Customized High Precision 120MT Mill Girth Gear Rotary Kiln Girth Gear

Rotary kiln Girth Gear Professional Customized High Precision Girth Gears

Bull Gears

Bull Gears can be made available by us as per different international standards including ASTM & AISI (USA), BS (British), JIS (Japanese), GS (German) and IS (Indian) standards. These gears comprise toothed driving wheel which is also largest in the mechanism. As a gear/sprocket much larger than others in same power train, these are larger of two spur gears engaged in any machine.

Features :

• Making use of latest computer aided designing support using software like AUTOCAD, SOLID WORKS so as to ensure accurate designing of gears
• All software used updated to latest versions
• Gears checked for interference checks as well as dimensional accuracies
• Expertise in offering solutions as per client's designs and drawings
• Expertise in also offering load analysis and stress analysis on gears using finite element analysis for checking appropriate selection of materials & geometrical designs
• Reverse engineering and designing support for generating drawings exactly as per sample as well as obtain accurate geometrical sizing

Applications :

• Mining industry
• Steel plants
• Power plants
• Paper plants
• Fertilizer plants

Girth Gears: Rotary kiln Girth Gear,ball mill Girth Gear

Item	Structural features	Processing measure	Test content
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

42CRMO STEEL DATA

化学成份 CHEMICAL LIST

编辑

碳 C :0.38～0.45%

硅 Si:0.17～0.37%

锰 Mn:0.50～0.80%

硫 S :允许残余含量≤0.035%

磷 P :允许残余含量≤0.035%

铬 Cr:0.90～1.20%

镍 Ni:允许残余含量≤0.030%

铜 Cu:允许残余含量≤0.030%

钼 Mo:0.15～0.25% [1]

力学性能 MECHANICAL DATA

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抗拉强度 σb (MPa):≥1080(110)

屈服强度 σs (MPa):≥930(95)

伸长率 δ5 (%):≥12

断面收缩率 ψ (%):≥45

冲击功 Akv (J):≥63

冲击韧性值 αkv (J/cm2):≥78(8)

硬度 :≤217HB [1]

试样尺寸:试样毛坯尺寸为 25mm

物理性能 PHYSICAL DATA

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

1)临界点温度(近似值) Critical point temperature (approximate value)

:Ac1=730°C,Ac3=800°C,Ms=310°C.



2)线胀系数:温度 Linear expansion coefficient: temperature

20~100°C/20~200°C/20~300°C /20 ~400°C/20~500°C /20~600°C,线胀系数

linear expansivity: 11.1×10K/12.1×10K/12.9×10K/13.5×10K/13.9×10K14.1×10K.

3)弹性模量:温度 Modulus of elasticity: temperature 20°C/300°C/400°C/500°C/600°C,

弹性摸 Elastic modulus 210000MPa/185000MPa/ 175000MPa/165000MPa/15500oMPa[2]

Luoyang Zhongtai Industries Co., Ltd. The company was founded in 1981 and finished joint stock reform in 2005. There are eight subsidiaries and it's an independent legal entity with the qualifications of operating import & export trade.

With a garden-like industrial park and modern standard plant covering 80,000 square meters, ZTIC possesses advanced equipments, technologies and detecting methods. After more than 30 years development, the company has developed into a collectivized one with product designing, manufacture, installation and technical services as a whole. The products comprise all the equipments used in mining, cement, metallurgy, construction as well as the related accessories with high power reducer and large-sized castings & forgings, etc.

ZTIC has acquired ISO 9001:2008 Certification of conformity of Management System Certification, Mine Product Safety Authentication, Recognition for BV Mode Ⅱ Survey Scheme in France, Mining Electrical Equipment KY Certification, etc.
The company has also acquired "Fully Quality Management Achievement Award", "Top 50 Enterprises", "Henan Outstanding Innovative Enterprise” and “The Most Powerful Enterprises of Henan" in 2010.

Quality product performance and good reputation, our products have been exported to mnay countries and regions in the world, including: Russia, Serbia, Australia, Mongolia, Indonesia, Bangladesh and other countries, the products are subject to a great welcome and praise.