Large Hardness Testers for Field Hardness Testing of Large Scale Casting and Forging Parts

Large hardness testers are mainly applied in field hardness testing of large scale casting and forging parts. The principle, structure, performance, operation method and main feature and technical parameters of typical large hardness testers at home and abroad were introduced. The results show that the rocker type hardness testers which work in manual or semi-automatic manner are mainly applied in testing the hardness of one piece or small quantity large scale workpieces. The bridge type hardness testers work in manual, semi-automatic or fully automatic manner, and they could be applied not only in testing the hardness of one piece or small quantity large scale workpieces, but also in testing the hardness of batches of large scale or medium scale workpieces. The automatic bridge type hardness testers have the feature of high efficiency, and could be applied in testing quantity workpieces one by one. As the center, assembled with functions of workpiece polishing, feeding, blanking, compressing,conveying and telecommunication device, the automatic bridge type hardness tester could become an on-line automatic hardness testing system.