From drawings to finished blades, how we make it happen.



From materials to heat treatment to precision machining, all links are completed independently

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  • 20 + sets of precision machining equipment
  • 2 sets of vacuum heat treatment furnaces
  • 100% three-coordinate full inspection

Shredder Blade Manufacture Process.

From blueprint to finished blade, every step is engineered with precision—CNC machining, heat treatment, and fine finishing ensure tight tolerances, sharp edges, and consistent performance for demanding industrial applications.

OptionWhat We DoKey noteCustomer value point
1Drawing DFM reviewEngineers review manufacturability and optimize the planAvoid blind production and make sure you can do it right
2Material PreparationSelect the corresponding steel from the standing stockNo need to wait for purchase, shorten delivery time
3CNC roughing MachiningFive-axis/four-axis CNC machining shape and hole positionEnsure geometric dimensional accuracy
4Vacuum heat treatmentVacuum furnace heating + quenching + tempering Uniform hardness, no oxidation and decarbonization
5Cryogenic treatment-80°C cryogenic treatmentEliminate residual austenite and improve life span
6CNC finishingPrecision milling of key mating surfacesEnsure dimensional accuracy and surface finish
7Precision grindingPlane grinding/internal and external circular grinding Ensure flatness and sharpness of edges
8Three-coordinate detectionCMM full size inspection Each blade is independently inspected and traceable
9Hardness testing Rockwell hardness tester sampling Hardness report attached to each furnace
10marking packagingLaser marking + anti-rust packaging + traceability of delivery，Arrived in good condition

Standard delivery time is 20-25 days | expedited 10-12 days (confirmation required)

List of core equipment

We have the ability to produce instead of outsourcing processing, which can reduce costs, ensure product quality, and make our products more competitive.

Device NameQuantiityUsageValue
CNC Machining Center12 Sets (include 5-Axies)Roughing, finishing shape and hole positionEnsure geometric accuracy and consistency
Vacuum heat treatment furnace2 SetsVacuum quenching, tempering, cryogenic treatmentUniform hardness, no surface oxidation
Cryogenic treatment equipment1 Sets（-80°C）Eliminate residual stressImprove blade toughness and life
Surface grinder6 SetsEnsure flatness and surface finishThe edge is flat and the cutting effect is good
Three-coordinate measuring instrument (CMM)1 SetsFull size inspectionEach blade can be traced
Rockwell hardness tester2 SetsHardness samplingHardness report attached to each furnace
Spectrum analyzer1 SetsMaterial composition verificationEnsure that the material meets the standards

Material Selection

Characteristics and applications of different steels：

Material Grade Technical CharacteristicsRecommended Hardness (HRC)Application
D2High wear resistance, cost-effective tool steel 58–62 HRC Wood, general plastics, paper, tire recycling
DC53High toughness, excellent edge chipping resistance56-60HRCPlastics with metal contamination, electronic waste shredding
SKD-11Balanced performance, good overall tool steel58–61 HRCGeneral-purpose applications, suitable for most materials
Hardfaced Carbide OverlayExtreme wear resistance, reinforced cutting edge≥68 HRC (edge hardness equivalent) Chemical fibers, films, carpets, and highly abrasive materials
H13Excellent impact resistance, good hot hardness50–54 HRC Large twin-shaft shredders, high-temperature working conditions

Materials not listed can also be customized according to customer requirements, please consult us.

Comparison of machining accuracy and ability

Use the form of a comparison table to show the differences between our capabilities and the common levels in the industry：

Inspection ItemOur CapabilityIndustry StandardCustomer Impact
Thickness Tolerance±0.02 mm±0.05 mmBetter assembly fit and more stable clearances
Hole Diameter ToleranceH7 (+0.015 / 0)H8Smooth bolt installation with no looseness
Hole Position Tolerance±0.03 mm
±0.08 mm
Excellent interchangeability of multi-hole inserts
Flatness0.02 mm / 100 mm0.05 mm / 100 mmEven load distribution on cutting edge, reduced chipping risk
Surface RoughnessRa 0.4 μmRa 0.8 μmSharper cutting edge and improved cutting performance

The above are conventional capabilities, and special accuracy requirements can be confirmed by separate communication.

Quality Control of Whole Process

Every Custom Blade Order Comes With Proof

Deliverables list: as follows:

Quality Control StageInspection ContentRecord Method
Incoming InspectionMaterial composition verification by spectrometerMaterial certificate
In-Process InspectionFirst article inspection after CNC machining, key process sampling inspectionFirst Article Inspection Report
Heat Treatment InspectionHardness sampling per batch, temperature curve recordingHardness Report
Final InspectionFull dimensional inspection using CMM (Coordinate Measuring Machine)CMM Report
Pre-Shipment InspectionAppearance, marking, and packaging inspectionShipping photos

Each batch of orders can be traced back to the specific production batch and heat treatment furnace batch.

FAQ of Custom Shredder Blade

We specialize in fully custom blade manufacturing based on customer drawings.
From DFM review to final inspection, every step is controlled in-house. If needed, our engineers will optimize your design to improve manufacturability, extend tool life, and reduce production risk.
We support both prototype and mass production orders.

We typically recommend tool steels such as D2, DC53, SKD-11, H13, and carbide-overlay materials.

  • D2: best for cost-effective, general recycling applications
  • DC53: higher toughness for contaminated plastics and mixed waste
  • SKD-11: balanced performance for most standard shredding tasks
  • H13: suitable for high-impact or high-temperature working environments
  • Carbide overlay: extreme wear resistance for highly abrasive materials

Our engineers also provide material selection support based on your drawings and application scenario to ensure optimal blade life and performance

We use a full-process quality control system including CNC machining, precision grinding, and CMM inspection.
Key tolerances can reach:

Thickness: ±0.02 mm
Hole position: ±0.03 mm
Flatness: 0.02 mm / 100 mm
Each blade is individually inspected and fully traceable with CMM reports and batch records to ensure consistency across all production batches.

Yes, heat treatment is fully in-house using vacuum furnaces.
We perform vacuum quenching, tempering, and cryogenic treatment (-80°C) to improve hardness uniformity and eliminate internal stress.
This process prevents oxidation and decarburization while significantly improving wear resistance, edge stability, and service life of the blade.

Standard delivery time is 20–25 days depending on complexity and material availability.
For urgent projects, we can provide expedited production in 10–12 days after technical confirmation.
Since we maintain stock materials and complete all processes internally, we can significantly reduce waiting time compared to outsourced production models.

Every order goes through a strict multi-stage inspection system:

  • Incoming material spectrometer testing
  • First article inspection after CNC machining
  • Heat treatment hardness and temperature curve verification
  • Full CMM dimensional inspection
  • Final appearance, marking, and packaging inspection

Each batch is delivered with full quality documentation, including material certificates, hardness reports, and CMM inspection reports for complete traceability.

Are there any drawings that need to be evaluated?

Upload drawings, photos, or contact us for sample delivery address

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