Hollow Fiber Spinneret High Strength Stainless Steel For Textile Machinery
1. Spinneret finished hardness is more than HV180.
Note: the weight of the test is 0.98N and the holding time is 15s.
2. Surface roughness
a. Spinneret surface roughness Rz ≤ 0.4μmm
b. The rest of the surface roughness Rz ≤ 3.2μmm
3. Naked eye significantly pits, scars, creases and wavy are not allowed in the surface hole area of the spinneret which spinning short filament , non porous area allows a few defects.
The spinneret surface of spinning long filament is not allowed to be defective.
a. The hole area refers to the inner side of the hole group, and the edge of the outermost hole of the hole group adds a pitch-row to the enclosed area.
b. In addition to the above areas, the rest section is nonporous area.
4. The spinneret holes are arranged evenly, and the straightness tolerance of the channel is 0.15mm.
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