Technical Information
Main Base materials	1.38CrMoAlA (SACM645)	Main Alloy Materials	1. Ni-based alloy/Deloro alloy
	2. SKD-61 (Special Tool Steel)		2. Tungsten carbide/Wolfram carbide
	3. 42CrMo (Ultrahigh StrengthSteel)		3. NiCo-based alloy
	4. DC53 (Cold WorkDie Steel)		4. Fe-based alloy
	5. W6Mo5Cr4V2 (High-SpeedToolSteel)		5. Co-based alloy
Processing Technics	1. Heat treatment	Technical parameters	Nitriding layer depth:0.5-0.8mm
	2. Quenching		Nitrided hardness:900-1000HV
	3. Nitriding treatment		Bimetallic layer depth:3 mm
	4. Bimetallic alloy welding for screw		Bimetallic hardness:57~69HRC
	5. Bimetallic alloy centrifugal casting for barrel		Hard-chrome plating hardness after nitriding:≥950HV
	6. Hard-chrome electroplating		Chrome-plating layer depth:0.03-0.09mm
	Linearity of screw:0.015mm		Surface roughness:Ra 0.4

This parameter is based on our domestic machines and is just for your reference. If you have your own parameter, we can also make it.
 
Packaging Details
Injection molding screw barrel 
1. Be brushed anti-corrosive oil on screw barrel. 
2. Packed with film. 
3. Packed in the wooden.