Product Description
With professional device and fine workmanship, each of screw and barrel all made from high quality alloy steel(38CrMoALA), and are chataceterized with high anti-friction, anti-corrsion and long life after nitriding by anion, and it can replace the imported products.
Every piece of qualification has strictly carry out the JB/T8538-1997 and ISO9002 standards.
Screw type: gradual change, mutant, undaform, double screen, cone,bypass flow, separate flow, exhaust, dowel, variant, blend, double-end, triple head, multi-head, pelletizing and so on.
Compression ratio of screw and barrel can be designed according to the various products and formula.

Product Feature
1、Tempering hardness: HB240?to 280?
2、Nitriding hardness: HV850?to 1000?
3、Nitriding deepth: 0.45 to 0.7mm
4、Nitriding brittleness: less than second level
5、Surface roughness: Ra0.4
6、Screw straightness:0.015mm
7、Surface hard Chrome degree after nitriding: be equal or greater than 900 HV
8、Thickness of Chorm plating layer: 0.05 to 0.10mm
9、Alloying deepth: 0.8 to 2.0mm
10、Bialloying hardness: HRC 56 to 65 (alloy adopts nickle base alloy )

Product Specification / Models
Specifications for screws and barrel: ?45/90、?45/100、?50/105、?51/105、
?55/110、?60/125、?65/120、?65/132、
?68/143、?70/140、?75/150、?80/143、
?80/156、?92/188。

Application
this series of screws and barrels are used in plastic extruders

Other Information
1、materials:① 38CrMoALA(JIS SACM645)
② 42CMo(JIS SCM440)
③ 9Cr18MoV
④ CW6Mo5Cr4V2
2、heat treatment
2、1 Nitriding treatment
2、2 Electroplate hard Chrome layer
2、3 High frequency hardening
2、4 Plating anti-corrsion and anti-friction bimetal layer
6、Vacuume hardening

Optional Information
- Payment : T/T
- Delivery : shipment
- Origin : China
- Minimum Order : 1
- Packaging : wood box
- Samples : Charge