原材料应用及技术参数 Material and Technical Parameters
◎调质硬度	HB260~320
◎氮化硬度	HV950~1000
◎氮化深度	0.50~0.7mm
◎氮化脆性	≤二级
◎表面粗糙度	Ra0.4
◎螺杆直线度	0.01 5mm
◎氮化后表面镀硬铬度	HV≥950
◎镀铬层厚度	0.05~0.10mm
◎合金深度	0.8~2.0mm
◎双合金硬度	HRC56~65
(合金采用[铁][镍][钨][钼]基合金)

螺杆原材料应用/ Raw material application:

原材料/ Raw material:	成品处理要求/ Finished product treatment reqirements
38CrMoAIA, SACM645，42CrMo	渗氮处理/ Nitriding treatment
42CrMo, AISI4140	电镀硬铬层/ Chromed
Cr12MoV, SKD11, SKD61, YXMI, EFZD, DC53, SKH55, SKH59, SKH58, SKH51, SKH-9, ASP60, ASP30，ASP25, CW6Mo5Cr4V2	合金钢，高频淬火/ Alloy steel ,High frequency quenching
4Cr5MoSiV1, SKD-61, SKD-11	喷涂双金属合金层再渗氮处理/ bimetallic layer ,and nitriding treatment
YPT72, DAC-MAGIC, 4Cr5MoSiV1	双合金属整体包覆/ Cover bimetallic
HPM38, SI36, SUS440, 9Cr1 8MoV	不锈[铁]钢，高频淬火/ Stainless steel [iron] ,High frequency quenching
GHII3	高温工作自然硬化/ High temperature, hardening work nature

机筒原材料应用/ Barrel raw material application

原材料/ Raw material	成品处理要求/ Finished product treatment reqirements
38CrMoAIA, SACM645	渗氮处理/ Nitriding treatment
Cr12MoV, Cr12	合金钢,高频淬火/ Alloy steel, high frequency quenching
38CrMoAIA, SACM645, 40Cr, AIS14140, 42CrMo	内孔离心浇铸双合金属/ The inner hole centrifugal casting bimetallic
GHIl3	高温工作自然硬化/ High temperature ,hardening work nature