18CrNiMo7-6 34CrNiMo6 4140 Carbon Steel Forgings Carburizing Treatment Splicing Arc Rack
18CrNiMo7-6 34CrNiMo6 4140 carburizing Q+T treatment Splicing arc gear rack
Products:
Gear racks are utilized to convert rotating movement into linear motion. A gear rack has straight teeth cut into one surface of a square or round section of rod and operates with a pinion, which is a small cylindrical gear meshing with the gear rack.
Products reference:
| Material | 18CrNiMo7-6 34CrNiMo6 4140 |
| Max weight | 50T |
| Application |
Gear racks are utilized to convert rotating movement into linear motion. A gear rack has straight teeth cut into one surface of a square or round section of rod and operates with a pinion |
| Melting process | EF+LF+VD |
| Production process |
Forging+heat treatment+rough machining+finish machining |
| 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 Authority
|
ABS,DNV,BV,GL,KR,CCS,LR,NK,RINA,RS. |
| Delivery term |
Rough machining(N+T) finish machining(Q+T) and Carburizing |
|
Test equipment |
Spectrograph,UT device,tensile and compact 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 | V |
| 18CrNiMo7-6 | 0.15-0.21 | ≤0.40 |
0.50-0.90 |
≤0.035 | ≤0.035 |
1.50-1.80 |
1.40-1.70 |
0.25-0.35 |
|
| 34CrNiMo6 | ≤0.34 | 0.25-0.30 | ≤0.50 | ≤0.035 | ≤0.035 | ≤1.50 |
≤1.55 |
≤0.20 | |
| 4140 |
0.38-0.43 |
0.15-0.35 |
0.75-1.00 |
≤0.035 | ≤0.040 |
0.80-1.10 |
0.15-0.25 |
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)
- Semi-Finish machining→ Inspection (dimension)
- Carburizing quenching
- Sand blasting
- Finish machining
- Painting
- Packing and Marking(steel stamp, mark)→ Storage Shipment
Commerce clause
| MOQ | 1PC |
| Delivery time | 90-120 Days |
| Package | Wood pallet,steel frame |
| Delivey term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
| Type of shipping |
By ocean,air |
We can supply many types of gear racks. If the application requires a long length requiring multiple gear racks in series, we have racks with the tooth forms correctly configured at the ends. These are described as gear racks with machined ends. When a gear rack is produced, the tooth cutting process and the heat treatment process can cause it to try & go out of true. We can control this with special presses remedial& processes.
Advantage
- 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.
R10496
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.