Precautions and equipment requirements for spraying polyurethane rigid foam in cold storage

The cold spray polyurea and spray gun were shipped to France on August 3, 2020

During the polyurethane foaming process, the foam has shrinkage, crispness, too soft, heartburn, cracking, smoke and other problems. How to analyze the causes.During the polyurethane foaming process, affected by the construction conditions, foaming equipment, construction technology and ambient temp

As an excellent benchmark in the machinery industry of Made-in-China, on the afternoon of August 25th, Mike Jiang, the head of Shandong Hitop Group, led international trade managers May zhou and Amy Bu to visit the headquarters of Made-in-China.The visiting group first listened to a special report f

1. Feed pump failure1. The lift pump does not workThe oil cup is too tight to lock the lifting shaftThe crystals on the lifting shaft jam the lifting pump, making the lifting pump unable to workThe rubber of the reversing rubber cover falls off, and the "O" seal is not tightly sealed, making the lif