Document Overview: This technical document from SAPORITI srl details the grinding process of hard coated valves, specifically focusing on two large hard coated balls used as valve components.

1. Specifications of Hard Coated Valves

• Two hard coated balls with diameters approximately 500 mm and 900 mm.
• The larger ball was processed first.

2. Grinding Procedure

• Diamond disc tools were employed for the grinding operation, indicating the use of high-precision abrasive technology suitable for hard coatings.

3. Quality and Accuracy

• The second valve achieved a finishing accuracy with roundness tolerance of less than 0.01 mm, demonstrating high precision in the grinding process.

4. Contact and Manufacturer Information

• Manufacturer: SAPORITI srl, located in Solbiate Olona, Italy.
• Contact details include telephone (+39 0331649196), fax (+39 0331643136), and email ([email protected]).
• Website: www.saporiti.it

Summary of Critical Points

• Use of diamond disc tools is critical for effective grinding of hard coated valve balls.
• Maintaining roundness accuracy below 0.01 mm is a key quality parameter.
• Large diameter components (up to 900 mm) can be processed with this method.