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一、问题的提出目前,我国已经建立了100tf静重式基准测力机和500tf液压式标准测力机。对于这一范围内的力值,已能满足计量和测试的需要,其中500tf力值的精度为(3～5)×01~(-4)。随着国民经济的发展,特别是冶金、造船、人工晶体和港口建设的发展,国内先后试制了一些力值大手500tf的力传感器、试验机和压机。为了对这些测力仪器和设备进行检定,首先就必须有大力值的标准仪器。我国正在研制的2000tf(20MN)液压式标准测力机,还需要一
First, the issue put forward At present, China has established a 100tf deadweight benchmarking machine and 500tf hydraulic standard dynamometer. For this range of force values, has been able to meet the needs of measurement and testing, of which 500tf force value of precision (3 ~ 5) × 01 ~ (-4). With the development of the national economy, especially the development of metallurgy, shipbuilding, artificial crystal and port construction, some force sensors, testing machines and presses have been trial-produced in China. In order to test these force-measuring instruments and equipment, first of all have to have a strong standard equipment. China is developing the 2000tf (20MN) hydraulic standard dynamometer, you also need one