General Parts

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Coupling Steel Power Transmission Shaft Forging 4340 4140 18CrNiMo7-6 4330 ?


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Products:
Mining equipment parts,coupling transmission shaft,main shaft,transmission forging,mining machinery forging,shaft tube,extension sleeve,cardan joint
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Product reference

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?Material | 4340,4140,18CrNiMo7-6,4330 |
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Forging equipment | 6000T open die hydropress |
Applications | ?
Transmission components of mining machinery,transmission and connection function
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Melting process | EF+LF+VD |
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Production process
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Forging+heatment+rough machining+Q+T+finish machining |
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Forging ratio
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Applicable standards
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Executive
standards
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Certification authority
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Delivery terms
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Rough machining(N+T);finish machining(Q+T),nitriding quenching |
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Test machine | ?
Spectrograph,UT device,tensile and compact device,metalloscope,outside micrometer,bore dial indicator,trilinear coordinate measuring machine,hardness test
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Service | ?
Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality.
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Custom properties:

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Material
elements | C | Si | Mn | P | S | Cr | Ni | Mo | Others |
4140 | 0.38-0.43 | 0.15-0.35 | 0.60-0.90 | ≤0.035 | ≤0.040 | 0.80-1.10 | -- | 0.15-0.25 | - |
4330 | 0.28-0.33 | 0.10-0.35 | 0.85-1.15 | ≤0.020 | ≤0.020 | 0.80-1.10 | 1.10-1.40 | 0.35-0.55 | - |
18CrNiMo7-6 | 0.15-0.21 | 0.17-0.35 | 0.50-0.90 | ≤0.025 | ≤0.025 | 1.50-1.80 | 1.40-1.70 | 0.25-0.35 | ? |
4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.035 | ≤0.040 | 0.70-0.90 | 1.65-2.00 | 0.20-0.30 | - |
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Mechanical properties | ?
Dia.(mm) | ?
TS/Rm(Mpa) | ?
YS/Rp0.2(Mpa) | ?
EL/A5(%) | ?
RA/Z(%) | ?
Type Of notch | ?
Impact energy | ?
HBW |
4140 | ?10 | 740~1000 | 450~850 | ≥12 | ≥25 | V | ≥40 | ≤250HBS |
4330 | ?10 | ≥1000 | ≥740 | ≥12 | ≥25 | V | ≥42 | -- |
18CrNiMo7-6 | ?15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
4340 | ?15 | ≥980 | ≥835 | ≥12 | ≥55 | V | ≥78 | ≤179HBS |
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Process procedure:
Forging process flow quality control: Raw material steel ingot into warehouse(test the chemical content) → Cutting→ Heating(Furnace temperture test) → Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal diamention, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment

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Commerce clause

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Max weight | 40T |
MOQ | 1PC |
Delivery time | 30-50days |
Package | Poly wood case, wood pallet, steel frame support |
Delivery terms | FOB;CIF;CFR；DDU； |
Payments terms | T/T,LC |
Type of shipping | By ocean,air |
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Keywords

Main transmission components of heavy mining equipments compose of axle tube,extension sleeve,cardan joint.common material incledes alloy steel and nitriding steel.
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Features
# # High-precision dimensional tolerance;
# Excellent mechanical properties;
# Produce different dimension based on customer’s requirements;
# Advanced manufacture equipments and inspection devices;
# Excellent technical personality;
# Control the production procedure strictly;
# Pay attention on the package protection;
# Quality full service.



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