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Product Name:
Gear Casting in China, Ductile Iron Gear Casting, Steel Casting
Automobile Gear Factory, Gear Casting Workshop
The failure mode of gear:
1. Teeth surface abrasion
In general, when the lubricating oil mix abrasive, it will bring
about teeth wear in the running.
2. Teeth face agglutination
The friction between the teeth surface is bigger and so that
meshing area temperature is too high. Two gears would bond each
other with its bad lubrication, the disappeared oil film
thickness between surfaces which make the metal surface of two
teeth contact directly.
3. Fatigue point erosion
The tooth surface will form a small crack under the effect of
alternating contact stress. But as time goes on, the crack may
scale horizontally to rings gradually, at which some fatigue
shallow pits would be forming on the surface of the tooth.
4. Teeth breakage
The gear root often endures cyclic stress state in service, when
it is higher than fatigue limit, cracks would be forming in the
roots. With the crack expanding gradually, gear tooth breakage
happens because of the driving load.
5. Teeth plastic deformations
Under the impact load or overloads, teeth surface will form
partial plastic deformation, so that the curved surface of the
involute tooth profile appears distorted.
Material Grades:
|
Country |
Standard |
Equivalent Grades of Ductile iron (SG Iron, Nodular
Graphite Iron) |
|
ISO |
ISO 1083 |
400-15 |
450-10 |
500-7 |
600-3 |
700-2 |
800-2 |
900-2 |
|
400-18 |
|
China |
GB 1348 |
QT400-18 |
QT450-10 |
QT500-7 |
QT600-3 |
QT700-2 |
QT800-2 |
QT900-2 |
|
USA |
ASTM A536 |
60-40-18 |
60-42-10 |
70-50-05 |
80-55-06 |
100-70-03 |
120-90-02 |
— |
|
65-45-12 |
80-60-03 |
|
Germany |
DIN 1693 |
GGG40 |
— |
GGG50 |
GGG60 |
GGG70 |
GGG80 |
— |
|
Austria |
|
European |
EN 1563 |
EN-GJS-400-15 |
EN-GJS-450-10 |
EN-GJS-500-7 |
EN-GJS-600-3 |
EN-GJS-700-2 |
EN-GJS-800-2 |
EN-GJS-900-2 |
|
EN-GJS-400-18 |
|
Japan |
JIS G5502 |
FCD400 |
FCD450 |
FCD500 |
FCD600 |
FCD700 |
FCD800 |
— |
|
Italy |
UNI 4544 |
GS370-17 |
GS400-12 |
GS500-7 |
GS600-2 |
GS700-2 |
GS800-2 |
— |
|
France |
NF A32-201 |
FGS370-17 |
FGS400-12 |
FGS500-7 |
FGS600-2 |
FGS700-2 |
FGS800-2 |
— |
|
UK |
BS 2789 |
400/17 |
420/12 |
500/7 |
600/7 |
700/2 |
800/2 |
900/2 |
|
India |
IS 1865 |
SG370/17 |
SG400/12 |
SG500/7 |
SG600/3 |
SG700/2 |
SG800/2 |
— |
|
Spain |
UNF |
FGE38-17 |
FGE42-12 |
FGE50-7 |
FGE60-2 |
FGE70-2 |
FGE80-2 |
— |
|
Belgium |
NBN 830-02 |
FNG38-17 |
FNG42-12 |
FNG50-7 |
FNG60-2 |
FNG70-2 |
FNG80-2 |
— |
|
Australia |
AS 1831 |
300-17 |
— |
500-7 |
600-3 |
700-2 |
800-2 |
— |
|
400-12 |
|
Sweden |
SS 14 07 |
0717-02 |
— |
0727-02 |
0732-03 |
0737-01 |
0864-03 |
— |
|
Norway |
NS11 301 |
SJK-400.3 |
— |
SJK-500 |
SJK-600 |
SJK-700 |
SJK-800 |
|
|
SJK-400 |
Production Process:
Sand Casting, Automatic Molding, Machine Molding, Shell Molding,
Green Sand Casting, Resin Sand Casting,
Supplier:
Ductile Iron Foundry in China, S.G. Iron Casting Manufacturer,
Iron Foundry, China Foundry
Our main products include Gray Iron, Ductile Iron and Cast Steel
casting parts for tractors, trucks, agricultural, construction,
mining machinery, stove and boilers, pump, valve, tugboat,
electrical facilities, cranes, machines, cars, pipe fittings,
docks, cooking ware, excavators etc.
Dandong Foundry is also producing various seeding knife points,
fertilizer boots, plough tine, press wheel, cast seeding
carriers, heavy duty knife points, wing seeder knife points,
seeding system attachment, seeding tubes for our our clients in
AU.
Product Photos:
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