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Songen Machinery Co., Ltd.

Cast Iron Lapping Plates, Lapping Plates, Hand-Lapping Plates manufacturer / supplier in China, offering Precision Surface Cast Iron Lapping Plates, 1800X500mm Knee type vertical milling machine, 1800X500mm Knee type universal milling machine and so on.

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Precision Surface Cast Iron Lapping Plates

FOB Price: Get Latest Price
Min. Order: 1 Piece
Port: Tianjin, China
Production Capacity: 1000 Sets/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Various
  • Casting Form Material: Sand
  • Casting Form Usage Count: Disposable
  • Surface Roughness: Ra3.2
  • Machining Tolerance: +/-0.02mm
  • Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
  • Size: Customized
  • Precision Grades: DIN 876 Standards
  • Applications: Marking, Layout, Lapping, Test, etc.
  • Transport Package: Plywood Case
  • Origin: China
  • Casting Method: Sand Casting
  • Casting Metal: Cast Iron
  • Surface Treatment: Fine Machining
  • Coating: Anti-Rust Grease
  • Standard: DIN
  • Materials: Cast Iron or Steel
  • Processing: Fine Machining
  • Installations: Leveling Pads, Direct Mounts
  • Trademark: Songen
  • Specification: Customized
  • HS Code: 90178000
Product Description
The cast iron lapping plates are used for accurate hand-lapping of workpieces to obtain high accuracy of flatness and roughness. These cast iron lapping plates are extensively used in manufacturing or repairing the measurement tools, lapping parts, manufacturing high-precision mechanical parts and processing the optical instruments, etc. These lapping plates are coated with abrasive sand and can be used with a grinding tool to lap the parts to achieve a surface roughness less than Ra0.08mm.

These cast iron lapping plates are made of high-strength and close-grained gray cast iron available at Grade of GG-20, GG-25 or GG-30 on request. Also it can be made of cast steel. The lapping plate hardness is in the range of HB170-240. Cored and ribbed construction, twice annealing heat treaments at a temperature in the range of 600-700° C (the 1st annealing is done right after casting, the 2nd annealing is done right after the rough machining on the plate) and the following aging treatment are adopted on the plate to relieve the stress, ensure high stability and maintain its long-time accuracy free from distortion. These plates are necessary tooling base plates widely used in workshops.

The surface can be plain flush surface for lapping, marking and layout operations. Also top surfaces of these cast iron plates can be designed with T-slots, threaded holes for purpose of clamping workpieces.

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