Description
Jiangsu Liangyi is professional manufacturer of 18CrNiMo7-6,1.6587,18CrNiMo76,18CrNiMo7.6 open die forging parts and seamless rolled steel forged rings from china
Following is the shape of 18CrNiMo7-6,1.6587,18CrNiMo76,18CrNiMo7.6 forging steel material that we could do is:18CrNiMo7-6 Forged Steel round bars square bars Flat bars Rectangles Bars Rods,18CrNiMo7-6 Forged forging steel rings seamless rolled rings,1.6587 Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,18CrNiMo7-6 forging forged steel shafts,gear,pinion shafts,spindles,gear wheel,1.6587 Forged Forging Steel Discs Disks Blocks plates,18CrNiMo7-6 Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.
Following is forging products of 18CrNiMo7-6,1.6587,18CrNiMo76,18CrNiMo7.6 material that is used in following industry
18CrNiMo7-6 Forged Forging Sugar Mill Gear shafts,pinion shafts,roller shafts,flanges coupling
18CrNiMo7-6 Cement Mill Rotary Kiln Forged Forging Steel case hardened ground Pinion Shafts
1.6587 Forging Forging Steel mill gear pinion shafts
18CrNiMo7-6 Forging wind turbine gearbox gear shafts,ring gears
1.6587 forging forged locomotive transmission shafts
18CrNiMo7-6 forging forged crane wheels
18CrNiMo7-6 hydro turbine shafts
18CrNiMo7-6 Forging gearbox,gear reducer gear wheels, pinion shafts,ring gears,
18CrNiMo7-6 Forging crankshafts for gas compressor, mechanical presses,pump.
18CrNiMo7-6 forging steel Spindles
18CrNiMo7-6 Forging steel gear couplings
18CrNiMo7-6 Forged Forging Rolled Steel Granulators driers coaters coolers Riding Gear Rings
18CrNiMo76 Forged Forging Steel Cement Plant Pull Torque Rods
18CrNiMo76 Forged Forging Steel Crusher Shaft eccentric shafts,Mining Mine rock Gyratory crusher Eccentric shafts Spindles,Crusher Belt Pulley Wheels.
18CrNiMo7-6 Forged Forging Steel Mining Excavator Slewing Bearing Ball Races rings
18CrNiMo7-6 Forged Forging Steel Oil Drilling Tools Gear Shaft Pinion Shafts
18CrNiMo7-6 Forged Forging Steel helical gearing ground ship gearwheel Gear Wheels
18CrNiMo7-6 Forged Forging Steel Dragline Drag Line Power Shovel Cam Swing Shafts Shafting Spindles,dragline CENTRE PINTLE
18CrNiMo7-6 Forged Forging Steel Atomizer Shafts For Flue Gas Desulfurization scrubber Systems
18CrNiMo7-6 Forged Forging Steel drilling rigs Mud pump herringbone gear shafts pinion shafts
18CrNiMo7.6 Forging Forged Steel Thread Tie Rods
18CrNiMo7.6 Forged Forging Steel Electric Shovel Shaft Couplings
18CrNiMo7.6 Forged Forging Steel Granulator Gear Shafts
18CrNiMo7.6 Conveyor Pulley Forging Forged Steel Shafts factory
18CrNiMo7.6 Forged Forging Steel Hydraulic Honed Cylinders
18CrNiMo7.6 Forged Forging Steel Mine hoist systems Equipment Shaft Shafting Spindles
18CrNiMo7-6 Forged Forging Steel Rotary Dryer Trunnion Wheels
18CrNiMo7-6 Forged Forging Forge Steel Cold Mill Decoiler Coiler Mandrel Drum Shafts
18CrNiMo7.6 Forged Forging Steel bullgear Spider Gear Rims
18CrNiMo7.6 Forged Forging Shovel SWING Rimmed GEARING Gear DRUM GEAR,SWING PROPEL Pinion SHAFTS
18CrNiMo7.6 Forged Forging Steel Truck RING GEARS PLANET GEARS PINION SHAFTS
18CrNiMo7.6 Forging Forge Steel Offshore subsea anchor winches Stub Shafts Spindles
18CrNiMo7.6 Forged Forging Steel Seamless Hot rolled Truck concrete mixers semi-trailer bearings Rings
18CrNiMo7.6 Forged Forging Steel Subsea oil gas drilling equipments Box Riser Joint
18CrNiMo7.6 Forged Forging Railway locomotive Traction Motors end housings Rear End Shields
1.6587 is a grade consisting of the addition of chromium, nickel, molybdenum and coal with a range characteristic for all carburizing grades. 1.6587 materials, unlike other simple steel grades, can be used for much larger sizes and loads. This grade of steel is used for heavy-duty parts and components subjected
FOllowing is 18CrNiMo7.6 forging parts melting requirement
Electric arc furnace or blast furnace and oxygen blast converter shall be used, each with subsequent ladle treatment;
Steel shall be vacuum degassed;
Steel shall be non-radioactive;
Calcium addition with the purpose of deoxidization is not allowed before the vacuum degassing;
Calcium can be added with the purpose of improving the casting quality (maximum of 15 ppm) in the refining process after the vacuum degassing;
Quality class shall beat least MQ in accordance with ISO 6336-5 or DIN 3990-5;
Standard EN 10084 shall be followed.
Chemical Composition of 18CrNiMo7-6 forged shafts
Chemical analysis shall be made from a test sample taken just prior to the pouring or during pouring and shall conform to the chemical requirements in the following table:
|
|
Minimum (%) |
Max (%) |
|
C |
0.15 |
0.21 |
|
Si |
- |
0.40 |
|
Mn |
0.50 |
0.90 |
|
P |
- |
0.035 |
|
S |
- |
0.035 |
|
Cr |
1.50 |
1.80 |
|
Ni |
1.40 |
1.70 |
|
Mo |
0.25 |
0.35 |
|
Al |
0.01 |
0.03 |
|
Ca |
- |
0.0015 (15 ppm) |
|
O |
- |
0.0025 (25 ppm) |
|
H |
- |
0.0002 (2 ppm) |
Mechanical Properties of the Raw Material of 18CrNiMo7-6 forging gear shafts
Tensile test pieces shall be prepared in accordance with EN ISO 6892-1 and impact test pieces in accordance with ISO 148-1. The properties below are applied for quenched and tempered test pieces.
|
Yield Strength Rp 0.2 (min) N/mm² |
Tensile Strength (min) N/mm² |
Impact Strength KV (+20°C) (min) J |
Elongation Fracture A5 (min) % |
Reduction of Area (min) % |
|
785 |
1080 |
L = 40 |
L = 11 |
L = 40 |
|
|
|
T = 30 |
T = 9 |
T = 27 |
|
|
|
Q = 30 |
Q = 8 |
Q = 27 |
* L = longitudinal; T = tangential; Q = transversal
The values of the table above are for test pieces with 30 mm of diameter.
The mechanical properties of 18crnimo7-6 forged material shall be proven by one tensile test piece and three impact test pieces (tests in accordance with EN 10002 and ISO 148-1). The arithmetic average obtained from the 3 values of the impact test shall be greater than or equal to the value of impact defined in the mechanical properties table. An individual value of up to 15% less than the average defined in the mechanical properties table is allowed.
The test specimens for the mechanical tests shall betaken in the longitudinal (L) direction when the diameter of the beam is ≤ 250 mm and in the transversal (Q) direction when the diameter of the beam is > 250 mm. These shall be removed from a depth of ¼ of the piece diameter, for massive pieces, and ½ the thickness of hollow pieces.
Heat treatment for the test pieces of 18crnimo7-6 forged parts:
• Austenitization: Minimum: 840 °C, minimum: 2 hours;
• Quenching: 60-80 °C, oil;
• Temper: Minimum: 200 °C, minimum: 2 hours followed by air cooling.
Hardenability of 18crnimo7-6 forging pinion shafts
Jominy testshall be made in accordance with EN 10084 standard. Quenching temperatureshall be 860 ± 5 °C.
When the hardenability is verified by calculation, the manufacturer shall give sufficient information for the customer to confirm the result.
Values calculated according with the SEP 1664: 2004-tab 12b can be used.
|
Jominy dist. (mm) |
1.5 |
5.0 |
11 |
15 |
25 |
30 |
40 |
|
HRC |
40-48 |
39-48 |
36-47 |
34-46 |
31-43 |
30-42 |
29-41 |
Forging Reduction of our 18crnimo7.6 forging shafts
The forging ratio relative to the areashall be > 5: 1 for continuous casting and rolled bars.
The forging ratio relative to the areashall be > 3: 1 for forged bars.
Supply Condition for 18crnimo76 Forged Pieces
. Annealed with maximum hardness of 229 HB;
. Quenched and tempered to a hardness range of 179 – 229 HB;
. Normalized to a hardness range of 159 – 207 microstructure perlite ferrite.
Ultrasonic Inspection of all our 18CrNimo7-6 forging gear shafts
Ultrasonic inspectionshall be made in accordance with EN 10228-3 with the following acceptance criteria: Quality class 4
Note: Inspectionshall be performed with forged material in the final delivery conditions.
Non-metallic inclusions / Cleanness of 18crnimo7-6 forged rings
The non-metallic inclusions shall be in accordance with ISO 4967 Method A or with ASTM E45A, which have acceptance criteria following the requirements presented in the table below:
|
A |
B |
C |
D |
||||
|
Slim |
Thick |
Slim |
Thick |
Slim |
Thick |
Slim |
Thick |
|
2.0 |
1.5 |
2.0 |
1.0 |
1.0 |
1.0 |
1.5 |
1.0 |
Grain Size of 18crnimo7-6 forged sleeves
Grain size G6 and finer; G5 grains are acceptable only if isolated and individual in accordance with EN-ISO 643 or DIN 50601 or ASTM E112-96.
The suppliershall provide in its certificate the grain size.
Welcome your inquiry of 18CrNiMo7-6,1.6587,18CrNiMo76,18CrNiMo7.6 forging parts
