large casting steel gear ring spur gear girth gear for mining
machine
Spur gears are widely accepted as the most efficient type of
gearing solution, when the application of transmitting power and
uniform rotary motion from one parallel shaft to another is
required. Determined by the center distance, spur gears create a
steady functioning speed drive. This drive speed can be decreased
or increased by the variable number of teeth that exist in the
driving gear.
Large Casting Steel Involute Gear Ring Spur Mill Girth Gear For
Mining Machine
Mill Girth Gear
Several of our custom spur gears have been used in gear train
applications - where multiple gears are required to have the same
pressure angle and diameter pitch. They are available in plastic,
non-metallic, brass, steel and cast iron. In addition ,these parts
are manufactured many style types: plain, web, web with lightening
holes, and web with spokes. Many are available with or without
hubs.
| Gear Types | spur gear, helical gear, internal spur gear, ring gear,
straight/spiral bevel gear, hypoid gear, crown wheel & pinion, gear shaft, worm gear & worm shaft, spline
shaft & bushing, etc. |
| Gear Material | Steel: C45, 40Cr <AISI/SAE 5140>, 42CrMo <AISI
4140/4142>, 20CrMnTi, 20CrNiMo <AISI/SAE 8620>, ect. Aluminum Alloy: 2024, 7075, etc. <we advise these instead of
6061/6063> Brass, Bronze, Aluminum Bronze, etc. POM Plastic, MC901 Nylon, etc. |
| Processing | blank turning tooth hobbing, broaching, milling, shaping, etc. bore honing tooth shaving, tooth grinding |
| Heat Treating | tooth induction quenching, vacuum quenching, etc. for 45-50HRC; carburizing for 56-62 HRC; nitriding, carbon-nitriding for gears required abrision resistant; |
| Application | Automotive, Agricultural, Electronic, Industrial, Medical, Defense,
Off-highway, ect. |
Large Casting Steel Involute Gear Ring Spur Mill Girth Gear For
Mining Machine
Mill Girth Gear
Manufacturer scope:
1. Mining Machinery: grinding mill, crusher, screen, feeder,
classifier, magnetic separator, mining hoist and etc mineral
processing machines.
2. Construction machinery: rotary kiln, cement mill, crushing plant
machines, concrete block making machines, concrete mixing plant
machines and etc.
3. Metallurgical machinery: straightener, metal mixer, rolling
machine, steel converter, blast furnace, dryer, cooler, ball press
machine and etc equipments.
4. Wearing parts:forging and casting parts for mining/construction
machinery,etc heavy machinery using
manufacturing process
| No. | process | processing measure | processing equipment | program of tests | inspection equipment |
1 |
prepare | 1. Material: high quality cast steel 2. Formulate reasonable casting process and ensure casting quality
by means of computer simulation of solidification 3. Formulate reasonable smelting process to ensure the chemical
composition of casting 4. Formulate reasonable heat treatment process to ensure Verify the mechanical properties of the casting
| | | |
2 |
modelling | 1. Strictly control the quality of type (core) sand, ensure the
strength and control of water 2. Sand tamping, inclined surface polishing, paint brush twice 3. Place the pouring riser and cold iron according to the process
requirements 4. Clean and bake as required cavity
|
sand mixer |
Check the quality of type (core) sand and surface sand 2. Check the cavity size Check the baking time
| |
3 |
Smelting casting | 1. Choose low S.P pig iron, select scrap steel, auxiliary materials
and alloy of baking furnace according to process 2. According to special process smelting, make steel S.P hazardous elements meet internal control standards 3. The finished molten steel is treated with argon blowing in the
ladle and R-H vacuum circulation degassing to make the molten steel
composition uniform, harmful oxygen (H, O) reduction, uniform
temperature, increase the fluidity of molten steel, so as to ensure
good liquid replenishing of the casting and prevent the casting
from porosity and other defects Strictly control casting temperature and casting speed according to
the provisions |
50 t furnace R-h vacuum circulation degassing equipment for ladle argon blowing
device
| 1. Furnace materials must meet the technological requirements 2. Control feeding temperature, feeding quantity, pure boiling
time, steel temperature 3. The direct reading spectrometer is used to quickly detect the
chemical composition in front of the furnace to ensure that the
equipment is in the best state during melting and the chemical
composition of the finished product meets the requirements during
pouring 4. Check the parameters of argon blowing and R-H vacuum treatment 5. Check the starting temperature and Pouring time
|
Direct reading spectrometer The physical and chemical equipment
|
4 |
Cleaning and heat treatment | 1. The internal heat preservation time of casting mold shall not be
less than the process requirements 2. Sand falling, shot blasting, cutting and pouring risers meet the
technological requirements 3. Strictly carry out the blank heat treatment To ensure the uniformity of furnace temperature and refine the
original structure of casting
|
50t Inert falling sand machine and 8.5 ×12m Heat treatment furnace
| 1. Check the furnace temperature record 2. The sample is heat-treated with the casting in the same furnace,
and the mechanical properties are sent to be checked immediately 3. Check the surface quality of the blank Quantity, geometric dimension and machining allowance
|
The physical and chemical equipment |
5 | rough machining | 1. Reserve allowance for rough machining according to technological
provisions Artificial aging treatment
| Vertical lathe 8.5 ×12m Heat treatment furnace
| Check the size Visual inspection for defects ultrasonic inspection
|
Ultrasonic Testing |
Large Casting Steel Involute Gear Ring Spur Mill Girth Gear For
Mining Machine
Mill Girth Gear
GB, ISO Certification:
Large Casting Steel Involute Gear Ring Spur Mill Girth Gear For
Mining Machine
Main production equipment list
| NO. | Equipment list | Spec | Unit | Quantity(set) |
| Total | Own | Lease | New purchase |
| 1 | CNC vertical lathe | Φ8000mm | Set | 1 | | | 1 |
| 2 | CNC vertical lathe | Φ5000mm | Set | 1 | 1 | | |
| 3 | CNC vertical lathe | Φ2500mm | Set | 3 | 1 | | 2 |
| 4 | CNC forming mill | YK73125 | Set | 1 | 1 | | |
| 5 | Gear hobbing machine | 3.2m | Set | 2 | 2 | | |
| 6 | Gear hobbing machine | 8m | Set | 1 | 1 | | |
| 7 | Gear hobbing machine | 14m | Set | 1 | 1 | | |
| 8 | C650 lathe | CW6160B | Set | 3 | 3 | | |
| 9 | C630 lathe | C630 | Set | 4 | 4 | | |
| 10 | Heavy sleeper | Φ6*20m | Set | 2 | 2 | | |
| 11 | Heavy sleeper | Φ2*100m | Set | 3 | 2 | | 1 |
| 12 | Digital display boring and milling machine | TX611/4 | Set | 2 | 2 | | |
| 13 | 220Boring and milling machine | B665 | Set | 1 | 1 | | |
| 14 | Universal milling machine | X63W | Set | 1 | 1 | | |
| 15 | 80Radial drilling machine | Z3080X26 | Set | 6 | 3 | | 3 |
| 16 | Hard bearing balancing machine | YYW-3000S | Set | | 1 | | |
| 17 | AC electric welding machine | B×3-630-2 | Set | 9 | 5 | | 4 |
| 18 | DC electric welding machine | SS400 | Set | 8 | 3 | | 5 |
| 19 | 100 ton gantry crane | MG100/10 | Set | 1 | 1 | | |
| 20 | Double beam bridge crane | QDA5.32/5 | Set | 3 | 2 | | 1 |
| 21 | Double beam bridge crane | QDA5.150/10 | Set | 1 | 1 | | |
| 22 | CNC blanking | | Set | 1 | 1 | | |
| 23 | Rolling machine | δ=100 | Set | 1 | 1 | | |
Mill Girth Gear
