Mirror polishing and internal grinding: the CRS certifies, with documentation, the measurements obtained in the chrome plating, grinding and super-finishing of the calender rollers. Roundness, table / pins concentricity, chrome thickness and hardness and roughness certified. Request a quote for Internal Grinding or Mirror Polishing. Home Our history Specializations Sectors Plants and Machines Certifications Contacts Where we are Specializations CRS specializes on behalf of third parties in: - Hard chrome plating of cylinders, be they calender rollers, corrugators, rolling mills, dryers, drag rollers, flat heads, blow heads, calibrating plates, molds, screws, pistons, rods, shafts - Hard chromium plating of interiors up to a diameter of 500 mm - Thick nickel plating of steel and stainless steel cylinders - Round grinding and concave and convex crowning of cylinders - Grinding of internal diameters - Lapping and super-finishing ( mirror polishing ) of calender cylinders - Sandblasting and shot peening of caliber cylinders and plates HARD CHROME : The CRS carries out chromium coatings with thicknesses varying between 20 and 200 microns on multiple metallic materials: iron steel stainless steel nickel copper martensitic structures report to aisi up to a maximum length of mm. 6.000, a maximum diameter of mm. 1,200 and a maximum weight of 25 tons. THICKNESS NICKELING : CRS carries out the thick nickel plating treatment on steel and stainless steel cylinders. Diameters and lengths on request. GRINDING : CRS carries out round grinding work on behalf of third parties , also with rounded, concave and convex profile of large cylinders up to a maximum diameter of 1,200 mm. (maximum overall dimensions 1,500 mm) and a maximum length of mm. 12,000. The CRS carries out the grinding of internal diameters . The maximum treatable weight is 20 tons. FINISH AND SUPER-FINISH: CRS carries out finishing processes that give the surfaces the roughness required by the customer's technical specifications. CRS specializes in the super-finishing of calender rolls and is able to obtain a Ra ≤0.003 which is tested and certified with a control card. CRS also has peening and satin finishing procedures to obtain MATT effects with specific Ra on request, up to a maximum of Ra = 15 © 2013 CRS srl | Via Great Britain 20, 21013 Gallarate (VA) - Italy Share capital euro 50,000.00 = iv VAT number / tax code: 12580770159 - Milan company register no. 213545/1998 REA Milan n. 1568313 - cookie policy