Rayon Chemical Fiber Spinning Tantalum filter screen

PRODUCT MATERIAL

Tantalum coating : Antistatic

TECHNICAL QUALIFICATION PARAMETER

1 Test pressure of spinneret, see this table.(MPa)

2 Spinneret finished hardness is more than HV180.

Note: the weight of the test is 0.98N and the holding time is 15s.

3 Surface roughness

a. Spinneret surface roughness Rz ≤ 0.4μmm

b. The rest of the surface roughness Rz ≤ 3.2μmm

4 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.

Note:

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.

5 For the hat-shaped spinneret, the flatness tolerance of the spinneret surface and the edge of the hat is shown in following table. (mm)

6 The spinneret holes are arranged evenly, and the straightness tolerance of the channel is 0.15mm.

A. For hat shape spinnerets, the deviation of the spinneret circle distance and the deviation of the same pitch hole distance both are ±0.03mm;

B. For tile-shape spinnerets, the deviation of the distance between the adjacent spinneret holes is ±0.05mm.

C. For tile-shape spinnerets, the spinneret punching zone is symmetrically distributed on the spinneret, and the symmetry tolerance is 0.50mm.

7 Spinneret thickness b, when spinneret surface area is not less than 1256mm²: allows a place of 0.02mm per 100mm² in the ultra poor; when the total area is not less than 4298mm²,  allows a place of 0.02mm per 100mm² in the ultra poor.

8 The spinneret hole-shape and bore diameter tolerance

8.1 The circular tolerance of spinneret hole is 0.003mm, and the circularity tolerance of viscose filament spinneret hole is 0.002mm.

8.2 In addition to viscose filament spinneret, the total number of defective holes is not greater than 30% of the total number of holes.

8.2.1 The total number of holes whose deviation on spinneret hole d over 0.002mm, is no more than 3‰ of the total hole number.

8.2.2 Aperture deviation from 0.006~0.5dmm discontinuities is no larger than 0.1‰of the total hole number.

8.2.3 The burr hole number is less than 2% of the total number of holes, for burr height is less than or equal to 0.003m.

8.2.4 polygon, notch and jagged hole (defects value less than 0.015mm), is not more than 1% of the total number of holes.

8.2.5 Oblique hole whose value A is less than or equal to 0.005mm , must be less than 30% of the total number of holes.

a. coincidence (1) is the positive hole:

b. coincidence type (2) is an oblique hole:

c. When h is less than or equal to 2d,

In the formula: B, d, h, as shown in following figure

8.3 Viscose filament spinneret holes is not allowed to have defects

9 Inspection rules

9.1 Before leaving the factory, the spinneret finished by the manufacturer must pass inspection in accordance with this standard, and accompanied by a certificate of quality.

9.2 It is required to use 100 times the microscope to test the 6~3 technical requirements of spinneret.

9.3. When the dirty hole and burr hole can not distinguish, can be regular cleaning, such as after repeated cleaning can not remove dirt, then regard as burr hole.

9.4 when the finished product is handed over, the factory may inspect and inspect the spinneret finished products according to the technical requirements specified in this standard.

Each spinneret has passed theabove test before leaving the factory to ensure quality. And we can provide the test record.

Friendship tips:
Our acceptance standards are strictly better than or reference to the domestic industry standards,
If you have more precise requirements, please contact customer service, price negotiable. Thank you!

PRODUCT USE

The spinneret I produced has hat-shaped, tile-shaped, hoop-shaped, globular spinneret, suitable for viscose, polyvinyl alcohol, acrylic yarn, silk cord, short fiber and other various spinning needs.

High precision micro porous

The micro hole machining is done in the air cleaning room with high precision machine tools with excellent dimensional accuracy, roughness and geometry.

Reliable use, good spinning performance

The material used for making spinneret is made of advanced materials such as gold, platinum alloy and tantalum. After special heat treatment and surface coating treatment, it has excellent corrosion resistance, wear resistance and pressure resistance.

Packaging Details
1,packing in poly bag

2,put into the cartons

3,we also can pack the goods as your request

The finished product will be subject to final safe packing. By Sea , By DHL , TNT, UPS, FedEx Express to send products to customers around the world.

FAQ                                                                                                            
1. Can we get your samples?
Yes, you can. We could offer the sample by payment of charge.
2. Can you produce spinnerets according our design?
Yes, We can open new models according to your own design, if your quantity is sufficient or the model fee is paid.
3. What is the normal lead time?
For stock products, we will send goods to you within 2~3 days after we receive your payment.
For no inventory, the delivery time is 6~25 work days after we receive your payment or according to the order quantity
5. What is your shipping terms?
For small trial order,FEDEX, DHL, UPS, TNT etc door to door service can be provided.
For larger order,we can arrange shipment by sea or air according to your requirement.
We will choose the best shipping way for you according to your detail requirements.
6. How do you control the quality?
We do Industry standard test before packing.
7. If any defective spinneret, how can you settle it for us?
We will send 1% more bottles as the spare together with your order. And also will send the 1:1 replacment together
with your next order if the breakages exceed the quantity of spare bottles.
8. What is the Payment ?
T/T, Western Union,PayPal,Alipay;For small trial order,100%deposits; For larger order, 50% deposits; 50% balance before deliverying.