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工作硬度计检定规程中规定:检定硬度计负荷时,负荷杠杆的运动方向应与试验时负荷杠杆的运动方向一致,并应在相应硬度值为某值时的负荷杠杆下沉位置上进行检定。但大多数布氏、维氏硬度计的负荷杠杆均在机壳内,面且机壳外部没有确定负荷杠杆位置的任何参照物。故每次进行负荷检定时,都需打开机壳上盖或后盖,才能确定负荷杠杆下沉位置,致使检定工作极为不便。为此我们提出以下确定负荷杠杆位置的方法
Work hardness test procedures specified: test hardness tester load, the direction of movement of the load lever should be consistent with the movement of the test load lever, and should be in the corresponding hardness value of the load lever when the sink position for verification. However, most of the Brinell and Vickers load levers are inside the housing and there is no reference outside the housing that defines the load lever position. Therefore, each load test, the need to open the case cover or back cover, to determine the load lever sinking position, resulting in a very inconvenient verification. To this end we propose the following method to determine the position of the load lever