Specifications:

 

24/52, 35/76, 45/90, 45/100, 50/105, 51/105, 55/110, 55/120,58/124, 60/125, 65/120, 65/132, 68/143, 70/135,70/140, 75/150, 80/143, 80/156, 92/188, 105/213

 

The above specifications are standard and can be customized according to customer requirements.

 

Screw compression ratio can be designed according to different products and different formulations.

 

 

 

Substrate material:

 

1)38CrMoAlA(JIS SACM645)

 

2)42CrMo(AISI 4140)

 

3)4Cr5MoSi V1 (JIS SKD-61)

 

 

 

 

 

Treatment process:

 

heat treatment

 

Nitriding treatment

 

 

 

Technical parameters:

 

Nitriding depth: 0.50mm-0.80mm

 

Nitriding hardness: 900-1000hv

 

Nitriding brittleness: < = grade 1

 

Surface roughness: RA 0.4

 

Screw straightness: 0.015mm