Specification:
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
The above are standard specifications, we can customize according to customers' requirements.
The compression ratio of screws can be designed according to different products and ingredients.
Base materials:
1)38crmoala(jis sacm645)
2)42crmo(aisi 4140)
3)4cr5mosi v1 (jis skd-61)
4)9cr18mov
5)hpt
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000hv
Nitrided brittleness: less than grade 1
Surface roughness: ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: ¡ý 950hv
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Slushing oil coated& film wrapped in wooden case
Supplier: Engineering components for automotive, electrical, construction, transmission tower projects , rail road components hardware like different types of washers, circlips & retaining rings, clips , clamps ,hose clamp , spring band clamps ,metal pressed parts, wire form parts.
Services: Manufacturing & sourcing agents
