concial twin screw and barrel

技术参数

Technical Specification

调质硬度: HB280-320

Hardness After Hardening & Tempering: HB280-320

氮化硬度: HV850-1000

Nitrided Hardness: HV850-1000

氮化层深度: 0.50~0.80mm

Nitrided Case Depth: 0.50~0.80mm

氮化脆性: ≤二级

Nitrided Brittleness: Less Than Grade 2

表面粗超度: Ra 0.4

Surface Roughness: Ra 0.4

螺杆直线度: 0.015mm

Screw Straightness: 0.015mm

氮化后表面镀铬层硬度: ≥900HV

Surface Chromium-Plating’s Hardness After Nitriding: ≥900HV

镀铬层厚度: 0.025~0.10mm

Chromium-plating Depth: 0.025~0.10mm

双合金硬度: HRC50-65

Alloy Hardness: HRC50-65

双合金深度: 0.8~2.0mm

Alloy Depth: 0.8~2.0mm

材料和工艺

Materials & Processes

优质38CrMoAlA(JIS SACM645)

Quality 38CrMoAlA(JIS SACM645)

优质双相不锈钢

Quality Duplex Stainless Steels

42 CrMo(JIS SCM440)

42 CrMo(JIS SCM440)

40Cr

40Cr

锌3#钢

GH113

SKD11

SKD11

SKD61(H13)

SKD61(H13)

Cr12MoV

Cr12MoV

优质粉末冶金材料

Quality Powder Metallurgy Raw Materials

冷、热喷涂硬金属工艺

Cold/Thermal Spray Hard Metal Process

先进渗氮工艺

Advanced Nitriding Process

耐腐蚀、耐磨双金属喷涂工艺

Corrosion & Abrasion Resistance Bimetallic Spraying Process