 |
 |
|
|
|
| |
|
|
|
 |
What is the bimetallic Screw？ |
|
| |
|
There is an armouring layer on the
top of screw thread, or on the surface
of all over the screw working surface. It
has a minimum contact wear ratio then it is running on the inside of cylinder. The base
material is one kind of high-strength and weldable, nitridable metal. Between this armouring
layer and the base material, there is perfect material bonding. These two kinds of material
take different functions in hand, but form an uniform whole - The bimetallic screw. |
|
|
| |
|
| |
|
|
双金属螺杆的三种形态 |
材料匹配磨损比较 |
| |
|
|
|
|
| |
|
|
|
Four kinds of alloys for bimetallic screw |
|
| |
Allow Name |
Hardness(HRC) |
Properties |
Abration resistant |
Corrosion resistant |
FX1 |
38~42 |
★ |
★★★★ |
| FX2 |
45~50 |
★★ |
★★★★ |
FX3 |
52~56 |
★★★ |
★★★★ |
FX4 |
58~60 |
★★★★ |
★★★★ |
Armouring thickness between 1.0 and 2.0 mm |
|
| |
|
|
Manufacturing range of bimetallic screw |
|
| |
Screw Diameter |
￠20~￠400 |
Screw Length |
≤7500 |
|
|
|
| |
|
|
Base material of bimetallic barrel and screw |
|
| |
Base material |
Hardness |
Tensile stength |
Principal application |
S 45 C（45#） |
HS 24~28 |
40~50 kg f/mm |
Extruder |
| SCM 440（40Cr） |
HS 28~40 |
65~80 kg f/mm |
Extruder,
Injectionmolding machine |
SACM645 （38CrMoAlA） |
HS 28~40 |
70~80 kg f/mm |
Extruder,
Injection molding machine |
SNCM 439 （40CrNiMoA） |
HS 35~45 |
70~85 kg f/mm |
High-pressure Injection
molding machine |
SUS 316 （00Cr17Ni14Mo2） |
HS 18~28 |
45~60 kg f/mm |
For corrosion resistant parts |
|
| |
|
