefficient.

Inspection of appearance for finished rubber expansion compensator:

covering rubber sphere color, smooth, impurity, leafing, surface free of bubbles, crack and damages.

Inspection of finished rubber expansion compensator:

hydrostatic test includes lateral and axial displacement testing, deflection angle testing, water pressure test for strength, sealing test.

1.Water pressure test for strength: 1.5 times of nominal pressure, maintain pressure for 10-miniute time, no leakage.

2.Sealing testing: 1.25 times of nominal pressure, maintain pressure for 10-minute time, no leakage, cracking or abnormal deformation.

3.Lateral, axial and angle displacement testing: stretch or compress to regulated expansion quantity and angle, then fix it and imposing working pressure to the rubber expansion compensator, maintain pressure for 10 minutes, no leakage, cracking or abnormal deformation.

Inspection of rubber expansion compensator flanges:

1.Surface Inspection: outside surface is smooth and no rag, corrosion, air hole, cracking, mechanical injury, etc..

2.Welding Inspection: welding line is smooth and no air hole, cracking, solder skips.

3.Flange Processing Inspection: strictly according with company regulations.

4.Drill Hole Inspection: all bolt holes uniformly distributed on center circle diameter.

5.Anticorrosion Inspection of rubber expansion compensator: we use high quality oil painting to meet local environment of customer. Primer uses epoxy zinc rich primer, inorganic zinc-rich primer; intermediate paint use epoxy micaceous iron or epoxy resin painting; finishing paint use acrylic rubber, chlorinated rubber or polyamine painting.