Quality Control for Pelletizing Components

Inspection Based on Drawings and Order Requirements

Customers can identify critical dimensions, required inspection points, and documentation needs during the inquiry stage. Tolerances, test conditions, and acceptance requirements are agreed for the individual order.

The drawing provides the reference for dimensional features, interfaces, working areas, and inspection points. When a sample is used, available dimensional and equipment information helps define the inspection scope.

Any customer-specific inspection method or documentation requirement should be included with the request for quotation. This allows the applicable work to be defined before the order is finalized.

Dimensional Inspection

JINFENG performs in-house dimensional inspection for relevant pelletizing components. The inspection points are selected from the drawing and may include overall dimensions, mounting features, locating surfaces, and other specified interfaces.

Hardness Testing

JINFENG has in-house equipment for Rockwell C (HRC) hardness testing. The applicable material, working area and hardness requirement are defined for each order.

For pelletizer knives, any published hardness range is tied to the identified working-area material. Customers should include special hardness requirements in the drawing or inquiry.

Die-Hole and Surface Inspection for Die Plates

For die plate projects, in-house inspection capabilities include die-hole inspection and surface inspection. The features to be checked are identified from the die plate drawing and the agreed order requirements.

Surface inspection may also be applied to other pelletizing components when it is relevant to the specified part and working area.

Heating-Channel Pressure Testing

JINFENG performs heating-channel pressure testing for relevant die plate work. The test object and required conditions are defined according to the component and the order requirements.

Customers with a specified test method or acceptance requirement should provide it during the inquiry stage for technical evaluation.

Inspection of Pelletizer Knives and Cutter Hubs

Pelletizer knife inspection may include dimensional inspection, hardness testing, and surface inspection according to the drawing and material requirements.

For cutter hubs, the inspection scope is developed around the hub dimensions, shaft connection, mounting interfaces, and knife-position features shown on the drawing.

Third-Party Ultrasonic Testing

Ultrasonic testing (UT) can be arranged through a qualified third-party inspection provider when required for a project. The required scope should be identified with the inquiry so that third-party involvement can be coordinated with the order.

Information to Specify with Your Inquiry

Please include the inspection information relevant to your component:

• Product drawing and revision
• Critical dimensions or interfaces
• Material and working-area requirements
• Required inspection methods
• Third-party inspection requirements, if any
• Documentation requested with the order
• Customer-specific acceptance requirements

Frequently Asked Questions