In the past, most hardness tests for tinplate used desktop Rockwell hardness testers and ordinary steel flat test anvils to test HR30T hardness.
In recent years, due to the adoption of the internationally recognized HR30Tm hardness measurement method in the national standard GB/T2520-2000 for tinplate, diamond anvils have been used domestically to test the HR30Tm hardness value of tinplate.
However, testing the HR30Tm hardness requires a diamond anvil, which is rarely available in domestic Rockwell hardness testers. Because suitable diamond anvils are difficult to purchase and desktop hardness testers are relatively expensive. Therefore, the application of HR30Tm hardness indication method in the domestic tinplate industry is not widespread. Especially in the application of tinplate manufacturers, although people also realize that the hardness of tinplate is very important, it is related to the quality of processed products, production efficiency, and enterprise benefits. But most companies have not conducted hardness re inspection on the purchased tinplate materials.
The situation is different now. Shenyang Tianxing Measurement and Control Instrument Co., Ltd. has produced the PHR series portable surface Rockwell hardness tester. Its weight is only one percent of that of a desktop computer, and its price is only half of that of a desktop computer. The accuracy is the same as that of a desktop computer, and both comply with the rules of the national standard GB/T 230.1-2004 on Rockwell hardness testing. As an optional item, Shenyang Tianxing Company can also provide diamond anvil pads for testing HR30Tm hardness, which are priced at only one-fifth of similar domestic products.
To test the hardness of tinplate, the PHR-1S surface Rockwell hardness tester can be used, with a weight of only 0.7kg. It can test the thickness of plate and strip data from 0.05 to 25mm, test the inner wall hardness of pipes with an inner diameter of 26mm or more, and test the outer wall hardness of pipes with an inner diameter of 30mm or more. Paired with a diamond anvil, the HR30Tm hardness of tinplate can be tested. This instrument can be conveniently brought to the production site, sales site, and data warehouse for use. It can be used for online quality control in tinplate production plants, as well as for data re inspection in tinplate application plants, and can also be taken to the steel market to purchase data. If equipped with an optional support base, it can also be placed on a platform (such as an office desk) for accurate testing.
The PHR-1S surface Rockwell hardness tester is very suitable for testing the hardness of tinplate, and its selection will definitely bring significant benefits to the production and application manufacturers of tinplate.
