| Control pointsThe production equipment is the multi-station forming cold forming machine produced by Yixing Rongteng Machinery;The company has 7 cold forming machines; The soft grinding process adopts wired processing and centralized liquid supply.The company has 4 cylindrical soft grinding lines and 3 conical soft grinding lines. Suzhou Zhongmenzi ZMZ.series rollingresistance furnace is a continuous heattreatmentfurnace with world advanced level,which integrates cleaning, drying, quenching,cleaning, freezing, tempering and sorting.Wehave had 16 sets of ZMZ810.The furnace has the protection device oflinkage, motor over-limit, over-temperature and atmosphere over-limit alarm. Itissuitable for mass production of steel ball, rolling ncedle and soon.The heating and tempering Parts are all spiral structure, sothatthe products Protection atmosphere: adopt 2oxygen probe, one monitor, one measure, guaranteethe stability ofthe atmosphere in the quenchingfurnace, effectively eliminate the decarbonizationphenomenon of the product.Equipment equipped with low temperature treatment,product retained austenite content is significantlylower than the national standard value;Product level:The microstructure of the product after heat treatment is controlled at 2-3level;The hardness uniformity is controlled at HRC0.8;Retained austen The soft grinding process adopts wired processing and centralized liquid supply;The company has 4.5 cylindrical finished grinding lines and 5.5 conical finished grinding lines;High precision, CNC special processing equipment developed by Fuheng Technology is used for final grinding and superfinishing;Online eddy current flaw detection and appearance inspection (online cleaning, eddy current flaw detection, appearance inspection, cleaning and rust prevention, and automatic packaging of one line r key control pointsStrictly sort and inspect 100% appearance and size;Constant temperature setting in the workshop ensures the dimensional stability and consistency of rollers;Strictly implement the customer's standard requirements to ensure the cleanliness of rollers; Test itemsControl Points of 'Testing Equipment Inspect each batch;CQⅠ-9 audit of the heat treatment process every year; InclusionsMonitor the process parameters in each batch, and regularly backup and save the data；Temperature, time, car bon potential and parameter control are equipped with alarm devices; Test ItemsEach equipment is equipped with an axis instrument for testing;The concentration and PH value of the grinding fluid is measured once a week, and the fluid is replaced regularly;Each batch of products is inspected, recorded and accepted;The processing workshop uses online testing equipment, which can record, analyze and query,to replace manual product online size control. The online flaw detection equipment adopts the most advanced product of Nanjing Bokna Automation System Co.,Ltd., and the detection sensitivity can be extended from the surface of the workpiece to the inside of the metal.The reciprocating probe is used to scan the outer diameter of the rollers, and the detection range covers the entire outer surface. There are 6 production lines, and each production line is equipped with a photoelectric appearance detection instrument. For 100% inspection process, high-performance visual sensors and non-contact optical methods are used to detect each part of the workpiece;Defects such as pitting and chamfering on the surface of the product are detected, and qualified and unqualified products are automatically separated, which reduces labor and ensures stable appearance quality; Precision measurement room domestic advanced detection equipment: VME-3020 computer image measuring instrument, German TS-UD surface profile measuring instrument.
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