{"product_id":"qty-32-paint-film-bending-tester-enamelled-cylindrical-mandrel-bend-tester-for-coating-flexibility-test","title":"QTY-32 塗膜曲げ試験機、2～32 mm マンドレル","description":"\u003cdiv class=\"wrap\"\u003e\n  \u003ch2\u003eQTY-32 Paint Film Bending Tester for Coating Flexibility Checks\u003c\/h2\u003e\n  \u003cp\u003eThe QTY-32 is a cylindrical mandrel bend tester for checking the flexibility of paint, varnish, and related coating films on metal panels. A coated sample is bent 180 degrees around a selected mandrel, then inspected for cracking or peeling from the metal substrate.\u003c\/p\u003e\n  \u003cp\u003eUse it when a coating quality control workflow needs a repeatable paint film flexibility test with known mandrel diameters. This model uses 13 cylindrical mandrels from 2 to 32 mm and follows the GB6742 reference listed for the QTY-32 manual.\u003c\/p\u003e\n\n  \u003ch3\u003eWhen to Use It\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eChecking paint and varnish film flexibility on coated metal panels.\u003c\/li\u003e\n    \u003cli\u003eComparing whether a coating cracks or peels after cylindrical mandrel bending.\u003c\/li\u003e\n    \u003cli\u003eRecording the first mandrel diameter that causes coating damage, or confirming the smallest diameter that leaves the film intact.\u003c\/li\u003e\n    \u003cli\u003eRunning a controlled 180 degree bend test with a selected mandrel diameter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eHow the Test Works\u003c\/h3\u003e\n  \u003cp\u003eCoatings behave differently as the bend radius becomes smaller. The operator tests from larger to smaller mandrels, checks the coating condition immediately after bending, and records the diameter where cracking or peeling first appears.\u003c\/p\u003e\n\n  \u003ch3\u003eKey Specifications\u003c\/h3\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eModel\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eQTY-32\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eTest purpose\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eFlexibility evaluation for paint and varnish films on metal panels\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eMandrel diameters\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e2, 3, 4, 5, 6, 8, 10, 12, 16, 18, 20, 25, and 32 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eMandrel count\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e13 diameters listed for this model\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eHandle adjustment range\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eGreater than 17 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eAllowed gap when clamping\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e0.1 mm between the test panel and mandrel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eRecommended test panel\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e120 x 50 x 0.3 mm tinplate panels and thinner samples\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eSpecial panel note\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e1.0 mm special-thickness panels require a separately made fixture or equipment arrangement\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eBending angle\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e180 degrees\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eRecommended bending motion\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eLift the handle smoothly over 1-2 seconds, without sudden movement\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eRecommended test environment\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003e23 +\/- 2 degrees C and 50 +\/- 5% relative humidity\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eStandard reference\u003c\/td\u003e\n        \u003ctd style=\"border:1px solid #d9d9d9;padding:8px;\"\u003eGB6742\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eOperating Sequence\u003c\/h3\u003e\n  \u003col\u003e\n    \u003cli\u003ePrepare the sample according to the relevant product standard: sample, coat, dry, and measure film thickness before testing.\u003c\/li\u003e\n    \u003cli\u003ePlace the tester securely near the edge of a laboratory bench so the adjustment handle can move freely and the sample can be inserted.\u003c\/li\u003e\n    \u003cli\u003eSelect a suitable mandrel, install it between the tester base and the mandrel hole, and tighten it by hand.\u003c\/li\u003e\n    \u003cli\u003eLower the support plate. Insert the panel with the coated side facing down between the mandrel and the adjustment handle, then clamp it with the fastening screw and pressure strip.\u003c\/li\u003e\n    \u003cli\u003eRaise the support plate so the test panel sits tightly against the mandrel.\u003c\/li\u003e\n    \u003cli\u003eLower the adjustment handle to the lowest position, then adjust the pressure roller knob so the pressure roller fits closely against the panel.\u003c\/li\u003e\n    \u003cli\u003eLift the adjustment handle smoothly over 1-2 seconds until the panel bends 180 degrees around the mandrel.\u003c\/li\u003e\n    \u003cli\u003eLower the support plate and release the panel from the mandrel for inspection.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch3\u003eReading the Result\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect the panel immediately after bending.\u003c\/li\u003e\n    \u003cli\u003eCheck whether the coating has cracked or peeled from the substrate. Coating within 10 mm of the panel edge is not counted.\u003c\/li\u003e\n    \u003cli\u003eIf a 10x magnifier is used, state this in the test result to avoid confusion with normal visual inspection.\u003c\/li\u003e\n    \u003cli\u003eTest from larger to smaller mandrels until coating damage first appears. Repeat the same mandrel diameter on a fresh panel to confirm the result.\u003c\/li\u003e\n    \u003cli\u003eRecord the first mandrel diameter that causes cracking or peeling. If the smallest mandrel does not damage the film, record that the film remains intact at that smallest mandrel diameter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePanel and Handling Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFor aluminum panels, keep the long edge of the sample parallel to the rolling direction.\u003c\/li\u003e\n    \u003cli\u003eTo help prevent coating damage during the bending operation, a thin sheet of paper may be placed on the coated side of the panel before testing.\u003c\/li\u003e\n    \u003cli\u003eFor consistent judgement, perform the test at 23 +\/- 2 degrees C and 50 +\/- 5% relative humidity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eIf the QTY-32 tester will not be used for a long time, coat all mandrels with anhydrous Vaseline.\u003c\/li\u003e\n    \u003cli\u003eKeep the mandrels and clamping surfaces clean so particles do not mark the test panel during bending.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFAQ\u003c\/h3\u003e\n  \u003ch4\u003eIs the QTY-32 a cylindrical mandrel bend tester?\u003c\/h4\u003e\n  \u003cp\u003eYes. It bends coated metal panels around cylindrical mandrels so the operator can check paint or varnish film flexibility.\u003c\/p\u003e\n  \u003ch4\u003eWhat does the QTY-32 tester measure?\u003c\/h4\u003e\n  \u003cp\u003eIt checks coating flexibility by showing whether the paint or varnish film cracks or peels after bending around a selected mandrel.\u003c\/p\u003e\n  \u003ch4\u003eHow many mandrel diameters are listed?\u003c\/h4\u003e\n  \u003cp\u003eThe QTY-32 uses 13 mandrel diameters: 2, 3, 4, 5, 6, 8, 10, 12, 16, 18, 20, 25, and 32 mm.\u003c\/p\u003e\n  \u003ch4\u003eWhat sample size is recommended?\u003c\/h4\u003e\n  \u003cp\u003eThe listed test panel is 120 x 50 x 0.3 mm tinplate. For 1.0 mm special-thickness panels, a separately made fixture or equipment arrangement is required.\u003c\/p\u003e\n  \u003ch4\u003eHow should the final result be recorded?\u003c\/h4\u003e\n  \u003cp\u003eRecord the mandrel diameter at which the coating first cracks or peels. If no damage occurs even on the smallest mandrel, record that the coating remains intact at that smallest diameter.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"FMF","offers":[{"title":"デフォルトタイトル","offer_id":43370937876569,"sku":"FMF-QTY-32-89625","price":217.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4354\/5177\/files\/IMG_20250722_211337.jpg?v=1780631788","url":"https:\/\/fmfpack.com\/ja\/products\/qty-32-paint-film-bending-tester-enamelled-cylindrical-mandrel-bend-tester-for-coating-flexibility-test","provider":"FMF Supply","version":"1.0","type":"link"}