Alloy Steel ,Stainless Steel Forged Machined Large Diameter Hydraulic Oil Cylinder
Products:
Oil cylinder,blind hole oil cylinder,hydraulic cylinder
| Material | 4140,4330,18CrNiMo7-6,4340 |
| Forging equipment | 6000T Open die hydropress |
| Application | Metallurgical,mining,pressure machine equipment |
| Melting process | EF+LF+VD |
| Production process | Forging+heat treatment+rough machining+QT |
| Forging ratio | ≥3.5 |
| Applicable standard | ASTM,ASME,DIN,JIS,ISO,BS,API,EN |
| Executive standard | JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
| Certification standard | ISO9001:2008,BV,SGS,IST,UL.CTI |
| Delivery term | Rough machining(N+T);QT |
| Test equipment | Spectrograph,ut deive,tensile and impact test machine,metalloscope,outside micrometer,bore dial indicator,hardness test machine |
| 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. |
Custom properties
| 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 | - |
| Mechanical property | Dia.(mm) | TS/Rm(Mpa) | YS/Rp0.2(Mpa) | EL/A5(%) | RA/Z(%) | Type Of notch | Impact energy | HBW |
| 4140 | Ø15 | 740~1000 | 450~850 | ≥12 | ≥25 | V | ≥40 | ≤250HBS |
| 4330 | Ø10 | ≥1000 | ≥740 | ≥12 | ≥25 | V | ≥42 | -- |
| 18CrNiMo7-6 | Ø15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
| 4340 | Ø15 | ≥980 | ≥835 | ≥12 | ≥55 | V | ≥78 | ≤179HBS |
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
Commerce clause
| Max length | 3000MM |
| MOQ | 1PC |
| Delivery time | 30-50 days |
| Package | Wood pallet,steel frame |
| Delivey term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
| Type of shipping | By ocean,air |
Keywords
Foring process of blind hole oil cylinder is more complicated,high difficulty of processing,high strength structure,better loading capacity
Note:
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;
Product Tags:
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Alloy Steel ,Stainless Steel Forged Machined Large Diameter Hydraulic Oil Cylinder Images
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