Stainless steel metal sand

1. Metal sand because of its high degree of special shape, large specific surface, strong ability of filter impurities, thus extend the service life of the component, reducing the use of accessories related to components(filters, washers, etc.),the cost of cleaning components and loss of manpower and loss of production capacity.

2.Reduce the spinning filament and breakage rate.The irregular sharp features of stainless steel metal sand are not comparable by conventional filtration materials.This high hardness of the sharp angle is not easy to deform even in the 40MPA pressure, and can pierce the bubbles in the melt and block foreign body in the filtration process and agglomerate particles and improve the accuracy of filtration.

3.The component pressure is stable.The pressure process is slow and smooth, to avoid pressure instability caused by fluctuations in production, quality of instability.Metal sand will not change its shape with the melt pressure and temperature changes.

4.Improve the melt uniformity and spinnability. Stainless steel is a good heat conductor, able to ensure temperature uniformity of the high temperature melt in the component sand chamber.

5.Chemical stability will not make it produce adverse reactions with the polyester melt.

6.Unlike glass beads, sea sand, emery powder, it is easy to use, without the need of being cleaned and dried.Having been cleaned in high pressure in the process of production, the products from our factory are in dust-free state.

Product specification

Comparison of technical parameter and performance of metallic sand

Bulk density(Unit: g/cm3)

Inspection Screen Standard:Aerospace Industry Department No540

Note: A. Bulk density test method: an empty beaker of 100 cubic centimeters placed on the platform, the metal sand of the corresponding specifications in the distance from the beaker 20cm place freely fall into the beaker, until the beaker filled with slight overflow sand, and a flat ruler is scraped along the cup mouth, and then it is weighed. The scale of the net weight divided by the volume of the beaker is the bulk density of this inspection.

B. The above bulk density for reference only.The actual use of the actual density of the production is set according to each enterprise’s production specifications and the requirements of the components pressure. Good specifications and the corresponding bulk density set by both sides can not be arbitrarily changed, and also used as an important indicator of the inspection of both sides of the purchase.

C. Besides commonly used specifications, distribution ratio can be selected according to customer requirements.

Performance comparison(60-80mesh)

Use of metal sand 

1. The stainless steel metal sand has been strictly cleaned and screening in the production process, and there is no need to clean and filter again.

2.Before use, please see the specifications to confirm the correct before assembly.

3.After the end of each use, if there is the end of the metal sand, please put it inside the bag buckle to avoid dust and debris in and affecting the normal use.

4.It can be used in several specifications stratification, and can also be used in a single specification.In the use of several specifications with a corresponding single-layer stainless steel mesh separation between each layer filter effect will be better. The closer to the head of the spinneret, the higher the mesh(the finer the sand)

5.According to the requirements of the production process, scale good weight of metal sand into the sand warehouse, with copper rods tapping around the sand warehouse outside the shell sand by the sinking to increase its density, and then the stainless steel bar slightly smaller than the diameter of the sand (Rod length of 15 cm or so must be smooth and smooth)flat end pressure the sand surface of the metal sand in the sand warehouse clockwise or counterclockwise rotation plus the pressure of 10 kg around so that the surface of the metal sand is even and let the density as much as possible to avoid the uneven density in the same sand warehouse, uneven thickness of the phenomenon of silk.

6.In the assembly of sand, the components must be filled with metal sand, and gaps are forbidden.The assembly is particularly important especially for the combination of several specifications.

7.When using our company's metal sand, if the component boost speed is relatively slow, even without boost for a long time, it is the normal phenomenon; when the pressure rose to the highest pressure after the process, please replace the components in time to avoid production of substandard products.

8.This product is a one-time product, after use it can not be used again.

9.If our company's metal sand components are used, due to its longer service life, the enterprise is to do a good job on the machine tracking records to facilitate the quality management to the approved use of the best replacement cycle(because the current chemical fiber enterprises can not be installed on each bit component pressure gauge),while doing a good job of spinneret dressing regularly to ensure the stability of the quality and production of the normal continuation of the line.

Some excellent performance of stainless steel metal sand in the production

In the spinning production, because of the excellent heterotypic structure of metal sand caused by the high porosity, making the capillary sand adsorption effect better than sea sand, so the filtration effect and the use of components is significantly better than the sea sand.In conventional spinning, the use cycle of metal sand components is generally greater than 40 days, and the longest use of the cycle can reach 90 days.

Ensure stable production.In FDY, porous fine denier, cation, PBT, PTT, nylon and other differentiated and functional fiber spinning, because of the high porosity of the metal sand and the unique sharp corners, it is evident in the production that metal sand is superior to sea sand in the production stability, and good product quality, especially in the production of functional fine denier porous fiber or differentiated fiber production, whose performance is more prominent.