Product Description
OEM Custom Bimetallic Nitriding Parallel Twin Screw Barrel for Twin-Screw Extruder Machine
| Application |
Film blower, Cast film machine |
| Screw barrel material |
38CrMOALA, SACM645, Sprayed dual alloy, etc. |
| Screw diameter |
Φ30-Φ150 |
| Aspect ratio |
L/D=15-35 |
| Overall hardness |
HRC58°-68° |
| Nitriding depth |
0.4mm-0.7mm |
| Straightness |
0.015mm-1000mm |
| Scope of application |
PE, PO, PP, PVC, TPU, PBT, PET, PLA, etc. |
| Technical indicators |
Conditioning time 72H, Tempering hardness HB260-290, Gas vacuum nitriding time 168H, Nitride hardness HRC62-65° |
| Processing method |
Vacuum nitriding, high frequency quenching, alloy spraying, electroplating hard chromium layer |
| Condition |
New |
| Warranty |
1 Year |
| Package |
Wooden box |
| Notice |
We only accept product customization, please be sure to contact me before placing an order. |
Product Description:
The screw is the main core component of the injection molding machine. The quality of the screw determines the quality of the product.
The plasticizing screw of the injection molding machine has the functions of conveying, melting, mixing, compressing, metering and exhausting, and is a key factor affecting the quality of plasticizing.
Injection molding machine screw material classification:
1. HPT fully hardened powder alloy screw
It is made of tungsten-cobalt powder alloy tool steel and is integrally hardened by a special process. The overall hardness of the inside and outside of the screw is the same, reaching about HRC65°. It is suitable for processing various transparent products, precision products, and special high-temperature and highly corrosive plastics such as LCP, PES, and PPA with fiber added.
2. Double alloy screw
Use SACM645 and 38CrMoAlA as the base material, and then ion spray weld the tungsten carbide nickel-based alloy on the crest or groove. The surface hardness of the screw is around HRC60°. It is suitable for processing various transparent products and engineering materials such as PA6 and PA66 with fiber added.
3. Electroplating screw
SACM645 and 38CrMoAlA are used as base materials. After forming, the outer surface is electroplated with a layer of hard chromium, nickel, titanium and other elements. The hardness is around HRC60°. Suitable for processing PC, PMMA, PET transparent materials and corrosive plastic U-PVC materials.
4. Stainless steel screw
The material is 9Cr18MoV special stainless tool steel, which adopts overall quenching + overall hardening treatment. The overall hardness is around HRC55°.
5. SKD61 screw
Made of Hitachi SKD61 material and processed with a special process, the product has good toughness and strong torsion resistance.
6. Ordinary nitrided screw
It is made of SACM645 and 38CrMoAlA as the base material and processed with a special process. The depth of the nitride layer is 0.5-0.8mm and the overall hardness is HV980~1080°. Suitable for processing ordinary plastics, such as PP, ABS, PS, AS, PVC and other ordinary plastics.
Injection molding machine screw segmentation description:
The screw of an injection molding machine can generally be divided into a feeding section, a compression section, and a homogenizing section (also called a metering section). (Note: Different screws have different proportions of the three sections, different screw groove depths, and different screw bottom diameter transition forms)
1. Injection molding machine screw feeding section
The depth of this section of the screw groove is fixed, and its function is responsible for preheating, conveying and pushing plastic solids. It must be ensured that the plastic begins to melt at the end of the feed section.
2. Injection molding machine screw compression section
This section is the groove depth of the tapering screw, and its functions are melting, mixing, shearing compression and pressurized exhaust of plastic raw materials. The plastic will completely dissolve in this section and the volume will shrink. The design of the compression ratio is very important.
3. Injection molding machine screw homogenization section
This section has a fixed groove depth for the screw groove. Its main functions are mixing, melt transportation, and metering. It must also provide sufficient pressure to maintain a uniform temperature of the melt and stabilize the flow rate of the molten plastic.
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Company Profile
Guangzhou Kaixi Wisdom Valley Technology Co.,Ltd was established in 2005. "Kaixi makes and serves the whole world" is the common pursuit and goal of all Kaixi people. Our company will honor our promise to customers with the business philosophy of "better technology, higher quality and better service", and make Kaixi manufacturing become the benchmark of Chinese manufacturing and go global! Welcome people from all walks of life to visit our company for on-the-spot investigation and negotiation.
We are factory and doing traditional export business more than 15 years!
If you have any demand for our products, please feel free to contact me.
FAQ
Q1: Are you trading company or manufacture?
A: We are metal factory only for oversea trading.
Q2: How long is your delivery time?
A: Generally 5~10 days for sample.and 20-40 days for mass production. it is depends on order quantity.
Q3: Do you provide samples?Is it free or extra?
A: Yes, we could offer the sample for free charge once customer place batch order.
Q4: What is your terms or payment?
A: Payment<1000USD shall be 100% T/T in advance. Payment>USD1000, 50% T/T in advance, pay balance before shippment.
Q5: Can you produce order and according to the samples?
A: Yes, we can produce by your samples .
Q6: How to get the quote ?
A: Please send your 3D drawings(PDF,STP, IGS, STL...) to us by email with the material, surface treatment and QTY, then offer the best price for you within 12 hours.
Q7: What are your shipping way?
Sample order: by air freight with 7-15 days.
Batch order: by sea ship( or by train to Europe) with 30-40 days.
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