Zhoushan Jianghai Screw Machinery Manufacturing Co., Ltd.
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    599 Xingzhou Avenue, Jinghai District, Zhoushan
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Bi-metal screw
Product specifications: Screw diameter: φ12-φ300 Length upper limit 5000mm
Detalji proizvoda
Teknoloji:
Materiɛl 38CrMoALA,
SKD61,SKD11,D2
Linearity screw 0.015mm
Chromium layer hardness 850 HV
Diameter screw D12-D300 mm Chromium layer thickness 0.03-0.10mm
Thickness ratio of screw L/ D=10-50 Chromium surface hardness after nitridation ≥900HB
Nitride layer dɔŋ 0.5-0.8mm Hardness after heat treatment HB240-280
Hardness nitride layer 950-1020HV Waktu Nitriding ≥96 awa
Nitriding fragility (Nitriding fragility) < Level 2 Double metal layer hardness 58-65 HRC
Surface roughness Ra0.4μm Double metal layer depth 0.8-2.0mm

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