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Cast Iron Lapping Plate Manufacturer - Shreeji Gears

Precision Lapping Plates

Shreeji Gears is a specialist lapping plate manufacturer, providing high-precision plates essential for achieving superior flatness and surface finishes. Our plates are made from high-quality, close-grained Cast Iron for its stability and ability to hold lapping compounds.

Lapping plates are the reference flat surface for lapping workpieces with abrasive slurries. This process is critical for applications requiring tight tolerances on flatness and surface finish, such as mechanical seals and valve components.

Understanding Lapping Plates

Lapping is a precision finishing process using a loose abrasive slurry between a workpiece and a lapping plate to produce extremely flat and smooth surfaces. The lapping plate must have a high degree of flatness and stability to accurately transfer its geometry to the workpiece.

Key Characteristics:

  • High Flatness: Serves as the master flat surface during the lapping operation.
  • Material Stability: Cast iron offers excellent dimensional stability, resisting warping over time after proper stress relieving.
  • Abrasive Retention: The porous nature of cast iron helps hold the lapping compound.
  • Grooving (Optional): Serrations or grooves help distribute the lapping slurry evenly and allow debris to escape.

Expert Lapping Plate Manufacturing

We employ meticulous manufacturing and quality control to produce lapping plates that meet stringent flatness and stability requirements.

Why Choose Shreeji Gears?

  • Premium Cast Iron: Utilizing close-grained, stress-relieved Cast Iron (Grade FG 260 or higher) for maximum stability.
  • Precision Machining & Grinding: Initial shaping and grinding operations achieve high levels of parallelism and preliminary flatness.
  • Expert Finishing: Final flatness is achieved through skilled hand scraping or machine lapping processes.
  • Controlled Flatness Grades: Manufacturing plates to specific flatness tolerances (e.g., Grade 0, Grade 1, or custom).
  • Custom Grooving: Offering various groove patterns (serrated, spiral, radial, cross-hatch) based on customer needs.
  • Rigorous Inspection: Flatness verification using precision instruments like autocollimators or electronic levels.

General Technical Specifications (Customizable):

  • Material: Close-Grained Cast Iron (FG 260 / GG25 or higher), Stress Relieved.
  • Shape: Round, Square.
  • Sizes: Standard (e.g., 300mm, 450mm, 600mm) and Custom Sizes.
  • Flatness Tolerance: Specified in microns (conforming to IS, DIN, or custom standards).
  • Grooving: Plain (Ungrooved) or Grooved (Specify pattern).
  • Hardness: Typically 180-220 BHN.

Achieve ultimate precision in flatness and surface finish with our expertly crafted lapping plates. Choose Shreeji Gears, your premier lapping plate manufacturing partner. Contact us today to discuss your precision finishing requirements!