Luoyang Zhongtai Industrial Co., Ltd.
Our Values Trust and reputation are a channel in the success and prosperity of ZTIC. Through valued employee loyalty and expertise ZTIC gives its customers a high degree of confidence. Through a
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Girth Gears offered find extensive application in different industry sectors including in sponge iron plants, steel & cement industry, mining industry, wind mills as well as in other industry sectors. These are made available in module range of 10 Module to 70 Module and in minimum diameters of 100 mm to 15000 mm. Further, these comprise maximum weight of 70 MT single pieces. Here the range of hardened & ground gear boxes/gears comprise Worm gear boxes, Helical / Double helical gears/gearboxes, Helical-Bevel gearboxes, Planetary Gearboxes and others.
gear material
42CRMO STEEL DATA
CHEMICAL LIST
C : 0.38-0.45%
Si: 0.17-0.37%
Mn: 0.50-0.80%
S : Allow residual content <0.035%
P : Allow residual content <0.035%
Cr: 0.90-1.20%
Ni: Allow residual content <0.030% Cu: Allow residual content <0.030%
Mo: 0.15-0.25%
MECHANICAL DATA
Tensile Strength σb (MPa): >1080(110)
Yield point σs (MPa): >930(95)
Elongation σ5 (%): >12
Reduction of area ψ (%): >45 Akv (J): Impact absorbing energy Akv(J): >63
Impact toughness value αkv (J/cm2): >78(8)
Hardness: <217HB
Sample size: The blank size of the sample is 25mm
PHYSICAL DATA
Critical point temperature (approximate value): Ac1=730℃, Ac3=800℃, Ms=310℃
Linear expansion coefficient: temperature: 20~100℃/20~200℃/20~300℃ /20 ~400℃/20~500℃ /20~600℃
linear expansivity: 11.1x10K/12.1x10K/12.9x10K/13.5x10K/13.9x10K14.1x10K
ZTIC Gear Cutting Machines include:
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Girth Gear | (1)GS42CrMo4Alloy Steel (corporate proprietary standards) HB 220~240 (2)semi-structured, Y-Spoke(3)Helical (4) reasonable sealing and alignment structure of alloy steel (corporate proprietary standards) | (1) outer steel refining (R-H argon and vacuum treatment) (2) proprietary cold mold hanging sand technology to ensure the casting, the teeth dense (3) normalizing (proprietary technology) to ensure that the tooth surface hardness After (4)rough hobbing, release time, repair the joint surface, then fine roll (5) proprietary homemade hob fine hobbing | (1)castings mechanical properties and chemical composition (internal standard) (2) roughing after sonic testing (3)semi-finishing, finishing after ultrasonic testing and magnetic particle inspection (4) tooth surface magnetic particle inspection, hardness test (5)tooth tolerance check (6) the factory assembly load test to check the accuracy of the size of gear |
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