Mechanical pouring of Polyurethane screen

As a Mining Plant High Frequency Screen Supplier, share with you. There are three main casting methods for polyurethane sieve:

1. Mechanical pouring of Polyurethane screen

In the casting machine, tank A is a prepolymer, tank B is a chain extender, and a heating system is initiated to make the materials A and B reach the requested temperature, and then the speed and displacement of the metering pump are dispatched to reach the planned mixing ratio , Initiate the pouring switch, after the A and B materials are mixed in the mixing chamber at high speed and uniformly, the pouring can be carried out. When the pouring is completed, the A and B material tanks automatically switch to the self-circulation state. Mechanical pouring has the characteristics of accurate ratio, stable measurement; uniform mixing, no bubbles; stable temperature, accurate and reliable. Prepolymer preheating, defoaming, chain extender melting, and prepolymer and chain extender metering, mixing and pouring are all ended in the casting machine through computer active control, which can achieve continuous production and high output power The quality of the goods is stable and suitable for the production of large quantities and large and medium-sized products.

Polyurethane Fine Screen for Mining

2. The manual pouring of polyurethane sieve

Mix the weighed prepolymer and chain extender evenly under certain conditions, then write it into the mold, and heat and vulcanize it for 1 hour to release the mold. Manual pouring has the characteristics of low investment, low cost, and simple sensitivity.It is suitable for the production of small and medium-sized products, but due to the short pouring time, it is easy to carry bubbles, the mixing is not easy to uniform, the output power is low, and the labor intensity is large, resulting in poor product quality Stable, therefore, polyurethane elastomer casting is usually used in the production of polyurethane sieve

machine.

3. Vulcanization and curing of polyurethane screen

The vulcanization process of the product in the mold is called molding vulcanization, and its temperature can be selected as high as possible without damaging its chemical structure to accelerate the chain extension crosslinking reaction, shorten the demolding time, and improve the mold and equipment utilization .

Some advantages of polyurethane screen:

1. Polyurethane sieve plate can add various skeleton materials in the molding process to prolong the service life.

2. Polyurethane sieve plate is light in weight and easy to load and unload on site.

3. Good elasticity of polyurethane sieve plate can increase the beating frequency of materials and improve the screening efficiency.

4. Polyurethane sieve plate has high resistance, which can reduce noise.

5. Polyurethane sieve plates can be designed with different hole shapes according to the shape of the material.

Our company also has Polyurethane Fine Screen for Mining for sale, please contact us