| Customization: | Available |
|---|---|
| After-sales Service: | Twenty Four Hour Online |
| Warranty: | a Year |
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Girth Gears: Rotary kiln Girth Gear,ball mill Girth Gear
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.
Manufacturing process
2.1 Blanks
The blanks of steel castings are provided by the factory and are implemented in accordance with the provisions of GB11352-89 standard. The castings are molded, smelted, poured, boxed, cleaned and trimmed according to the casting process requirements; the steel casting blanks are inspected according to the drawings and technical requirements during inspection and acceptance, and the next process is released after acceptance according to the provisions of JB/T6402-92 standard.
2.2 Rough machining
Line and leave machining allowance, alignment, connection, machining inner and outer circles, milling joint surfaces, drilling and other processes according to the requirements of the drawings.
2.3 Flaw detection
Ultrasonic flaw detection is carried out on the whole, and the internal quality should meet the secondary requirements specified in GB7233-87 standard.
2.4 Normalizing pretreatment
The half gear rings are normalized and tempered in pairs to provide good organization for subsequent surface quenching; and the deformation of the half gear rings after heat treatment is checked according to the requirements of the drawings.
2.5 Machining
First, connect the two half gear rings with high-strength bolts to form an integral gear ring. Process the inner and outer circles and upper and lower end faces of the integral gear ring according to the drawing requirements, and then mill the teeth according to the drawings and machining process requirements.
2.6 Eliminate machining stress
Anneal the integral gear ring to eliminate stress.
2.7 Surface quenching of the integral gear ring
The surface of the gear tooth is induction quenched along the tooth groove with medium frequency, hardness HRC50~55, and effective hardened layer depth 3~5mm.
Forging material process
Forging
Final rolling
Furnace cooling
Control on production
Water quenching
Hardness testing
Rough machining
Ultrasonic testing and dimensional inspection
Final inspection certification
Advantages
One SourceOriginal Equipment Manufacture (OEM) Technical DrawingsGearing technical expertise for kilns and grinding millsState of the art manufacturing facilities and qualityGlobal sales and service supportRotary Kiln Girth GearsWe are leading supplier the Kiln Girth Gears for the various plants as listed below.
Sponge Iron Plants 50TPD 100TPD 300TPD350TPD,500TPD,1000TPDCement plants as per customer requirementGears for phosphate mines, Alumina plant, kaolin-bentoniteGear Cutting Capacity:
100mm diameter to 16000mm diameter10Module to 70ModuleThe Kiln girth gears are available mainly in bi-part, four parts, 8 parts or multi segments as per the requirement and suitability with the application of gear.
In the field of grinding mill components, We supply mill heads,feed inlet,grinding roller,cement kiln riding ring, casting gears, shaft block .Also we supply mill shell of welding structures and fabrications.
Quality assurance documents
The following reports are to be submitted to Quality Assurance:
a. Chemistry report
b. Physical report
c. Heat treatment documents
CITIC HMC Q/HM 973.2-2007 Specification for Steel Castings for Grinding Mills
d. Ultrasonic inspection report (before and after repairs)
e. Magnetic particle inspection report (before and after repairs)
f. Dimensional report
g. Weld repair maps
h. Weld procedures and Procedure qualification record
i. Welder qualification
j. Nondestructive testing inspector qualification
|
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 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 |
Q: Why we believe in luoyang zhongtai industries co., ltd:
A: 1. More than 30 years experience.
2.We are the leading professional supplier of mining machinery, construction machinery, machines casting and forged parts.
3. All products achieved ISO9901:2000 quality management certificate and CE, ROHS certificates.
Q:Delivery time:
A: Parts lead time 1-2months, machines 2-3months.
Q:Payment terms:
A: Accept payment type: T/T, L/C, Western union,Cash.
30% deposit when signed contract. Full payment paid before shipping.
Q: Quality warranty?
A: Guarantee time: one year for main machinery. If something wrong we will provide the technical advice and find solution immediately. For those wearing parts we guarantee high quality parts for long-term supply.
Q: After sales service?
A: We can supply technical guide for machines running test and parts maintenance if end user needs.
ZTIC Heavy Industries is your business partner in the After Market.
ZTIC able to provide:
1. ENGINEERED SPARES - DESIGN AND MANUFACTURING
2. LARGE VOLUME STEEL AND IRON CASTING FOUNDARIES
3. HUGE MACHINE SHOP CAPABILITIES
4. TRAINING PROGRAMMES
5. PREVENTATIVE MAINTENANCE PROGRAMS
6. PREVETATIVE MAINTENANCE SERVICES
7. COMPREHENSIVE MAINTENANCE PROGRAMS
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