Yantai Fangle Metallurgy Group Co., Ltd.  

Product Name: Mandrel Bar with Chrome Plating Used for Mandrel Mill Process Model NO.: as the drawing Application: metal Processing Machinery Parts Material: Alloy Customized: Customized Standard: DIN, ASTM, GB Certification: CE, ISO9001 Condition: New Application Range: Continuous Rolling Mill,Mpm,Fqm,Pqf Trademark: FANGLE Transport Package: Woodern Case Specification: max 20m, Diameter 100mm-500mm Origin: China Product Description Hard chrome plated mandrel bar used for mandrel mill processDescriptionMandrel bar with chrome plating plays a very important role in the mandrel mill process. The Mandrel is the important tool for MPM or FQM during seamless tube production .When rolling seamless tubes, a pre-pierced steel billet is rolled over a mandrelbar by grooved rolls in a stretch reducing rolling process to produce a tube or a tube blank. The mandrelbar determines the shape of the inner tube surface.During production ,it needs 6-7 pieces mandrel to stand by in turns .its surface temperature will reach 700ºC during production and then cooled to 80-120ºC after production ,it requires good quality and long lifetime. Mandrelbars are manufactured with lengths of up to roughly20m and production diameters of currently up to a maximum of 500mm.Production process:1) forging2) rough machining3)magnetic test4) heating treatment5) ultrasonic test6) finish machining7) chromium plating8)thread phosphating9) packageProducts ParametersMaterialsAISI H13, X35CrMo V51 ,4CrMoSi V1,28NiCrMoV10 etc.Diameter80-600mmLengthmax to 20,000mmHardnessMeet the customers'requirementsSurface ProcessingChrome platingThreadingAvailable, phosphatingChrome platingAs per requirement,thickness 0.045-0.065mmProcessEBT + LF (VD) + ESRProperty testsMagnetic testing,Ultrasonic testing etc.Lead timeabout 45 daysDelivery conditionFinished machiningApplicationMPM, PQF and FQM mills,Assel Mills,Accu-roll mill, Push Bench, Pilger mill,continuous tube mill etcMarketIndia,Saudi Arab,Russia,Slovenia,Thailand,Vietnam etc.Mandrel products show Mandrel workshop showCustomer Visit